Station Overview Station Location
Station Number CAN-QC-37 Latitude 45.553589
Station Name Laval 3.8 SSW Longitude -73.769761
County Quebec Elevation (ft) 116



Month Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 19 8.85 31 6.33 25 2.52 6 2 14 0 0.0 0 0
Nov 19 4.95 30 4.95 26 0.00 4 1 17 4 8.4 7 2
Dec 19 3.00 31 3.00 31 0.00 0 0 12 2 14.9 8 2
Jan 20 4.87 31 4.87 31 0.00 0 0 16 3 24.0 14 3
Feb 20 3.28 27 3.24 25 0.04 2 1 11 4 24.6 11 4
March 20 5.22 31 4.05 20 1.17 11 1 10 2 4.3 2 2
April 20 3.21 30 3.21 30 0.00 0 0 10 1 0.0 0 0
May 20 1.64 31 1.64 31 0.00 0 0 10 2 0.0 0 0
June 20 2.99 30 2.99 30 0.00 0 0 12 5 0.0 0 0
July 20 2.66 31 2.66 31 0.00 0 0 15 1 0.0 0 0
Aug 20 8.16 31 8.16 31 0.00 0 0 17 1 0.0 0 0
Sept 20 2.40 30 2.40 30 0.00 0 0 8 6 0.0 0 0
Water Year Totals: 51.23" 364 days 47.50" 341 3.73" 23 days 5 152 days 31 days 76.2" 42 days 13 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2019 **
10/2/2019 **
10/3/2019 2.25
10/4/2019 0.16
10/5/2019 **
10/6/2019 **
10/7/2019 0.27
10/8/2019 0.01
10/9/2019 0.00
10/10/2019 0.00
10/11/2019 0.00
10/12/2019 0.00
10/13/2019 0.03
10/14/2019 0.00
10/15/2019 0.01
10/16/2019 0.00
10/17/2019 1.85
10/18/2019 1.18
10/19/2019 0.01
10/20/2019 0.00
10/21/2019 0.00
10/22/2019 0.00
10/23/2019 1.24
10/24/2019 0.02
10/25/2019 0.01
10/26/2019 0.00
10/27/2019 0.05
10/28/2019 1.59
10/29/2019 0.02
10/30/2019 0.00
10/31/2019 0.15
11/1/2019 2.39
11/2/2019 0.02
11/3/2019 0.02
11/4/2019 0.01
11/5/2019 0.03
11/6/2019 0.38
11/7/2019 0.20
11/8/2019 0.11
11/9/2019 T
11/10/2019 T
11/11/2019 0.01
11/12/2019 0.66
11/13/2019 T
11/14/2019 T
11/15/2019 0.06
11/16/2019 0.01
11/17/2019 0.00
11/18/2019 0.00
11/19/2019 0.02
11/20/2019 0.11
11/21/2019 0.05
11/22/2019 0.20
11/23/2019 **
11/24/2019 **
11/25/2019 **
11/26/2019 T
11/27/2019 0.00
11/28/2019 0.67
11/29/2019 0.00
11/30/2019 0.00
12/1/2019 0.00
12/2/2019 0.00
12/3/2019 0.00
12/4/2019 0.00
12/5/2019 0.20
12/6/2019 T
12/7/2019 0.02
12/8/2019 0.00
12/9/2019 0.07
12/10/2019 0.37
12/11/2019 0.00
12/12/2019 0.04
12/13/2019 0.00
12/14/2019 0.28
12/15/2019 0.38
12/16/2019 T
12/17/2019 0.00
12/18/2019 0.07
12/19/2019 0.09
12/20/2019 0.00
12/21/2019 0.00
12/22/2019 0.00
12/23/2019 0.00
12/24/2019 0.00
12/25/2019 0.00
12/26/2019 0.00
12/27/2019 0.10
12/28/2019 0.28
12/29/2019 0.00
12/30/2019 0.00
12/31/2019 1.10
Day of YearDaily PrcpMultiday Prcp
1/1/2020 0.34
1/2/2020 0.00
1/3/2020 0.00
1/4/2020 0.00
1/5/2020 0.04
1/6/2020 T
1/7/2020 0.12
1/8/2020 0.09
1/9/2020 T
1/10/2020 T
1/11/2020 0.20
1/12/2020 2.17
1/13/2020 0.12
1/14/2020 0.02
1/15/2020 0.08
1/16/2020 0.13
1/17/2020 0.07
1/18/2020 0.00
1/19/2020 0.46
1/20/2020 0.01
1/21/2020 0.00
1/22/2020 0.00
1/23/2020 0.00
1/24/2020 0.00
1/25/2020 0.00
1/26/2020 0.78
1/27/2020 0.20
1/28/2020 0.04
1/29/2020 0.00
1/30/2020 0.00
1/31/2020 0.00
2/1/2020
2/2/2020
2/3/2020 **
2/4/2020 0.04
2/5/2020 0.00
2/6/2020 0.02
2/7/2020 0.68
2/8/2020 0.61
2/9/2020 0.00
2/10/2020 0.29
2/11/2020 0.07
2/12/2020 0.00
2/13/2020 0.02
2/14/2020 0.11
2/15/2020 T
2/16/2020 0.01
2/17/2020 0.00
2/18/2020 0.00
2/19/2020 0.30
2/20/2020 T
2/21/2020 0.00
2/22/2020 T
2/23/2020 0.00
2/24/2020 0.00
2/25/2020 0.00
2/26/2020 0.00
2/27/2020 0.36
2/28/2020 0.77
2/29/2020 T
3/1/2020 0.00
3/2/2020 0.00
3/3/2020 0.41
3/4/2020 0.42
3/5/2020 T
3/6/2020 0.01
3/7/2020 0.03
3/8/2020 0.00
3/9/2020 **
3/10/2020 **
3/11/2020 **
3/12/2020 **
3/13/2020 **
3/14/2020 **
3/15/2020 **
3/16/2020 **
3/17/2020 **
3/18/2020 **
3/19/2020 1.17
3/20/2020 0.21
3/21/2020 0.48
3/22/2020 0.00
3/23/2020 0.00
3/24/2020 0.27
3/25/2020 0.00
3/26/2020 T
3/27/2020 0.07
3/28/2020 0.00
3/29/2020 0.00
3/30/2020 1.82
3/31/2020 0.33
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.00
4/2/2020 0.00
4/3/2020 0.95
4/4/2020 0.13
4/5/2020 0.00
4/6/2020 0.01
4/7/2020 0.00
4/8/2020 0.00
4/9/2020 0.00
4/10/2020 0.48
4/11/2020 0.05
4/12/2020 0.00
4/13/2020 0.26
4/14/2020 1.08
4/15/2020 0.00
4/16/2020 0.00
4/17/2020 T
4/18/2020 0.00
4/19/2020 0.00
4/20/2020 0.09
4/21/2020 0.00
4/22/2020 0.11
4/23/2020 0.00
4/24/2020 0.00
4/25/2020 0.00
4/26/2020 0.00
4/27/2020 0.00
4/28/2020 0.00
4/29/2020 0.00
4/30/2020 0.05
5/1/2020 0.39
5/2/2020 0.01
5/3/2020 0.05
5/4/2020 0.19
5/5/2020 0.00
5/6/2020 0.00
5/7/2020 0.00
5/8/2020 0.01
5/9/2020 T
5/10/2020 T
5/11/2020 0.00
5/12/2020 0.00
5/13/2020 0.00
5/14/2020 0.00
5/15/2020 0.01
5/16/2020 0.66
5/17/2020 0.00
5/18/2020 0.00
5/19/2020 0.00
5/20/2020 0.00
5/21/2020 0.00
5/22/2020 0.00
5/23/2020 0.00
5/24/2020 0.00
5/25/2020 0.00
5/26/2020 0.00
5/27/2020 0.00
5/28/2020 0.00
5/29/2020 0.01
5/30/2020 0.03
5/31/2020 0.28
6/1/2020 0.01
6/2/2020 0.02
6/3/2020 0.01
6/4/2020 T
6/5/2020 0.00
6/6/2020 0.60
6/7/2020 0.01
6/8/2020 0.00
6/9/2020 T
6/10/2020 0.00
6/11/2020 0.02
6/12/2020 0.04
6/13/2020 0.00
6/14/2020 0.01
6/15/2020 0.00
6/16/2020 0.00
6/17/2020 0.00
6/18/2020 0.00
6/19/2020 0.00
6/20/2020 0.00
6/21/2020 0.00
6/22/2020 0.00
6/23/2020 T
6/24/2020 1.03
6/25/2020 0.00
6/26/2020 T
6/27/2020 0.02
6/28/2020 0.28
6/29/2020 0.94
6/30/2020 T
Day of YearDaily PrcpMultiday Prcp
7/1/2020 0.01
7/2/2020 0.00
7/3/2020 T
7/4/2020 0.00
7/5/2020 0.00
7/6/2020 0.01
7/7/2020 0.00
7/8/2020 0.12
7/9/2020 0.00
7/10/2020 0.00
7/11/2020 0.03
7/12/2020 0.46
7/13/2020 0.01
7/14/2020 0.00
7/15/2020 0.00
7/16/2020 0.00
7/17/2020 0.61
7/18/2020 0.05
7/19/2020 0.15
7/20/2020 0.32
7/21/2020 0.00
7/22/2020 0.00
7/23/2020 0.01
7/24/2020 0.00
7/25/2020 0.00
7/26/2020 0.00
7/27/2020 0.51
7/28/2020 0.24
7/29/2020 0.00
7/30/2020 0.11
7/31/2020 0.02
8/1/2020 0.04
8/2/2020 0.00
8/3/2020 1.50
8/4/2020 0.10
8/5/2020 1.52
8/6/2020 0.14
8/7/2020 0.00
8/8/2020 0.00
8/9/2020 0.00
8/10/2020 0.04
8/11/2020 0.00
8/12/2020 0.45
8/13/2020 0.00
8/14/2020 0.00
8/15/2020 0.00
8/16/2020 0.00
8/17/2020 0.01
8/18/2020 0.13
8/19/2020 0.14
8/20/2020 0.00
8/21/2020 0.39
8/22/2020 0.05
8/23/2020 0.54
8/24/2020 0.94
8/25/2020 0.02
8/26/2020 0.00
8/27/2020 0.00
8/28/2020 T
8/29/2020 0.13
8/30/2020 2.02
8/31/2020 0.00
9/1/2020 0.00
9/2/2020 0.02
9/3/2020 0.23
9/4/2020 0.01
9/5/2020 T
9/6/2020 0.00
9/7/2020 0.00
9/8/2020 0.14
9/9/2020 0.11
9/10/2020 T
9/11/2020 T
9/12/2020 0.00
9/13/2020 0.00
9/14/2020 0.74
9/15/2020 0.00
9/16/2020 T
9/17/2020 0.00
9/18/2020 0.00
9/19/2020 0.00
9/20/2020 0.00
9/21/2020 0.00
9/22/2020 0.00
9/23/2020 0.00
9/24/2020 0.00
9/25/2020 0.04
9/26/2020 T
9/27/2020 0.00
9/28/2020 0.00
9/29/2020 T
9/30/2020 1.11



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/4/2019 7:00 AM 0.16 M M M M
10/8/2019 8:00 AM 0.01 M M M M 7.0 C and clear.
10/9/2019 8:00 AM 0.00 0.0 M M M 6.0 C and clear.
10/10/2019 8:00 AM 0.00 0.0 M M M 7.5 C and mostly cloudy.
10/11/2019 8:00 AM 0.00 0.0 M M M 7.0 C and clear
10/12/2019 8:00 AM 0.00 0.0 M M M 8.0 C and clear.
10/13/2019 8:00 AM 0.03 M M M M 5.5 C and clear
10/14/2019 8:00 AM 0.00 0.0 M M M 6.5 C and mostly cloudy.
10/15/2019 8:00 AM 0.01 M M M M 3.5 C an clear
10/16/2019 8:00 AM 0.00 0.0 M M M
10/17/2019 8:00 AM 1.85 M M M M 6.0 C, strong winds and moderate rain at observation time.
10/18/2019 8:00 AM 1.18 M M M M 8.0 C and cloudy
10/19/2019 8:00 AM 0.01 M M M M 1.0 C and clear.
10/20/2019 6:20 AM 0.00 0.0 M M M 1.5 C
10/21/2019 8:00 AM 0.00 0.0 M M M 1.0 C and clear
10/22/2019 8:00 AM 0.00 0.0 M M M 8.0 C and cloudy
10/23/2019 8:00 AM 1.24 M M M M 10.5 C and mostly clear
10/24/2019 8:00 AM 0.02 M M M M 7.0 C and mostly clear.
10/25/2019 8:00 AM 0.01 M M M M 3.5 C and cloudy
10/26/2019 8:00 AM 0.00 0.0 M M M 3.0 C and clear
10/27/2019 8:00 AM 0.05 M M M M 6.0 C and light rain at time of observation.
10/28/2019 8:00 AM 1.59 M M M M 7.5 C and overcast.
10/29/2019 8:00 AM 0.02 M M M M 5.5 C and fog lifting to become clear.
10/30/2019 8:00 AM 0.00 0.0 M M M 14.0 C and cloudy.
10/31/2019 8:15 AM 0.15 M M M M 8.5 C and overcast
11/1/2019 8:00 AM 2.39 M M M M 5.5 C, overcast and very windy.
11/2/2019 8:00 AM 0.02 0.0 0.00 0.0 0.00 0.0 C and partly cloudy.
11/3/2019 8:00 AM 0.02 0.0 0.00 M M 4.0 C and overcast.
11/4/2019 8:00 AM 0.01 0.0 0.00 0.0 0.00 2.0 C and mostly clear
11/5/2019 8:00 AM 0.03 0.0 0.00 M M 7.5 C and light rain.
11/6/2019 8:00 AM 0.38 T T M M 1.0 C and sunny with a trace of snow on the ground.
11/7/2019 8:00 AM 0.20 0.3 0.20 M M +0.5 C and light wet snow.
11/8/2019 8:00 AM 0.11 T M M M -4.5 C and thin overcast
11/9/2019 8:00 AM T T M M M -4.5, sunny with some thin overcast.
11/10/2019 8:00 AM T T M M M 2.5 C and overcast.
11/11/2019 8:00 AM 0.01 0.3 0.01 0.3 0.01 -6.0 C and overcast.
11/12/2019 8:00 AM 0.66 5.4 0.58 M M -6.5 and very light snow ending.
11/13/2019 8:00 AM T T T M M -11.5 C and sunny.
11/14/2019 8:00 AM T T T M M -6.5 C and partly cloudy.
11/15/2019 8:00 AM 0.06 0.8 0.07 M M -0.5 and overcast
11/16/2019 7:00 AM 0.01 0.3 M M M -13.5 C and clear.
11/17/2019 8:00 AM 0.00 0.0 0.00 M M -11.0 C and sunny
11/18/2019 8:00 AM 0.00 0.0 0.00 3.5 0.51 -9.0 C and mostly clear with high thin cirrus. Ground measurements taken at noon.
11/19/2019 8:00 AM 0.02 M M M M -1.0 C and a very fine freezing drizzle at observation time. A very thin layer, less than 1/10 of an inch, of freezing rain on the board and ground.
11/20/2019 8:00 AM 0.11 0.9 M M M -0.5 and very light snow, no wind.
11/21/2019 8:00 AM 0.05 M M M M -5.0 and sunny. Gauge covered by frost. Removed the frost on the outside of the gauge. Accumulation of 0.05' is the result of very light wet snow yesterday. A hard thin crust of ice on the snowboard. Impossible to measure its thickness.
11/22/2019 6:30 AM 0.20 0.0 0.00 M M +2.5 C and some drizzle
11/27/2019 8:00 AM 0.00 0.0 0.00 0.0 0.00 1.0 C and overcast. A light ground frost.
11/28/2019 8:00 AM 0.67 0.4 M M M -0.5 C and overcast. Total precipitation is mostly the result of rain followed by some snow accumulating to 0.4 ".
11/29/2019 8:00 AM 0.00 0.0 0.00 M M -3.5 C and sunny.
11/30/2019 8:00 AM 0.00 0.0 0.00 M M -10.5 C and sunny.
12/1/2019 8:00 AM 0.00 0.0 0.00 M M -11 C and sunny.
12/2/2019 8:00 AM 0.00 0.0 0.00 T M -7.5 C and some cloud towards the east. No snow on the ground over sunny locations. A trace of snow in shaded areas.
12/3/2019 8:00 AM 0.00 0.0 0.00 M M -7.0 and clear.
12/4/2019 8:00 AM 0.00 0.0 0.00 M M -3.0 C and mostly cloudy
12/5/2019 8:00 AM 0.20 3.2 0.20 M M -3.0 C and overcast. The same amount of precipitable water has been measured from both the collecting tube and the from the snowboard.
12/6/2019 8:00 AM T T M M M -5.0 and very light snow
12/7/2019 8:00 AM 0.02 0.3 M M M -11.0 C and mostly clear
12/8/2019 8:00 AM 0.00 0.0 0.00 M M -8.5 C and some high clouds
12/9/2019 8:00 AM 0.07 0.3 M 2.5 0.24 +1.0 C and overcast and a very light drizzle or snow.
12/10/2019 8:00 AM 0.37 0.0 0.00 M M +8.5 C and cloudy.
12/11/2019 8:00 AM 0.00 0.0 0.00 M M -11.0 C and clear.
12/12/2019 8:00 AM 0.04 0.5 0.04 M M -10.0 C and clear.
12/13/2019 8:00 AM 0.00 0.0 0.00 M M -3.5 C and mostly clear.
12/14/2019 8:00 AM 0.28 0.0 0.00 M M +0.5 and cloudy
12/15/2019 8:00 AM 0.38 0.2 M M M -1.0, cloudy and very windy.
12/16/2019 8:00 AM T T M T M -11.5 C and clear at observation time. A few snowflakes were seen falling yesterday.
12/17/2019 8:00 AM 0.00 0.0 0.00 M M -3.5 C and cloudy
12/18/2019 8:00 AM 0.07 1.4 0.07 M M -4.5 C and very very light snow.
12/19/2019 8:00 AM 0.09 1.5 0.09 M M -18.5 C and partly cloudy.
12/20/2019 8:00 AM 0.00 0.0 0.00 M M -16.0 C and clear.
12/21/2019 8:00 AM 0.00 0.0 0.00 M M -13.0 C with some thin high clouds.
12/22/2019 8:00 AM 0.00 0.0 0.00 M M -9.5 C and mostly cloudy
12/23/2019 8:00 AM 0.00 0.0 0.00 1.5 0.13 -2.0 C and clear. Snow measurements on the ground are very approximate and vary according to exposure to the sun. No snow on some sunny locations.
12/24/2019 8:00 AM 0.00 0.0 0.00 T M -4.5 C and clear. No snow on the ground in sunny or partially sunny locations. Some patchy snow on mainly shaded areas.
12/25/2019 8:00 AM 0.00 0.0 0.00 M M -6.5 C and partly cloudy
12/26/2019 8:00 AM 0.00 0.0 0.00 M M -9.5 C and clear.
12/27/2019 8:00 AM 0.10 0.0 0.00 M M -3.5 C and some light freezing drizzle/rain. About 1/10 of an inch of ice thickness on the ground/branches.
12/28/2019 8:00 AM 0.28 0.0 0.00 M M +1.0 C and clear.
12/29/2019 8:00 AM 0.00 0.0 0.00 M M -2.0 C and partly cloudy
12/30/2019 8:00 AM 0.00 0.0 0.00 0.0 0.00 -4.0 C, cloudy and windy. Precipitation to begin within the half hour according to the radar. No snow on the ground.
12/31/2019 8:00 AM 1.10 7.5 0.74 M M -2.5 C and light snow at observation time. Yesterday precipitation started as freezing rain and ice pellets for the first four hours. Hence the melted value from the board is significantly less than that collected on the gauge. Moreover the frozen layer stuck to the board could not be sampled.
1/1/2020 8:00 AM 0.34 4.5 0.34 M M -1.0 C and cloudy. Exactly the same amount of equivalent water was measured from both the gauge and the sample over the board.
1/2/2020 8:00 AM 0.00 0.0 0.00 M M -2.0 C and cloudy
1/3/2020 8:00 AM 0.00 0.0 0.00 M M +2.5 C and cloudy.
1/4/2020 8:00 AM 0.00 0.0 0.00 M M -1.5 C and cloudy.
1/5/2020 8:00 AM 0.04 0.5 M M M -4.5 and mostly cloudy.
1/6/2020 8:00 AM T T M 5.0 0.96 -11.0 C and a very light snow falling.
1/7/2020 8:00 AM 0.12 2.4 0.12 M M -11.5 C and clear.
1/8/2020 8:00 AM 0.09 1.4 0.09 M M -4.5 C and a very light fine snow seen falling.
1/9/2020 8:00 AM T T M M M -16.0 C and clear.
1/10/2020 8:00 AM T T M M M -8.5 C, cloudy and a trace of snow in the gauge
1/11/2020 8:00 AM 0.20 0.0 0.00 M M +2.0 C and a very light rain, but a lot more is expected.
1/12/2020 8:00 AM 2.17 M M M M -7.0 C and some ice pellets at observation time. 1.44" of rain fell between 8 AM and 10 PM on the 11th, max temp. of +6.0 C during the day, followed by a combination of freezing rain and ice pellets and with a small amount of snow until observation time at 8 AM, 12th that totaled 0.73" of equivalent water. Amount of snow cannot be determined, because the strong wind left no trace of it on the snowboard, but is judged to be minimal.
1/13/2020 8:00 AM 0.12 1.6 0.07 M M -10.5 C and very light snow falling. Could not sample the total snow/ice on the ground. The 2" rain and of ice pellets of 2 days ago formed an impenetrable thick layer of "ice/crushed ice pellets" just above the ground above which the subsequent ~2" snowfall settled. It will probably remain so until the end of winter rendering proper measurements of "snow on the ground" very difficult and uncertain.
1/14/2020 8:00 AM 0.02 0.3 M M M -7.0 C and cloudy.
1/15/2020 8:00 AM 0.08 0.8 0.08 M M -4.5 C and cloudy.
1/16/2020 8:00 AM 0.13 1.7 0.13 M M -2.5 C and a very fine snow falling.
1/17/2020 8:00 AM 0.07 0.9 0.07 8.0 1.98 -19.0 C and clear. The observation of the new and old snow/ice amount over the ground was taken yesterday evening at about 9 PM but does not include the impenetrable layer of ice just above the ground.
1/18/2020 8:00 AM 0.00 0.0 0.00 M M -16.5 C and clear.
1/19/2020 8:00 AM 0.46 4.3 0.37 M M -11.5 C and thin high cloud. The depth of snow over the snowboard seems to me to be at least one inch less than expected (and hence the water equivalent).
1/20/2020 8:00 AM 0.01 0.5 M M M -17.0 C and clear. Yesterday's precip. was in the form of very fluffy, cotton-like snow from a few scattered flurries which amounted to an approximate depth of about 0.5" but which resulted into a minimal amount, 0.01", of precipitable water.
1/21/2020 8:00 AM 0.00 0.0 0.00 M M -18.5 and mostly clear.
1/22/2020 8:00 AM 0.00 0.0 0.00 7.0 2.15 -5.5 C and clear at 8 AM. The measurement above ground has been taken at 4 PM but it is highly uncertain due to the thick layer(s) of ice and of compacted now pellets. Depth values can vary between 5.5 and 8 inches and water equivalence between 1.77 and 2.56 inches.
1/23/2020 8:00 AM 0.00 0.0 0.00 M M -3.5 C and partly cloudy.
1/24/2020 8:00 AM 0.00 0.0 0.00 M M -2.0 C and cloudy.
1/25/2020 8:00 AM 0.00 0.0 0.00 M M -5.0 C and mostly cloudy.
1/26/2020 8:00 AM 0.78 4.3 0.76 M M +0.5 C and cloudy.
1/27/2020 8:00 AM 0.20 0.5 M M M 0.0 C, cloudy and a few snowflakes falling.
1/28/2020 8:00 AM 0.04 0.3 M M M -1.0 C and cloudy. The amount 0f 0.04" is the result of periods of some drizzle and of some snowflurries.
1/29/2020 8:00 AM 0.00 0.0 0.00 M M -12.0 C and sunny.
1/30/2020 8:00 AM 0.00 0.0 0.00 M M -13.0 C and sunny.
1/31/2020 8:00 AM 0.00 0.0 0.00 M M -12.5 C and sunny.
2/5/2020 8:00 AM 0.00 0.0 0.00 M M -8.0 C and sunny.
2/6/2020 8:00 AM 0.02 0.6 0.02 M M -8.0 C and very light snow.
2/7/2020 8:00 AM 0.68 4.0 0.56 M M -6.0 C and light snow. The depth of new snow varied between 3 and 4.5 inches.
2/8/2020 8:00 AM 0.61 3.0 0.30 M M -15.5 C and sunny. The depth and water equivalence of the snow on top of the snowboard is considerably less than that collected by the gauge. Is that solely because of the wind drift where the board was located?
2/9/2020 8:00 AM 0.00 0.0 0.00 16.0 2.88 -21.0 C and sunny. The measurements of total snow on the ground were taken at 11:30 AM. Total snow depth varies between 12 and 18 inches. Not sure if I managed to properly sample the bottom layer of ice and of ice pellets that fell earlier in the winter and which is rendering such measurements difficult and uncertain.
2/10/2020 8:00 AM 0.29 5.5 0.30 M M -8.5 C and light snow. Unlike the situation with the snowstorm a few days ago under very windy conditions, the water equivalent result from both the gauge and the snowboard are nearly identical, and the snow depth measurement over the board is sensible. The latter was obviously severely underestimated on both days of the snowstorm last week.
2/11/2020 8:00 AM 0.07 0.9 0.80 M M -6.5 C and cloudy. Snow that fell yesterday morning, the tail end of the previous day snowfall event.
2/12/2020 8:00 AM 0.00 0.0 0.00 M M -3.0 and sunny.
2/13/2020 8:00 AM 0.02 0.7 M M M -2.0 C and some very light snow.
2/14/2020 8:00 AM 0.11 1.6 0.11 M M -19.5 C and sunny.
2/15/2020 8:00 AM T T M M M -14.0 C and very light snow crystals falling from a hazy but mostly clear sky.
2/16/2020 8:00 AM 0.01 0.4 0.02 M M -1.5 C and cloudy.
2/17/2020 8:00 AM 0.00 0.0 0.00 M M -9.5 C and sunny.
2/18/2020 8:00 AM 0.00 0.0 0.00 M M -13.5 C and cloudy. Snow to begin shortly according to the radar.
2/19/2020 8:00 AM 0.30 3.0 0.26 M M -2.5 C and moderate snow.
2/20/2020 8:00 AM T T M 19.0 4.37 -15.0 C and clear. The moderate snowfall reported at observation time yesterday was very brief, yielding only a trace amount of total accumulation. The snow measurement on the ground were made yesterday at 5 PM. The water equivalence of 4.37" seems high compared to the previous measurement of 11 days ago.
2/21/2020 8:00 AM 0.00 0.0 0.00 20.5 5.67 -14.0 C and mostly clear. Yesterday afternoon I took another sample of the snow on the ground, in an area where the total snow depth was 20.5 inches, and resulting into a water equivalence of 5.67 inches, the latter amount being higher than the result obtained a day earlier, even though I had then indicated that the amount of 4.37" seemed higher than expected. The bottom layers of ice and of crushed snow pellets render such measurements highly uncertain this year.
2/22/2020 8:00 AM T 0.0 0.00 M M -3.0 C and hazy sky. A few very light now crystals were seen falling out of the hazy sky conditions yesterday morning soon after observation time, hence the report of "T".
2/23/2020 8:00 AM 0.00 0.0 0.00 M M -3.5 C and sunny.
2/24/2020 8:00 AM 0.00 0.0 0.00 17.0 5.38 +2.5 C and sunny. Measurements of snow on the ground have been made at 4 PM, but they were highly variable depending on location.
2/25/2020 8:00 AM 0.00 0.0 0.00 M M +1.0 C and light overcast.
2/26/2020 8:00 AM 0.00 0.0 0.00 M M -2.5 C and cloudy
2/27/2020 8:00 AM 0.36 1.3 0.33 M M 0.0 C and moderate wet snow.
2/28/2020 8:00 AM 0.77 3.6 0.69 M M -10.5 C and cloudy, but sun coming through the clouds.
2/29/2020 8:00 AM T T T M M -12.0 C and mostly clear.
3/1/2020 8:00 AM 0.00 0.0 0.00 M M -12.5 C and sunny.
3/2/2020 8:00 AM 0.00 0.0 0.00 M M -3.0 C and overcast.
3/3/2020 8:00 AM 0.41 0.0 0.00 M M +0.5 C and overcast. Precipitation in the last 24 hours fell either as rain or freezing rain that subsequently mostly melted leaving no accumulation on the snow board.
3/4/2020 8:00 AM 0.42 0.0 0.00 17.5 6.47 +1.5 C and mostly cloudy. The snow measurements on the ground were taken at 5 PM, the average of two measurements at two different locations is reported (17" and 18" in depth, 6.97" and 5.97" in water content).
3/5/2020 8:00 AM T T T M M 0.0 C and sunny. A few snowflakes were seen floating around yesterday. Hence the "T".
3/6/2020 8:00 AM 0.01 0.3 M M M -1.0 C and very light snow falling.
3/7/2020 8:00 AM 0.03 0.0 0.00 M M -7.5 C and sunny. Yesterday's precipitation was in the form of wet snow in the morning that then melted.
3/8/2020 8:45 AM 0.00 0.0 0.00 17.0 6.15 -1.5 C and clear. Measurements of snow taken at 5 PM, and again quite variable depending on exposure to the sun. The reported values are the averages of two measurements.
3/20/2020 8:00 AM 0.21 0.0 0.00 M M +3.5 C and light to moderate rain.
3/21/2020 8:00 AM 0.48 0.0 0.00 M M -8.0 C and clear
3/22/2020 8:00 AM 0.00 0.0 0.00 M M -8.5 C and clear
3/23/2020 8:00 AM 0.00 0.0 0.00 M M -7.5 C and cloudy. Snow on the ground is difficult to assess. There is no snow on the sunny areas of my house, but still quite a lot, more than 5 inches, in the totally shaded areas. I prefer not to provide an official measurement because of this high variability, but satellite images over my location essentially reveal no snow cover.
3/24/2020 8:00 AM 0.27 4.0 0.25 M M -0.5 C and cloudy.
3/25/2020 8:00 AM 0.00 0.0 0.00 M M -1.5 C and hazy sun through thin high clouds
3/26/2020 8:00 AM T 0.0 0.00 M M +3.0 C and cloudy
3/27/2020 8:00 AM 0.07 0.0 0.00 M M +1.0 C and sunny
3/28/2020 8:00 AM 0.00 0.0 0.00 M M -2.0 C and sunny.
3/29/2020 8:00 AM 0.00 0.0 0.00 M M +3.0 C and cloudy. Expecting major rainfall event.
3/30/2020 8:00 AM 1.82 0.0 0.00 M M +5.0 C and cloudy. 1.75" on the wedge gauge.
3/31/2020 8:00 AM 0.33 0.0 0.00 M M +1.0 C and partly cloudy
4/1/2020 8:00 AM 0.00 0.0 0.00 M M 0.0 C and partly clear.
4/2/2020 8:00 AM 0.00 0.0 0.00 M M +2.0 C and hazy sun
4/3/2020 8:00 AM 0.95 0.0 0.00 M M +5 C and light rain.
4/4/2020 8:00 AM 0.13 0.0 0.00 M M +3.5 C and mostly cloudy towards the south, clearing in the north.
4/5/2020 8:00 AM 0.00 0.0 0.00 M M +7.5 C and cloudy.
4/6/2020 8:00 AM 0.01 0.0 0.00 M M +1.5 C and sunny with a light frost on the ground.
4/7/2020 8:00 AM 0.00 0.0 0.00 M M +1.5 C and sunny.
4/8/2020 8:00 AM 0.00 0.0 0.00 M M +1.0 C and hazy sun.
4/9/2020 8:00 AM 0.00 0.0 0.00 M M +3.0 C and overcast.
4/10/2020 8:00 AM 0.48 0.0 0.00 M M +0.5 C, light rain mixed with some wet snowflakes. Yesterday's accumulation of snow of less than 1 cm has melted overnight.
4/11/2020 8:00 AM 0.05 0.0 0.00 M M +1.0 and overcast
4/12/2020 8:00 AM 0.00 0.0 0.00 M M +2.0 C and mostly sunny.
4/13/2020 8:00 AM 0.26 0.0 0.00 M M +9.0 C and overcast
4/14/2020 8:00 AM 1.08 0.0 0.00 M M +3.0 C and sunny.
4/15/2020 8:00 AM 0.00 0.0 0.00 M M +0.5 C and sunny.
4/16/2020 8:00 AM 0.00 0.0 0.00 M M -1.0 C and sunny.
4/17/2020 8:00 AM T M T 0.0 0.00 +1.0 C and sunny. Some brief snow flurries were observed yesterday.
4/18/2020 8:00 AM 0.00 0.0 0.00 M M +0.5 C and sunny.
4/19/2020 8:00 AM 0.00 0.0 0.00 M M +5.5 C and sunny.
4/20/2020 8:00 AM 0.09 0.0 0.00 M M -2.5 C and sunny.
4/21/2020 8:00 AM 0.00 0.0 0.00 M M =1.5 C and mostly sunny with some high cirrus.
4/22/2020 8:00 AM 0.11 T M M M -5.5 C and high light overcast.
4/23/2020 8:00 AM 0.00 0.0 0.00 M M -2.5 C and sunny.
4/24/2020 8:00 AM 0.00 0.0 0.00 M M +0.5 C and sunny.
4/25/2020 8:00 AM 0.00 0.0 0.00 M M +5.0 C and sunny
4/26/2020 8:00 AM 0.00 0.0 0.00 M M +5.5 C and mostly high cirrus clouds. Partly clear in the north.
4/27/2020 8:00 AM 0.00 0.0 0.00 M M +5.5 C and cloudy.
4/28/2020 8:00 AM 0.00 0.0 0.00 M M +6.0 C and some high cirrus.
4/29/2020 8:00 AM 0.00 0.0 0.00 M M +5.5 C and high cirrus cover
4/30/2020 8:00 AM 0.05 0.0 0.00 M M +10 C and very light rain.
5/1/2020 8:00 AM 0.39 M M M M +12.5 C, overcast with a very fine mist.
5/2/2020 8:00 AM 0.01 M M M M 8.0 C and sunny
5/3/2020 8:00 AM 0.05 M M M M +12.5 C and cloudy
5/4/2020 8:00 AM 0.19 M M M M +8.5 C and cloudy
5/5/2020 8:00 AM 0.00 0.0 M M M +3.5 C and cloudy
5/6/2020 8:00 AM 0.00 0.0 M M M +7.0 C and sunny.
5/7/2020 8:00 AM 0.00 0.0 M M M +7.5 C and mostly sunny
5/8/2020 8:00 AM 0.01 0.0 0.00 M M +2.5 C and cloudy
5/9/2020 8:00 AM T M T M M +1.0 C and mainly sunny. A few periods of snowflurries were experienced yesterday morning but the snow melted on contact with the ground.
5/10/2020 8:00 AM T M M M M +3.5 C and mostly sunny. A few snowflakes were seen yesterday.
5/11/2020 8:00 AM 0.00 0.0 M M M +4.0 C and partly cloudy
5/12/2020 8:00 AM 0.00 0.0 M M M +1.0 C and sunny
5/13/2020 8:00 AM 0.00 0.0 M M M +4.5 C and sunny
5/14/2020 8:00 AM 0.00 0.0 M M M +7.5 C and sunny.
5/15/2020 8:00 AM 0.01 M M M M +10.5 C and cloudy
5/16/2020 8:00 AM 0.66 M M M M +12.5 C and sunny
5/17/2020 8:00 AM 0.00 0.0 M M M 13.0 C and hazy sun.
5/18/2020 8:00 AM 0.00 0.0 M M M +10.0 C and sunny.
5/19/2020 8:00 AM 0.00 0.0 M M M 10.0 C and sunny.
5/20/2020 8:00 AM 0.00 0.0 M M M +11.5 C and sunny.
5/21/2020 8:00 AM 0.00 0.0 M M M +17.0 C and sunny.
5/22/2020 8:00 AM 0.00 0.0 M M M +15.5 C and sunny.
5/23/2020 8:00 AM 0.00 0.0 M M M +14.5 and sunny.
5/24/2020 8:00 AM 0.00 0.0 M M M 12.0 C and sunny.
5/25/2020 8:00 AM 0.00 0.0 M M M +18.0 C and partly sunny.
5/26/2020 8:00 AM 0.00 0.0 M M M 20.5 C and sunny.
5/27/2020 8:00 AM 0.00 0.0 M M M +25.0 C and sunny.
5/28/2020 8:00 AM 0.00 0.0 M M M 24.5 C and sunny
5/29/2020 8:00 AM 0.01 M M M M 24 C and partly cloudy. First measurable rain in two weeks.
5/30/2020 8:00 AM 0.03 M M M M 14.5 C and partly cloudy
5/31/2020 8:00 AM 0.28 M M M M 7.5 C and mostly clear.
6/1/2020 8:00 AM 0.01 M M M M 8.5 C and partly cloudy
6/2/2020 8:00 AM 0.02 M M M M 9.5 C and cloudy
6/3/2020 8:00 AM 0.01 M M M M 10.5 C and cloudy
6/4/2020 8:00 AM T 0.0 M M M 16.0 C and mostly sunny.
6/5/2020 8:00 AM 0.00 0.0 M M M 19.0 C and sunny.
6/6/2020 7:00 AM 0.60 M M M M 18.0 C and partly cloudy.
6/7/2020 8:00 AM 0.01 M M M M 15.0 C and low cloudiness
6/8/2020 8:00 AM 0.00 0.0 M M M 14.0 C and sunny.
6/9/2020 8:00 AM T M M M M 16.0 C and cloudy
6/10/2020 6:30 AM 0.00 0.0 M M M 16.5 C and partly cloudy.
6/11/2020 8:00 AM 0.02 M M M M 22.5 C and cloudy
6/12/2020 8:00 AM 0.04 M M M M 18.0 C and cloudy.
6/13/2020 8:00 AM 0.00 0.0 M M M 10.0 C and mostly sunny.
6/14/2020 8:00 AM 0.01 M M M M 12.5 C and sunny.
6/15/2020 8:00 AM 0.00 0.0 M M M 14.0 C and sunny.
6/16/2020 8:00 AM 0.00 0.0 M M M 18.0 C and sunny.
6/17/2020 8:00 AM 0.00 0.0 M M M 18.5 C and sunny.
6/18/2020 8:00 AM 0.00 0.0 M M M 21.5 C and sunny.
6/19/2020 8:00 AM 0.00 0.0 M M M 23.5 C and sunny.
6/20/2020 7:30 AM 0.00 0.0 M M M 23.5 C and sunny.
6/21/2020 8:00 AM 0.00 0.0 M M M 22.0 C and sunny.
6/22/2020 8:00 AM 0.00 0.0 M M M 26.0 C and sunny.
6/23/2020 8:00 AM T M M M M 25.5 C and sunny.
6/24/2020 8:30 AM 1.03 M M M M 19.0 C and cloudy. Finally, it rained.
6/25/2020 8:00 AM 0.00 0.0 M M M 19.0 C and partly cloudy.
6/26/2020 8:00 AM T M M M M 20.0 C and sunny.
6/27/2020 7:00 AM 0.02 M M M M 19.0 C and cloudy with a few drops of rain.
6/28/2020 8:00 AM 0.28 M M M M 20.0 C and low cloud
6/29/2020 8:00 AM 0.94 M M M M 19.0 C and cloudy
6/30/2020 8:00 AM T M M M M 21.0 C and partly cloudy
7/1/2020 8:00 AM 0.01 M M M M 21.0 C and sunny.
7/2/2020 8:00 AM 0.00 0.0 M M M 24.0 C and sunny.
7/3/2020 8:00 AM T M M M M 20.5 C and mostly cloudy
7/4/2020 8:00 AM 0.00 0.0 M M M 19.0 C and sunny.
7/5/2020 8:00 AM 0.00 0.0 M M M 20.5 C and cloudy
7/6/2020 8:00 AM 0.01 M M M M 18.5 C and sunny.
7/7/2020 8:00 AM 0.00 0.0 M M M 21.0 C and partly cloudy
7/8/2020 8:00 AM 0.12 M M M M 23.5 C and mostly clear.
7/9/2020 8:00 AM 0.00 0.0 M M M 25.0 C and sunny.
7/10/2020 8:00 AM 0.00 0.0 M M M 27.5 C and sunny. The highest temperature recorded at 8 AM at my location.
7/11/2020 8:00 AM 0.03 M M M M 26.0 C and mostly sunny.
7/12/2020 8:00 AM 0.46 M M M M 24.5 C and partly cloudy
7/13/2020 8:00 AM 0.01 M M M M 20.0 C and partly cloudy
7/14/2020 8:00 AM 0.00 0.0 M M M 20.5 C and mostly cloudy
7/15/2020 8:00 AM 0.00 0.0 M M M 17.5 C and sunny.
7/16/2020 8:00 AM 0.00 0.0 M M M 22.5 C and partly cloudy
7/17/2020 8:00 AM 0.61 M M M M 17.5 C and cloudy with a light drizzle
7/18/2020 8:00 AM 0.05 M M M M 21.0 C and sunny.
7/19/2020 8:00 AM 0.15 M M M M 22.0 C and light rain.
7/20/2020 8:00 AM 0.32 M M M M 24.0 C and sunny
7/21/2020 8:00 AM 0.00 0.0 M M M 20.5 C and mostly cloudy
7/22/2020 8:00 AM 0.00 0.0 M M M 19.5 C and cloudy
7/23/2020 8:00 AM 0.01 M M M M 19.0 C and mostly cloudy
7/24/2020 8:00 AM 0.00 0.0 M M M 19.5 C and sunny.
7/25/2020 8:00 AM 0.00 0.0 M M M 19.5 C and partly cloudy
7/26/2020 8:00 AM 0.00 0.0 M M M 24.0 C and cloudy
7/27/2020 8:00 AM 0.51 M M M M 24.0 C and cloudy
7/28/2020 8:00 AM 0.24 M M M M 24.5 C and becoming sunny.
7/29/2020 8:00 AM 0.00 0.0 M M M 22.0 C and mostly cloudy
7/30/2020 8:00 AM 0.11 M M M M 20.0 C and sunny
7/31/2020 8:00 AM 0.02 M M M M 19.5 C and sunny
8/1/2020 8:00 AM 0.04 M M M M 18.0 C and sunny.
8/2/2020 8:00 AM 0.00 0.0 M M M 24.5 C and mostly cloudy.
8/3/2020 8:00 AM 1.50 M M M M 22.0 C and cloudy
8/4/2020 8:00 AM 0.10 M M M M 18.5 C and light rain
8/5/2020 8:00 AM 1.52 M M M M 19.0 C and cloudy
8/6/2020 8:00 AM 0.14 M M M M 17.0 C and sunny.
8/7/2020 8:00 AM 0.00 0.0 M M M 18.0 C and sunny.
8/8/2020 7:00 AM 0.00 0.0 M M M 17.5 and sunny
8/9/2020 8:00 AM 0.00 0.0 M M M 22.0 C and cloudy
8/10/2020 8:00 AM 0.04 M M M M 22.5 C and cloudy
8/11/2020 8:00 AM 0.00 0.0 M M M 24.0 C and sunny
8/12/2020 8:00 AM 0.45 M M M M 22.0 C and mostly clear.
8/13/2020 8:00 AM 0.00 0.0 M M M 22.0 C and sunny.
8/14/2020 8:00 AM 0.00 0.0 M M M 20.0 C and sunny
8/15/2020 8:00 AM 0.00 0.0 M M M 18.0 C and sunny.
8/16/2020 8:00 AM 0.00 0.0 M M M 20.0 C and sunny.
8/17/2020 8:00 AM 0.01 M M M M 20.5 C and cloudy
8/18/2020 8:00 AM 0.13 M M M M 18.0 C and sunny.
8/19/2020 8:00 AM 0.14 M M M M 14.5 C and partly cloudy.
8/20/2020 8:00 AM 0.00 0.0 M M M 12.5 C and sunny.
8/21/2020 8:00 AM 0.39 M M M M 18.0 C and cloudy
8/22/2020 8:00 AM 0.05 M M M M 17.0 C and sunny.
8/23/2020 8:00 AM 0.54 M M M M 19.0 C and cloudy
8/24/2020 8:00 AM 0.94 M M M M 19.0 C and some light rain.
8/25/2020 8:00 AM 0.02 M M M M 22.0 C and sunny.
8/26/2020 8:00 AM 0.00 0.0 M M M 11.0 C and sunny.
8/27/2020 8:00 AM 0.00 0.0 M M M 13.0 C and hazy sun through cirrus clouds.
8/28/2020 8:00 AM T M M M M 14.0 C and mostly cloudy
8/29/2020 8:00 AM 0.13 M M M M 15.0 C and light rain.
8/30/2020 8:00 AM 2.02 M M M M 14.0 C and partly cloudy
8/31/2020 8:00 AM 0.00 0.0 M M M 12.5 C and sunny
9/1/2020 8:00 AM 0.00 0.0 M M M 17.0 C and cloudy
9/2/2020 8:00 AM 0.02 M M M M 19.5 C and cloudy
9/3/2020 8:00 AM 0.23 M M M M 16.5 C and sunny
9/4/2020 8:00 AM 0.01 M M M M Clear
9/5/2020 8:00 AM T M M M M 12.5 C and sunny
9/6/2020 8:00 AM 0.00 0.0 M M M 12.5 C and sunny.
9/7/2020 8:00 AM 0.00 0.0 M M M 17.5 C and cloudy
9/8/2020 8:00 AM 0.14 M M M M 15.5 C and mostly clear
9/9/2020 8:00 AM 0.11 M M M M 12.5 C and cloudy
9/10/2020 8:00 AM T M M M M 12.5 C and cloudy
9/11/2020 8:00 AM T M M M M 10.0 C and mostly cloudy
9/12/2020 8:00 AM 0.00 0.0 M M M 8.5 C and sunny
9/13/2020 7:00 AM 0.00 0.0 M M M 15.5 C and cloudy
9/14/2020 8:00 AM 0.74 M M M M 10.5 C and sunny.
9/15/2020 8:00 AM 0.00 0.0 M M M 6.0 C
9/16/2020 8:00 AM T M M M M 13.0 C and sunny.
9/17/2020 8:00 AM 0.00 0.0 M M M 14.0 C and clearing
9/18/2020 8:00 AM 0.00 0.0 M M M 6.0 C and sunny
9/19/2020 8:00 AM 0.00 0.0 M M M +3.5 C and sunny
9/20/2020 8:00 AM 0.00 0.0 M M M +4.5 C and sunny
9/21/2020 8:30 AM 0.00 0.0 M M M +6.0 C and sunny
9/22/2020 8:00 AM 0.00 0.0 M M M +5.0 C and sunny
9/23/2020 8:00 AM 0.00 0.0 M M M 13.5 C and partly cloudy
9/24/2020 8:00 AM 0.00 0.0 M M M 12.0 C and mostly clear.
9/25/2020 8:00 AM 0.04 M M M M 8.5 C and sunny.
9/26/2020 8:00 AM T M M M M 10.0 C and sunny
9/27/2020 7:45 AM 0.00 0.0 M M M 17.5 C and partly cloudy
9/28/2020 8:00 AM 0.00 0.0 M M M 18.0 C and partly cloudy
9/29/2020 8:00 AM T M M M M 20.5 C and partly cloudy
9/30/2020 8:00 AM 1.11 M M M M 12.0 C and light rain



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/20/2019 10/03/2019 8:00 AM 14 2.25 M M Back home after a 2-week vacation.
10/5/2019 10/07/2019 8:00 AM 3 0.27 M M light rain and 12.0 C at time of observation
11/23/2019 11/26/2019 8:00 AM 4 T T M +2.5 C and partly cloudy at observation time.
2/3/2020 2/04/2020 8:00 AM 2 0.04 M M
3/9/2020 3/19/2020 8:00 AM 11 1.17 11.0 4.65 Back to Montreal since March 9th. No snow on top of snowboard. 1.17" of liquid precip. in the collecting tube. Snow on ground is highly variable. The reported value is the average of 3 measurements in mainly generally shaded locations. Much less snow remains in sunny locations in front of my home.



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground