Station Overview Station Location
Station Number PA-CH-46 Latitude 40.020762
Station Name Downingtown 1.7 NE Longitude -75.676222
County Chester Elevation (ft) 289



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 18 4.07 2.66 13 2.66 13 0.00 0 0 13 0 0.0 0 0
Nov 18 3.75 7.87 12 7.87 12 0.00 0 0 12 0 5.2 1 1
Dec 18 3.92 5.77 9 5.77 9 0.00 0 0 9 0 0.0 0 0
Jan 19 3.39 5.07 11 5.07 11 0.00 0 0 11 0 5.5 5 4
Feb 19 2.89 2.88 9 2.88 9 0.00 0 0 9 0 8.0 4 5
March 19 4.00 4.91 10 4.91 10 0.00 0 0 10 0 8.2 3 3
April 19 3.85 4.59 10 4.59 10 0.00 0 0 10 0 0.0 0 0
May 19 4.17 6.99 15 6.99 15 0.00 0 0 15 0 0.0 0 0
June 19 4.00 7.82 15 7.82 15 0.00 0 0 15 0 0.0 0 0
July 19 4.63 8.72 11 8.72 11 0.00 0 0 11 0 0.0 0 0
Aug 19 3.84 3.04 8 3.04 8 0.00 0 0 8 0 0.0 0 0
Sept 19 4.85 0.91 6 0.91 6 0.00 0 0 6 0 0.0 0 0
Water Year Totals: 47.36" 61.23" 129 days 61.23" 129 0.00" 0 days 0 129 days 0 days 26.9" 13 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
10/1/2018
10/2/2018
10/3/2018 0.42
10/4/2018
10/5/2018 0.03
10/6/2018
10/7/2018
10/8/2018
10/9/2018 0.02
10/10/2018
10/11/2018 0.02
10/12/2018 0.66
10/13/2018 0.08
10/14/2018
10/15/2018 0.07
10/16/2018 0.21
10/17/2018
10/18/2018
10/19/2018 0.10
10/20/2018
10/21/2018 0.02
10/22/2018
10/23/2018
10/24/2018
10/25/2018
10/26/2018
10/27/2018 0.75
10/28/2018 0.20
10/29/2018 0.08
10/30/2018
10/31/2018
11/1/2018
11/2/2018 0.03
11/3/2018 1.22
11/4/2018
11/5/2018 0.11
11/6/2018 0.34
11/7/2018 0.67
11/8/2018 0.02
11/9/2018
11/10/2018 0.82
11/11/2018
11/12/2018
11/13/2018 0.83
11/14/2018 0.07
11/15/2018
11/16/2018 1.35
11/17/2018
11/18/2018
11/19/2018
11/20/2018
11/21/2018
11/22/2018
11/23/2018
11/24/2018
11/25/2018 1.75
11/26/2018
11/27/2018 0.66
11/28/2018
11/29/2018
11/30/2018
12/1/2018
12/2/2018 0.52
12/3/2018 0.10
12/4/2018
12/5/2018
12/6/2018
12/7/2018
12/8/2018
12/9/2018
12/10/2018
12/11/2018
12/12/2018
12/13/2018
12/14/2018
12/15/2018
12/16/2018 1.24
12/17/2018 0.24
12/18/2018
12/19/2018
12/20/2018
12/21/2018 2.23
12/22/2018 0.11
12/23/2018
12/24/2018 0.05
12/25/2018
12/26/2018
12/27/2018
12/28/2018 0.57
12/29/2018 0.71
12/30/2018
12/31/2018
Day of YearDaily PrcpMultiday Prcp
1/1/2019 0.82
1/2/2019
1/3/2019
1/4/2019
1/5/2019 0.27
1/6/2019
1/7/2019
1/8/2019 0.31
1/9/2019
1/10/2019
1/11/2019
1/12/2019
1/13/2019 0.16
1/14/2019
1/15/2019
1/16/2019
1/17/2019
1/18/2019 0.15
1/19/2019
1/20/2019 1.35
1/21/2019 0.20
1/22/2019
1/23/2019
1/24/2019 0.60
1/25/2019 0.88
1/26/2019
1/27/2019
1/28/2019
1/29/2019
1/30/2019 0.30
1/31/2019 0.03
2/1/2019
2/2/2019 0.10
2/3/2019
2/4/2019
2/5/2019
2/6/2019
2/7/2019 0.37
2/8/2019 0.08
2/9/2019
2/10/2019
2/11/2019 0.15
2/12/2019 0.11
2/13/2019 0.84
2/14/2019
2/15/2019
2/16/2019
2/17/2019
2/18/2019
2/19/2019
2/20/2019
2/21/2019 0.71
2/22/2019
2/23/2019
2/24/2019 0.44
2/25/2019 0.08
2/26/2019
2/27/2019
2/28/2019
3/1/2019 0.38
3/2/2019 0.52
3/3/2019
3/4/2019 0.77
3/5/2019
3/6/2019
3/7/2019
3/8/2019
3/9/2019
3/10/2019 0.63
3/11/2019 0.18
3/12/2019
3/13/2019
3/14/2019
3/15/2019
3/16/2019 0.35
3/17/2019
3/18/2019
3/19/2019
3/20/2019
3/21/2019 0.05
3/22/2019 1.65
3/23/2019
3/24/2019
3/25/2019
3/26/2019 0.36
3/27/2019
3/28/2019
3/29/2019
3/30/2019 0.02
3/31/2019
Day of YearDaily PrcpMultiday Prcp
4/1/2019 0.12
4/2/2019
4/3/2019
4/4/2019
4/5/2019
4/6/2019 0.19
4/7/2019
4/8/2019 0.19
4/9/2019
4/10/2019
4/11/2019
4/12/2019
4/13/2019 0.53
4/14/2019
4/15/2019 0.76
4/16/2019
4/17/2019
4/18/2019
4/19/2019
4/20/2019 1.30
4/21/2019 0.26
4/22/2019
4/23/2019
4/24/2019
4/25/2019
4/26/2019 0.26
4/27/2019 0.91
4/28/2019
4/29/2019
4/30/2019 0.07
5/1/2019
5/2/2019
5/3/2019
5/4/2019 0.04
5/5/2019 0.47
5/6/2019 1.05
5/7/2019
5/8/2019 0.21
5/9/2019
5/10/2019
5/11/2019 0.05
5/12/2019 0.37
5/13/2019 0.83
5/14/2019 0.70
5/15/2019
5/16/2019
5/17/2019
5/18/2019 0.27
5/19/2019
5/20/2019 0.02
5/21/2019
5/22/2019
5/23/2019
5/24/2019 0.51
5/25/2019
5/26/2019 0.03
5/27/2019
5/28/2019
5/29/2019 1.55
5/30/2019 0.74
5/31/2019 0.15
6/1/2019
6/2/2019 0.22
6/3/2019 0.06
6/4/2019
6/5/2019
6/6/2019 0.54
6/7/2019
6/8/2019
6/9/2019
6/10/2019 0.19
6/11/2019 0.99
6/12/2019
6/13/2019 0.77
6/14/2019 0.27
6/15/2019
6/16/2019
6/17/2019 0.31
6/18/2019 0.21
6/19/2019 0.05
6/20/2019 2.31
6/21/2019 0.98
6/22/2019 0.15
6/23/2019
6/24/2019
6/25/2019 0.05
6/26/2019
6/27/2019
6/28/2019
6/29/2019
6/30/2019 0.72
Day of YearDaily PrcpMultiday Prcp
7/1/2019
7/2/2019
7/3/2019 0.26
7/4/2019
7/5/2019 0.94
7/6/2019 0.23
7/7/2019 0.83
7/8/2019 0.06
7/9/2019
7/10/2019
7/11/2019 3.38
7/12/2019 0.07
7/13/2019
7/14/2019
7/15/2019
7/16/2019
7/17/2019 0.06
7/18/2019 0.43
7/19/2019 0.83
7/20/2019
7/21/2019
7/22/2019
7/23/2019 1.63
7/24/2019
7/25/2019
7/26/2019
7/27/2019
7/28/2019
7/29/2019
7/30/2019
7/31/2019
8/1/2019 0.20
8/2/2019
8/3/2019
8/4/2019
8/5/2019
8/6/2019
8/7/2019
8/8/2019 0.15
8/9/2019 0.17
8/10/2019
8/11/2019
8/12/2019
8/13/2019
8/14/2019 0.10
8/15/2019 1.53
8/16/2019
8/17/2019
8/18/2019
8/19/2019
8/20/2019
8/21/2019
8/22/2019 0.77
8/23/2019 0.04
8/24/2019 0.08
8/25/2019
8/26/2019
8/27/2019
8/28/2019
8/29/2019
8/30/2019
8/31/2019
9/1/2019
9/2/2019
9/3/2019 0.20
9/4/2019
9/5/2019 0.02
9/6/2019
9/7/2019
9/8/2019
9/9/2019
9/10/2019
9/11/2019
9/12/2019 0.26
9/13/2019 0.30
9/14/2019
9/15/2019 0.04
9/16/2019
9/17/2019
9/18/2019
9/19/2019
9/20/2019
9/21/2019
9/22/2019
9/23/2019
9/24/2019
9/25/2019
9/26/2019
9/27/2019 0.09
9/28/2019
9/29/2019
9/30/2019



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/3/2018 7:00 AM 0.42 M M M M
10/5/2018 8:00 AM 0.03 M M M M
10/9/2018 7:00 AM 0.02 M M M M
10/11/2018 7:00 AM 0.02 M M M M
10/12/2018 7:00 AM 0.66 M M M M
10/13/2018 7:00 AM 0.08 M M M M light rain at observation time
10/15/2018 8:00 AM 0.07 M M M M intermittent light rain at observation
10/16/2018 8:00 AM 0.21 M M M M
10/19/2018 8:00 AM 0.10 M M M M
10/21/2018 8:00 AM 0.02 M M M M
10/27/2018 7:00 AM 0.75 M M M M light rain and observation
10/28/2018 7:00 AM 0.20 M M M M
10/29/2018 8:00 AM 0.08 M M M M
11/2/2018 8:00 AM 0.03 M M M M
11/3/2018 8:00 AM 1.22 M M M M
11/5/2018 8:00 AM 0.11 M M M M light rain at observation
11/6/2018 7:00 AM 0.34 M M M M drizzle at observation
11/7/2018 8:00 AM 0.67 M M M M
11/8/2018 8:00 AM 0.02 M M M M
11/10/2018 7:00 AM 0.82 M M M M
11/13/2018 7:00 AM 0.83 M M M M light rain at observation
11/14/2018 7:00 AM 0.07 M M M M
11/16/2018 8:00 AM 1.35 5.2 0.55 3.0 0.65
11/25/2018 7:00 AM 1.75 M M M M
11/27/2018 7:00 AM 0.66 M M M M
12/2/2018 7:00 AM 0.52 M M M M
12/3/2018 8:00 AM 0.10 M M M M
12/16/2018 7:00 AM 1.24 M M M M drizzle 38 F
12/17/2018 8:00 AM 0.24 M M M M
12/21/2018 8:00 AM 2.23 M M M M
12/22/2018 8:00 AM 0.11 M M M M
12/24/2018 8:00 AM 0.05 M M M M
12/28/2018 7:00 AM 0.57 M M M M light rain
12/29/2018 8:00 AM 0.71 M M M M
1/1/2019 8:00 AM 0.82 M M M M rain ended around midnight (reference 2018 totals)
1/5/2019 8:00 AM 0.27 M M M M
1/8/2019 7:00 AM 0.31 M M M M .10 sleet melted as it fell
1/13/2019 7:00 AM 0.16 1.6 0.16 1.6 0.16 intermittent very light snow
1/18/2019 8:00 AM 0.15 1.5 0.15 2.0 0.18
1/20/2019 7:00 AM 1.35 0.8 M 0.0 M drizzle
1/21/2019 8:00 AM 0.20 M M M M morning on 20th
1/24/2019 8:00 AM 0.60 M M M M rain
1/25/2019 8:00 AM 0.88 M M M M
1/30/2019 8:00 AM 0.30 1.3 0.13 1.0 0.13
1/31/2019 8:00 AM 0.03 0.3 0.03 1.3 0.13
2/2/2019 8:00 AM 0.10 1.0 0.10 2.0 0.18
2/7/2019 7:00 AM 0.37 M M M M drizzle
2/8/2019 8:00 AM 0.08 M M M M Occasional light rain
2/11/2019 8:00 AM 0.15 1.5 0.15 1.5 0.15 very light snow
2/12/2019 7:00 AM 0.11 1.0 0.10 2.0 0.18 intermittent light freezing rain
2/13/2019 8:00 AM 0.84 M M 1.5 0.15 rain and early freezing rain
2/21/2019 7:00 AM 0.71 4.5 0.45 4.5 0.45 mix snow , freezing rain and rain
2/24/2019 7:00 AM 0.44 M M M M
2/25/2019 8:00 AM 0.08 M M M M
3/1/2019 8:00 AM 0.38 3.8 0.38 4.0 0.38 4 inches snow on ground
3/2/2019 8:00 AM 0.52 0.4 0.04 2.3 0.23 rain/freezing rain and sleet
3/4/2019 8:00 AM 0.77 4.0 0.40 4.0 0.40 WET SNOW AND RAIN MIXED
3/10/2019 8:00 AM 0.63 M M M M
3/11/2019 8:00 AM 0.18 M M M M
3/16/2019 8:00 AM 0.35 M M M M overnight thunderstorm
3/21/2019 8:00 AM 0.05 M M M M
3/22/2019 8:00 AM 1.65 M M M M light rain
3/26/2019 8:00 AM 0.36 M M M M
3/30/2019 8:00 AM 0.02 M M M M
4/1/2019 8:00 AM 0.12 M M M M
4/6/2019 8:00 AM 0.19 M M M M
4/8/2019 8:00 AM 0.19 M M M M
4/13/2019 8:00 AM 0.53 M M M M
4/15/2019 8:00 AM 0.76 M M M M
4/20/2019 8:00 AM 1.30 M M M M brief heavy rain
4/21/2019 8:00 AM 0.26 M M M M rain ending
4/26/2019 7:00 AM 0.26 M M M M
4/27/2019 7:00 AM 0.91 M M M M
4/30/2019 8:00 AM 0.07 M M M M
5/4/2019 8:00 AM 0.04 M M M M
5/5/2019 7:00 AM 0.47 M M M M
5/6/2019 8:00 AM 1.05 M M M M
5/8/2019 7:00 AM 0.21 M M M M
5/11/2019 8:00 AM 0.05 M M M M
5/12/2019 8:00 AM 0.37 M M M M
5/13/2019 8:00 AM 0.83 M M M M intermittent light rain
5/14/2019 7:00 AM 0.70 M M M M
5/18/2019 8:00 AM 0.27 M M M M
5/20/2019 8:00 AM 0.02 M M M M thunderstorm overnight to the north
5/24/2019 8:00 AM 0.51 M M M M EF1 tornado near Honey Brook 11 pm overnight
5/26/2019 7:00 AM 0.03 M M M M
5/29/2019 8:00 AM 1.55 M M M M minor local flooding
5/30/2019 8:00 AM 0.74 M M M M
5/31/2019 8:00 AM 0.15 M M M M
6/2/2019 8:00 AM 0.22 M M M M
6/3/2019 8:00 AM 0.06 M M M M
6/6/2019 7:00 AM 0.54 M M M M
6/10/2019 8:00 AM 0.19 M M M M light rain
6/11/2019 7:00 AM 0.99 M M M M
6/13/2019 8:00 AM 0.77 M M M M
6/14/2019 8:00 AM 0.27 M M M M
6/17/2019 8:00 AM 0.31 M M M M warm and humid
6/18/2019 7:00 AM 0.21 M M M M
6/19/2019 7:00 AM 0.05 M M M M
6/20/2019 7:00 AM 2.31 M M M M
6/21/2019 7:00 AM 0.98 M M M M
6/22/2019 8:00 AM 0.15 M M M M
6/25/2019 6:50 AM 0.05 M M M M intermittent light rain
6/30/2019 7:00 AM 0.72 M M M M afternoon of 29th wind gusts to 50mph and small hail
7/3/2019 8:00 AM 0.26 M M M M
7/5/2019 7:00 AM 0.94 M M M M drizzle at observation
7/6/2019 8:00 AM 0.23 M M M M very humid
7/7/2019 7:00 AM 0.83 M M M M humid
7/8/2019 8:00 AM 0.06 M M M M intermittent light rain
7/11/2019 6:15 PM 3.38 M M M M 2pm to 6:15 pm 3.38 inches
7/12/2019 8:00 AM 0.07 M M M M
7/17/2019 7:00 AM 0.06 M M M M
7/18/2019 7:00 AM 0.43 M M M M
7/19/2019 7:00 AM 0.83 M M M M
7/23/2019 7:00 AM 1.63 M M M M intermittent light rain
8/1/2019 8:00 AM 0.20 M M M M
8/8/2019 8:00 AM 0.15 M M M M much high precipitation 20 miles to east
8/9/2019 7:00 AM 0.17 M M M M
8/14/2019 7:00 AM 0.10 M M M M
8/15/2019 7:00 AM 1.53 M M M M
8/22/2019 7:00 AM 0.77 M M M M
8/23/2019 8:00 AM 0.04 M M M M heavier rains to east and southeast
8/24/2019 8:00 AM 0.08 M M M M
9/3/2019 7:00 AM 0.20 M M M M
9/5/2019 7:00 AM 0.02 M M M M
9/12/2019 7:00 AM 0.26 M M M M
9/13/2019 8:00 AM 0.30 M M M M
9/15/2019 7:00 AM 0.04 M M M M
9/27/2019 8:00 AM 0.09 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes



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