Station Overview Station Location
Station Number NH-GR-14 Latitude 43.8898111
Station Name Thornton 3.0 ESE Longitude -71.6150098
County Grafton Elevation (ft) 932



Month 30 Yr Avg by PRISM 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 09 4.79 5.41 36 5.41 31 0.00 5 1 14 3 0.3 1 0
Nov 09 4.42 3.74 30 3.74 30 0.00 0 0 11 2 0.0 0 0
Dec 09 3.77 3.83 31 3.35 27 0.48 4 1 12 5 13.7 6 19
Jan 10 3.23 1.99 30 1.66 22 0.33 8 1 9 3 12.2 8 23
Feb 10 3.04 4.45 28 4.45 28 0.00 0 0 10 8 9.5 10 28
March 10 3.54 6.55 30 4.24 24 2.31 6 1 8 2 0.2 1 9
April 10 3.79 3.18 30 3.18 30 0.00 0 0 13 3 3.9 3 3
May 10 4.03 1.69 30 1.69 30 0.00 0 0 12 2 0.0 0 0
June 10 4.34 5.54 30 3.56 25 1.98 5 1 14 1 0.0 0 0
July 10 4.52 5.30 31 5.30 31 0.00 0 0 12 1 0.0 0 0
Aug 10 4.50 2.23 30 2.23 30 0.00 0 0 11 1 0.0 0 0
Sept 10 4.00 2.40 27 2.40 27 0.00 0 0 10 3 0.0 0 0
Water Year Totals: 47.97" 46.31" 363 days 41.21" 335 5.10" 28 days 5 136 days 34 days 39.8" 29 days 82 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
10/1/2009 0.00
10/2/2009 T
10/3/2009 0.24
10/4/2009 0.86
10/5/2009 0.00
10/6/2009 0.05
10/7/2009 0.75
10/8/2009 0.28
10/9/2009 0.00
10/10/2009 0.17
10/11/2009 0.00
10/12/2009 T
10/13/2009 0.20
10/14/2009 0.11
10/15/2009 0.00
10/16/2009 0.00 **
10/17/2009 0.00 **
10/18/2009 0.00 **
10/19/2009 0.00 **
10/20/2009 0.00 0.00
10/21/2009 0.00
10/22/2009 0.19
10/23/2009 0.04
10/24/2009 0.47
10/25/2009 1.85
10/26/2009 0.00
10/27/2009 0.00
10/28/2009 0.00
10/29/2009 0.17
10/30/2009 T
10/31/2009 0.03
11/1/2009 0.40
11/2/2009 0.00
11/3/2009 0.00
11/4/2009 0.01
11/5/2009 0.00
11/6/2009 0.01
11/7/2009 0.00
11/8/2009 0.00
11/9/2009 0.00
11/10/2009 0.00
11/11/2009 0.00
11/12/2009 0.00
11/13/2009 0.00
11/14/2009 T
11/15/2009 0.93
11/16/2009 T
11/17/2009 0.00
11/18/2009 0.00
11/19/2009 0.00
11/20/2009 0.48
11/21/2009 0.59
11/22/2009 0.00
11/23/2009 0.00
11/24/2009 0.00
11/25/2009 0.00
11/26/2009 0.04
11/27/2009 0.01
11/28/2009 1.23
11/29/2009 0.01
11/30/2009 0.03
12/1/2009 0.02
12/2/2009 T
12/3/2009 0.86
12/4/2009 0.08
12/5/2009 0.00
12/6/2009 0.21
12/7/2009 0.00
12/8/2009 0.09
12/9/2009 0.08
12/10/2009 0.56
12/11/2009 **
12/12/2009 **
12/13/2009 **
12/14/2009 0.48
12/15/2009 0.20
12/16/2009 0.02
12/17/2009 T
12/18/2009 0.00
12/19/2009 0.00
12/20/2009 0.00
12/21/2009 0.00
12/22/2009 0.00
12/23/2009 0.00
12/24/2009 T
12/25/2009 0.00
12/26/2009 0.00
12/27/2009 0.62
12/28/2009 0.31
12/29/2009 0.30
12/30/2009 T
12/31/2009 T
Day of YearDaily PrcpMultiday Prcp
1/1/2010 0.09
1/2/2010 0.19
1/3/2010 0.22
1/4/2010 0.02
1/5/2010 0.00
1/6/2010 0.01
1/7/2010 T
1/8/2010 0.00
1/9/2010 0.01
1/10/2010 0.00
1/11/2010 0.00
1/12/2010 T
1/13/2010 **
1/14/2010 **
1/15/2010 **
1/16/2010 **
1/17/2010 **
1/18/2010 **
1/19/2010 **
1/20/2010 0.33
1/21/2010 0.01
1/22/2010 0.00
1/23/2010 0.00
1/24/2010 0.00
1/25/2010 0.21
1/26/2010 0.90
1/27/2010 0.00
1/28/2010 T
1/29/2010 M
1/30/2010 0.00
1/31/2010 0.00
2/1/2010 T
2/2/2010 0.00
2/3/2010 T
2/4/2010 0.01
2/5/2010 0.00
2/6/2010 0.00
2/7/2010 T
2/8/2010 0.00
2/9/2010 0.00
2/10/2010 0.00
2/11/2010 T
2/12/2010 0.00
2/13/2010 0.00
2/14/2010 T
2/15/2010 0.01
2/16/2010 0.00
2/17/2010 0.18
2/18/2010 0.01
2/19/2010 0.02
2/20/2010 T
2/21/2010 T
2/22/2010 T
2/23/2010 0.00
2/24/2010 0.26
2/25/2010 0.34
2/26/2010 3.18
2/27/2010 0.25
2/28/2010 0.19
3/1/2010 0.01
3/2/2010 0.00
3/3/2010 0.00
3/4/2010 0.00
3/5/2010 0.00
3/6/2010 0.00
3/7/2010 0.00
3/8/2010 0.00
3/9/2010 0.00
3/10/2010 0.00
3/11/2010 0.00
3/12/2010 0.03
3/13/2010 0.00
3/14/2010 0.14
3/15/2010 2.31
3/16/2010 0.32
3/17/2010 0.00
3/18/2010 0.00
3/19/2010
3/20/2010 0.00
3/21/2010 T
3/22/2010 T
3/23/2010 0.73
3/24/2010 0.69
3/25/2010 0.01
3/26/2010 **
3/27/2010 **
3/28/2010 **
3/29/2010 **
3/30/2010 **
3/31/2010 2.31
Day of YearDaily PrcpMultiday Prcp
4/1/2010 0.05
4/2/2010 0.00
4/3/2010 0.00
4/4/2010 0.00
4/5/2010 0.00
4/6/2010 0.00
4/7/2010 0.40
4/8/2010 0.09
4/9/2010 0.18
4/10/2010 0.37
4/11/2010 0.01
4/12/2010 T
4/13/2010 0.00
4/14/2010 0.00
4/15/2010 0.00
4/16/2010 0.16
4/17/2010 1.03
4/18/2010 0.17
4/19/2010 0.03
4/20/2010 0.00
4/21/2010 0.00
4/22/2010 T
4/23/2010 T
4/24/2010 0.00
4/25/2010 0.00
4/26/2010 0.00
4/27/2010 0.01
4/28/2010 0.44
4/29/2010 0.24
4/30/2010 0.00
5/1/2010 0.00
5/2/2010 0.14
5/3/2010 0.00
5/4/2010 0.01
5/5/2010 0.04
5/6/2010 0.22
5/7/2010 0.14
5/8/2010 0.29
5/9/2010 0.61
5/10/2010 0.01
5/11/2010 0.00
5/12/2010 0.00
5/13/2010 0.00
5/14/2010 0.07
5/15/2010 T
5/16/2010 0.01
5/17/2010 0.00
5/18/2010 0.00
5/19/2010 0.10
5/20/2010 0.05
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.00
5/24/2010 0.00
5/25/2010
5/26/2010 0.00
5/27/2010 T
5/28/2010 0.00
5/29/2010 0.00
5/30/2010 0.00
5/31/2010 0.00
6/1/2010 0.02
6/2/2010 0.19
6/3/2010 **
6/4/2010 **
6/5/2010 **
6/6/2010 **
6/7/2010 1.98
6/8/2010 0.00
6/9/2010 0.01
6/10/2010 0.28
6/11/2010 0.19
6/12/2010 0.02
6/13/2010 0.06
6/14/2010 0.00
6/15/2010 T
6/16/2010 0.00
6/17/2010 0.34
6/18/2010 0.03
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 0.00
6/22/2010 0.00
6/23/2010 0.63
6/24/2010 0.03
6/25/2010 0.62
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 1.12
6/29/2010 0.02
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.02
7/3/2010 0.00
7/4/2010 0.00
7/5/2010 0.00
7/6/2010 0.00
7/7/2010 0.00
7/8/2010 0.00
7/9/2010 0.00
7/10/2010 0.06
7/11/2010 0.39
7/12/2010 0.18
7/13/2010 0.00
7/14/2010 1.14
7/15/2010 0.00
7/16/2010 0.00
7/17/2010 0.13
7/18/2010 0.00
7/19/2010 0.00
7/20/2010 0.09
7/21/2010 0.06
7/22/2010 1.40
7/23/2010 0.00
7/24/2010 0.03
7/25/2010 1.00
7/26/2010 T
7/27/2010 0.00
7/28/2010 0.00
7/29/2010 0.80
7/30/2010 0.00
7/31/2010 0.00
8/1/2010 0.00
8/2/2010 0.00
8/3/2010 0.04
8/4/2010 0.05
8/5/2010 0.00
8/6/2010 T
8/7/2010 0.00
8/8/2010 0.00
8/9/2010 0.02
8/10/2010 0.38
8/11/2010 0.00
8/12/2010 0.00
8/13/2010 0.00
8/14/2010 0.00
8/15/2010 0.00
8/16/2010 0.37
8/17/2010 0.05
8/18/2010 0.00
8/19/2010 0.00
8/20/2010 0.00
8/21/2010 0.00
8/22/2010 0.00
8/23/2010 0.40
8/24/2010 0.08
8/25/2010 0.01
8/26/2010 0.81
8/27/2010 0.02
8/28/2010
8/29/2010 0.00
8/30/2010 0.00
8/31/2010 0.00
9/1/2010 0.00
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 1.00
9/5/2010 0.00
9/6/2010 T
9/7/2010 T
9/8/2010 0.11
9/9/2010 0.00
9/10/2010 0.02
9/11/2010 0.00
9/12/2010 0.00
9/13/2010 0.05
9/14/2010 0.13
9/15/2010 0.08
9/16/2010 0.01
9/17/2010 0.85
9/18/2010 0.00
9/19/2010 0.00
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 0.00
9/23/2010 0.02
9/24/2010 0.13
9/25/2010 T
9/26/2010 0.00
9/27/2010 0.00
9/28/2010
9/29/2010
9/30/2010



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2009 8:00 AM 0.00 0.0 M M M
10/2/2009 8:00 AM T M M M M
10/3/2009 8:00 AM 0.24 M M M M
10/4/2009 8:00 AM 0.86 M M M M
10/5/2009 8:00 AM 0.00 0.0 M M M
10/6/2009 8:00 AM 0.05 M M M M
10/7/2009 8:00 AM 0.75 M M M M
10/8/2009 8:00 AM 0.28 M M M M
10/9/2009 8:00 AM 0.00 0.0 M M M
10/10/2009 8:00 AM 0.17 M M M M
10/11/2009 8:00 AM 0.00 0.0 M M M
10/12/2009 8:00 AM T M M M M A trace of rain fell yesterday (10/11/09)as sprinkles after yesterday's observation time (~9:45 - 10:00 AM).
10/13/2009 8:00 AM 0.20 M M M M Rain changing to snow at observation time
10/14/2009 8:00 AM 0.11 0.3 0.09 0.0 M Very wet snow fell during the first three (3) hours of this 24-hour observation period and melted from all surfaces by 1PM. Snow depth and water equivalency measurements were taken at 10:30AM
10/15/2009 8:00 AM 0.00 0.0 M M M
10/16/2009 8:00 AM 0.00 0.0 M M M
10/17/2009 8:00 AM 0.00 0.0 M M M
10/18/2009 8:00 AM 0.00 0.0 M M M
10/19/2009 8:00 AM 0.00 0.0 M M M
10/20/2009 8:00 AM 0.00 0.0 M M M
10/21/2009 8:00 AM 0.00 0.0 M M M
10/22/2009 8:00 AM 0.19 M M M M
10/23/2009 8:00 AM 0.04 M M M M
10/24/2009 8:00 AM 0.47 M M M M
10/25/2009 8:00 AM 1.85 M M M M Total precipitation for this storm was 2.32 inches of rain.
10/26/2009 8:00 AM 0.00 0.0 M M M
10/27/2009 8:00 AM 0.00 0.0 M M M
10/28/2009 8:00 AM 0.00 0.0 M M M
10/29/2009 8:00 AM 0.17 M M M M
10/30/2009 8:00 AM T M M M M
10/31/2009 8:00 AM 0.03 M M M M
11/1/2009 8:00 AM 0.40 M M M M
11/2/2009 8:00 AM 0.00 0.0 M M M
11/3/2009 8:00 AM 0.00 0.0 M M M
11/4/2009 8:00 AM 0.01 M M M M
11/5/2009 8:00 AM 0.00 0.0 M M M
11/6/2009 8:00 AM 0.01 M M M M A few snowflakes were mixed with rain during Thursday afternoon. Only a trace of snow was seen on the ground during this interval.
11/7/2009 8:00 AM 0.00 0.0 M M M
11/8/2009 8:00 AM 0.00 0.0 M M M
11/9/2009 8:00 AM 0.00 0.0 M M M
11/10/2009 8:00 AM 0.00 0.0 M M M
11/11/2009 8:00 AM 0.00 0.0 M M M
11/12/2009 8:00 AM 0.00 0.0 M M M
11/13/2009 8:00 AM 0.00 0.0 M M M
11/14/2009 8:00 AM T M M M M
11/15/2009 8:00 AM 0.93 M M M M
11/16/2009 8:00 AM T M M M M
11/17/2009 8:00 AM 0.00 0.0 M M M
11/18/2009 8:00 AM 0.00 0.0 M M M
11/19/2009 8:00 AM 0.00 0.0 M M M
11/20/2009 8:00 AM 0.48 M M M M
11/21/2009 8:00 AM 0.59 M M M M
11/22/2009 8:00 AM 0.00 0.0 M M M
11/23/2009 8:00 AM 0.00 0.0 M M M
11/24/2009 8:00 AM 0.00 0.0 M M M
11/25/2009 8:00 AM 0.00 0.0 M M M
11/26/2009 8:00 AM 0.04 M M M M
11/27/2009 8:00 AM 0.01 M M M M
11/28/2009 8:00 AM 1.23 T M T M Very wet snow began mixing in with rainfall last night at 2000 hours (temp.=35F). By observation time this morning (0800 hrs)no sign of snow was observed. The temperature rose overnight to 38F at obs time. When snow began to mix in with rain, there was an accumulation of 0.98 inches of rain. By obs time this morning, an additional 0.25 inches of rain had fallen.
11/29/2009 8:00 AM 0.01 M M M M
11/30/2009 8:00 AM 0.03 M M M M
12/1/2009 8:00 AM 0.02 0.0 M M M
12/2/2009 8:00 AM T T M M M
12/3/2009 8:00 AM 0.86 M M M M
12/4/2009 8:00 AM 0.08 M M M M
12/5/2009 8:00 AM 0.00 0.0 M M M
12/6/2009 8:00 AM 0.21 2.1 M 2.1 M
12/7/2009 8:00 AM 0.00 0.0 M M M
12/8/2009 8:00 AM 0.09 1.1 0.09 3.0 M Measured new snow depth and liquid equivalent at 10:00 PM after snowfall ended.
12/9/2009 8:00 AM 0.08 1.0 M M M New snowfall began two hours before observation time.
12/10/2009 8:00 AM 0.56 4.5 M M M Heavy snow began falling (~1.0"/hr) around 9:00AM on 12/09/09 and abated around 12:45PM. Principal snowfall came to an end around 1:30PM. Snow measurement taken at 3:00PM showed a new depth of 4.2" and a liquid equivalent of 0.46". Between 3:00PM yesterday and the observation time this morning (8:00AM) an additional 0.3" of mixed precipitation fell that had a liquid equivalency of 0.10". A total of 5.5" of snow fell for the entire 12/9 storm. The additional inch of snow fell during the first two hours of precipitation prior to the 12/9 8:00AM observation.
12/15/2009 8:00 AM 0.20 0.8 M 8.5 M Very wet snow fell overnight with a 4 (snow) to 1 (water) equivalent. Advection fog developed after the snow ended this morning.
12/16/2009 8:00 AM 0.02 M M 7.0 M
12/17/2009 8:00 AM T T M 7.0 M A few snow flurries fell during the past 24 hours.
12/18/2009 8:00 AM 0.00 0.0 M 7.0 M
12/19/2009 8:00 AM 0.00 0.0 M 6.5 M
12/20/2009 8:00 AM 0.00 0.0 M 6.5 M
12/21/2009 8:00 AM 0.00 0.0 M 6.5 M
12/22/2009 8:00 AM 0.00 0.0 M 6.5 M
12/23/2009 8:00 AM 0.00 0.0 M 6.5 M
12/24/2009 8:00 AM T T M 6.5 M
12/25/2009 8:00 AM 0.00 0.0 M 6.5 M
12/26/2009 8:00 AM 0.00 0.0 M 6.5 M
12/27/2009 8:00 AM 0.62 M M 5.0 M
12/28/2009 8:00 AM 0.31 M M 4.0 M
12/29/2009 8:00 AM 0.30 4.2 M 8.0 M The snow to water equivalent ratio was 14:1
12/30/2009 8:00 AM T T M 6.0 M Very strong winds created much drifting in my back yard. Tall trees surriunding my yard created a large gradient of snow depth across the open space. Total snow depth varied between 4" and 8" with an average around 6". It is important to note, however, that the total snow depth yesterday at the end of precipitation was 8.5". This indicates a large amount of scouring as well as drifting took place. There is no way 2.5" of snow melted or sublimated yesterday at temperatures around 12 F.
12/31/2009 8:00 AM T T M 6.0 M
1/1/2010 8:00 AM 0.09 0.9 M 6.0 M The snow to liquid equivalent was 10 to 1 for the most recent snowfall event.
1/2/2010 8:00 AM 0.19 3.9 M 9.7 M Light fluffy snow began falling again last night. The snow to water equivalent ratio was about 20 to 1. Temperature at obs time was 27F.
1/3/2010 8:00 AM 0.22 5.0 M 13.0 M Very strong winds produced much blowing and drifting snow overnight. A large gradient of new snow accumulation across my back yard ranged from 4 to 6", averaging at 5". Similarly, total snow accumulation ranged from 12 to 14.5", averaging at 13". The new snow fall was light and fluffy with a snow to water equivalency of 23 to 1. Temperature at the time of obs was 14F.
1/4/2010 8:00 AM 0.02 0.5 M 12.0 M Continued blowing and drifting of very light snow prevented any accumulation of snow on my snow boards yet some new accumulation had occurred, both in my gauge and in more protected locations. Estimated depth in both gauge and on ground was about 0.5". Packing of snow cover had occurred during the past 24 hours. Depth of total snow cover decreased to 12". Temperature at obs time was 22F.
1/5/2010 8:00 AM 0.00 0.0 M 11.0 M
1/6/2010 8:00 AM 0.01 0.2 M 10.5 M Depth of total snow varies greatly in my back yard from 7.0 to 12". Two out of three snow boards were bare. Still too much wind with blowing, drifting and scouring. Temperature at obs time was 21F. Light blowing snow was falling.
1/7/2010 8:00 AM T T M 10.0 M
1/8/2010 8:00 AM 0.00 0.0 M 10.0 M Temperature at obs time was 16F.
1/9/2010 8:00 AM 0.01 0.1 M 9.5 M Light blowing snow occurred overnight. New snow depth to water equivalent was 10 to 1. This suggests to me that my new snow depth measurement may not be accurate because of blowing and drifting. Only one snowboard had some accumulation while the other boards were nearly free of snow. The ratio should have been closer to 20 to 1. Temperature at obs time was 13F.
1/10/2010 8:00 AM 0.00 0.0 M 9.0 M No new snow fell during the observation period. Temperature at obs time was 10.0F.
1/11/2010 8:00 AM 0.00 0.0 M 9.0 M Temperature at obs time was 21F.
1/12/2010 8:00 AM T T M 8.5 M
1/21/2010 8:00 AM 0.01 0.1 M 10.5 M
1/22/2010 8:00 AM 0.00 0.0 M 10.5 M Heavy frost this morning. Temperature at obs time was 21F.
1/23/2010 8:00 AM 0.00 0.0 M 10.0 M
1/24/2010 8:00 AM 0.00 0.0 M 10.0 M
1/25/2010 8:00 AM 0.21 0.0 M 9.5 M Temperature at time of obs was 36F. Light rain was falling.
1/26/2010 8:00 AM 0.90 0.0 M 4.5 M snow on ground is now packed firn after heavy rain yesterday. Temperature at time of obs was 34F.
1/27/2010 8:00 AM 0.00 0.0 M 4.5 M
1/28/2010 8:00 AM T T M 4.5 M Temperature at obs time was 26F. Skies were overcast.
1/29/2010 8:00 AM M 1.5 M 5.5 M Lost snow in gauge by accidently knocking over the gauge, so I did not get liquid measurement. Because of high wind snow drifted entirely off one snowboard but the new snow depth is based on two other boards. Temperature at obs time was 7F.
1/30/2010 8:00 AM 0.00 0.0 M 5.5 M
1/31/2010 8:00 AM 0.00 0.0 M 5.5 M
2/1/2010 8:00 AM T T M 5.0 M
2/2/2010 8:00 AM 0.00 0.0 M 4.0 M
2/3/2010 8:00 AM T T M 4.0 M
2/4/2010 8:00 AM 0.01 0.2 M 4.0 M
2/5/2010 8:00 AM 0.00 0.0 M 4.0 M Temperature at obs time was 17F.
2/6/2010 8:00 AM 0.00 0.0 M 4.0 M Precipitation so far this winter has been deficit. We are in the middle of the third extended period without snow or rain. Compared to the past two winters, we are well below snow amounts when we had two to three feet of snow on the ground at this time. February brings the most snow amounts, climatologically speaking, so there is still time to make up some of the difference.
2/7/2010 8:00 AM T T M 4.0 M Temperature at obs time was 12F and winds were NW and gusting at times.
2/8/2010 8:00 AM 0.00 0.0 M 4.0 M
2/9/2010 8:00 AM 0.00 0.0 M 4.0 M
2/10/2010 8:00 AM 0.00 0.0 M 3.5 M
2/11/2010 8:00 AM T T M 3.5 M
2/12/2010 8:00 AM 0.00 0.0 M 3.5 M
2/13/2010 8:00 AM 0.00 0.0 M 3.5 M We are approaching three weeks without significant precipitation in central NH -- since 1/25-26/10.
2/14/2010 8:00 AM T T M 3.5 M Three weeks without measurable precipitation in central New Hampshire.
2/15/2010 8:00 AM 0.01 0.1 M 3.5 M
2/16/2010 8:00 AM 0.00 0.0 M 3.5 M We now have had no appreciable precipitation in three weeks and no appreciable snowfall in about one month in central New Hampshire. [We finally expect some snowfall today.]
2/17/2010 8:00 AM 0.18 2.2 M 6.0 M Last evening's snowfall was the first, over an inch in depth, since January 19th. Temperature at obs time was 27F.
2/18/2010 8:00 AM 0.01 0.1 M 6.0 M Snow flurries at time of observation. Temperature was 31F.
2/19/2010 8:00 AM 0.02 0.3 M 6.0 M Snow squall at obs time. Temperature 27F. Between snowmelt yesterday and new snow this morning there was no change in the total snow depth since yesterday.
2/20/2010 8:00 AM T T M 6.0 M
2/21/2010 8:00 AM T T M 4.5 M Occasional snow flurries occurred during the past 24 hours. Temperature at obs time was 27F. Also much melting occurred yesterday afternoon.
2/22/2010 8:00 AM T T M 4.5 M
2/23/2010 8:00 AM 0.00 0.0 M 4.5 M Temperature at obs time was 34F.
2/24/2010 8:00 AM 0.26 2.8 M 7.5 M Heavy wet snow was falling at obs time. Temperature was 32F
2/25/2010 8:00 AM 0.34 0.5 M 5.0 M Very wet snow first accumulated at the beginning of the observation period to a depth of 0.5". The wet snow became "snain" and then rain over the next 6 hours washing the snow boards clean and accumulating as only water in the gauge. The temperature remained between 36F and 39F during the entire period and, with the rain, accounted for a 2.5" loss in total snow cover. The temperature at obs time was 39F with gusty wind conditions.
2/26/2010 8:00 AM 3.18 0.3 M 4.0 M Heavy rain, "snain" and very strong wind occurred all night. Luckily the power did not go out. The small amount of accumulated "snow" occurred during the last 3 hours before obs time, but the temperature was above freezing and most of it melted on contact. It was not precipitating at obs time. No flooding occurred in the immediate area of my home. Temeprature at obs time was 35F.
2/27/2010 8:00 AM 0.25 1.5 M 5.5 M Wet snow fell intermittently during the day yesterday and early this morning before obs time. Temperature at obs time was 34F.
2/28/2010 8:00 AM 0.19 1.5 M 7.0 M Snow squalls occurred on and off during the day and evening yesterday under relatively warm conditions (32-35F). Total snow depth varied quite a bit but the average of ten (10) measurements was 7.0". The snow to liquid equivalency was 8:1.
3/1/2010 8:00 AM 0.01 0.2 M 7.0 M Very light snow began falling shortly before obs time. Temperature at time of obs was 33F.
3/2/2010 8:00 AM 0.00 0.0 M 7.0 M
3/3/2010 8:00 AM 0.00 0.0 M 4.5 M Warm temperatures (near 50F) yesterday finally got the snow melting on the edge of the back yard and over the septic tank. Temperature at obs time was 34F.
3/4/2010 8:00 AM 0.00 0.0 M 4.5 M
3/5/2010 8:00 AM 0.00 0.0 M 4.0 M
3/6/2010 8:00 AM 0.00 0.0 M 3.5 M
3/7/2010 8:00 AM 0.00 0.0 M 3.5 M
3/8/2010 8:00 AM 0.00 0.0 M 2.5 M Snow is disappearing quickly now. Temperature at obs time was 37F
3/9/2010 8:00 AM 0.00 0.0 M 1.0 M Temperature at obs time was 41F. Another breezy day with fire danger increasing.
3/10/2010 8:00 AM 0.00 0.0 M T M
3/11/2010 8:00 AM 0.00 0.0 M T M
3/12/2010 8:00 AM 0.03 M M T M
3/13/2010 8:00 AM 0.00 0.0 M T M
3/14/2010 8:00 AM 0.14 0.0 M T M Windy nor'easter. Temperature at obs time was 39F.
3/15/2010 8:00 AM 2.31 M M M M An occluded nor'easter produced heavy rain and strong wind all night. Temperature at obs time was 39F.
3/16/2010 8:00 AM 0.32 0.0 M 0.0 M
3/17/2010 8:00 AM 0.00 0.0 M 0.0 M
3/18/2010 8:00 AM 0.00 0.0 M 0.0 M
3/20/2010 8:00 AM 0.00 0.0 M 0.0 M
3/21/2010 8:00 AM T T M 0.0 M Brief light snow/graupel shower began at 7:36AM and ended at 7:55AM. Temperature at obs time was 36F.
3/22/2010 8:00 AM T T M 0.0 M A trace snow fell during the first hour of the observation period from 8:10AM to 9:05AM which. The temperature at obs time was 35F.
3/23/2010 8:00 AM 0.73 M M M M
3/24/2010 8:00 AM 0.69 T M 0.0 M Fine shower of graupel/snow began falling just before obs time. Temperature at obs time was 35F.
3/25/2010 8:00 AM 0.01 T M M M Fine graupel/snow fell during the first three (3) hours of the obs period yesterday. Temperature at obs time was 31F.
4/1/2010 8:00 AM 0.05 M M M M The amount this morning brings the total for this recent precipitation event to 2.36 inches.
4/2/2010 8:00 AM 0.00 0.0 M M M
4/3/2010 8:00 AM 0.00 0.0 M M M
4/4/2010 8:00 AM 0.00 0.0 M M M
4/5/2010 8:00 AM 0.00 0.0 M M M
4/6/2010 8:00 AM 0.00 0.0 M M M
4/7/2010 8:00 AM 0.40 M M M M Showers with lightning and thunder last night.
4/8/2010 8:00 AM 0.09 M M M M
4/9/2010 8:00 AM 0.18 M M M M Cloudy and light rain at obs time. Temperature was 46F.
4/10/2010 8:00 AM 0.37 T M 0.0 M Snow flurries were falling at the time of observation. Temperature was 36F at obs time. Some graupel pellets were on the deck floor and railing. and
4/11/2010 8:00 AM 0.01 0.0 M M M Snow showers occurred during the early part of obs period yesterday. Snow melted on contact with the ground.
4/12/2010 8:00 AM T M M M M
4/13/2010 8:00 AM 0.00 0.0 M M M
4/14/2010 8:00 AM 0.00 0.0 M M M Temperature at obs time was 39F with dry conditions.
4/15/2010 8:00 AM 0.00 0.0 M M M Cool with sky skies and a temperature of 48F at obs time.
4/16/2010 8:00 AM 0.16 0.2 M T M Very wet "snain" (mixture of snow and rain)was falling at obs time. Temperature at obs time was 37F. Precipitation probably began as rain given the ratio of snow depth to liquid equivalency [0.2/0.16 = 1.25]
4/17/2010 8:00 AM 1.03 2.4 M 2.6 M Precipitation during the past 24-hour obs period consisted mostly of sleet giving a 2.3 to 1 frozen precip to liquid water equivalency. At 2:50PM yesterday afternoon there was 1.2" of sleet/snow on the ground. Temperature at obs time was 35F and skies were overcast.
4/18/2010 8:00 AM 0.17 T M 1.0 M Yesterday we continued to have a mixture of snow, ice pellets and rain with minimal accumulation. Temperatures ranged from 35 to 42F. Temperature at obs time was 40F with partly cloudy skies. Snow on ground began to recede quickly.
4/19/2010 8:00 AM 0.03 0.0 M T M
4/20/2010 8:00 AM 0.00 0.0 M M M
4/21/2010 8:00 AM 0.00 0.0 M M M
4/22/2010 8:00 AM T M M M M
4/23/2010 8:00 AM T M M M M A trace of rain fell late yesterday afternoon.
4/24/2010 8:00 AM 0.00 0.0 M M M
4/25/2010 8:00 AM 0.00 0.0 M M M
4/26/2010 8:00 AM 0.00 0.0 M M M
4/27/2010 8:00 AM 0.01 M M M M
4/28/2010 8:00 AM 0.44 1.3 M 1.5 M Rain changed to snow at 5:30 PM yesterday afternoon. Up to that time 0.19" of rain fell. Another 0.25" in melted snow fell overnight until obs time. The ratio of snow to liquid equivalency was about 5 to 1 which is consistent with the very wet snow that fell during the night. It was cloudy and snowing at obs time; the temperature was 34 F with hardly a breeze.
4/29/2010 8:00 AM 0.24 T M 0.0 M A trace of snow fell yesterday but all snow had melted by obs time this morning. Temperature at obs time was 35 F under partly cloudy skies.
4/30/2010 8:00 AM 0.00 0.0 M M M
5/1/2010 8:00 AM 0.00 0.0 M M M
5/2/2010 8:00 AM 0.14 M M M M At obs time the sky was overcast under calm conditions; the temperature was 59 F.
5/3/2010 8:00 AM 0.00 0.0 M M M The sky was overcast at obs time under calm and humid conditions. The temperature was 67 F -- a very warm morning for May 3rd!
5/4/2010 8:00 AM 0.01 M M M M
5/5/2010 8:00 AM 0.04 M M M M
5/6/2010 8:00 AM 0.22 M M M M The sky was overcast with light to moderate rain at obs time. The wind was calm and the temperature was 55F.
5/7/2010 8:00 AM 0.14 M M M M
5/8/2010 8:00 AM 0.29 M M M M Sky was overcast and wind was calm at obs time. Temperature was 45F. No precipitation was falling.
5/9/2010 8:00 AM 0.61 M M M M Skies were overcast on Mother's Day morning and a light wet snow was falling. Snow was not sticking to the ground. Temperatures dropped 10F overnight to 37F. It was breezy.
5/10/2010 8:00 AM 0.01 T M T M Some graupel on the ground this AM. Still breezy this AM with mostly cloudy skies. Temperature is 36F.
5/11/2010 8:00 AM 0.00 0.0 M M M
5/12/2010 8:00 AM 0.00 0.0 M M M
5/13/2010 8:00 AM 0.00 0.0 M M M
5/14/2010 8:00 AM 0.07 M M M M
5/15/2010 8:00 AM T M M M M Trace of precipitation fell briefly during the hour before obs time.
5/16/2010 8:00 AM 0.01 M M M M
5/17/2010 8:00 AM 0.00 0.0 M M M
5/18/2010 8:00 AM 0.00 0.0 M M M
5/19/2010 8:00 AM 0.10 M M M M
5/20/2010 8:00 AM 0.05 M M M M
5/21/2010 8:00 AM 0.00 0.0 M M M
5/22/2010 8:00 AM 0.00 0.0 M M M
5/23/2010 8:00 AM 0.00 0.0 M M M Another mostly sunny morning. Winds calm and temperature at 58F
5/24/2010 8:00 AM 0.00 0.0 M M M
5/26/2010 8:00 AM 0.00 0.0 M M M
5/27/2010 8:00 AM T M M M M
5/28/2010 8:00 AM 0.00 0.0 M M M
5/29/2010 8:00 AM 0.00 0.0 M M M
5/30/2010 8:00 AM 0.00 0.0 M M M
5/31/2010 8:00 AM 0.00 0.0 M M M
6/1/2010 8:00 AM 0.02 M M M M
6/2/2010 8:00 AM 0.19 M M M M
6/8/2010 8:00 AM 0.00 0.0 M M M
6/9/2010 8:00 AM 0.01 M M M M
6/10/2010 8:00 AM 0.28 M M M M Cloudy this AM with light drizzle at obs time. Wind calm and temperature at 53F.
6/11/2010 8:00 AM 0.19 M M M M
6/12/2010 8:00 AM 0.02 M M M M At 8AM a light rain is falling under cloudy skies; wind is calm with a temperature of 55F.
6/13/2010 8:00 AM 0.06 M M M M
6/14/2010 8:00 AM 0.00 0.0 M M M Cloudy, wind is calm and temperature is 61F -- a rather warm start to the day.
6/15/2010 8:00 AM T M M M M Clear, sunny, breezy with a temperature of 55F. A trace of rain fell late in morning yesterday.
6/16/2010 8:00 AM 0.00 0.0 M M M
6/17/2010 8:00 AM 0.34 M M M M Low overcast, wind calm and temperature of 57F this morning. Heaviest rain fell last night around 11 PM.
6/18/2010 8:00 AM 0.03 M M M M Partly sunny, wind calm and a temperature of 59F at obs time.
6/19/2010 8:00 AM 0.00 0.0 M M M
6/20/2010 8:00 AM 0.00 0.0 M M M
6/21/2010 8:00 AM 0.00 0.0 M M M
6/22/2010 8:00 AM 0.00 0.0 M M M Mostly cloudy this morning with calm conditions and a temperature of 58F.
6/23/2010 7:50 AM 0.63 M M M M
6/24/2010 8:00 AM 0.03 M M M M
6/25/2010 8:00 AM 0.62 M M M M Skies clear, light breeze, temperature is 61F at obs time. Some brief heavy downpours yesterday morning and afternoon but no lightning or thunder.
6/26/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, air calm and temperature of 61F.
6/27/2010 6:30 AM 0.00 0.0 M M M Mostly cloudy, calm with a temperature of 61F.
6/28/2010 8:00 AM 1.12 M M M M Low overcast, calm and a temperture of 66F. A very warm muggy morning.
6/29/2010 8:00 AM 0.02 M M M M
6/30/2010 8:00 AM 0.00 0.0 M M M
7/1/2010 8:00 AM 0.00 0.0 M M M
7/2/2010 8:00 AM 0.02 M M M M
7/3/2010 8:00 AM 0.00 0.0 M M M Clear, calm and 58F.
7/4/2010 8:00 AM 0.00 0.0 M M M
7/5/2010 8:00 AM 0.00 0.0 M M M
7/6/2010 8:00 AM 0.00 0.0 M M M
7/7/2010 8:00 AM 0.00 0.0 M M M
7/8/2010 8:00 AM 0.00 0.0 M M M
7/9/2010 8:00 AM 0.00 0.0 M M M
7/10/2010 8:00 AM 0.06 M M M M Finally, a break in the heat. Overcast, calm, light rain and temperature at 72F.
7/11/2010 8:00 AM 0.39 M M M M Clear skies, wind calm and temperature is 64F.
7/12/2010 8:00 AM 0.18 M M M M Clear, calm winds and temperature is 66F.
7/13/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, hazy, calm and a temperature of 69F.
7/14/2010 8:00 AM 1.14 M M M M Low overcast, very humid, wind calm and the temperature is 70F. Heavy rain overnight.
7/15/2010 8:00 AM 0.00 0.0 M M M
7/16/2010 8:00 AM 0.00 0.0 M M M
7/17/2010 8:00 AM 0.13 M M M M
7/18/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, breezy, temperature of 70F. A number of thunderstorms storms traversed by just to our north last night but no precip here.
7/19/2010 8:00 AM 0.00 0.0 M M M
7/20/2010 8:00 AM 0.09 M M M M Mostly cloudy; winds calm and a temperature of 66F.
7/21/2010 8:00 AM 0.06 M M M M Mostly sunny this morning, wind calm and temperature is 64F.
7/22/2010 8:00 AM 1.40 M M M M Overcast, very light breeze, humid and a temperature of 64F. Pea-sized hail fell for about one minute yesterday afternoon at 5:40PM (7/21/10) associated with a strong thunderstorm.
7/23/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind calm and temperature 62F.
7/24/2010 8:00 AM 0.03 M M M M Partly cloudy, winds calm, and temperature is 67F.
7/25/2010 8:00 AM 1.00 M M M M Mostly sunny, breezy and 69F. We may finally dry out a bit today. Much more rain fell than I realized between midnight and 5:00 AM.
7/26/2010 8:00 AM T 0.0 M M M Clear skies, windy, dry and a temperature of 64F. The heat and high dewpoints have ceased for the time being.
7/27/2010 8:00 AM 0.00 0.0 M M M Clear skies, wind calm, and a temperature of 61F.
7/28/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind calm and a temperature of 64F.
7/29/2010 8:00 AM 0.80 M M M M Partly cloudy, humid, very light breeze, temperature of 69F.
7/30/2010 8:00 AM 0.00 0.0 M M M Clear, cool, dry, wind calm and temperature of 56F.
7/31/2010 8:00 AM 0.00 0.0 M M M Clear skies, wind calm and temperature 52F.
8/1/2010 8:00 AM 0.00 0.0 M M M Clear skies, wind calm and temperature 57F.
8/2/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind calm and temperature of 61F.
8/3/2010 8:00 AM 0.04 M M M M Overcast, wind calm and temperature of 66F.
8/4/2010 8:00 AM 0.05 M M M M Overcast, wind - calm, and temperature - 70F.
8/5/2010 8:00 AM 0.00 0.0 M M M Mostly cloudy, wind - calm, temperature - 70F.
8/6/2010 8:00 AM T M M M M Partly cloudy, light breeze and temperature of 66F.
8/7/2010 8:00 AM 0.00 0.0 M M M Clear, wind - calm, temperature - 50F.
8/8/2010 8:00 AM 0.00 0.0 M M M Mostly sunny, wind - calm, temperature - 55F.
8/9/2010 8:00 AM 0.02 M M M M
8/10/2010 8:00 AM 0.38 M M M M Light fog with sun shining through, wind - calm, temperature - 66F.
8/11/2010 8:00 AM 0.00 0.0 M M M Clear skies, wind - calm, temperature - 64F.
8/12/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind - calm, temperature - 60F.
8/13/2010 8:00 AM 0.00 0.0 M M M Clear, wind - calm, temperature - 62F.
8/14/2010 8:00 AM 0.00 0.0 M M M Clear, wind - calm, temperature - 59F.
8/15/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind - calm, temperature - 60F.
8/16/2010 6:45 AM 0.37 M M M M Overcast, light rain, wind - calm, temperature - 65F.
8/17/2010 8:00 AM 0.05 M M M M Light fog with sun shining through, wind - calm, temperature - 63F.
8/18/2010 8:00 AM 0.00 0.0 M M M Overcast, wind - calm, temperature - 60F.
8/19/2010 8:00 AM 0.00 0.0 M M M Clear, wind - calm, temperature - 60F.
8/20/2010 8:00 AM 0.00 0.0 M M M Mostly cloudy, very light breeze, temperature - 63F.
8/21/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind - calm, temperature - 52F.
8/22/2010 8:00 AM 0.00 0.0 M M M Overcast, wind - calm, temperature - 61F.
8/23/2010 8:00 AM 0.40 M M M M Overcast, light rain, wind - calm, temperature - 58F.
8/24/2010 8:00 AM 0.08 M M M M Partly cloudy, wind - calm, temperature - 60F.
8/25/2010 8:00 AM 0.01 M M M M Overcast, light breeze, precip. ended, temperature - 63F.
8/26/2010 8:00 AM 0.81 M M M M Overcast, wind - calm, temperature - 63F.
8/27/2010 8:00 AM 0.02 M M M M Clear, windy, temperature - 60F.
8/29/2010 8:00 AM 0.00 0.0 M M M
8/30/2010 8:00 AM 0.00 0.0 M M M Clear, light breeze, temperature - 65F.
8/31/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind - calm, temperature - 68F.
9/1/2010 8:00 AM 0.00 0.0 M M M Clear, wind - calm, temperature - 68F.
9/2/2010 8:00 AM 0.00 0.0 M M M
9/3/2010 8:00 AM 0.00 0.0 M M M Mostly cloudy, wind -calm, temperature - 69F.
9/4/2010 8:00 AM 1.00 M M M M Partly cloudy, light breeze, temperature - 69F.
9/5/2010 8:00 AM 0.00 0.0 M M M Low overcast, wind - calm, temperature - 57F.
9/6/2010 8:00 AM T M M M M Clear, wind - calm, temperature - 52F.
9/7/2010 8:00 AM T 0.0 M M M Overcast, wind - calm, temperature - 58F.
9/8/2010 8:00 AM 0.11 M M M M Overcast, wind - calm, temperature - 64F.
9/9/2010 8:00 AM 0.00 0.0 M M M Overcast, calm, temperature - 59F.
9/10/2010 8:00 AM 0.02 M M M M Partly cloudy, very windy, temperature - 54F.
9/11/2010 8:00 AM 0.00 0.0 M M M Clear, calm, temperature - 53F.
9/12/2010 8:00 AM 0.00 0.0 M M M Overcast, wind - calm, temperature - 54F.
9/13/2010 8:00 AM 0.05 M M M M Overcast, wind - calm, temperature - 53F.
9/14/2010 8:00 AM 0.13 M M M M Partly cloudy, wind - calm, temperature - 54F.
9/15/2010 8:00 AM 0.08 M M M M Mostly cloudy, wind - calm, temperature - 50F.
9/16/2010 8:00 AM 0.01 M M M M Partly cloudy, wind - calm, temperature - 48F.
9/17/2010 8:00 AM 0.85 M M M M Mostly cloudy, light breeze, temperature - 54F.
9/18/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind - calm, temperature - 54F.
9/19/2010 8:00 AM 0.00 0.0 M M M Mostly cloudy, wind - calm, temperature - 53F.
9/20/2010 8:00 AM 0.00 0.0 M M M Clear, wind - calm, temperature - 48F.
9/21/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind - calm, temperature - 43F.
9/22/2010 8:00 AM 0.00 0.0 M M M Partly cloudy, wind - calm, temperature - 56F.
9/23/2010 8:00 AM 0.02 M M M M Partly cloudy, wind- calm, temperature - 54F.
9/24/2010 8:00 AM 0.13 M M M M Overcast, wind - calm, temperature - 55F.
9/25/2010 8:00 AM T M M M M Mostly sunny, wind - calm, temperature - 65F.
9/26/2010 8:00 AM 0.00 0.0 M M M Cloudy, wind - calm, temperature - 54F.
9/27/2010 8:00 AM 0.00 0.0 M M M Overcast, wind- calm, temperature - 53F. NOTICE: THIS WILL BE THE LAST COCORAHS SUBMISSION THAT I WILL MAKE IN NH -- NOW MOVING TO THE STATE OF WASHINGTON. IT HAS BEEN GREAT! J.Z.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/16/2009 10/20/2009 8:00 AM 5 0.00 0.0 0.00 No precipitation fell during this 5-day period.
12/11/2009 12/14/2009 2:30 PM 4 0.48 8.0 M Most, if not all, of the precipitation fell as snow on Sunday, December 13th. The measurements were taken about 14 hours after the cessation of snowfall on Monday, December 14th. The snowfall measurement at that time averaged 3.4" in depth resulting in a 7 to 1 ratio of snow to water which seems correct given the moisture content of the snow.
1/13/2010 1/20/2010 10:45 AM 8 0.33 10.5 M The average of the total snow depth was highly influenced by melting and compaction of recent snow. The new snow depth measured on my snow boards averaged 3" which produced a 9 to 1 (snow to liquid equivalency).
3/26/2010 3/31/2010 1:15 PM 6 2.31 M M Nearby rivers, such as the Pemigewasset River, were just below flood stage.
6/3/2010 6/07/2010 5:30 PM 5 1.98 M M



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
7/21/2010 5:40 PM Hail pad was not in place NA 1/4" Pea Size NA Soft|Clear Ice 1 1min no damage Continuous True Same time as rain Same time as smaller hail 10-20