The Snowstorm of the Century - Climat

“The Snowstorm of the Century”
The Snow Just Kept On Falling from March 3 to 5, 1971
Commemorative Report of the Snowstorm of March 3–5, 1971
Part of a Series on Extreme Weather in Quebec
March 2001
Series on Extreme Weather in Quebec
CES-Q99-02
Perrier R. and M. Slivitzky (1999), Overview of Heavy Rainfall events in
Quebec, Scientific Report, in collaboration with Environment Canada,
Quebec Region, 48 pp.
CES-Q99-01
Milton J. and A. Bourque (1999), A Climatological Account of the January
1998 Ice Storm in Quebec, 2nd edition, Atmospheric Sciences and
Environmental Issues, Environment Canada, Quebec Region, 87 pp.
CES-Q98-01
Milton J. and A. Bourque (1998), A Climatological Account of the January
1998 Ice Storm in Quebec, 2nd edition, Atmospheric Sciences and
Environmental Issues, Environment Canada, Quebec Region, 87 pp.
Other reports/studies on extreme weather in Quebec
ENVIRONMENT CANADA (1998), Characterization of Rainfalls of November 7-10, 1996, over
southern Quebec, Scientific Services Division, Quebec Region, 69 pp.
ENVIRONMENT CANADA (1997), Torrential rains of July 18 to 21 1996, in the province of
Quebec: Analysis and interpretation of meteorological and
climatological data, Scientific Services Division, Quebec Region,
September 9, 1997, 103 pp.
ENVIRONMENT CANADA (1987), Les pluies du 14 juillet 1987 dans la région de
Montréal/July 14th 1987 rainstorm in the Montreal area, Expert Report,
Environment Canada, Scientific Services Division, 52 pp.
For more information:
Centre de Ressources en Impacts et Adaptation
au Climat et à ses Changements - CRIACC
Place Bonaventure, Portail Nord-Est,
800, rue de la Gauchetière Ouest, suite 7810
Montréal (Québec), Canada
H5A 1L9
E-mail : [email protected]
Internet address: www.criacc.qc.ca
Aussi disponible en français
‘The Snowstorm of the Century,’ March 3–5, 1971
Some called the March 1971 storm the “storm of the century.” Thirty years after the event
and now that we are in the 21st century, did that turn out to be true?
This brief report describes the weather conditions in Montreal at the time of the famous
snowstorm and compares it to three other significant snowstorms recorded at the
Montreal-Dorval station since the early 1940s. The three other storms, classified by
snowfall amount, occurred on December 26–28, 1969, February 16–17, 1954, and
March 26–27, 1955 (Appendix A). Each of these storms clearly had significant impacts,
which were related to the socio-economic conditions of the time. However, the most
notable characteristic of the March 1971 storm was not necessarily the amount of snowfall
(fourth among the four storms), but rather the combination of three other factors: snowfall
intensity, wind speed, and depth of snow on the ground at the beginning of the storm.
Synoptic description
The storm was caused by a coastal low-pressure system from the Carolinas that
intensified rapidly after 00:00 GMT on March 4, 1971, (19:00 EST on March 3, 1971) as it
passed over Virginia. The low was located in New York State at 966 mb on March 4 at
12:00 GMT, after deepening 33 mb in 12 hours. It continued its northeasterly course while
slowly filling, moving into New Brunswick on March 5 at 12:00 GMT. At that time, it had a
central pressure of 974 mb.
Progression of the storm
Figures 2 and 3 show the hourly progression of wind speed and visibility at the MontrealDorval International Airport and Quebec City Airport. Visibility at Dorval diminished
gradually as the snow began to fall, dropping dramatically in the evening of March 3 as the
wind intensity increased. Visibility was reduced to less than 1 km due to moderate snow
and blowing snow for at least 17 hours. It was also during this period that Dorval recorded
wind speeds of 70–75 km/h with gusts to nearly 110 km/h.
Conditions in Quebec City were similar but deteriorated much more rapidly after the snow
began to fall. The average winds associated with this storm were stronger at this station
and contributed to the rapid reduction in visibility after the snow started falling. There was
a lag of nearly 18 hours between the onset of the storm at these two stations.
The storm progressed in a similar manner in other parts of the province. Snowfall
associated with moderate to strong winds quickly reduced visibility to less than 0.5 km for
periods of up to 24 hours (Appendix B).
March 6, 2001
1
Storm of March 3–5, 1971, at Montreal-Dorval Int'l
80.0
25
70.0
20
Visibility (km)
50.0
Hourly Wind Speed (km/h)
60.0
15
40.0
10
30.0
20.0
5
10.0
March 3
Time (h) (EST)
22:00
20:00
18:00
16:00
14:00
12:00
10:00
08:00
06:00
04:00
02:00
00:00
22:00
20:00
18:00
16:00
14:00
12:00
10:00
08:00
06:00
04:00
02:00
0
00:00
0.0
March 4
hourly winds
visibility
Figure 1: Wind speed and hourly visibility at Dorval-Montreal Int’l airport, from March 3, 1971, 00:00 EST to
March 4, 1971, 22:00 EST
Storm of March 3–5, 1971, at Quebec City A
45
70.0
40
60.0
35
Visibility (km)
30
40.0
25
20
30.0
15
20.0
Hourly Wind Speed (km/h)
50.0
10
10.0
5
March 4
Time (h) (EST)
hourly winds
12:00
10:00
08:00
06:00
04:00
02:00
00:00
22:00
20:00
18:00
16:00
14:00
12:00
10:00
08:00
06:00
04:00
02:00
0
00:00
0.0
March 5
visibility
Figure 2: Wind speed and hourly visibility at Quebec City Airport, from March 4, 1971, 00:00 EST to
March 5, 1971, 12:00 EST
March 6, 2001
2
Comparison of the storms
Table 1 shows specific meteorological and climatological parameters measured during the
four heaviest snowstorms at Montreal-Dorval. The following observations can be made
from the data:
1. The average daily temperatures were relatively similar (with the exception of February
1954) for all storms;
2. Of the four storms, the March 1971 storm at Montreal-Dorval had the least amount of
snowfall;
3. The depth of snow on the ground, an important factor at the start of a storm, was 56 cm;
4. The average wind speed for March 4, 1971 as well as the maximum hourly wind speed
were the strongest recorded;
5. The maximum wind gusts recorded on March 4 were severe, reaching up to 108 km/h;
6. The combination of strong to severe winds, significant depth of snow on the ground and
amount of snowfall all contributed to aggravate the effects of the storm of
March 3–4, 1971, at Montreal.
Montreal-Dorval Station
Average temperature (°C)
Snowfall (cm)
Total storm snowfall
Snow on the ground (cm) (08:00 EST)
Average hourly winds (km/h)
Maximum hourly wind (km/h)
Maximum wind gust (km/h)
March 1971 Storm
4
3
-8.1
-5
3.8
43.2
47
56
66
17.3
43.1
31
74
43
108
December 1969 Storm
26
27
-9.5
-5
15
37.8
5
36.2
61
77
30
24.3
40
72
28
-5.3
6.1
58.9
53
21
26
<30
February 1954 Storm
16
17
0.6
-0.3
39.4
18.5
57.9
n.a.
n.a.
24.6
32
42
48
n.a.
n.a.
March 1955 Storm
26
27
-5.3
-8.1
30.5
18.8
49.3
18
48
20.9
40.4
32
51
48
63
Table 1: Comparison of the four heaviest snowstorms recorded at Montreal-Dorval (1942–2001)
The storm continued to produce severe weather over eastern Quebec and the Maritimes
on March 5. Figure 3 shows the snowfall accumulation for March 3–5, 1971. The heaviest
snowfall occurred in southwestern Quebec along the St. Lawrence River, in Laurentides
Park and in the Gaspé region. Stations that reported the largest amounts of snow for this
period include Lac St-Denis with 80.5 cm, Mont Apica (Laurentides Park) with 80.2 cm,
Lac Jacques-Cartier (Laurentides Park) with 69.9 cm, Ouimet (Gaspé) with 76.2 cm, StÉleuthère (Kamouraska) with 74.2 cm and Upton (Eastern Townships) with 72.6 cm.
Appendix C presents a comprehensive list of snowfall in Quebec.
TR: The French reads “les vents moyens quotidiens.” Should it read “vents horaires
moyens”?
March 6, 2001
3
Figure 3: Snow accumulation (cm) on March 3–5, 1971
Conclusion
The storm of March 3–5, 1971, had a wide range of effects, including school closures,
slowdowns or stoppages of road, rail and air traffic and major disruptions of social and
economic activities. Storms like this underscore our dependence on the smooth
functioning of our infrastructure to carry out daily activities. Although only the fourth
heaviest in terms of snowfall in the Montreal area, this storm caused major problems
mainly due to wind speed and blowing snow, which aggravated conditions in the Montreal
metropolitan region. Montreal was certainly not the most affected region, receiving less
snowfall than Laurentides Park and some communities in the Gaspé, but the “storm of the
century” clearly demonstrated the vulnerability of major cities to extreme climate events.
March 6, 2001
4
APPENDIX A
Snowstorms at Montreal/Dorval (1941–2000)
In increasing order of significance
Order
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
March 6, 2001
Date
December 26–28, 1969
February 16–17, 1954
March 26–27, 1955
March 3–4, 1971
March 6–8, 1956
December 28–30, 1954
November 29–30, 1944
March 13–14, 1993
January 14–16, 1999
December 20–22, 1973
April 8–9, 2000
November 16–18, 1965
January 14–16, 1959
March 14–16, 1958
February 12–14, 1993
March 4–5, 1985
February 15–17, 1958
January 29–February 1, 1966
December 24–26, 1966
February 17–20, 1960
February 7–9, 1947
January 25–28, 1986
February 13–14, 1960
March 9–12, 1949
January 5–9, 1962
January 21–22, 1979
December 30–31, 1942
February 24–27, 1960
February 3–4, 1972
April 3–6, 1975
February 7–9, 1958
Total Snowfall (cm)
58.8
57.9
49.3
47.0
46.4
43.7
41.9
41.2
40.0
38.9
37.7
37.5
37.4
36.8
36.2
36.0
35.3
35.2
34.9
34.3
34.1
34.0
33.7
33.5
33.4
33.4
33.3
33.3
33.2
32.6
32.3
5
APPENDIX B
Hourly Storm Progression
1. Montreal-Dorval Int’l
YYYY/MM/DD/HH:MM
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/ 0:00
3/ 1:00
3/ 2:00
3/ 3:00
3/ 4:00
3/ 5:00
3/ 6:00
3/ 7:00
3/ 8:00
3/ 9:00
3/10:00
3/11:00
3/12:00
3/13:00
3/14:00
3/15:00
3/16:00
3/17:00
3/18:00
3/19:00
3/20:00
3/21:00
3/22:00
3/23:00
4/ 0:00
4/ 1:00
4/ 2:00
4/ 3:00
4/ 4:00
4/ 5:00
4/ 6:00
4/ 7:00
4/ 8:00
4/ 9:00
4/10:00
4/11:00
4/12:00
4/13:00
4/14:00
4/15:00
4/16:00
4/17:00
4/18:00
4/19:00
4/20:00
4/21:00
4/22:00
4/23:00
Ceiling
30's m
(71)
UNL
UNL
UNL
UNL
UNL
UNL
UNL
250
250
UNL
UNL
UNL
250
250
230
230
200
160
10
20
12
12
8
9
12
12
8
6
5
5
5
5
2
2
0
2
0
0
0
0
0
1
1
5
10
10
10
34
Vis
Wind
Directn
km 10's deg
(72) (156/75)
24.1
0
24.1
0
24.1
0
24.1
36
24.1
2
24.1
3
4.8
2
2.4
2
4.8
1
6.4
2
4.0
3
4.0
4
4.8
3
4.8
4
6.4
4
6.4
4
8.0
6
4.8
5
1.6
5
4.8
5
1.6
5
1.6
5
2.4
5
1.2
4
1.6
5
1.6
5
1.2
5
0.8
5
0.6
5
0.6
5
0.6
5
0.6
5
0.2
5
0.2
5
0.0
5
0.2
5
0.0
5
0.0
4
0.0
4
0.0
4
0.0
1
0.2
33
0.2
32
0.6
32
2.4
32
12.9
33
24.1
31
24.1
29
Wind
Speed
km/hr
(76)
0
0
0
10
8
8
3
10
13
19
19
18
18
18
16
16
18
19
19
23
23
23
26
27
31
31
35
40
40
40
45
40
47
53
58
42
74
74
71
61
39
29
32
35
39
27
27
29
Dry
Bulb
deg C
(78)
-8.3
-7.8
-8.9
-10.6
-10.6
-10.6
-11.1
-11.7
-11.7
-10.6
-8.3
-6.7
-5.6
-3.9
-3.3
-3.3
-3.3
-3.9
-5.0
-4.4
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-4.4
-4.4
-4.4
-4.4
-4.4
-5.0
-5.0
-4.4
-4.4
-4.4
-5.0
-5.6
-5.6
-5.6
-5.0
-5.0
Wet
Bulb
deg C
(79)
-8.9
-8.9
-9.4
-10.6
-11.1
-11.1
-11.1
-12.2
-11.7
-11.1
-8.9
-7.8
-6.7
-5.6
-5.0
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.6
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.6
-5.0
-4.4
-5.0
-5.6
-6.1
-5.6
-5.6
-5.6
-6.1
Dew
Point
deg C
(74)
-12.2
-11.7
-11.7
-12.8
-13.3
-13.3
-13.3
-14.4
-14.4
-13.9
-12.2
-11.1
-10.0
-9.4
-9.4
-10.6
-11.1
-10.0
-8.3
-8.3
-7.2
-7.2
-7.2
-7.2
-7.2
-7.2
-7.2
-7.2
-6.7
-6.7
-7.2
-6.7
-6.7
-6.1
-6.1
-6.1
-6.1
-6.7
-6.7
-6.1
-5.6
-6.1
-6.7
-7.2
-7.2
-7.2
-7.8
-8.3
Wind
Speed
km/hr
(76)
Dry
Bulb
deg C
(78)
Wet
Bulb
deg C
(79)
Dew
Point
deg C
(74)
32
31
34
35
32
42
45
48
55
48
55
50
64
64
61
51
68
58
42
51
40
32
32
19
13
19
16
21
27
26
27
32
32
32
23
24
-4.4
-4.4
-5.0
-5.0
-5.0
-4.4
-4.4
-5.0
-5.0
-5.6
-5.6
-5.6
-5.6
-5.6
-5.0
-5.0
-5.0
-3.9
-3.9
-3.9
-3.3
-2.8
-2.2
-2.2
-3.9
-3.9
-3.9
-3.9
-3.9
-4.4
-4.4
-4.4
-4.4
-3.9
-3.3
-2.8
-6.1
-5.6
-5.6
-5.6
-5.6
-5.0
-5.0
-5.0
-5.6
-5.6
-6.1
-6.1
-5.6
-6.1
-5.6
-5.6
-5.0
-4.4
-4.4
-4.4
-3.9
-3.9
-3.9
-3.9
-4.4
-4.4
-4.4
-5.0
-5.0
-5.6
-6.1
-6.1
-6.1
-5.6
-5.6
-5.0
-10.0
-10.0
-7.2
-6.7
-6.7
-6.1
-6.1
-6.1
-6.7
-6.7
-7.2
-7.2
-6.7
-7.2
-6.7
-6.7
-6.1
-5.6
-5.6
-5.6
-6.1
-7.8
-8.3
-8.3
-6.1
-6.7
-6.7
-7.8
-9.4
-10.6
-11.1
-11.1
-11.1
-11.1
-11.1
-10.6
RH
MSL
Press
kPa
(73)
101.99
101.99
101.95
101.88
101.89
101.90
101.93
101.91
101.97
101.92
101.89
101.85
101.77
101.67
101.61
101.60
101.58
101.48
101.36
101.33
101.25
101.18
101.01
100.85
100.71
100.55
100.39
100.26
100.04
99.78
99.58
99.47
99.09
98.88
98.57
98.34
98.06
97.86
97.73
97.66
97.77
97.88
97.98
98.08
98.22
98.36
98.49
98.59
Station
Press
kPa
(77)
101.61
101.61
101.57
101.50
101.51
101.52
101.55
101.53
101.59
101.54
101.51
101.47
101.39
101.29
101.23
101.22
101.20
101.10
100.98
100.95
100.87
100.80
100.63
100.47
100.33
100.17
100.01
99.88
99.66
99.40
99.20
99.09
98.71
98.50
98.20
97.97
97.69
97.49
97.36
97.29
97.40
97.51
97.61
97.71
97.85
97.99
98.12
98.22
Cloud
Opacity
tenths
(81)
4
2
3
2
2
1
3
6
6
5
5
5
7
7
6
6
8
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
Cloud
Amount WEATHER
tenths (83-106,
(82)
260)
7 4 5 4 4 2 4
F
8
F
9
F
8
H
7
H
8
H
10
H
10
H
10
H
10
H
10
H
10
S-H
10
S10
S10
S10
S10
S10
S10
S10
S10
S10
SBS
10
S-BS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
S-BS
10 10 10 -
%
(80)
MSL
Press
kPa
(73)
Station
Press
kPa
(77)
Cloud
Opacity
tenths
(81)
Cloud
Amount WEATHER
tenths (83-106,
(82)
260)
64
65
86
88
89
88
90
90
90
90
90
89
90
89
91
91
90
88
87
86
80
70
64
65
84
81
83
74
63
62
61
61
60
59
56
56
101.22
101.16
101.03
100.85
100.71
100.53
100.33
100.16
100.02
99.70
99.30
98.90
98.50
98.10
97.79
97.73
97.50
97.47
97.49
97.50
97.61
97.67
97.71
97.81
97.91
98.05
98.16
98.23
98.34
98.48
98.67
98.81
98.97
99.08
99.21
99.31
100.27
100.22
100.09
99.91
99.77
99.59
99.39
99.23
99.09
98.77
98.38
97.98
97.58
97.19
96.88
96.82
96.59
96.56
96.58
96.59
96.70
96.76
96.80
96.90
97.00
97.14
97.25
97.32
97.43
97.57
97.76
97.89
98.05
98.16
98.29
98.39
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
7
7
10
9
8
4
%
(80)
72
73
78
81
78
80
83
83
80
76
74
73
69
65
62
58
57
63
77
74
83
83
83
84
84
84
85
85
87
87
87
87
87
88
88
88
90
89
90
89
90
90
90
88
86
85
82
80
2. Quebec City A
YYYY/MM/DD/HH:MM
Ceiling
30's m
(71)
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
4/ 0:00
4/ 1:00
4/ 2:00
4/ 3:00
4/ 4:00
4/ 5:00
4/ 6:00
4/ 7:00
4/ 8:00
4/ 9:00
4/10:00
4/11:00
4/12:00
4/13:00
4/14:00
4/15:00
4/16:00
4/17:00
4/18:00
4/19:00
4/20:00
4/21:00
4/22:00
4/23:00
5/ 0:00
5/ 1:00
5/ 2:00
5/ 3:00
5/ 4:00
5/ 5:00
5/ 6:00
5/ 7:00
5/ 8:00
5/ 9:00
5/10:00
5/11:00
March 6, 2001
140
120
10
7
5
5
3
1
1
1
0
0
0
0
0
0
0
1
4
12
20
25
25
25
10
20
15
30
70
70
70
80
70
80
80
UNL
Vis
Wind
Directn
km 10's deg
(72) (156/75)
25.0
25.0
1.6
1.2
1.0
1.0
0.6
0.2
0.2
0.2
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
1.2
1.0
8.0
12.9
16.1
8.0
1.6
4.8
4.8
8.0
16.1
16.1
40.2
40.2
40.2
40.2
40.2
40.2
7
7
7
6
7
7
7
7
8
7
7
6
6
7
7
7
6
7
7
6
6
6
5
2
33
33
32
33
33
33
34
33
34
33
33
32
RH
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
9
10
10
10
9
7
-
-
S-BS
S-BS
S-BS
S-BS
SBS
SBS
SBS
SBS
SBS
SBS
SSGBS
SSG-BS
SBS
SBS
SBS
SBS
S-BS
S-BS
S-BS
SSSSSSSSS-
6
3. Sherbrooke A
YYYY/MM/DD/HH:MM
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/18:00
3/19:00
3/20:00
3/21:00
3/22:00
3/23:00
4/ 0:00
4/ 1:00
4/ 2:00
4/ 3:00
4/ 4:00
4/ 5:00
4/ 6:00
4/ 7:00
4/ 8:00
4/ 9:00
4/10:00
4/11:00
4/12:00
4/13:00
4/14:00
4/15:00
4/16:00
4/17:00
4/18:00
4/19:00
4/20:00
4/21:00
4/22:00
4/23:00
5/ 0:00
5/ 1:00
5/ 2:00
5/ 3:00
5/ 4:00
5/ 5:00
5/ 6:00
5/ 7:00
5/ 8:00
5/ 9:00
5/10:00
5/11:00
5/12:00
5/13:00
5/14:00
5/15:00
5/16:00
5/17:00
5/18:00
5/19:00
5/20:00
5/21:00
5/22:00
Ceiling
30's m
(71)
100
100
40
10
10
10
10
5
5
20
14
10
8
6
12
3
10
10
10
6
6
8
8
8
6
6
12
10
30
10
11
12
19
12
9
5
5
18
18
20
20
20
20
20
20
25
25
30
20
10
8
8
90
Vis
Wind
Directn
km 10's deg
(72) (156/75)
12.9
12
12.9
13
9.7
7
2.4
8
2.4
6
1.6
6
1.6
6
0.8
6
0.8
5
3.2
7
1.6
5
1.6
5
1.2
5
1.0
5
2.4
5
0.2
5
2.4
5
1.6
4
1.6
3
0.8
3
0.8
4
1.2
4
1.2
2
1.2
1
1.0
36
1.0
33
3.2
29
2.4
32
3.2
31
1.6
31
3.2
29
4.0
29
4.8
27
1.6
27
1.2
27
0.8
27
0.8
27
1.0
27
0.8
27
0.8
27
1.2
27
3.2
27
1.6
26
4.8
27
12.9
27
8.0
27
12.9
27
12.9
27
4.8
26
1.6
26
1.6
29
1.6
27
12.9
27
Wind
Speed
km/hr
(76)
6
11
16
23
23
19
18
23
24
26
24
24
24
32
35
42
35
32
29
24
26
24
29
19
23
19
13
24
24
31
32
32
29
31
35
32
35
32
37
39
27
35
26
19
37
40
32
26
32
23
27
23
16
Dry
Bulb
deg C
(78)
-2.8
-2.8
-3.3
-4.4
-5.0
-5.6
-5.6
-6.1
-6.1
-5.6
-6.1
-6.1
-6.1
-5.6
-5.6
-6.1
-5.6
-5.6
-6.1
-5.6
-5.6
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.6
-5.6
-5.6
-6.7
-6.7
-6.7
-7.2
-7.2
-7.2
-7.2
-7.8
-7.8
-7.2
-7.2
-6.1
-6.7
-6.1
-5.6
-5.0
-5.0
-5.6
-5.6
-6.1
-6.1
-6.1
-6.1
Wet
Bulb
deg C
(79)
-3.3
-3.3
-3.3
-4.4
-5.0
-5.6
-5.6
-6.1
-6.1
-5.6
-5.6
-6.1
-6.1
-5.6
-5.6
-6.1
-5.6
-5.6
-6.1
-5.6
-5.6
-5.0
-5.0
-5.6
-5.0
-5.0
-5.0
-5.6
-5.6
-5.0
-6.1
-6.7
-6.7
-7.2
-7.2
-7.2
-7.2
-7.2
-7.2
-6.7
-7.2
-6.7
-6.7
-6.7
-6.1
-6.1
-5.6
-5.6
-6.1
-5.6
-6.1
-6.1
-6.1
Dew
Point
deg C
(74)
-5.0
-4.4
-4.4
-6.1
-5.6
-6.1
-6.1
-6.7
-6.7
-6.7
-6.7
-6.7
-6.7
-6.7
-6.7
-7.2
-6.7
-6.7
-6.7
-6.1
-6.7
-6.1
-6.1
-6.1
-5.6
-5.6
-5.6
-6.1
-6.1
-5.6
-6.7
-7.2
-7.2
-7.8
-7.8
-7.8
-7.8
-7.8
-7.8
-7.2
-7.8
-8.3
-8.3
-8.9
-8.9
-8.3
-7.8
-6.7
-7.2
-6.1
-6.7
-7.2
-7.2
Wind
Speed
km/hr
(76)
16
10
13
14
14
11
11
10
21
23
19
24
18
26
35
29
23
23
21
19
19
19
19
19
21
27
23
21
26
21
24
26
27
24
21
23
29
32
37
26
24
Dry
Bulb
deg C
(78)
-5.6
-6.1
-6.7
-7.2
-7.8
-7.8
-7.8
-7.2
-7.2
-7.2
-7.2
-7.2
-6.7
-6.7
-6.7
-6.7
-6.7
-6.7
-7.2
-6.7
-7.2
-7.8
-7.8
-8.3
-8.3
-8.3
-8.9
-8.3
-8.3
-8.3
-8.3
-8.3
-8.3
-8.3
-8.9
-8.3
-8.3
-8.9
-9.4
-9.4
-9.4
Wet
Bulb
deg C
(79)
-8.3
-8.3
-8.3
-8.3
-8.9
-8.9
-8.3
-7.8
-7.8
-7.8
-7.8
-7.8
-7.8
-7.8
-7.2
-7.2
-7.2
-7.2
-7.8
-7.2
-7.8
-8.3
-8.3
-8.9
-8.9
-8.9
-9.4
-8.9
-9.4
-8.9
-8.9
-8.9
-8.9
-8.9
-8.9
-8.9
-8.9
-9.4
-9.4
-10.0
-10.0
Dew
Point
deg C
(74)
-15.6
-15.6
-15.0
-12.2
-12.2
-11.7
-11.1
-10.6
-10.6
-10.6
-10.6
-10.6
-10.6
-10.0
-9.4
-9.4
-9.4
-9.4
-9.4
-9.4
-10.6
-10.6
-10.6
-11.1
-11.1
-11.7
-11.7
-11.7
-11.7
-11.7
-11.1
-11.1
-11.1
-11.1
-11.1
-11.1
-11.1
-11.7
-11.7
-12.8
-12.8
RH
%
(80)
84
87
90
90
95
96
96
95
95
94
97
95
95
96
92
92
92
94
93
95
95
93
93
94
95
95
95
96
95
100
100
95
95
96
94
98
98
99
99
100
96
84
87
82
79
79
82
89
90
97
94
94
93
MSL
Press
kPa
(73)
101.39
101.31
101.21
101.18
101.02
100.91
100.78
100.62
100.43
100.28
99.98
99.80
99.57
99.28
98.94
98.51
98.27
97.99
97.65
97.46
97.06
96.93
96.88
96.89
96.98
97.10
97.22
97.35
97.52
97.71
97.90
98.12
98.31
98.43
98.63
98.82
98.97
99.14
99.29
99.39
99.53
99.62
99.70
99.76
99.84
100.00
100.11
100.23
100.40
100.50
100.62
100.71
100.74
Station
Press
kPa
(77)
98.42
98.37
98.27
98.24
98.10
97.99
97.86
97.72
97.53
97.38
97.11
96.93
96.70
96.44
96.10
95.67
95.46
95.16
94.84
94.63
94.23
94.13
94.05
94.06
94.15
94.27
94.39
94.52
94.69
94.88
95.07
95.29
95.48
95.60
95.77
95.96
96.11
96.28
96.43
96.53
96.64
96.73
96.81
96.87
96.95
97.11
97.22
97.34
97.51
97.58
97.70
97.79
97.82
Cloud
Opacity
tenths
(81)
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
7
Cloud
Amount WEATHER
tenths (83-106,
(82)
260)
10 10
S10
S10
S10
S10
S10
S10
S
10
S
10
S10
S10
S10
S10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S10
S
10
S
10
S10
S10
S10
S10
S10
S10
S10
S10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
SBS
10
SBS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S10
S10
S10
SW10 10 10
SW10
SW10
S10
S7
S-
MSL
Press
kPa
(73)
101.48
101.39
101.38
101.31
101.19
101.03
100.87
100.72
100.52
100.36
100.19
99.97
99.83
99.68
99.36
99.09
98.85
98.64
98.41
98.23
98.10
98.04
98.08
98.26
98.30
98.40
98.42
98.48
98.59
98.68
98.81
98.92
99.13
99.24
99.32
99.44
99.56
99.73
99.86
100.00
100.07
Station
Press
kPa
(77)
96.53
96.44
96.43
96.36
96.27
96.11
95.95
95.85
95.65
95.49
95.35
95.13
94.99
94.86
94.54
94.27
94.08
93.87
93.64
93.49
93.36
93.30
93.34
93.52
93.56
93.66
93.68
93.74
93.82
93.91
94.04
94.15
94.36
94.47
94.50
94.62
94.74
94.88
95.01
95.15
95.22
Cloud
Opacity
tenths
(81)
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
9
7
Cloud
Amount WEATHER
tenths (83-106,
(82)
260)
10 10 10 10
S10
S10
S10
S10
S10
S10
S10
S10
S
10
S10
S10
SBS
10
SBS
10
SBS
10
S+
10
S+
10
S+
10
S
10
S
10
S+
10
S
10
S10
S10
S10
S10
S10
S10
S10
S10
S10
S10
S10
S10
S10
S10
S9
S7
S-
4. Ste-Agathe-des-Monts
YYYY/MM/DD/HH:MM
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/18:00
3/19:00
3/20:00
3/21:00
3/22:00
3/23:00
4/ 0:00
4/ 1:00
4/ 2:00
4/ 3:00
4/ 4:00
4/ 5:00
4/ 6:00
4/ 7:00
4/ 8:00
4/ 9:00
4/10:00
4/11:00
4/12:00
4/13:00
4/14:00
4/15:00
4/16:00
4/17:00
4/18:00
4/19:00
4/20:00
4/21:00
4/22:00
4/23:00
5/ 0:00
5/ 1:00
5/ 2:00
5/ 3:00
5/ 4:00
5/ 5:00
5/ 6:00
5/ 7:00
5/ 8:00
5/ 9:00
5/10:00
Ceiling
30's m
(71)
130
130
110
100
28
25
25
14
12
10
6
4
4
5
5
6
5
3
2
3
5
5
3
3
5
9
90
12
14
12
9
9
9
8
10
12
12
13
12
28
70
March 6, 2001
Vis
Wind
Directn
km 10's deg
(72) (156/75)
25.0
9
25.0
8
25.0
11
4.8
11
4.0
8
3.2
7
4.0
7
3.2
4
2.4
6
2.0
7
1.2
8
0.8
6
1.0
7
1.0
5
0.8
3
0.8
2
0.4
4
0.2
3
0.2
3
0.4
5
0.8
36
0.8
35
0.4
33
0.8
32
1.2
33
3.2
31
6.4
32
4.0
32
6.4
33
3.2
31
2.4
32
3.2
31
2.4
31
1.6
30
2.0
29
2.4
30
2.4
30
4.8
30
4.8
28
11.3
29
16.1
30
RH
%
(80)
46
47
52
68
70
75
75
77
76
75
76
77
77
79
82
79
79
80
82
81
79
80
81
79
80
79
78
76
77
77
80
80
80
81
81
82
82
79
80
77
77
7
5. Roberval A
YYYY/MM/DD/HH:MM
Ceiling
30's m
(71)
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
4/ 0:00
4/ 1:00
4/ 2:00
4/ 3:00
4/ 4:00
4/ 5:00
4/ 6:00
4/ 7:00
4/ 8:00
4/ 9:00
4/10:00
4/11:00
4/12:00
4/13:00
4/14:00
4/15:00
4/16:00
4/17:00
4/18:00
4/19:00
4/20:00
4/21:00
4/22:00
4/23:00
5/ 0:00
5/ 1:00
5/ 2:00
5/ 3:00
5/ 4:00
5/ 5:00
5/ 6:00
5/ 7:00
5/ 8:00
5/ 9:00
5/10:00
5/11:00
5/12:00
5/13:00
5/14:00
5/15:00
5/16:00
5/17:00
5/18:00
UNL
100
100
70
70
35
25
15
20
20
10
10
10
4
1
1
1
0
1
1
1
3
4
4
6
14
11
11
10
15
15
18
20
15
20
15
15
20
25
25
30
40
40
Vis
Wind
Directn
km 10's deg
(72) (156/75)
Wind
Speed
km/hr
(76)
Dry
Bulb
deg C
(78)
Wet
Bulb
deg C
(79)
Dew
Point
deg C
(74)
%
(80)
MSL
Press
kPa
(73)
Station
Press
kPa
(77)
Cloud
Opacity
tenths
(81)
25
30
30
31
30
29
31
32
30
30
3
3
3
3
3
3
3
35
35
36
35
35
35
35
35
34
34
32
31
31
31
31
30
32
32
32
32
32
32
32
32
31
30
10
13
16
13
16
16
21
16
19
16
24
32
24
24
32
24
24
24
24
24
24
24
24
24
24
24
21
23
27
24
37
32
29
32
24
24
24
24
24
24
24
24
24
-15.6
-13.3
-13.9
-14.4
-14.4
-13.9
-12.8
-12.8
-12.2
-10.6
-7.8
-7.8
-7.2
-7.2
-7.8
-7.8
-8.3
-7.8
-7.2
-7.2
-6.7
-6.7
-6.7
-6.7
-6.7
-6.7
-6.7
-7.2
-7.2
-7.2
-7.8
-7.8
-7.2
-6.7
-6.1
-6.1
-5.6
-5.0
-4.4
-4.4
-5.0
-5.6
-5.6
-15.6
-13.3
-14.4
-14.4
-14.4
-13.9
-12.8
-12.8
-12.2
-10.6
-7.8
-7.8
-7.2
-7.2
-7.8
-7.8
-8.3
-7.8
-7.2
-7.2
-6.7
-6.7
-6.7
-6.7
-6.7
-6.7
-6.7
-7.2
-7.2
-7.2
-7.8
-7.8
-7.8
-7.2
-6.7
-6.7
-6.1
-5.6
-5.6
-5.6
-5.6
-6.1
-6.1
-18.3
-15.6
-17.2
-16.7
-16.7
-15.6
-15.0
-15.0
-13.9
-12.2
-8.9
-8.9
-8.9
-8.9
-8.9
-8.9
-9.4
-8.9
-7.8
-8.3
-7.8
-7.8
-7.8
-7.8
-7.8
-7.8
-7.8
-8.3
-8.3
-8.3
-8.9
-8.9
-9.4
-8.9
-8.3
-9.4
-7.8
-7.2
-7.8
-8.3
-7.8
-8.3
-8.9
80
82
76
83
85
85
85
85
87
87
90
90
90
90
90
90
90
91
93
92
92
92
92
92
91
93
92
92
92
93
93
91
87
84
84
75
83
82
78
76
80
80
79
101.64
101.54
101.43
101.36
101.29
101.25
101.13
101.02
100.96
100.74
100.48
100.28
100.04
99.77
99.58
99.37
99.25
99.04
99.00
98.89
98.85
98.85
98.84
98.82
98.82
98.84
98.91
98.92
98.99
99.07
99.18
99.28
99.35
99.44
99.53
99.60
99.63
99.68
99.80
99.92
100.05
100.24
100.40
99.33
99.24
99.13
99.06
98.99
98.95
98.83
98.71
98.65
98.43
98.21
98.01
97.77
97.51
97.32
97.11
97.00
96.79
96.75
96.66
96.62
96.62
96.62
96.60
96.60
96.62
96.69
96.70
96.77
96.85
96.96
97.06
97.13
97.22
97.31
97.38
97.41
97.46
97.58
97.70
97.80
97.99
98.15
5
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
Wind
Directn
km 10's deg
(72) (156/75)
32.2
3
48.3
4
48.3
4
24.1
5
32.2
4
32.2
6
4.0
4
0.4
4
0.0
5
0.0
5
0.0
5
0.0
5
0.0
6
0.0
6
0.0
6
0.0
6
0.0
5
0.0
5
0.0
5
0.2
5
0.2
4
0.4
4
0.4
4
0.6
3
0.6
2
2.4
1
3.2
35
24.1
36
40.2
36
48.3
36
48.3
35
Wind
Speed
km/hr
(76)
18
19
19
23
24
24
24
29
35
40
42
43
47
45
48
47
47
48
40
35
26
26
27
24
23
23
18
18
21
14
16
Dry
Bulb
deg C
(78)
-6.1
-6.7
-6.7
-6.1
-6.1
-5.6
-6.7
-6.1
-6.1
-5.6
-5.6
-5.6
-5.0
-4.4
-4.4
-3.9
-3.9
-3.9
-3.9
-4.4
-3.9
-4.4
-4.4
-3.9
-3.9
-3.9
-3.9
-3.9
-3.3
-2.8
-2.2
Wet
Bulb
deg C
(79)
-6.7
-7.2
-6.7
-6.7
-6.1
-6.1
-6.7
-6.1
-6.1
-5.6
-5.6
-5.6
-5.0
-4.4
-4.4
-3.9
-3.9
-3.9
-3.9
-4.4
-3.9
-4.4
-4.4
-4.4
-3.9
-3.9
-4.4
-4.4
-3.9
-3.3
-2.8
Dew
Point
deg C
(74)
-8.3
-8.9
-8.3
-7.8
-7.8
-7.2
-7.8
-7.2
-7.2
-6.1
-6.1
-6.1
-5.6
-5.0
-5.0
-5.0
-5.0
-4.4
-4.4
-5.0
-4.4
-5.0
-5.0
-5.6
-5.0
-5.6
-6.1
-6.1
-5.6
-4.4
-3.9
RH
MSL
Press
kPa
(73)
101.55
101.50
101.35
101.26
101.11
100.99
100.65
100.36
100.14
99.79
99.58
99.48
99.32
99.16
98.94
98.72
98.57
98.49
98.43
98.39
98.36
98.22
98.25
98.25
98.26
98.34
98.41
98.49
98.55
98.68
98.77
Station
Press
kPa
(77)
101.27
101.22
101.07
100.98
100.83
100.71
100.37
100.08
99.86
99.51
99.31
99.21
99.05
98.89
98.67
98.45
98.30
98.22
98.16
98.12
98.09
97.95
97.98
97.98
97.99
98.07
98.14
98.22
98.28
98.41
98.50
Cloud
Opacity
tenths
(81)
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
12.9
12.9
12.9
12.9
12.9
12.9
4.8
3.2
3.2
1.6
1.2
1.2
1.2
0.8
0.4
0.4
0.4
0.0
0.4
0.4
0.4
0.8
0.8
0.8
1.0
1.2
1.0
1.0
0.8
0.8
1.2
3.2
19.3
1.6
3.2
1.6
1.6
3.2
16.1
24.1
24.1
24.1
32.2
RH
Cloud
Amount WEATHER
tenths (83-106,
(82)
260)
8
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
-
-
SSSSSSSS
SBS
SBS
SBS
SBS
SBS
SBS
SBS
S-BS
S-BS
S-BS
S-BS
SSSS-BS
S-BS
S-BS
S-BS
SSSSSS-
SWSW-
6. Baie-Comeau A
YYYY/MM/DD/HH:MM
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
4/ 6:00
4/ 7:00
4/ 8:00
4/ 9:00
4/10:00
4/11:00
4/12:00
4/13:00
4/14:00
4/15:00
4/16:00
4/17:00
4/18:00
4/19:00
4/20:00
4/21:00
4/22:00
4/23:00
5/ 0:00
5/ 1:00
5/ 2:00
5/ 3:00
5/ 4:00
5/ 5:00
5/ 6:00
5/ 7:00
5/ 8:00
5/ 9:00
5/10:00
5/11:00
5/12:00
Ceiling
30's m
(71)
100
70
20
25
23
18
12
4
1
0
0
0
0
0
0
0
0
0
0
0
6
12
13
20
20
18
18
18
16
14
18
March 6, 2001
Vis
%
(80)
85
83
89
88
88
90
91
94
92
95
95
95
95
96
96
96
96
96
96
96
96
96
96
90
91
90
84
84
84
87
90
Cloud
Amount WEATHER
tenths (83-106,
(82)
260)
9 10 10 10 10 10 10
S-BS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S10 10 10 10 -
8
Mont-Joli
YYYY/MM/DD/HH:MM
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
4/ 6:00
4/ 7:00
4/ 8:00
4/ 9:00
4/10:00
4/11:00
4/12:00
4/13:00
4/14:00
4/15:00
4/16:00
4/17:00
4/18:00
4/19:00
4/20:00
4/21:00
4/22:00
4/23:00
5/ 0:00
5/ 1:00
5/ 2:00
5/ 3:00
5/ 4:00
5/ 5:00
5/ 6:00
5/ 7:00
5/ 8:00
5/ 9:00
5/10:00
5/11:00
5/12:00
5/13:00
5/14:00
5/15:00
5/16:00
5/17:00
5/18:00
5/19:00
5/20:00
5/21:00
5/22:00
5/23:00
6/ 0:00
6/ 1:00
6/ 2:00
6/ 3:00
6/ 4:00
6/ 5:00
6/ 6:00
Ceiling
30's m
(71)
90
90
90
20
20
5
2
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
3
7
12
5
4
4
4
8
8
15
13
13
13
22
22
22
25
22
22
23
20
UNL
Vis
Wind
Directn
km 10's deg
(72) (156/75)
24.1
6
24.1
6
24.1
6
24.1
7
16.1
5
0.8
5
0.2
5
0.2
4
0.2
5
0.0
6
0.0
5
0.0
4
0.0
5
0.0
5
0.0
5
0.0
5
0.0
6
0.0
5
0.2
5
0.2
5
0.2
5
0.2
3
0.2
3
0.2
3
0.2
3
0.2
3
0.2
2
0.2
2
1.2
1
4.8
1
0.4
36
0.4
35
0.4
34
0.4
34
0.8
34
0.8
34
2.4
34
2.4
34
2.4
33
1.6
34
12.9
35
12.9
34
12.9
35
16.1
34
16.1
34
19.3
34
16.1
34
16.1
33
25.0
34
Wind
Speed
km/hr
(76)
19
26
29
21
26
24
32
40
45
53
56
56
64
56
64
48
56
45
45
40
40
37
40
48
40
40
35
39
35
35
35
32
32
32
42
40
37
37
35
32
29
37
35
27
32
27
31
31
31
Dry
Bulb
deg C
(78)
-7.2
-6.7
-6.1
-5.6
-5.6
-6.1
-5.0
-5.0
-5.0
-4.4
-5.0
-4.4
-4.4
-4.4
-4.4
-4.4
-4.4
-3.9
-3.9
-3.9
-3.3
-3.3
-3.9
-3.9
-3.9
-3.3
-3.9
-3.9
-3.9
-3.3
-3.9
-3.9
-3.9
-3.9
-4.4
-3.9
-4.4
-4.4
-4.4
-5.6
-5.6
-6.1
-6.7
-7.2
-7.8
-7.8
-8.3
-8.9
-8.9
Wet
Bulb
deg C
(79)
-8.3
-7.2
-6.7
-6.7
-6.1
-6.1
-5.6
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-5.0
-4.4
-4.4
-3.9
-3.9
-3.9
-3.9
-3.3
-3.9
-3.9
-3.9
-3.9
-3.9
-3.9
-3.9
-3.9
-3.9
-3.9
-3.9
-3.9
-4.4
-3.9
-4.4
-4.4
-5.0
-5.6
-6.1
-6.7
-7.2
-7.8
-8.3
-8.9
-8.9
-9.4
-10.0
Dew
Point
deg C
(74)
-11.1
-10.0
-9.4
-10.0
-8.3
-7.2
-6.7
-6.7
-5.6
-5.6
-5.6
-6.1
-6.1
-6.1
-6.1
-5.6
-5.6
-5.0
-5.0
-5.0
-4.4
-4.4
-4.4
-5.0
-4.4
-4.4
-5.0
-5.0
-5.6
-5.6
-5.6
-5.0
-5.0
-4.4
-5.0
-5.0
-6.1
-6.1
-6.7
-7.2
-8.3
-9.4
-10.0
-10.6
-11.7
-12.2
-12.2
-12.8
-13.3
Wind
Speed
km/hr
(76)
0
11
8
0
0
14
21
29
31
31
32
35
21
19
23
19
16
10
13
5
5
16
16
19
32
32
34
24
Dry
Bulb
deg C
(78)
-13.9
-13.3
-12.2
-10.0
-8.9
-5.6
-5.6
-5.6
-5.6
-5.6
-5.0
-5.0
-1.7
-1.7
-1.7
-1.7
-1.7
-1.1
-1.1
-1.1
-1.7
-7.2
-7.2
-6.7
-5.6
-5.6
-4.4
-4.4
Wet
Bulb
deg C
(79)
-14.4
-13.3
-12.2
-10.6
-9.4
-6.1
-5.6
-6.1
-5.6
-5.6
-5.0
-5.0
-1.7
-1.7
-1.7
-1.7
-1.7
-1.1
-1.1
-1.7
-2.2
-7.8
-7.2
-6.7
-6.1
-5.6
-5.0
-5.0
Dew
Point
deg C
(74)
-16.7
-15.6
-13.9
-13.3
-12.2
-7.2
-7.2
-7.2
-6.1
-6.7
-5.6
-5.6
-1.7
-1.7
-1.7
-1.7
-2.2
-1.7
-1.7
-2.2
-3.3
-10.0
-9.4
-8.9
-8.3
-7.2
-6.7
-7.2
RH
%
(80)
76
79
78
71
80
90
90
86
92
93
95
89
91
91
91
94
93
92
92
92
94
94
94
94
95
93
92
91
89
85
88
91
92
94
99
92
88
88
87
86
81
77
77
77
72
70
71
73
71
MSL
Press
kPa
(73)
101.37
101.32
101.17
101.08
100.86
100.72
100.38
100.08
99.76
99.40
99.23
99.09
98.97
98.79
98.60
98.45
98.33
98.17
98.11
98.08
98.01
97.98
97.95
98.02
98.09
98.12
98.23
98.33
98.45
98.59
98.73
98.78
98.96
99.08
99.22
99.40
99.46
99.66
99.82
99.90
99.94
99.96
100.08
100.10
100.19
100.28
100.36
100.43
100.51
Station
Press
kPa
(77)
100.79
100.74
100.59
100.50
100.28
100.14
99.80
99.50
99.18
98.82
98.66
98.52
98.40
98.22
98.03
97.88
97.76
97.60
97.54
97.51
97.44
97.41
97.38
97.45
97.52
97.55
97.66
97.76
97.88
98.02
98.16
98.22
98.40
98.52
98.64
98.82
98.88
99.08
99.24
99.32
99.36
99.38
99.50
99.52
99.61
99.70
99.78
99.85
99.93
Cloud
Opacity
tenths
(81)
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
6
3
Cloud
Amount WEATHER
tenths (83-106,
(82)
260)
10 10 10 10 10 10
S
10
S+
10
S-BS
10
S-BS
10
SBS
10
SBS
10
SBS
10
SBS
10
S-BS
10
S-BS
10
S-BS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
SBS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
S-BS
10
SW10
SW10
SW10
SW10 10 10 6 3 -
MSL
Press
kPa
(73)
101.79
101.70
101.62
101.49
101.44
101.27
101.11
100.94
100.80
100.49
100.31
100.00
97.97
98.02
98.06
98.09
98.14
98.20
98.29
98.38
98.47
99.69
99.77
99.81
99.86
99.91
99.98
99.99
Station
Press
kPa
(77)
101.43
101.34
101.26
101.13
101.08
100.91
100.75
100.58
100.44
100.13
99.95
99.64
97.63
97.68
97.72
97.75
97.80
97.86
97.95
98.04
98.13
99.34
99.42
99.46
99.51
99.56
99.63
99.64
Cloud
Opacity
tenths
(81)
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
7
9
8
5
7
9
7
7
Cloud
Amount WEATHER
tenths (83-106,
(82)
260)
10 10 10 10 10 10
SW10
SW10
SW10
S
10
S
10
S+BS
10
S+BS
10
S-F
10
S-F
10
S-F
10
S10
S10
SW10
SW10
SW7
SW10
SW8
SW5
SW7
SW9
SW7
SW7 -
8. Gaspé A
YYYY/MM/DD/HH:MM
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
1971/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
3/
4/ 6:00
4/ 7:00
4/ 8:00
4/ 9:00
4/10:00
4/11:00
4/12:00
4/13:00
4/14:00
4/15:00
4/16:00
4/17:00
5/ 9:00
5/10:00
5/11:00
5/12:00
5/13:00
5/14:00
5/15:00
5/16:00
5/17:00
6/ 6:00
6/ 7:00
6/ 8:00
6/ 9:00
6/10:00
6/11:00
6/12:00
Ceiling
30's m
(71)
120
100
12
12
9
9
10
10
6
6
4
2
3
5
7
4
8
18
20
20
20
30
30
UNL
35
35
35
35
March 6, 2001
Vis
Wind
Directn
km 10's deg
(72) (156/75)
25.0
0
25.0
24
24.1
23
24.1
0
24.1
0
24.1
8
24.1
6
24.1
7
0.8
6
0.8
6
0.2
6
0.2
6
1.2
8
3.2
8
4.0
7
1.2
8
1.2
6
8.0
3
16.1
1
16.1
36
19.3
33
19.3
30
19.3
30
19.3
31
24.1
32
24.1
32
24.1
30
25.0
30
RH
%
(80)
81
82
86
78
78
86
90
91
95
96
96
96
98
98
98
98
97
96
97
91
90
82
84
84
82
85
84
81
9
APPENDIX C
Snow Accumulation Totals for March 3–5, 1971
STATION
CUMUL (CM)
STATION
CUMUL (CM)
STATION
CUMUL (CM)
STATION
BARRIERE STONEHAM
46.7
MONTREAL/DORVAL INT'L A
47
STE AGATHE DES MONTS
42.9
STE ANNE DES MONTS
CUMUL (CM)
33
BERTHIERVILLE
47
MONTREAL JAR BOT
53.9
STE ANNE DU LAC
14.7
ST BRUNO KAMOURASKA
41.2
CHARLESBOURG JAR ZOO
28.9
MONTREAL JEAN BREBEUF
48.6
ST FAUSTIN
59.4
ST CAMILLE
45.4
CHUTE PANET
36.9
MONTREAL LAFONTAINE
44.5
ST HIPPOLYTE
48.3
ST CHARLES GARNIER
62
COTEAU DU LAC
47
MONTREAL MCGILL
50.3
ST JEROME
53.3
ST CLEMENT
63
DONNACONA 2
34.3
NICOLET
35.6
SHAWVILLE
32
ST ELEUTHERE
74.2
DUCHESNAY
23.1
ORMSTOWN
54.6
SHEENBORO
7.6
BONAVENTURE
35.6
JOLIETTE
48.3
PHILIPSBURG
33.5
TAPINI FARM
17.2
STE GERMAINE
43.2
JOLIETTE VILLE
33.5
ROUGEMONT
44.7
THURSO
34.6
ST GUY
49.3
LAC JACQUES CARTIER
69.9
ROXTON FALLS
38.1
WAKEFIELD
30.5
ST JEAN DE CHERBOURG
30.4
LAC MINOGAMI
55.9
SACRE COEUR DE MARIE
39.6
WALTHAM
14
STE LUCIE
48.3
L'ASSOMPTION CDA
43.4
ST ANICET
53.8
WRIGHT
25.4
ST MALACHIE
54.4
LAVALTRIE CDA
46.3
STE ANNE DE BELLEVUE
38.1
BAIE COMEAU A
43.4
ST PAMPHILE
60.7
LES CEDRES
45.7
ST BENOIT LABRE
35.6
BAIE ST PAUL
46.8
ST PAULIN D'ALIBAIRE
61
LOUISEVILLE
34.3
STE CLOTHILDE CDA
49.5
BLANC SABLON
20.4
STE PERPETUE
38.1
OKA LA TRAPPE
46.9
ST COME DE LINIERE
20.3
BLANC SABLON
32.3
ST RAPHAEL
54.6
QUEBEC ANC LORETTE A
44.3
STE EDWIDGE
40.7
CAP TOURMENTE
36.1
STE ROSE DU DEGELIS
41.1
RIGAUD
45.7
ST EPHREM
30.5
CHUTE AUX OUTARDES
17.8
SQUATECK
41.9
RIVIERE VERTE OUEST
34.1
ST FLAVIEN
44.5
CLARKE CITY
22.8
TRINITE DES MONTS
54.8
ST ALBAN
34.3
STE FRANCOISE ROMAINE
20.1
FORESTVILLE
17.3
TROIS PISTOLES
35.5
ST ALEXIS DES MONTS
43.2
ST GEDEON
22.6
FORET MONTMORENCY
46.7
VAL D ESPOIR
42.7
STE ANNE DE LA PERADE
43.1
PIERREFOND
43
GAGNON A
19.3
ALBANEL
30.5
ST AUGUSTIN
46.7
ST GEORGES
15.2
GETHSEMANIE
11.2
ARVIDA
8.4
STE CATHERINE
29.9
ST GUILLAUME
45.8
GRANDES BERGERONNES
40.6
BAGOTVILLE A
19.3
ST CHARLES DE MANDEVILLE
44.2
ST HUBERT A
58
GRAND FONDS
66.5
BARRIERE N CHIBOUGAMAU
13.2
STE CHRISTINE
22.9
ST HYACINTHE
49.6
HARRINGTON HARBOUR
51.8
CHEMIN CHUTE DES PASSES
7.6
ST CLET NORTH
51.3
ST HYACINTHE 2
48.3
HAVRE ST PIERRE A
24.3
CHICOUTIMI
7.6
ST COME
63.5
ST ISIDORE D'AUCKLAND
45.7
LABRIEVILLE B1
35.6
CHUTE SAVANE
6.4
ST DONAT
39.9
ST JEAN CHRYSOSTOME
24.9
LA GALETTE
35.6
CHUTE DES PASSES
10.9
ST GABRIEL DE BRANDON
25.4
ST LUDGER
29.6
LAKE EON
40.2
CHUTE DU DIABLE
1.8
ST JACQUES
45.7
ST MALO D AUCKLAND
39.5
LA MALBAIE
41.2
FERLAND
35.6
11.4
ST LAZARE
53.3
STE MARTINE
41.9
LES EBOULEMENTS
39.1
HEMON
ST LIN DES LAURENTIDES
39.1
ST MATHIEU LAPRAIRIE
45.8
MANIC 2 LB1
30
ISLE MALIGNE
8.9
ST PAULIN
38.1
ST ODILON
41
MANICOUAGAN A
20.8
JONQUIERE
14.8
STE THERESE WEST
30.4
ST PROSPER
27.2
NATASHQUAN A
38.6
KENOGAMI
8.9
ST TITE
66
ST REMI
50.8
NOTRE DAME DES MONTS
45.8
LAC BOUCHETTE
54.9
SHAWINIGAN FALLS
49.6
STE ROSALIE
45.8
PENTECOTE
49.8
LAC DES COMMISSAIRES
56.2
TROIS RIVIERES
52.1
ST SEBASTIEN CDA FE
42.2
PETIT SAGUENAY
43.7
LAC STE CROIX CDA FE
22.9
VALCARTIER FES
39.1
ST THEOPHILE
39.6
RIVIERE ST AUGUSTIN
22.8
LATERRIERE
19.3
ABERCORN
36.5
ST VALERIEN
67.8
ST FIDELE
29.5
MESY
44.2
ACTON VALE
57.4
ST ZACHARIE
22.9
ST FIDELE 2
38.1
MISTASSINI
15.2
ARTHABASKA
39.7
SAWYERVILLE
25.4
ST SIMEON
43.1
MONT APICA
80.2
ASBESTOS
40.7
SAWYERVILLE NORD
47.5
ST TITE DES CAPS
14.7
NORMANDIN CDA
21.9
BEAUCEVILLE
33.5
SCOTT
46.2
ST URBAIN DE CHARLEVOIX
37.6
PERIBONCA CDA FE
13.8
BECANCOUR
35.6
SHERBROOKE
45.7
SEVEN ISLANDS A
26.2
PORTAGE DES ROCHES
27.4
BETHANIE
53.4
SHERBROOKE A
30.5
TADOUSSAC
49.8
RIVIERE AUX RATS
11.2
BISHOPTON
34.3
SOREL
40.6
TETE A LA BALEINE
34.3
ROBERVAL A
32.8
BONSECOURS
62.5
SOUTH DURHAM
40.4
ALBERTVILLE
44.2
ST AMBROISE
16.8
BRIGHAM
53.8
STANHOPE
62.2
AMQUI
22.4
ST COEUR DE MARIE
5.1
BRITANNIA MILLS
40.6
STANSTEAD
48.2
ARMAGH STATION
41.6
ST LEON DE LABRECQUE
7.9
BROME
50.1
SUTTON
45.9
LAKE MORIN DAM
78.2
SHIPSHAW
4.7
BROMPTONVILLE
37.3
SUTTON JONCTION
32
BERRY MOUNTAIN
17.3
VAN BRUYSSEL
33.5
BURY
42
THETFORD MINES CDA FE
32.5
BIC SANTERRE
45.8
RIVER MANUAN
38.1
CHARTIERVILLE
59.9
UPTON
72.6
CAP CHAT
40.6
GOUIN DAM
36.9
HEMMINGS FALLS
50.7
VALCOURT
73
CAPLAN CDA
51.5
MATTAWIN DAM
35.6
COATICOOK
45.7
VALLEE JONCTION
27.9
CAP MADELEINE
39.6
LA TUQUE
52.1
COMPTON STATION CDA FE
35.6
VALLEYFIELD
53.3
CAP SEIZE
61.8
MANOUAN SANMAUR
26.9
COOKSHIRE
47
VERCHERES
42.2
CAUSAPSCAL
25.4
OSKELANEO
20.4
DISRAELI (BGE ALLARD)
51.6
WARDEN
55.9
CAUSAPSCAL RESEARCH ST
22.9
PARENT (AUT)
30.3
DRUMMONDVILLE
51.5
WEST DITTON
48.8
CORTEREAL
30.5
RAPIDE BLANC
45.6
DUNHAM
40.1
ANGERS
27.4
GASPE
58.4
ST MICHEL DES SAINTS
35.6
EAST ANGUS
60.5
ARUNDEL
44.2
GASPE A
40.7
TEMISCAMINGUE DAM
0.3
EAST HEREFORD
53.6
MERCIER DAM
11.7
GRANDE RIVIERE
44.7
BELLETERRE
5.2
EATON SECOND BRANCH
37.4
BARRIERE QUINN
10.2
GRANDE VALLEE
66.3
GRAND LAKE VICTORIA
6.1
FARNHAM
39.1
BELL FALLS
38.6
GRINDSTONE ISLAND
11.7
KIPAWA LANIEL
0
FLEURY
50.8
BUCKINGHAM
28.7
HONFLEUR
41.7
MANNEVILLE
1.5
March 6, 2001
10