Station Overview Station Location
Station Number MA-SF-1 Latitude 42.357019
Station Name Boston 0.5 WSW Longitude -71.067142
County Suffolk Elevation (ft) 43



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 19 4.26 4.66 31 2.52 17 2.14 14 4 12 0 0.0 0 0
Nov 19 4.46 2.44 30 1.14 10 1.30 20 5 5 0 0.0 0 0
Dec 19 4.27 5.73 28 3.03 12 2.70 16 6 6 1 0.3 1 5
Jan 20 3.68 2.91 31 0.03 13 2.88 18 6 1 2 0.0 0 3
Feb 20 3.61 4.97 29 2.87 15 2.10 14 4 11 0 0.7 2 1
March 20 4.66 3.38 31 0.29 11 3.09 20 7 3 1 0.0 0 0
April 20 4.31 4.55 30 0.00 1 4.55 29 9 0 0 0.0 0 0
May 20 3.76 2.51 31 0.00 0 2.51 31 6 0 0 0.0 0 0
June 20 4.07 2.18 30 0.00 0 2.18 30 6 0 0 0.0 0 0
July 20 3.81 1.59 31 0.00 0 1.59 31 5 0 0 0.0 0 0
Aug 20 3.68 1.36 30 0.22 1 1.14 29 5 1 0 0.0 0 0
Sept 20 3.70 0.57 30 0.00 0 0.57 30 2 0 0 0.0 0 0
Water Year Totals: 48.27" 36.85" 362 days 10.10" 80 26.75" 282 days 65 39 days 4 days 1.0" 3 days 9 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 0.04
10/2/2019 0.01
10/3/2019 0.19
10/4/2019 0.10
10/5/2019 **
10/6/2019 **
10/7/2019 0.00
10/8/2019 0.09
10/9/2019 0.02
10/10/2019 0.08
10/11/2019 0.01
10/12/2019 **
10/13/2019 **
10/14/2019 **
10/15/2019 0.39
10/16/2019 0.00
10/17/2019 1.53
10/18/2019 0.00
10/19/2019 **
10/20/2019 **
10/21/2019 T
10/22/2019 0.00
10/23/2019 0.36
10/24/2019 0.00
10/25/2019 0.00
10/26/2019 **
10/27/2019 **
10/28/2019 **
10/29/2019 1.75
10/30/2019 0.02
10/31/2019 0.07
11/1/2019 **
11/2/2019 **
11/3/2019 **
11/4/2019 **
11/5/2019 0.16
11/6/2019 0.43
11/7/2019 0.00
11/8/2019 0.14
11/9/2019 **
11/10/2019 **
11/11/2019 **
11/12/2019 0.00
11/13/2019 **
11/14/2019 0.02
11/15/2019 0.00
11/16/2019 **
11/17/2019 **
11/18/2019 T
11/19/2019 0.27
11/20/2019 0.16
11/21/2019 0.14
11/22/2019 0.00
11/23/2019 **
11/24/2019 **
11/25/2019 1.12
11/26/2019 0.00
11/27/2019 0.00
11/28/2019 **
11/29/2019 **
11/30/2019 **
12/1/2019 **
12/2/2019 1.13
12/3/2019 0.47
12/4/2019 0.10
12/5/2019 0.00
12/6/2019 0.00
12/7/2019
12/8/2019 **
12/9/2019 0.02
12/10/2019 0.54
12/11/2019 **
12/12/2019 0.26
12/13/2019 **
12/14/2019 **
12/15/2019 **
12/16/2019 0.78
12/17/2019 0.04
12/18/2019 0.56
12/19/2019 0.00
12/20/2019 0.00
12/21/2019
12/22/2019
12/23/2019 0.00
12/24/2019 **
12/25/2019 **
12/26/2019 0.00
12/27/2019 T
12/28/2019 **
12/29/2019 **
12/30/2019 0.51
12/31/2019 1.32
Day of YearDaily PrcpMultiday Prcp
1/1/2020 **
1/2/2020 0.00
1/3/2020 0.00
1/4/2020 **
1/5/2020 **
1/6/2020 0.16
1/7/2020 0.00
1/8/2020 T
1/9/2020 T
1/10/2020 0.00
1/11/2020 **
1/12/2020 **
1/13/2020 0.00
1/14/2020 **
1/15/2020 T
1/16/2020 0.03
1/17/2020 **
1/18/2020 **
1/19/2020 **
1/20/2020 **
1/21/2020 0.32
1/22/2020 0.00
1/23/2020 0.00
1/24/2020 0.00
1/25/2020 **
1/26/2020 **
1/27/2020 2.40
1/28/2020 0.00
1/29/2020 0.00
1/30/2020 0.00
1/31/2020 0.00
2/1/2020 **
2/2/2020 **
2/3/2020 0.00
2/4/2020 0.00
2/5/2020 0.03
2/6/2020 0.32
2/7/2020 0.23
2/8/2020 **
2/9/2020 **
2/10/2020 2.10
2/11/2020 0.17
2/12/2020 0.12
2/13/2020 0.45
2/14/2020 0.07
2/15/2020 **
2/16/2020 **
2/17/2020 **
2/18/2020 0.00
2/19/2020 0.40
2/20/2020 0.00
2/21/2020 0.00
2/22/2020 **
2/23/2020 **
2/24/2020 0.00
2/25/2020 0.00
2/26/2020 0.34
2/27/2020 0.66
2/28/2020 0.08
2/29/2020 **
3/1/2020 0.00
3/2/2020 0.00
3/3/2020 0.00
3/4/2020 0.03
3/5/2020 0.00
3/6/2020 0.00
3/7/2020 **
3/8/2020 **
3/9/2020 0.00
3/10/2020 0.00
3/11/2020 0.00
3/12/2020 0.00
3/13/2020 0.23
3/14/2020 **
3/15/2020 **
3/16/2020 0.00
3/17/2020 T
3/18/2020 0.03
3/19/2020 **
3/20/2020 0.62
3/21/2020 **
3/22/2020 **
3/23/2020 0.00
3/24/2020 **
3/25/2020 **
3/26/2020 **
3/27/2020 1.51
3/28/2020 **
3/29/2020 **
3/30/2020 0.96
3/31/2020 **
Day of YearDaily PrcpMultiday Prcp
4/1/2020 **
4/2/2020 **
4/3/2020 0.78
4/4/2020 **
4/5/2020 **
4/6/2020 0.36
4/7/2020 **
4/8/2020 0.02
4/9/2020 **
4/10/2020 **
4/11/2020 **
4/12/2020 **
4/13/2020 0.74
4/14/2020 **
4/15/2020 **
4/16/2020 0.93
4/17/2020 0.00
4/18/2020 **
4/19/2020 **
4/20/2020 0.69
4/21/2020 **
4/22/2020 0.35
4/23/2020 **
4/24/2020 0.09
4/25/2020 **
4/26/2020 **
4/27/2020 0.59
4/28/2020 **
4/29/2020 **
4/30/2020 **
5/1/2020 1.16
5/2/2020 **
5/3/2020 **
5/4/2020 0.12
5/5/2020 **
5/6/2020 **
5/7/2020 **
5/8/2020 **
5/9/2020 **
5/10/2020 **
5/11/2020 0.35
5/12/2020 **
5/13/2020 **
5/14/2020 **
5/15/2020 **
5/16/2020 **
5/17/2020 **
5/18/2020 0.88
5/19/2020 **
5/20/2020 **
5/21/2020 0.00
5/22/2020 **
5/23/2020 **
5/24/2020 **
5/25/2020 **
5/26/2020 0.00
5/27/2020 **
5/28/2020 **
5/29/2020 **
5/30/2020 **
5/31/2020 **
6/1/2020 **
6/2/2020 **
6/3/2020 **
6/4/2020 **
6/5/2020 **
6/6/2020 **
6/7/2020 **
6/8/2020 0.47
6/9/2020 **
6/10/2020 **
6/11/2020 **
6/12/2020 0.66
6/13/2020 **
6/14/2020 **
6/15/2020 **
6/16/2020 0.00
6/17/2020 **
6/18/2020 0.00
6/19/2020 **
6/20/2020 **
6/21/2020 **
6/22/2020 **
6/23/2020 **
6/24/2020 **
6/25/2020 **
6/26/2020 0.00
6/27/2020 **
6/28/2020 **
6/29/2020 1.05
6/30/2020 **
Day of YearDaily PrcpMultiday Prcp
7/1/2020 **
7/2/2020 0.45
7/3/2020 **
7/4/2020 **
7/5/2020 **
7/6/2020 0.11
7/7/2020 **
7/8/2020 **
7/9/2020 0.00
7/10/2020 **
7/11/2020 **
7/12/2020 **
7/13/2020 **
7/14/2020 **
7/15/2020 **
7/16/2020 **
7/17/2020 **
7/18/2020 **
7/19/2020 **
7/20/2020 **
7/21/2020 **
7/22/2020 **
7/23/2020 **
7/24/2020 1.03
7/25/2020 **
7/26/2020 **
7/27/2020 **
7/28/2020 **
7/29/2020 **
7/30/2020 **
7/31/2020 0.00
8/1/2020 **
8/2/2020 **
8/3/2020 **
8/4/2020 0.05
8/5/2020 0.22
8/6/2020
8/7/2020 **
8/8/2020 **
8/9/2020 **
8/10/2020 0.00
8/11/2020 **
8/12/2020 **
8/13/2020 **
8/14/2020 0.00
8/15/2020 **
8/16/2020 **
8/17/2020 0.16
8/18/2020 **
8/19/2020 **
8/20/2020 **
8/21/2020 **
8/22/2020 **
8/23/2020 **
8/24/2020 **
8/25/2020 **
8/26/2020 **
8/27/2020 **
8/28/2020 **
8/29/2020 **
8/30/2020 **
8/31/2020 0.93
9/1/2020 **
9/2/2020 **
9/3/2020 **
9/4/2020 **
9/5/2020 **
9/6/2020 **
9/7/2020 **
9/8/2020 **
9/9/2020 0.22
9/10/2020 **
9/11/2020 **
9/12/2020 **
9/13/2020 **
9/14/2020 **
9/15/2020 **
9/16/2020 **
9/17/2020 **
9/18/2020 0.35
9/19/2020 **
9/20/2020 **
9/21/2020 **
9/22/2020 **
9/23/2020 **
9/24/2020 **
9/25/2020 **
9/26/2020 **
9/27/2020 **
9/28/2020 **
9/29/2020 **
9/30/2020 **



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2019 7:05 AM 0.04 M M M M
10/2/2019 8:45 AM 0.01 M M M M
10/3/2019 7:00 AM 0.19 0.0 M 0.0 M Temp: 49F, cloudy
10/4/2019 7:05 AM 0.10 M M M M
10/8/2019 7:05 AM 0.09 M M M M
10/9/2019 7:20 AM 0.02 0.0 M 0.0 M Temp: 55F, cloudy
10/10/2019 7:15 AM 0.08 0.0 M 0.0 M
10/11/2019 7:00 AM 0.01 M M M M
10/16/2019 8:45 AM 0.00 0.0 M M M
10/17/2019 8:20 AM 1.53 0.0 M 0.0 M
10/18/2019 8:50 AM 0.00 0.0 M M M
10/22/2019 7:00 AM 0.00 0.0 M M M
10/23/2019 9:00 AM 0.36 M M M M Rain ended before time of observation.
10/24/2019 7:30 AM 0.00 0.0 M 0.0 M Temp: 47F, clear skies
10/25/2019 7:00 AM 0.00 0.0 M M M
10/30/2019 8:55 AM 0.02 M M M M Not raining at time of observation.
10/31/2019 7:15 AM 0.07 0.0 M 0.0 M Temp: 61F, cloudy
11/6/2019 9:40 AM 0.43 0.0 M 0.0 M
11/7/2019 7:15 AM 0.00 0.0 M 0.0 M Temp: 43F, partly cloudy
11/8/2019 7:00 AM 0.14 M M M M
11/15/2019 7:00 AM 0.00 0.0 M M M
11/19/2019 7:05 AM 0.27 M M M M Light rain at time of ob
11/20/2019 8:00 AM 0.16 M M M M
11/21/2019 7:10 AM 0.14 0.0 M 0.0 M Temp: 33F, clear skies
11/22/2019 7:00 AM 0.00 0.0 M M M
11/26/2019 7:00 AM 0.00 0.0 M M M
11/27/2019 8:05 AM 0.00 0.0 M M M
12/3/2019 7:05 AM 0.47 M M 2.5 M Light snow at time of ob
12/4/2019 9:05 AM 0.10 M M 4.0 M
12/5/2019 7:05 AM 0.00 0.0 M 2.0 M Temp: 32F, partly cloudy
12/6/2019 7:00 AM 0.00 0.0 M M M
12/10/2019 8:10 AM 0.54 0.0 M 0.0 M Cloudy, no rain showers at time of observation.
12/17/2019 7:00 AM 0.04 0.3 M M M Light snow at time of ob
12/18/2019 8:45 AM 0.56 0.0 M 1.0 M Very light snow flurry just ending at time of ob. Snow from yesterday melted with overnight rain and sleet and froze before today's ob.
12/19/2019 7:05 AM 0.00 0.0 M 1.0 M Temp: 12F, clear skies
12/20/2019 7:00 AM 0.00 0.0 M M M
12/23/2019 7:05 AM 0.00 0.0 M M M
12/27/2019 7:00 AM T M M M M
12/31/2019 7:05 AM 1.32 M M M M Light rain at time of ob
1/3/2020 7:05 AM 0.00 0.0 M M M
1/7/2020 7:00 AM 0.00 0.0 M M M
1/8/2020 8:20 AM T 0.0 M 0.0 M Clearing skies at time of ob.
1/9/2020 7:00 AM T 0.0 M 0.0 M Temp: 20F, clear skies
1/10/2020 9:00 AM 0.00 0.0 M 0.0 M
1/16/2020 7:05 AM 0.03 0.0 M 0.0 M Light drizzle
1/22/2020 7:00 AM 0.00 0.0 M 2.0 M
1/23/2020 8:10 AM 0.00 0.0 M 2.0 M
1/24/2020 8:10 AM 0.00 0.0 M 1.5 M
1/28/2020 8:10 AM 0.00 0.0 M 0.0 M Partly sunny this morning, cooler, no precipitation yesterday evening.
1/29/2020 8:20 AM 0.00 0.0 M 0.0 M Mostly clear skies, 32F
1/30/2020 7:25 AM 0.00 0.0 M 0.0 M Temp 19F, clear skies
1/31/2020 8:30 AM 0.00 0.0 M 0.0 M Sunny, clear skies, 32 degrees
2/4/2020 8:10 AM 0.00 0.0 M M M Mostly cloudy today, warmer; chance of rain later this afternoon.
2/5/2020 8:23 AM 0.03 0.0 0.00 0.0 0.00 39 degrees this morning at time of measurement
2/6/2020 7:10 AM 0.32 0.5 M 0.5 M Light icy rain
2/7/2020 8:05 AM 0.23 0.0 M T M 35F and drizzly. Hardly any snow left on the ground- all that's left is the snow in shadows.
2/11/2020 8:15 AM 0.17 0.0 M M M Consistent drizzle throughout yesterday and last night. Misting this morning. {Edit: Original report of 1.70" was a decimal error).
2/12/2020 8:20 AM 0.12 0.0 0.00 0.0 0.00 34 degrees F this morning
2/13/2020 7:25 AM 0.45 0.2 M T M Snow to rain in early morning hours resulting in slush at measurement time.
2/14/2020 8:30 AM 0.07 0.0 M 0.0 M Sunny, partly cloudy 24F, water in rain gauge was frozen!
2/19/2020 8:15 AM 0.40 0.0 0.00 0.0 0.00
2/20/2020 7:00 AM 0.00 0.0 M 0.0 M Temp: 21F, sunny
2/21/2020 8:30 AM 0.00 0.0 M 0.0 M Clear skies, 16F
2/25/2020 8:05 AM 0.00 0.0 M M M Warmer today, in the high-50s, but cloudier.
2/26/2020 8:20 AM 0.34 0.0 M 0.0 M
2/27/2020 7:10 AM 0.66 0.0 M 0.0 M Steady rain
2/28/2020 8:30 AM 0.08 0.0 M 0.0 M 30F, clear sky, branches down from yesterday's wind
3/2/2020 8:10 AM 0.00 0.0 M M M Cool today, mostly cloudy.
3/3/2020 8:00 AM 0.00 0.0 M M M Warmer today and sunnier.
3/4/2020 8:25 AM 0.03 0.0 0.00 0.0 0.00
3/5/2020 8:05 AM 0.00 0.0 M M M Sunny and warm today.
3/6/2020 7:55 AM 0.00 0.0 M 0.0 M 40F, sunny, only a few clouds
3/10/2020 8:15 AM 0.00 0.0 M M M Cooler today and overcast, but sunshine still poking through. No rain yesterday or this morning.
3/11/2020 8:20 AM 0.00 0.0 0.00 0.0 0.00 42 F this morning, clear skies
3/12/2020 7:55 AM 0.00 0.0 M 0.0 M
3/13/2020 10:30 AM 0.23 M M M M
3/17/2020 7:10 AM T 0.0 M M M Light snow at time of ob
3/18/2020 7:30 AM 0.03 M M M M
4/17/2020 7:30 AM 0.00 0.0 M M M
8/5/2020 3:00 PM 0.22 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/5/2019 10/07/2019 7:25 AM 3 0.00 M M
10/12/2019 10/15/2019 7:00 AM 4 0.39 M M
10/19/2019 10/21/2019 7:30 AM 3 T M M
10/26/2019 10/29/2019 10:30 AM 4 1.75 M M
11/1/2019 11/05/2019 8:20 AM 5 0.16 M M
11/9/2019 11/12/2019 7:10 AM 4 0.00 M M
11/13/2019 11/14/2019 7:00 AM 2 0.02 0.0 M
11/16/2019 11/18/2019 7:15 AM 3 T M M Temp: 32F, light drizzle
11/23/2019 11/25/2019 7:15 AM 3 1.12 M M
11/28/2019 12/02/2019 8:45 AM 5 1.13 0.0 M Rain shower in progress at time of observation (and likely overnight 12/1-12/2).
12/8/2019 12/09/2019 7:25 AM 2 0.02 0.4 M Temp: 41F, light rain
12/11/2019 12/12/2019 7:30 AM 2 0.26 1.4 M
12/13/2019 12/16/2019 7:20 AM 4 0.78 M M
12/24/2019 12/26/2019 7:30 AM 3 0.00 M M
12/28/2019 12/30/2019 6:55 AM 3 0.51 M M Temp: 38F, light rain
1/1/2020 1/02/2020 7:15 AM 2 0.00 M M
1/4/2020 1/06/2020 7:10 AM 3 0.16 M M
1/11/2020 1/13/2020 7:00 AM 3 0.00 M M
1/14/2020 1/15/2020 7:00 AM 2 T M M
1/17/2020 1/21/2020 7:00 AM 5 0.32 2.0 M
1/25/2020 1/27/2020 8:19 AM 3 2.40 M M Mostly sunny this morning, around high-30s.
2/1/2020 2/03/2020 7:00 AM 3 0.00 0.0 M
2/8/2020 2/10/2020 8:10 AM 3 2.10 0.0 M Rainy on Friday and Saturday, sunny but cooler on Sunday. Warmer this morning, but still drizzling.
2/15/2020 2/18/2020 8:28 AM 4 0.00 0.0 0.00 Sunny this past weekend, but cool; overcast today, but warmer. Not as windy.
2/22/2020 2/24/2020 7:00 AM 3 0.00 0.0 M
2/29/2020 3/01/2020 7:00 AM 2 0.00 M M
3/7/2020 3/09/2020 7:30 AM 3 0.00 M M Sunny, clear skies
3/14/2020 3/16/2020 7:10 AM 3 0.00 M M
3/19/2020 3/20/2020 7:10 AM 2 0.62 M M
3/21/2020 3/23/2020 7:00 AM 3 0.00 M M
3/24/2020 3/27/2020 7:00 AM 4 1.51 M M
3/28/2020 3/30/2020 7:00 AM 3 0.96 M M
3/31/2020 4/03/2020 10:00 AM 4 0.78 M M
4/4/2020 4/06/2020 7:00 AM 3 0.36 M M
4/7/2020 4/08/2020 7:00 AM 2 0.02 M M
4/9/2020 4/13/2020 7:30 AM 5 0.74 M M
4/14/2020 4/16/2020 7:00 AM 3 0.93 M M
4/18/2020 4/20/2020 8:30 AM 3 0.69 M M
4/21/2020 4/22/2020 1:00 PM 2 0.35 M M
4/23/2020 4/24/2020 7:00 AM 2 0.09 M M
4/25/2020 4/27/2020 7:00 AM 3 0.59 M M
4/28/2020 5/01/2020 7:00 AM 4 1.16 M M
5/2/2020 5/04/2020 7:00 AM 3 0.12 M M
5/5/2020 5/11/2020 3:00 PM 7 0.35 M M
5/12/2020 5/18/2020 7:00 AM 7 0.88 M M
5/19/2020 5/21/2020 8:40 AM 3 0.00 M M
5/22/2020 5/26/2020 11:00 AM 5 0.00 M M
5/27/2020 6/08/2020 11:00 AM 13 0.47 M M
6/9/2020 6/12/2020 7:00 AM 4 0.66 M M
6/13/2020 6/16/2020 11:00 AM 4 0.00 M M
6/17/2020 6/18/2020 11:00 AM 2 0.00 M M
6/19/2020 6/26/2020 7:00 AM 8 0.00 M M
6/27/2020 6/29/2020 7:00 AM 3 1.05 M M
6/30/2020 7/02/2020 10:00 AM 3 0.45 M M
7/3/2020 7/06/2020 10:00 AM 4 0.11 M M
7/7/2020 7/09/2020 9:30 AM 3 0.00 M M
7/10/2020 7/24/2020 10:00 AM 15 1.03 M M
7/25/2020 7/31/2020 9:00 AM 7 0.00 M M
8/1/2020 8/04/2020 11:00 AM 4 0.05 M M
8/7/2020 8/10/2020 7:00 AM 4 0.00 M M
8/11/2020 8/14/2020 7:00 AM 4 0.00 M M
8/15/2020 8/17/2020 11:30 AM 3 0.16 M M
8/18/2020 8/31/2020 11:00 AM 14 0.93 M M
9/1/2020 9/09/2020 2:00 PM 9 0.22 M M
9/10/2020 9/18/2020 8:30 AM 9 0.35 M M
9/19/2020 10/09/2020 9:00 AM 21 1.03 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