Station Overview Station Location
Station Number NJ-MC-3 Latitude 40.329375
Station Name West Windsor Twp 3.0 NNW Longitude -74.648208
County Mercer Elevation (ft) 98



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 17 3.96 5.67 28 5.67 28 0.00 0 0 14 0 0.0 0 0
Nov 17 3.69 2.04 30 2.04 30 0.00 0 0 10 1 0.0 0 0
Dec 17 4.01 1.75 29 1.75 29 0.00 0 0 9 2 5.1 3 6
Jan 18 3.39 2.58 30 2.58 30 0.00 0 0 12 1 7.9 3 12
Feb 18 2.69 6.51 24 5.26 19 1.25 5 2 10 1 4.8 2 2
March 18 4.09 3.65 26 3.65 26 0.00 0 0 10 0 7.5 4 8
April 18 4.13 0.65 10 0.65 10 0.00 0 0 7 0 0.0 0 0
May 18 4.17 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 18 4.26 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 18 5.39 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 18 4.03 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 18 4.34 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 48.15" 22.85" 177 days 21.60" 172 1.25" 5 days 2 72 days 5 days 25.3" 12 days 28 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
10/1/2017 0.01
10/2/2017 0.00
10/3/2017 0.00
10/4/2017 0.00
10/5/2017 0.00
10/6/2017 0.00
10/7/2017 0.00
10/8/2017 0.31
10/9/2017 0.04
10/10/2017 0.69
10/11/2017 0.02
10/12/2017 0.34
10/13/2017 0.00
10/14/2017 0.03
10/15/2017 0.02
10/16/2017 0.03
10/17/2017 0.00
10/18/2017
10/19/2017 0.00
10/20/2017 0.00
10/21/2017
10/22/2017
10/23/2017 0.00
10/24/2017 0.02
10/25/2017 1.04
10/26/2017 0.00
10/27/2017 0.06
10/28/2017 0.00
10/29/2017 0.02
10/30/2017 3.04
10/31/2017 0.00
11/1/2017 0.00
11/2/2017 0.00
11/3/2017 T
11/4/2017 0.00
11/5/2017 0.08
11/6/2017 0.04
11/7/2017 0.00
11/8/2017 0.75
11/9/2017 0.00
11/10/2017 0.03
11/11/2017 0.00
11/12/2017 0.00
11/13/2017 0.17
11/14/2017 0.13
11/15/2017 0.00
11/16/2017 0.12
11/17/2017 0.01
11/18/2017 0.00
11/19/2017 0.58
11/20/2017 0.00
11/21/2017 0.00
11/22/2017 0.13
11/23/2017 0.00
11/24/2017 0.00
11/25/2017 0.00
11/26/2017 0.00
11/27/2017 0.00
11/28/2017 0.00
11/29/2017 0.00
11/30/2017 0.00
12/1/2017 0.02
12/2/2017 0.00
12/3/2017 0.00
12/4/2017 0.00
12/5/2017 0.00
12/6/2017 M
12/7/2017 0.00
12/8/2017 0.00
12/9/2017 T
12/10/2017 0.35
12/11/2017 0.00
12/12/2017 0.00
12/13/2017 0.04
12/14/2017 0.05
12/15/2017 0.00
12/16/2017 0.14
12/17/2017 0.00
12/18/2017 0.00
12/19/2017 0.00
12/20/2017 0.00
12/21/2017 0.00
12/22/2017 0.00
12/23/2017 0.12
12/24/2017 0.71
12/25/2017 0.27
12/26/2017 0.00
12/27/2017
12/28/2017 0.00
12/29/2017 0.00
12/30/2017 T
12/31/2017 0.05
Day of YearDaily PrcpMultiday Prcp
1/1/2018 0.00
1/2/2018 0.00
1/3/2018 0.00
1/4/2018 0.04
1/5/2018 0.41
1/6/2018 0.00
1/7/2018 0.00
1/8/2018 0.00
1/9/2018 0.02
1/10/2018 0.00
1/11/2018 0.00
1/12/2018 0.07
1/13/2018 1.12
1/14/2018 0.00
1/15/2018 0.00
1/16/2018 0.00
1/17/2018 0.10
1/18/2018 0.05
1/19/2018 0.00
1/20/2018 0.00
1/21/2018 0.00
1/22/2018 T
1/23/2018 0.10
1/24/2018 0.28
1/25/2018 0.00
1/26/2018 0.00
1/27/2018 0.00
1/28/2018 0.29
1/29/2018 0.08
1/30/2018 0.02
1/31/2018
2/1/2018 0.00
2/2/2018 0.29
2/3/2018 0.00
2/4/2018 0.00
2/5/2018 1.05
2/6/2018 0.00
2/7/2018 0.02
2/8/2018 1.01
2/9/2018 0.00
2/10/2018
2/11/2018 1.51
2/12/2018
2/13/2018
2/14/2018 0.00
2/15/2018 0.18
2/16/2018 0.68
2/17/2018 0.02
2/18/2018 0.44
2/19/2018 0.00
2/20/2018 0.06
2/21/2018 T
2/22/2018 **
2/23/2018 **
2/24/2018 0.26
2/25/2018 **
2/26/2018 0.99
2/27/2018 0.00
2/28/2018
3/1/2018
3/2/2018 1.52
3/3/2018 0.66
3/4/2018 0.00
3/5/2018
3/6/2018 0.00
3/7/2018 0.31
3/8/2018 M
3/9/2018 0.00
3/10/2018 0.00
3/11/2018 0.00
3/12/2018 0.00
3/13/2018 M
3/14/2018 0.10
3/15/2018 0.00
3/16/2018 0.00
3/17/2018 0.00
3/18/2018 0.00
3/19/2018 0.00
3/20/2018 0.00
3/21/2018 0.09
3/22/2018 0.71
3/23/2018 0.00
3/24/2018 0.00
3/25/2018 0.00
3/26/2018 0.00
3/27/2018
3/28/2018 0.07
3/29/2018 0.10
3/30/2018 0.02
3/31/2018 0.07
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018 0.04
4/3/2018 0.30
4/4/2018 0.08
4/5/2018 0.12
4/6/2018 0.05
4/7/2018 0.02
4/8/2018 0.00
4/9/2018 0.00
4/10/2018 0.04
4/11/2018 0.00
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018
5/3/2018
5/4/2018
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018
5/13/2018
5/14/2018
5/15/2018
5/16/2018
5/17/2018
5/18/2018
5/19/2018
5/20/2018
5/21/2018
5/22/2018
5/23/2018
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018
5/30/2018
5/31/2018
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018
6/17/2018
6/18/2018
6/19/2018
6/20/2018
6/21/2018
6/22/2018
6/23/2018
6/24/2018
6/25/2018
6/26/2018
6/27/2018
6/28/2018
6/29/2018
6/30/2018
Day of YearDaily PrcpMultiday Prcp
7/1/2018
7/2/2018
7/3/2018
7/4/2018
7/5/2018
7/6/2018
7/7/2018
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018
7/14/2018
7/15/2018
7/16/2018
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018
7/24/2018
7/25/2018
7/26/2018
7/27/2018
7/28/2018
7/29/2018
7/30/2018
7/31/2018
8/1/2018
8/2/2018
8/3/2018
8/4/2018
8/5/2018
8/6/2018
8/7/2018
8/8/2018
8/9/2018
8/10/2018
8/11/2018
8/12/2018
8/13/2018
8/14/2018
8/15/2018
8/16/2018
8/17/2018
8/18/2018
8/19/2018
8/20/2018
8/21/2018
8/22/2018
8/23/2018
8/24/2018
8/25/2018
8/26/2018
8/27/2018
8/28/2018
8/29/2018
8/30/2018
8/31/2018
9/1/2018
9/2/2018
9/3/2018
9/4/2018
9/5/2018
9/6/2018
9/7/2018
9/8/2018
9/9/2018
9/10/2018
9/11/2018
9/12/2018
9/13/2018
9/14/2018
9/15/2018
9/16/2018
9/17/2018
9/18/2018
9/19/2018
9/20/2018
9/21/2018
9/22/2018
9/23/2018
9/24/2018
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 8:00 AM 0.01 M M M M
10/2/2017 8:00 AM 0.00 0.0 M M M
10/3/2017 8:00 AM 0.00 0.0 M M M
10/4/2017 8:00 AM 0.00 0.0 M M M
10/5/2017 8:00 AM 0.00 0.0 M M M
10/6/2017 8:00 AM 0.00 0.0 M M M
10/7/2017 8:00 AM 0.00 0.0 M M M
10/8/2017 8:00 AM 0.31 M M M M
10/9/2017 8:00 AM 0.04 M M M M
10/10/2017 8:00 AM 0.69 M M M M
10/11/2017 8:00 AM 0.02 M M M M
10/12/2017 8:00 AM 0.34 M M M M
10/13/2017 8:00 AM 0.00 0.0 M M M
10/14/2017 8:00 AM 0.03 M M M M
10/15/2017 8:00 AM 0.02 M M M M
10/16/2017 8:00 AM 0.03 M M M M
10/17/2017 8:00 AM 0.00 0.0 M M M
10/19/2017 8:00 AM 0.00 0.0 M M M
10/20/2017 8:00 AM 0.00 0.0 M M M
10/23/2017 8:00 AM 0.00 0.0 M M M
10/24/2017 8:00 AM 0.02 M M M M
10/25/2017 8:00 AM 1.04 M M M M After two drt weeks, finally the deluge!
10/26/2017 8:00 AM 0.00 0.0 M M M
10/27/2017 8:00 AM 0.06 M M M M
10/28/2017 8:00 AM 0.00 0.0 M M M
10/29/2017 8:00 AM 0.02 M M M M
10/30/2017 8:00 AM 3.04 M M M M
10/31/2017 8:00 AM 0.00 0.0 M M M
11/1/2017 8:00 AM 0.00 0.0 M M M
11/2/2017 8:00 AM 0.00 0.0 M M M
11/3/2017 8:00 AM T M M M M
11/4/2017 8:00 AM 0.00 0.0 M M M
11/5/2017 8:00 AM 0.08 M M M M
11/6/2017 8:00 AM 0.04 M M M M
11/7/2017 8:00 AM 0.00 0.0 M M M
11/8/2017 8:00 AM 0.75 M M M M
11/9/2017 8:00 AM 0.00 0.0 M M M
11/10/2017 8:00 AM 0.03 M M M M
11/11/2017 8:00 AM 0.00 0.0 M M M
11/12/2017 8:00 AM 0.00 0.0 M M M
11/13/2017 8:00 AM 0.17 M M M M
11/14/2017 8:00 AM 0.13 M M M M
11/15/2017 8:00 AM 0.00 0.0 M M M
11/16/2017 8:00 AM 0.12 M M M M
11/17/2017 8:00 AM 0.01 M M M M A very brief shower at noon
11/18/2017 8:00 AM 0.00 0.0 M M M
11/19/2017 8:00 AM 0.58 M M M M
11/20/2017 8:00 AM 0.00 0.0 M M M
11/21/2017 8:00 AM 0.00 0.0 M M M
11/22/2017 8:00 AM 0.13 M M M M
11/23/2017 8:00 AM 0.00 0.0 M M M
11/24/2017 8:00 AM 0.00 0.0 M M M
11/25/2017 8:00 AM 0.00 0.0 M M M
11/26/2017 8:00 AM 0.00 0.0 M M M
11/27/2017 8:00 AM 0.00 0.0 M M M
11/28/2017 8:00 AM 0.00 0.0 M M M
11/29/2017 8:00 AM 0.00 0.0 M M M
11/30/2017 8:00 AM 0.00 0.0 M M M
12/1/2017 8:00 AM 0.02 M M M M
12/2/2017 8:00 AM 0.00 0.0 M M M
12/3/2017 8:00 AM 0.00 0.0 M M M
12/4/2017 8:00 AM 0.00 0.0 M M M
12/5/2017 8:00 AM 0.00 0.0 M M M
12/6/2017 8:00 AM M 0.0 M M M (MG note: set 0.00" precip to "NA", as widespread rain occurred overnight. OST 12/06/2017 8:12 AM)
12/7/2017 8:00 AM 0.00 0.0 M M M
12/8/2017 8:00 AM 0.00 0.0 M M M
12/9/2017 8:00 AM T M M M M Snow just beginning at 8:00.
12/10/2017 8:00 AM 0.35 M M 3.0 M (MG note: set 3.2" new snow depth to "NA", as measurement was taken morning of 12/10 after compression. OST 12/10/2017 11:42 AM)
12/11/2017 8:00 AM 0.00 0.0 M 1.5 M A few drifts remain, but there are large bare areas.
12/12/2017 8:00 AM 0.00 0.0 M T M
12/13/2017 8:00 AM 0.04 M M M M A brief afternoon shower.
12/14/2017 8:00 AM 0.05 0.7 M 0.5 M Surprise! A light snow overnight.
12/15/2017 8:00 AM 0.00 0.0 M M M
12/16/2017 8:00 AM 0.14 2.6 M 2.5 M
12/17/2017 8:00 AM 0.00 0.0 M 1.0 M
12/18/2017 8:00 AM 0.00 0.0 M M M
12/19/2017 8:00 AM 0.00 0.0 M M M
12/20/2017 8:00 AM 0.00 0.0 M M M
12/21/2017 8:00 AM 0.00 0.0 M M M
12/22/2017 8:00 AM 0.00 0.0 M M M
12/23/2017 8:00 AM 0.12 M M M M
12/24/2017 8:00 AM 0.71 0.0 M M M (MG note: changed 0.00" precip to 0.71", as confirmed by observer. OST 12/24/2017 10:16 AM)
12/25/2017 8:00 AM 0.27 M M M M
12/26/2017 8:00 AM 0.00 0.0 M M M
12/28/2017 8:00 AM 0.00 0.0 M M M
12/29/2017 8:00 AM 0.00 0.0 M M M
12/30/2017 8:00 AM T M M M M Snow just beginning.
12/31/2017 8:00 AM 0.05 1.8 M 2.0 M
1/1/2018 8:00 AM 0.00 0.0 M 1.0 M
1/2/2018 8:00 AM 0.00 0.0 M 0.5 M
1/3/2018 8:00 AM 0.00 0.0 M M M
1/4/2018 8:00 AM 0.04 1.6 M 2.0 M At 8 a.m. snow falling sideways, driven by strong gusty wind.
1/5/2018 8:00 AM 0.41 5.1 M 5.5 M
1/6/2018 8:00 AM 0.00 0.0 M 4.5 M
1/7/2018 8:00 AM 0.00 0.0 M 4.5 M As the temperature never gets above 20, not much melting.
1/8/2018 8:00 AM 0.00 0.0 M 3.5 M
1/9/2018 8:00 AM 0.02 0.0 M 3.5 M
1/10/2018 8:00 AM 0.00 0.0 M 3.5 M
1/11/2018 8:00 AM 0.00 0.0 M 2.5 M
1/12/2018 8:00 AM 0.07 M M M M
1/13/2018 8:00 AM 1.12 M M M M
1/14/2018 8:00 AM 0.00 0.0 M M M
1/15/2018 8:00 AM 0.00 0.0 M M M
1/16/2018 8:00 AM 0.00 0.0 M M M
1/17/2018 8:00 AM 0.10 1.2 M 1.0 M
1/18/2018 8:00 AM 0.05 M M 0.5 M (MG note: Observer revised 0.00" precip to 0.05", as we believe 0.05" precip measured on 1/22 was likely lingering snow from after ob time on 1/17. Possible that some sublimation occurred, but otherwise, looks reasonable for this day. OST 1/18/2018 8:51 AM)
1/19/2018 8:00 AM 0.00 0.0 M T M
1/20/2018 8:00 AM 0.00 0.0 M M M
1/21/2018 8:00 AM 0.00 0.0 M M M
1/22/2018 8:00 AM T M M M M (MG note: changed 0.05" precip to "T", as we believe this precip was from lingering snow on 1/18, so it has been swapped in there. Rain on this day was very likely only a "T" based on rainfall pattern and surrounding reports. OST 1/22/2018 9:11 AM)
1/23/2018 8:00 AM 0.10 M M M M
1/24/2018 8:00 AM 0.28 M M M M
1/25/2018 8:00 AM 0.00 0.0 M M M
1/26/2018 8:00 AM 0.00 0.0 M M M
1/27/2018 8:00 AM 0.00 0.0 M M M
1/28/2018 8:00 AM 0.29 M M M M
1/29/2018 8:00 AM 0.08 M M M M
1/30/2018 8:00 AM 0.02 T M T M
2/1/2018 8:00 AM 0.00 0.0 M M M
2/2/2018 8:00 AM 0.29 M M M M
2/3/2018 8:00 AM 0.00 0.0 M M M
2/4/2018 8:00 AM 0.00 0.0 M M M
2/5/2018 8:00 AM 1.05 M M M M
2/6/2018 8:00 AM 0.00 0.0 M M M
2/7/2018 8:00 AM 0.02 0.3 M 0.5 M Mixture of snow and rain, just beginning.
2/8/2018 8:00 AM 1.01 M M M M
2/9/2018 8:00 AM 0.00 0.0 M M M
2/11/2018 10:00 AM 1.51 M M M M (MG note: changed ob time from default 8:00 AM to estimated 10:00 AM. Report was submitted at 2/11/2018 10:10 AM, and observer agreed report was taken later in morning, which allowed additional rain accum and a relatively high report value for area.)
2/14/2018 8:00 AM 0.00 0.0 M M M
2/15/2018 8:00 AM 0.18 M M M M
2/16/2018 8:30 AM 0.68 M M M M
2/17/2018 8:00 AM 0.02 M M M M
2/18/2018 8:00 AM 0.44 4.5 M 2.0 M Snow began around 5 pm, then turned to rain overnight..
2/19/2018 9:00 AM 0.00 0.0 M T M
2/20/2018 8:00 AM 0.06 M M M M
2/21/2018 9:30 AM T M M M M
2/27/2018 8:00 AM 0.00 0.0 M M M
3/2/2018 8:00 AM 1.52 M M M M
3/3/2018 8:00 AM 0.66 M M M M Yesterday: Rain and snow flying horizontally in powerful wind. No accumulation. Today: sunshine!
3/4/2018 10:00 AM 0.00 0.0 M M M
3/6/2018 9:00 AM 0.00 0.0 M M M
3/7/2018 9:00 AM 0.31 T M T M
3/8/2018 10:30 AM M M M 3.0 M Heavy snow all day yesterday, melting as temperature stayed about 40. I measured about 4 inches before going to bed. Today it's melting rapidly. (MG note: set 0.42" precip and 4.0" new snow depth to "NA", as both values (especially precip) look unrealistically low. OST 3/08/2018 10:41 AM)
3/9/2018 9:30 AM 0.00 0.0 M 1.5 M
3/10/2018 8:00 AM 0.00 0.0 M 0.5 M
3/11/2018 11:00 AM 0.00 0.0 M 0.5 M
3/12/2018 9:00 AM 0.00 0.0 M T M
3/13/2018 8:00 AM M 0.5 M 0.5 M Mixture of rain and snow overnight. Snow continuing. {EDIT: Observer reported 2.05 for new precip. QPE data and surrounding reports of 0.20 to 0.27 indicate this could be a typo. Changed report of 2.05 to NA until observer can be contacted to verify. Submission Time Before EDIT: 3/13/2018 8:31 AM CoCoSTAFF DNT}
3/14/2018 8:00 AM 0.10 0.5 M T M The sun came out at noon and by mid-afternoon all the snow that came down during the morning had melted.
3/15/2018 10:00 AM 0.00 0.0 M M M
3/16/2018 8:00 AM 0.00 0.0 M M M
3/17/2018 8:30 AM 0.00 0.0 M M M
3/18/2018 8:00 AM 0.00 0.0 M M M
3/19/2018 8:00 AM 0.00 0.0 M M M
3/20/2018 8:00 AM 0.00 0.0 M M M
3/21/2018 10:00 AM 0.09 0.5 M 0.5 M Snowing hard at 10:00 a.m.
3/22/2018 9:00 AM 0.71 6.0 M 6.0 M
3/23/2018 9:30 AM 0.00 0.0 M 0.5 M The temperature got up to 47 in the afternoon, and almost all of the snow melted.
3/24/2018 9:00 AM 0.00 0.0 M T M
3/25/2018 8:00 AM 0.00 0.0 M M M
3/26/2018 10:00 AM 0.00 0.0 M M M
3/28/2018 9:30 AM 0.07 M M M M
3/29/2018 8:00 AM 0.10 M M M M
3/30/2018 8:00 AM 0.02 M M M M
3/31/2018 8:00 AM 0.07 M M M M
4/2/2018 8:00 AM 0.04 T M T M Light snow falling-- in April !!!
4/3/2018 9:00 AM 0.30 M M M M The snow melted as fast as it fell, then turned to rain. Rain fell until about 2 pm, when the sun came out.
4/4/2018 8:00 AM 0.08 M M M M
4/5/2018 8:30 AM 0.12 M M M M
4/6/2018 8:00 AM 0.05 M M M M
4/7/2018 8:30 AM 0.02 M M M M
4/8/2018 8:00 AM 0.00 0.0 M M M
4/9/2018 9:00 AM 0.00 0.0 M M M
4/10/2018 9:30 AM 0.04 M M M M
4/11/2018 8:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
2/22/2018 2/24/2018 9:00 AM 3 0.26 0.0 M
2/25/2018 2/26/2018 9:30 AM 2 0.99 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