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 19 4.07 5.82 12 5.82 12 0.00 0 0 12 0 0.0 0 0
Nov 19 3.75 2.59 6 2.59 6 0.00 0 0 6 0 0.0 0 0
Dec 19 3.92 5.15 14 5.15 14 0.00 0 0 14 0 0.9 2 1
Jan 20 3.39 3.60 11 3.60 11 0.00 0 0 11 0 2.0 2 1
Feb 20 2.89 2.97 12 2.21 9 0.76 3 1 9 0 0.0 0 0
March 20 4.00 4.67 13 4.67 13 0.00 0 0 13 0 0.0 0 0
April 20 3.85 4.94 12 4.94 12 0.00 0 0 12 0 0.0 0 0
May 20 4.17 3.20 10 3.20 10 0.00 0 0 10 0 0.0 0 0
June 20 4.00 3.66 10 3.66 10 0.00 0 0 10 0 0.0 0 0
July 20 4.63 4.45 7 4.45 7 0.00 0 0 7 0 0.0 0 0
Aug 20 3.84 9.58 13 9.58 13 0.00 0 0 13 0 0.0 0 0
Sept 20 4.85 3.29 9 3.29 9 0.00 0 0 9 0 0.0 0 0
Water Year Totals: 47.36" 53.92" 129 days 53.16" 126 0.76" 3 days 1 126 days 0 days 2.9" 4 days 2 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 0.06
10/4/2019 0.10
10/5/2019
10/6/2019
10/7/2019 0.14
10/8/2019 0.46
10/9/2019 0.22
10/10/2019
10/11/2019
10/12/2019
10/13/2019
10/14/2019
10/15/2019
10/16/2019
10/17/2019 1.52
10/18/2019
10/19/2019
10/20/2019
10/21/2019 0.56
10/22/2019 0.02
10/23/2019 0.64
10/24/2019
10/25/2019
10/26/2019
10/27/2019 0.24
10/28/2019 1.34
10/29/2019
10/30/2019
10/31/2019 0.52
11/1/2019 1.05
11/2/2019
11/3/2019
11/4/2019
11/5/2019
11/6/2019
11/7/2019
11/8/2019 0.16
11/9/2019
11/10/2019
11/11/2019
11/12/2019 0.13
11/13/2019 0.07
11/14/2019
11/15/2019
11/16/2019
11/17/2019
11/18/2019
11/19/2019
11/20/2019
11/21/2019
11/22/2019
11/23/2019 0.10
11/24/2019 1.08
11/25/2019
11/26/2019
11/27/2019
11/28/2019
11/29/2019
11/30/2019
12/1/2019
12/2/2019 0.73
12/3/2019 0.02
12/4/2019
12/5/2019 0.10
12/6/2019
12/7/2019 0.10
12/8/2019
12/9/2019 0.19
12/10/2019 0.73
12/11/2019 0.36
12/12/2019
12/13/2019
12/14/2019 0.63
12/15/2019 0.10
12/16/2019
12/17/2019 0.95
12/18/2019 0.26
12/19/2019 0.03
12/20/2019
12/21/2019
12/22/2019
12/23/2019
12/24/2019
12/25/2019
12/26/2019
12/27/2019
12/28/2019
12/29/2019
12/30/2019 0.64
12/31/2019 0.31
Day of YearDaily PrcpMultiday Prcp
1/1/2020 0.02
1/2/2020
1/3/2020 0.09
1/4/2020 0.22
1/5/2020
1/6/2020
1/7/2020
1/8/2020 0.11
1/9/2020
1/10/2020
1/11/2020
1/12/2020 0.22
1/13/2020 0.01
1/14/2020
1/15/2020 0.05
1/16/2020 0.09
1/17/2020
1/18/2020
1/19/2020 0.45
1/20/2020
1/21/2020
1/22/2020
1/23/2020
1/24/2020
1/25/2020 1.24
1/26/2020 1.10
1/27/2020
1/28/2020
1/29/2020
1/30/2020
1/31/2020
2/1/2020 0.10
2/2/2020 0.07
2/3/2020
2/4/2020 0.03
2/5/2020 0.11
2/6/2020 0.46
2/7/2020
2/8/2020 0.20
2/9/2020
2/10/2020 **
2/11/2020 **
2/12/2020 M 0.76
2/13/2020 0.27
2/14/2020
2/15/2020
2/16/2020
2/17/2020
2/18/2020
2/19/2020
2/20/2020
2/21/2020
2/22/2020
2/23/2020
2/24/2020
2/25/2020
2/26/2020 0.20
2/27/2020 0.77
2/28/2020
2/29/2020
3/1/2020
3/2/2020
3/3/2020 0.07
3/4/2020 0.32
3/5/2020
3/6/2020
3/7/2020 0.40
3/8/2020
3/9/2020
3/10/2020
3/11/2020
3/12/2020 0.04
3/13/2020 0.32
3/14/2020
3/15/2020
3/16/2020
3/17/2020
3/18/2020
3/19/2020 0.89
3/20/2020 0.04
3/21/2020
3/22/2020
3/23/2020 0.12
3/24/2020 0.71
3/25/2020
3/26/2020
3/27/2020
3/28/2020 0.18
3/29/2020 1.51
3/30/2020 0.03
3/31/2020 0.04
Day of YearDaily PrcpMultiday Prcp
4/1/2020
4/2/2020
4/3/2020
4/4/2020
4/5/2020
4/6/2020
4/7/2020
4/8/2020 0.67
4/9/2020
4/10/2020 0.06
4/11/2020
4/12/2020
4/13/2020 1.55
4/14/2020 0.83
4/15/2020 0.08
4/16/2020
4/17/2020
4/18/2020 0.08
4/19/2020
4/20/2020
4/21/2020
4/22/2020
4/23/2020 0.17
4/24/2020 0.75
4/25/2020 0.23
4/26/2020 0.26
4/27/2020 0.24
4/28/2020 0.02
4/29/2020
4/30/2020
5/1/2020 1.27
5/2/2020
5/3/2020 0.09
5/4/2020
5/5/2020
5/6/2020
5/7/2020 0.22
5/8/2020
5/9/2020 0.47
5/10/2020
5/11/2020 0.09
5/12/2020
5/13/2020
5/14/2020
5/15/2020 0.02
5/16/2020
5/17/2020
5/18/2020
5/19/2020
5/20/2020
5/21/2020
5/22/2020
5/23/2020 0.85
5/24/2020 0.09
5/25/2020
5/26/2020
5/27/2020
5/28/2020 0.06
5/29/2020 0.04
5/30/2020
5/31/2020
6/1/2020
6/2/2020
6/3/2020
6/4/2020 1.42
6/5/2020 0.46
6/6/2020 0.74
6/7/2020
6/8/2020
6/9/2020
6/10/2020
6/11/2020 0.32
6/12/2020 0.07
6/13/2020
6/14/2020
6/15/2020
6/16/2020
6/17/2020
6/18/2020 0.06
6/19/2020
6/20/2020 0.06
6/21/2020
6/22/2020
6/23/2020
6/24/2020
6/25/2020
6/26/2020 0.35
6/27/2020 0.10
6/28/2020
6/29/2020 0.08
6/30/2020
Day of YearDaily PrcpMultiday Prcp
7/1/2020
7/2/2020 0.06
7/3/2020
7/4/2020 0.04
7/5/2020
7/6/2020
7/7/2020 0.78
7/8/2020
7/9/2020
7/10/2020
7/11/2020 2.80
7/12/2020
7/13/2020 0.07
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 0.30
7/24/2020 0.40
7/25/2020
7/26/2020
7/27/2020
7/28/2020
7/29/2020
7/30/2020
7/31/2020
8/1/2020
8/2/2020 0.04
8/3/2020
8/4/2020 0.83
8/5/2020 4.49
8/6/2020
8/7/2020 0.10
8/8/2020 1.51
8/9/2020
8/10/2020
8/11/2020
8/12/2020
8/13/2020 1.05
8/14/2020
8/15/2020
8/16/2020 0.35
8/17/2020 0.17
8/18/2020 0.04
8/19/2020
8/20/2020 0.04
8/21/2020
8/22/2020
8/23/2020
8/24/2020 0.20
8/25/2020
8/26/2020
8/27/2020
8/28/2020
8/29/2020 0.60
8/30/2020 0.16
8/31/2020
9/1/2020 0.12
9/2/2020
9/3/2020 0.07
9/4/2020 0.15
9/5/2020
9/6/2020
9/7/2020
9/8/2020
9/9/2020
9/10/2020 0.13
9/11/2020 0.33
9/12/2020
9/13/2020
9/14/2020
9/15/2020
9/16/2020
9/17/2020
9/18/2020
9/19/2020
9/20/2020
9/21/2020
9/22/2020
9/23/2020
9/24/2020
9/25/2020
9/26/2020 0.68
9/27/2020 0.11
9/28/2020 0.17
9/29/2020
9/30/2020 1.53



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/3/2019 8:00 AM 0.06 M M M M intermittent light rain
10/4/2019 8:00 AM 0.10 M M M M
10/7/2019 8:00 AM 0.14 M M M M
10/8/2019 7:00 AM 0.46 M M M M
10/9/2019 9:00 AM 0.22 M M M M
10/17/2019 7:00 AM 1.52 M M M M no flooding or ponding from rains
10/21/2019 8:00 AM 0.56 M M M M
10/22/2019 8:00 AM 0.02 M M M M
10/23/2019 8:00 AM 0.64 M M M M
10/27/2019 8:00 AM 0.24 M M M M Heavy rain on the way
10/28/2019 8:00 AM 1.34 M M M M
10/31/2019 8:00 AM 0.52 M M M M
11/1/2019 8:00 AM 1.05 M M M M
11/8/2019 8:00 AM 0.16 M M M M
11/12/2019 7:00 AM 0.13 M M M M light rain
11/13/2019 8:00 AM 0.07 M M M M Overnight low temperature 16F
11/23/2019 8:00 AM 0.10 M M M M
11/24/2019 7:00 AM 1.08 M M M M
12/2/2019 8:00 AM 0.73 M M M M
12/3/2019 8:00 AM 0.02 M M M M
12/5/2019 7:00 AM 0.10 M M M M
12/7/2019 8:00 AM 0.10 M M M M
12/9/2019 8:00 AM 0.19 M M M M
12/10/2019 8:00 AM 0.73 M M M M
12/11/2019 8:00 AM 0.36 0.6 0.06 0.8 0.06 Intermittent very light snow
12/14/2019 8:00 AM 0.63 M M M M
12/15/2019 8:00 AM 0.10 M M M M
12/17/2019 8:00 AM 0.95 M M M M light rain or drizzle with temperature 32.7 F
12/18/2019 8:00 AM 0.26 M M M M
12/19/2019 8:00 AM 0.03 0.3 0.03 T T evening snow squalls
12/30/2019 8:00 AM 0.64 M M M M
12/31/2019 7:00 AM 0.31 M M M M
1/1/2020 8:00 AM 0.02 M M M M
1/3/2020 8:00 AM 0.09 M M M M
1/4/2020 7:00 AM 0.22 M M M M dense fog
1/8/2020 8:00 AM 0.11 0.5 0.05 0.5 0.05 mixed rain and snow
1/12/2020 7:00 AM 0.22 M M M M
1/13/2020 8:00 AM 0.01 M M M M
1/15/2020 8:00 AM 0.05 M M M M
1/16/2020 8:00 AM 0.09 M M M M
1/19/2020 8:00 AM 0.45 1.5 0.15 M M mixed rain, sleet and snow with all rain at close of storm
1/25/2020 8:00 AM 1.24 M M M M rain, briefly heavy
1/26/2020 7:00 AM 1.10 M M M M
2/1/2020 8:00 AM 0.10 M M M M
2/2/2020 7:00 AM 0.07 M M M M
2/4/2020 7:00 AM 0.03 M M M M light intermittent rain
2/5/2020 8:00 AM 0.11 M M M M
2/6/2020 7:00 AM 0.46 M M M M
2/8/2020 8:00 AM 0.20 M M M M snow flurries in afternoon, not measurable
2/12/2020 8:00 AM M M M M M three day total : 2/10-2/12 {EDIT: Observer reported 0.76 for new precip but indicated in the notes that this was a multi-day report instead of a 24 hour report. Changed report of 0.76 to NA and entered a multi-day report. Submission Time Before EDIT: 2/12/2020 5:19 PM CoCoSTAFF DNT}
2/13/2020 8:00 AM 0.27 M M M M
2/26/2020 8:00 AM 0.20 M M M M
2/27/2020 7:00 AM 0.77 M M M M
3/3/2020 8:00 AM 0.07 M M M M
3/4/2020 8:00 AM 0.32 M M M M
3/7/2020 7:00 AM 0.40 M M M M
3/12/2020 7:00 AM 0.04 M M M M
3/13/2020 7:00 AM 0.32 M M M M
3/19/2020 8:00 AM 0.89 M M M M brief heavy rain overnight
3/20/2020 8:00 AM 0.04 M M M M
3/23/2020 8:00 AM 0.12 M M M M light intermittent rain
3/24/2020 8:00 AM 0.71 M M M M
3/28/2020 8:00 AM 0.18 M M M M moderate rain
3/29/2020 8:00 AM 1.51 M M M M
3/30/2020 8:00 AM 0.03 M M M M
3/31/2020 8:00 AM 0.04 M M M M patchy drizzle
4/8/2020 8:00 AM 0.67 M M M M
4/10/2020 8:00 AM 0.06 M M M M
4/13/2020 8:30 AM 1.55 M M M M
4/14/2020 8:00 AM 0.83 M M M M
4/15/2020 8:00 AM 0.08 M M M M
4/18/2020 8:00 AM 0.08 M M M M
4/23/2020 8:00 AM 0.17 M M M M
4/24/2020 8:00 AM 0.75 M M M M light to occasionally moderate rain
4/25/2020 8:00 AM 0.23 M M M M
4/26/2020 8:00 AM 0.26 M M M M
4/27/2020 8:00 AM 0.24 M M M M
4/28/2020 8:00 AM 0.02 M M M M
5/1/2020 8:00 AM 1.27 M M M M
5/3/2020 8:00 AM 0.09 M M M M
5/7/2020 8:00 AM 0.22 M M M M
5/9/2020 8:00 AM 0.47 M M M M
5/11/2020 8:00 AM 0.09 M M M M
5/15/2020 7:00 AM 0.02 M M M M
5/23/2020 8:00 AM 0.85 M M M M slow clearing from the west
5/24/2020 8:00 AM 0.09 M M M M
5/28/2020 8:00 AM 0.06 M M M M intermittent light rain
5/29/2020 8:00 AM 0.04 M M M M
6/4/2020 8:00 AM 1.42 M M M M
6/5/2020 8:00 AM 0.46 M M M M
6/6/2020 8:00 AM 0.74 M M M M
6/11/2020 8:00 AM 0.32 M M M M
6/12/2020 8:00 AM 0.07 M M M M
6/18/2020 8:00 AM 0.06 M M M M
6/20/2020 8:00 AM 0.06 M M M M
6/26/2020 8:00 AM 0.35 M M M M
6/27/2020 9:00 AM 0.10 M M M M clearing
6/29/2020 8:00 AM 0.08 M M M M
7/2/2020 8:00 AM 0.06 M M M M
7/4/2020 8:00 AM 0.04 M M M M
7/7/2020 8:00 AM 0.78 M M M M
7/11/2020 8:00 AM 2.80 M M M M
7/13/2020 8:00 AM 0.07 M M M M
7/23/2020 8:00 AM 0.30 M M M M
7/24/2020 8:00 AM 0.40 M M M M
8/2/2020 7:00 AM 0.04 M M M M
8/4/2020 8:00 AM 0.83 M M M M Moderate to briefly heavy rains
8/5/2020 7:00 AM 4.49 M M M M Minor wind damage. Major flooding. Storm total 5.32
8/7/2020 8:00 AM 0.10 M M M M occasional drizzle
8/8/2020 8:00 AM 1.51 M M M M Brief very heavy rains
8/13/2020 8:00 AM 1.05 M M M M intense rainfall in less than 30 minutes
8/16/2020 7:00 AM 0.35 M M M M
8/17/2020 8:00 AM 0.17 M M M M
8/18/2020 8:00 AM 0.04 M M M M
8/20/2020 8:00 AM 0.04 M M M M
8/24/2020 7:00 AM 0.20 M M M M
8/29/2020 8:00 AM 0.60 M M M M
8/30/2020 7:00 AM 0.16 M M M M
9/1/2020 8:00 AM 0.12 M M M M
9/3/2020 7:00 AM 0.07 M M M M
9/4/2020 8:00 AM 0.15 M M M M
9/10/2020 7:00 AM 0.13 M M M M drizzle
9/11/2020 8:00 AM 0.33 M M M M
9/26/2020 9:00 AM 0.68 M M M M
9/27/2020 7:00 AM 0.11 M M M M
9/28/2020 7:00 AM 0.17 M M M M
9/30/2020 8:00 AM 1.53 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
2/10/2020 2/12/2020 8:00 AM 3 0.76 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