Station Overview Station Location
Station Number MD-MG-18 Latitude 39.092094
Station Name Colesville 1.7 W Longitude -77.038549
County Montgomery Elevation (ft) 361



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 3.51 2.99 25 2.99 25 0.00 0 0 10 2 0.0 0 0
Nov 17 3.54 2.31 27 2.31 27 0.00 0 0 8 1 0.0 0 0
Dec 17 3.25 0.93 31 0.93 31 0.00 0 0 10 3 3.7 3 3
Jan 18 3.00 1.30 31 0.42 19 0.88 12 1 5 2 1.4 2 3
Feb 18 2.85 5.04 28 5.04 28 0.00 0 0 18 0 2.3 1 1
March 18 3.82 2.09 30 2.09 30 0.00 0 0 9 7 6.0 4 3
April 18 3.39 3.91 17 3.91 17 0.00 0 0 11 1 0.0 0 0
May 18 4.25 5.99 29 5.99 29 0.00 0 0 15 1 0.0 0 0
June 18 3.96 4.49 21 3.93 16 0.56 5 1 10 0 0.0 0 0
July 18 4.02 10.06 31 10.06 31 0.00 0 0 12 0 0.0 0 0
Aug 18 3.21 4.25 31 4.25 31 0.00 0 0 10 2 0.0 0 0
Sept 18 4.05 11.21 27 11.21 27 0.00 0 0 19 0 0.0 0 0
Water Year Totals: 42.85" 54.57" 328 days 53.13" 311 1.44" 17 days 2 137 days 19 days 13.4" 10 days 10 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
10/2/2017
10/3/2017
10/4/2017 0.00
10/5/2017
10/6/2017
10/7/2017
10/8/2017 0.01
10/9/2017 0.59
10/10/2017 0.30
10/11/2017 0.00
10/12/2017 0.59
10/13/2017 T
10/14/2017 0.02
10/15/2017 0.01
10/16/2017 0.12
10/17/2017 0.00
10/18/2017 0.00
10/19/2017 0.00
10/20/2017 0.00
10/21/2017 0.00
10/22/2017 0.00
10/23/2017 T
10/24/2017 0.21
10/25/2017 0.00
10/26/2017 0.00
10/27/2017 0.00
10/28/2017 0.00
10/29/2017 0.09
10/30/2017 1.05
10/31/2017 0.00
11/1/2017 0.00
11/2/2017 0.00
11/3/2017 0.00
11/4/2017 0.00
11/5/2017 0.58
11/6/2017 0.03
11/7/2017 0.11
11/8/2017 1.11
11/9/2017 T
11/10/2017 0.06
11/11/2017 0.00
11/12/2017 0.00
11/13/2017 0.16
11/14/2017 0.00
11/15/2017 0.00
11/16/2017 0.00
11/17/2017 0.00
11/18/2017
11/19/2017 0.25
11/20/2017
11/21/2017
11/22/2017 0.01
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 0.06
12/4/2017 0.01
12/5/2017 0.00
12/6/2017 0.13
12/7/2017 0.00
12/8/2017 0.00
12/9/2017 0.00
12/10/2017 0.20
12/11/2017 0.00
12/12/2017 0.00
12/13/2017 0.00
12/14/2017 T
12/15/2017 0.00
12/16/2017 0.04
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 0.06
12/24/2017 0.32
12/25/2017 0.03
12/26/2017 0.00
12/27/2017 0.00
12/28/2017 T
12/29/2017 0.00
12/30/2017 0.06
12/31/2017 T
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 **
1/6/2018 **
1/7/2018 **
1/8/2018 **
1/9/2018 **
1/10/2018 **
1/11/2018 **
1/12/2018 **
1/13/2018 **
1/14/2018 **
1/15/2018 **
1/16/2018 0.88
1/17/2018 0.09
1/18/2018 0.00
1/19/2018 0.00
1/20/2018 0.00
1/21/2018 0.00
1/22/2018 0.00
1/23/2018 0.07
1/24/2018 0.00
1/25/2018 T
1/26/2018 0.00
1/27/2018 0.00
1/28/2018 0.12
1/29/2018 0.10
1/30/2018 T
1/31/2018 0.00
2/1/2018 0.00
2/2/2018 0.10
2/3/2018 0.00
2/4/2018 0.00
2/5/2018 1.17
2/6/2018 0.00
2/7/2018 0.02
2/8/2018 0.44
2/9/2018 0.00
2/10/2018 0.00
2/11/2018 1.29
2/12/2018 0.27
2/13/2018 0.07
2/14/2018 0.01
2/15/2018 0.04
2/16/2018 0.17
2/17/2018 0.03
2/18/2018 0.52
2/19/2018 0.01
2/20/2018 0.01
2/21/2018 0.00
2/22/2018 0.00
2/23/2018 0.39
2/24/2018 0.06
2/25/2018 0.29
2/26/2018 0.15
2/27/2018 0.00
2/28/2018 0.00
3/1/2018
3/2/2018 0.29
3/3/2018 T
3/4/2018 0.00
3/5/2018 0.00
3/6/2018 0.00
3/7/2018 0.28
3/8/2018 0.01
3/9/2018 T
3/10/2018 0.00
3/11/2018 0.00
3/12/2018 0.00
3/13/2018 0.01
3/14/2018 0.00
3/15/2018 T
3/16/2018 0.00
3/17/2018 T
3/18/2018 T
3/19/2018 0.00
3/20/2018 0.04
3/21/2018 0.84
3/22/2018 0.50
3/23/2018 0.00
3/24/2018 0.00
3/25/2018 0.00
3/26/2018 T
3/27/2018 0.00
3/28/2018 T
3/29/2018 0.07
3/30/2018 0.00
3/31/2018 0.05
Day of YearDaily PrcpMultiday Prcp
4/1/2018 0.00
4/2/2018 0.13
4/3/2018 0.01
4/4/2018 0.04
4/5/2018 0.07
4/6/2018 0.00
4/7/2018 0.00
4/8/2018 0.00
4/9/2018 0.00
4/10/2018 0.01
4/11/2018
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018 2.12
4/17/2018 0.08
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018 0.68
4/26/2018 0.03
4/27/2018 0.71
4/28/2018 0.03
4/29/2018 T
4/30/2018
5/1/2018 0.00
5/2/2018 0.00
5/3/2018 0.00
5/4/2018 0.00
5/5/2018 0.00
5/6/2018 0.07
5/7/2018 0.03
5/8/2018 0.00
5/9/2018 0.00
5/10/2018 0.00
5/11/2018 0.02
5/12/2018
5/13/2018 0.22
5/14/2018 0.11
5/15/2018 0.39
5/16/2018 1.09
5/17/2018 0.75
5/18/2018 0.82
5/19/2018 1.29
5/20/2018 0.18
5/21/2018 0.00
5/22/2018 0.00
5/23/2018 0.85
5/24/2018 0.00
5/25/2018 0.00
5/26/2018
5/27/2018 0.02
5/28/2018 0.01
5/29/2018 T
5/30/2018 0.00
5/31/2018 0.14
6/1/2018 0.48
6/2/2018 0.02
6/3/2018 0.27
6/4/2018 2.02
6/5/2018 0.00
6/6/2018 0.00
6/7/2018 0.00
6/8/2018
6/9/2018 0.00
6/10/2018 0.02
6/11/2018 0.71
6/12/2018 0.04
6/13/2018 0.00
6/14/2018 0.00
6/15/2018
6/16/2018
6/17/2018
6/18/2018
6/19/2018
6/20/2018 0.15
6/21/2018 0.21
6/22/2018 **
6/23/2018 **
6/24/2018 **
6/25/2018 **
6/26/2018 0.56
6/27/2018
6/28/2018 0.01
6/29/2018
6/30/2018
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.00
7/2/2018 0.00
7/3/2018 0.00
7/4/2018 0.35
7/5/2018 0.00
7/6/2018 0.01
7/7/2018 0.00
7/8/2018 0.00
7/9/2018 0.00
7/10/2018 0.00
7/11/2018 0.00
7/12/2018 0.00
7/13/2018 0.00
7/14/2018 0.00
7/15/2018 0.00
7/16/2018 0.01
7/17/2018 0.21
7/18/2018 0.84
7/19/2018 0.00
7/20/2018 0.00
7/21/2018 0.00
7/22/2018 4.14
7/23/2018 2.08
7/24/2018 0.38
7/25/2018 0.45
7/26/2018 1.21
7/27/2018 0.00
7/28/2018 0.06
7/29/2018 0.00
7/30/2018 0.00
7/31/2018 0.32
8/1/2018 1.13
8/2/2018 0.55
8/3/2018 0.17
8/4/2018 0.50
8/5/2018 0.00
8/6/2018 0.00
8/7/2018 0.00
8/8/2018 0.00
8/9/2018 0.00
8/10/2018 0.00
8/11/2018 0.00
8/12/2018 0.00
8/13/2018 0.12
8/14/2018 0.13
8/15/2018 0.00
8/16/2018 0.00
8/17/2018 0.00
8/18/2018 0.29
8/19/2018 0.00
8/20/2018 T
8/21/2018 0.01
8/22/2018 1.27
8/23/2018 T
8/24/2018 0.00
8/25/2018 0.00
8/26/2018 0.00
8/27/2018 0.00
8/28/2018 0.00
8/29/2018 0.00
8/30/2018 0.00
8/31/2018 0.08
9/1/2018 0.86
9/2/2018 0.67
9/3/2018 0.00
9/4/2018 0.00
9/5/2018 0.00
9/6/2018 0.00
9/7/2018 0.24
9/8/2018 0.92
9/9/2018 0.95
9/10/2018 0.92
9/11/2018 0.08
9/12/2018 0.01
9/13/2018 0.50
9/14/2018 0.01
9/15/2018 0.00
9/16/2018 0.00
9/17/2018 0.00
9/18/2018 2.18
9/19/2018 0.11
9/20/2018
9/21/2018
9/22/2018 0.30
9/23/2018 0.07
9/24/2018 1.14
9/25/2018 0.44
9/26/2018 0.01
9/27/2018 0.37
9/28/2018 1.43
9/29/2018 0.00
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/4/2017 7:00 AM 0.00 0.0 M M M
10/8/2017 8:30 AM 0.01 0.0 M M M Light drizzle at obs time. Beginning today, and through the cool season (May 1) will report snow in addition to precipitation amounts.
10/9/2017 7:30 AM 0.59 0.0 M M M Moderate rain at obs time. .03 rain on the 8th with the remainder in the early AM hours.
10/10/2017 7:00 AM 0.30 0.0 M M M Rain yesterday morning (10/9). Note: I had a late obs time yesterday morning in moderate rain, so note yesterdays report to get the full storm total.
10/11/2017 7:00 AM 0.00 0.0 M M M
10/12/2017 7:00 AM 0.59 0.0 M M M Light rain began around 5PM, moderate rain around midnight (.33 in calendar day 10/11) .26 additional after midnight.
10/13/2017 7:00 AM T 0.0 M M M Drizzle, but no measurable rain.
10/14/2017 7:00 AM 0.02 0.0 M M M Drizzle 6-9PM yesterday (10/13)
10/15/2017 8:00 AM 0.01 0.0 M M M Drizzle or light rain overnight
10/16/2017 7:00 AM 0.12 0.0 M M M Rain in the early AM hours.
10/17/2017 7:00 AM 0.00 0.0 M M M
10/18/2017 7:00 AM 0.00 0.0 M M M
10/19/2017 7:00 AM 0.00 0.0 M M M
10/20/2017 7:00 AM 0.00 0.0 M M M
10/21/2017 7:00 AM 0.00 0.0 M M M
10/22/2017 7:00 AM 0.00 0.0 M M M
10/23/2017 7:30 AM T 0.0 M M M Trace rain early AM
10/24/2017 7:00 AM 0.21 0.0 M M M Light rain began last night around 10PM, continued through a good part of the night.
10/25/2017 7:00 AM 0.00 0.0 M M M
10/26/2017 7:00 AM 0.00 0.0 M M M
10/27/2017 7:00 AM 0.00 0.0 M M M
10/28/2017 7:00 AM 0.00 0.0 M M M
10/29/2017 7:15 AM 0.09 0.0 M M M Rain started sometime after midnight. Very light rain was observed at obs time.
10/30/2017 7:00 AM 1.05 0.0 M M M Rain Began after cold front passes at 3:30 PM (10/29) and continued through 4 AM. Heaviest from 6-10PM (.75 in 4 hours).
10/31/2017 7:00 AM 0.00 0.0 M M M
11/1/2017 7:00 AM 0.00 0.0 M M M
11/2/2017 7:00 AM 0.00 0.0 M M M
11/3/2017 7:00 AM 0.00 0.0 M M M
11/4/2017 7:00 AM 0.00 0.0 M M M
11/5/2017 7:00 AM 0.58 0.0 M M M Very light drizzle at obs time. Note change to Eastern Standard Time. Rain began last night around 7PM, quite heavy initially. .48 by midnight and .10 overnight.
11/6/2017 7:00 AM 0.03 0.0 M M M Drizzle rain off and on yesterday. (11/5)
11/7/2017 7:00 AM 0.11 0.0 M M M Rain Yesterday Evening around 6PM. (11/6)
11/8/2017 7:00 AM 1.11 0.0 M M M Moderate and heavy rain yesterday from around 11AM-11PM. (11/7)
11/9/2017 7:00 AM T 0.0 M M M drizzle at observation time
11/10/2017 7:00 AM 0.06 0.0 M M M Rain and drizzle yesterday morning and evening (11/9) clearing around midnight.
11/11/2017 7:00 AM 0.00 0.0 M M M
11/12/2017 7:00 AM 0.00 0.0 M M M
11/13/2017 7:00 AM 0.16 0.0 M M M Rain in the early AM hours.
11/14/2017 7:00 AM 0.00 0.0 M M M
11/15/2017 7:00 AM 0.00 0.0 M M M
11/16/2017 7:00 AM 0.00 0.0 M M M
11/17/2017 7:00 AM 0.00 0.0 M M M
11/19/2017 8:00 AM 0.25 0.0 M 0.0 M Rain began yesterday (11/18) at around 3PM continues to at least 2AM.
11/22/2017 7:00 AM 0.01 0.0 M M M Rain Shower sometime just prior to obs time.
11/23/2017 7:00 AM 0.00 0.0 M M M
11/24/2017 7:00 AM 0.00 0.0 M M M
11/25/2017 7:00 AM 0.00 0.0 M M M
11/26/2017 7:00 AM 0.00 0.0 M M M
11/27/2017 7:00 AM 0.00 0.0 M M M
11/28/2017 7:00 AM 0.00 0.0 M M M
11/29/2017 7:00 AM 0.00 0.0 M M M
11/30/2017 7:00 AM 0.00 0.0 M M M
12/1/2017 7:00 AM 0.02 0.0 M 0.0 M
12/2/2017 7:00 AM 0.00 0.0 M M M
12/3/2017 7:20 AM 0.06 0.0 M 0.0 M Light rain and 38 degrees F. at observation time.
12/4/2017 7:00 AM 0.01 0.0 M M M Rain from yesterday Morning.
12/5/2017 7:00 AM 0.00 0.0 M M M
12/6/2017 7:00 AM 0.13 0.0 M 0.0 M Rain yesterday evening.
12/7/2017 7:00 AM 0.00 0.0 M M M
12/8/2017 7:00 AM 0.00 0.0 M M M
12/9/2017 7:00 AM 0.00 0.0 M M M
12/10/2017 7:00 AM 0.20 2.8 M 2.5 M Light Snow from 9AM-9PM Yesterday. (12/9) .
12/11/2017 7:00 AM 0.00 0.0 M 1.0 M
12/12/2017 7:00 AM 0.00 0.0 M T M
12/13/2017 7:00 AM 0.00 0.0 M 0.0 M
12/14/2017 7:00 AM T T M 0.0 M Snow Flurry around 8PM (12/13)
12/15/2017 7:00 AM 0.00 0.0 M M M
12/16/2017 7:00 AM 0.04 0.3 M T M .3 inch of snow grains, sometimes mixed with sleet.
12/17/2017 7:00 AM 0.00 0.0 M 0.0 M
12/18/2017 7:00 AM 0.00 0.0 M 0.0 M
12/19/2017 7:00 AM 0.00 0.0 M 0.0 M
12/20/2017 7:00 AM 0.00 0.0 M M M
12/21/2017 7:00 AM 0.00 0.0 M M M
12/22/2017 7:00 AM 0.00 0.0 M M M
12/23/2017 7:00 AM 0.06 0.0 M 0.0 M A few drops at 7PM yesterday(12/22) .06 overnight.
12/24/2017 7:00 AM 0.32 0.0 M 0.0 M Off and on light rain yesterday (12/23) with occasional heavier showers in the late morning and early evening.
12/25/2017 7:00 AM 0.03 0.0 M 0.0 M Drizzle from 6PM (12/24) -sometime after midnight.
12/26/2017 7:00 AM 0.00 0.0 M M M
12/27/2017 7:00 AM 0.00 0.0 M M M
12/28/2017 7:00 AM T T M 0.0 M A light snow shower 12/27 around 11 AM.
12/29/2017 7:00 AM 0.00 0.0 M M M
12/30/2017 7:00 AM 0.06 0.6 M 0.5 M In spite of cold temps measured ratio of snow to precipitation amount is only 10-1. Precip from gauge catch. Snow occurred overnight.
12/31/2017 7:00 AM T T M T M very light snow continued a bit after obs time yesterday morning (12/30)
1/1/2018 7:00 AM 0.00 0.0 M M M
1/2/2018 7:00 AM 0.00 0.0 M M M
1/3/2018 7:00 AM 0.00 0.0 M M M
1/4/2018 7:00 AM 0.04 0.5 M 0.5 M Drifty dry snow. Nothing falling at obs time. Precip from gauge catch.
1/17/2018 7:00 AM 0.09 0.9 M 1.0 M Light Snow overnight. Precip measured from gauge catch.
1/18/2018 7:00 AM 0.00 0.0 M 0.5 M
1/19/2018 7:00 AM 0.00 0.0 M T M
1/20/2018 7:00 AM 0.00 0.0 M M M
1/21/2018 7:00 AM 0.00 0.0 M M M
1/22/2018 7:00 AM 0.00 0.0 M M M
1/23/2018 7:00 AM 0.07 0.0 M 0.0 M Early AM rain.
1/24/2018 7:00 AM 0.00 0.0 M 0.0 M
1/25/2018 7:00 AM T T M 0.0 M A Snow Flurry around 6PM yesterday (1/24)
1/26/2018 7:00 AM 0.00 0.0 M M M
1/27/2018 7:00 AM 0.00 0.0 M M M
1/28/2018 8:45 AM 0.12 0.0 M 0.0 M Rain began around midnight.
1/29/2018 7:00 AM 0.10 0.0 M 0.0 M Light rain most of the day yesterday (1/28). Ended around 4PM.
1/30/2018 7:00 AM T T M T M Very light snow at obs time. Some grainy snow on ground at places.
1/31/2018 7:00 AM 0.00 0.0 M M M
2/1/2018 7:00 AM 0.00 0.0 M M M
2/2/2018 7:00 AM 0.10 0.0 M 0.0 M Rain yesterday evening into early AM. No sign of any snowfall as cold air moved in when precipitation ended.
2/3/2018 7:00 AM 0.00 0.0 M M M
2/4/2018 7:00 AM 0.00 0.0 M M M
2/5/2018 7:00 AM 1.17 T M 0.0 M Precip began as snow, changed to sleet and freezing rain. Rain and freezing rain continued all day, seemingly alternating, Max temp 33, min temp 31. Trees were coated with about .1 inch. The ground was a bit too warm for ice to stick, although the sleet and snow traces stayed for most of the day. Precip ended around 8PM, followed by a ice-over of any standing water.
2/6/2018 7:00 AM 0.00 0.0 M M M
2/7/2018 7:30 AM 0.02 0.0 M 0.0 M Freezing Drizzle.
2/8/2018 7:00 AM 0.44 0.0 M 0.0 M Freezing rain changes to rain. Ends in the late afternoon.
2/9/2018 7:00 AM 0.00 0.0 M 0.0 M
2/10/2018 7:00 AM 0.00 0.0 M M M
2/11/2018 7:00 AM 1.29 0.0 M 0.0 M Rain for most of the last 24-hrs. Heavy fog overnight.
2/12/2018 7:00 AM 0.27 0.0 M 0.0 M Rain yesterday, mostly light. One heavy shower at 11:00 AM.
2/13/2018 7:00 AM 0.07 0.0 M 0.0 M Rain yesterday morning (2/12)
2/14/2018 7:00 AM 0.01 T M 0.0 M Rain Showers yesterday from around 3-5 PM... Some snow grains and sleet mixed in just after precipitation began.
2/15/2018 7:00 AM 0.04 0.0 M 0.0 M Rain began around 10PM last night.
2/16/2018 7:00 AM 0.17 0.0 M 0.0 M Nice warm spring rain showers sometime after midnight and not much before the 7AM observation time.
2/17/2018 7:00 AM 0.03 0.0 M 0.0 M Rain showers yesterday afternoon. (2/16).
2/18/2018 7:00 AM 0.52 2.3 M 1.5 M Precipitation began as snow grains at around 2PM. Then snow grains, snow, sleet, rain, fell yesterday afternoon, ending as a wet sleet with 2.3 inches of heavy wet stuff at around 7PM last night (2/17). Snow melting from underneath due to warm ground from the last few days of 60 degree weather.
2/19/2018 7:20 AM 0.01 0.0 M T M Rain began shortly before obs time.
2/20/2018 7:00 AM 0.01 0.0 M 0.0 M Some rain/drizzle early yesterday and perhaps in the afternoon (2/19).
2/21/2018 7:00 AM 0.00 0.0 M 0.0 M
2/22/2018 7:00 AM 0.00 0.0 M M M
2/23/2018 8:00 AM 0.39 0.0 M 0.0 M Occasional rain and drizzle begins yesterday morning and continues off and on throughout the remainder of the day (.11 on 2/22) and in the early AM (.28). Moderate rain shower just prior to 8AM.
2/24/2018 7:40 AM 0.06 0.0 M 0.0 M Rain yesterday morning, with drizzle off and on in the day and overnight. Note that obs times were late both this and yesterday morning. This will make precipitation lighter than surrounding stations that took 7AM obs because of moderate rain yesterday around 7AM. Only very light mist was observed around this morning's obs time.
2/25/2018 7:20 AM 0.29 0.0 M 0.0 M Rain and drizzle off and on throughout the past 24 hrs
2/26/2018 7:00 AM 0.15 0.0 M 0.0 M
2/27/2018 7:00 AM 0.00 0.0 M M M
2/28/2018 7:00 AM 0.00 0.0 M M M
3/2/2018 7:00 AM 0.29 T M 0.0 M Rain showers yesterday and overnight. Light snow at observation time.
3/3/2018 7:00 AM T T M 0.0 M Snow shower yesterday morning.
3/4/2018 7:00 AM 0.00 0.0 M M M
3/5/2018 7:00 AM 0.00 0.0 M M M
3/6/2018 7:00 AM 0.00 0.0 M M M
3/7/2018 7:00 AM 0.28 0.7 M 0.5 M Rain and snow mix began around 6 PM, changing to all snow. Snow is difficult to measure. On grassy surfaces snow is about .5 inch total, however on the snow board, which I cleared around 11PM, the total was closer to .9 inch. I compromised -- .9 would be the maximum amount from an overly eager snow board clearing standpoint. .5 is the minimum, I split and rounded toward the amount on grassy surfaces and gave .7. Precipitation from gauge catch.
3/8/2018 7:00 AM 0.01 T M M M Some snow/rain mix at observation time yesterday morning. Rain shower around 6PM.
3/9/2018 7:00 AM T T M M M Very light snow shower around 4PM.
3/10/2018 7:00 AM 0.00 0.0 M M M
3/11/2018 7:00 AM 0.00 0.0 M M M
3/12/2018 7:00 AM 0.00 0.0 M M M
3/13/2018 7:00 AM 0.01 0.2 M M M Light snow - 7PM-midnight.
3/14/2018 7:00 AM 0.00 0.0 M M M
3/15/2018 7:00 AM T T M M M A few snow flakes observed around 1PM 3/14.
3/16/2018 7:00 AM 0.00 0.0 M M M
3/17/2018 7:00 AM T T M 0.0 M A light snow shower around 8 AM yesterday (3/16)
3/18/2018 7:00 AM T T M 0.0 M Snow and Snow/rain mix for a few hours on the late morning and early afternoon of the 17th.
3/19/2018 7:00 AM 0.00 0.0 M M M
3/20/2018 7:00 AM 0.04 0.0 M 0.0 M Rain began around 6AM. Precip amount from Davis Weather station. Precip amounts from the 4-inch gauge taken at 8:30 agreed exactly with the Davis amount at that time, so no adjustments were made.
3/21/2018 7:00 AM 0.84 0.5 M T M Rain yesterday morning, changes to freezing rain and sleet by noon. Snow mixes in in the afternoon but changes back to sleet and ZR. .3 inches of sleet by Midnight last night. .2 inches of snow overnight. Big forecast bust perhaps as this mornings snow fails to materialize so far.
3/22/2018 7:00 AM 0.50 4.6 M 5.0 M Snow all day yesterday, ending around 6PM. Precip from gauge catch. Total snow 5.1 inches, - .3 inch sleet from 3/20, .2 inch prior to observation time yesterday, and 4.6 inches after obs time (3/21 7AM - 6PM). A few limbs down from heavy, wet snow that sticks to everything.
3/23/2018 7:00 AM 0.00 0.0 M 1.5 M
3/24/2018 7:00 AM 0.00 0.0 M M M
3/25/2018 7:00 AM 0.00 0.0 M M M
3/26/2018 7:00 AM T 0.0 M 0.0 M Rain Shower around 7PM (3/25)
3/27/2018 7:00 AM 0.00 0.0 M M M
3/28/2018 7:00 AM T 0.0 M 0.0 M
3/29/2018 7:00 AM 0.07 0.0 M 0.0 M Occasional light rain and showers yesterday and overnight.
3/30/2018 7:00 AM 0.00 0.0 M M M
3/31/2018 7:00 AM 0.05 0.0 M 0.0 M
4/1/2018 7:00 AM 0.00 0.0 M M M
4/2/2018 7:00 AM 0.13 0.0 M 0.0 M Rain prior to dawn, no evidence of any snow.
4/3/2018 7:00 AM 0.01 0.0 M 0.0 M
4/4/2018 7:00 AM 0.04 0.0 M 0.0 M Occasional light rain yesterday throughout the day. (4/3)
4/5/2018 7:00 AM 0.07 0.0 M 0.0 M Brief intense shower around 11:30 AM (4/4).
4/6/2018 7:00 AM 0.00 0.0 M M M
4/7/2018 7:00 AM 0.00 0.0 M M M
4/8/2018 7:00 AM 0.00 0.0 M M M
4/9/2018 7:00 AM 0.00 0.0 M M M
4/10/2018 7:00 AM 0.01 0.0 M 0.0 M Light rain and drizzle last night around 9PM. (4/9)
4/16/2018 7:00 AM 2.12 0.0 M 0.0 M Light rain and drizzle yesterday (.12 by 11PM 4/15). Heavy rain with occasional thunder overnight with 2.00 inches. Observation taken just prior to at 7AM as a new rain shower began.
4/17/2018 7:00 AM 0.08 0.0 M 0.0 M Rain showers shortly after observation time yesterday (4/16) and also in the afternoon.
4/25/2018 7:00 AM 0.68 0.0 M 0.0 M Rain starts yesterday afternoon and continues through the night. Drizzle at observation time.
4/26/2018 7:00 AM 0.03 0.0 M 0.0 M Showers yesterday. (4/25)
4/27/2018 7:20 AM 0.71 0.0 M 0.0 M Rain after midnight. Light rain at observation time.
4/28/2018 7:00 AM 0.03 0.0 M 0.0 M Rain 7-8AM yesterday morning. (4/27)
4/29/2018 7:00 AM T 0.0 M M M very light rain showers around yesterday around 5PM.
5/1/2018 7:00 AM 0.00 0.0 M M M
5/2/2018 7:00 AM 0.00 0.0 M M M
5/3/2018 7:00 AM 0.00 0.0 M M M
5/4/2018 7:00 AM 0.00 0.0 M M M
5/5/2018 7:00 AM 0.00 0.0 M M M
5/6/2018 7:00 AM 0.07 0.0 M M M Light rain showers off and on yesterday and overnight.
5/7/2018 7:00 AM 0.03 M M M M
5/8/2018 7:00 AM 0.00 0.0 M M M
5/9/2018 7:00 AM 0.00 0.0 M M M
5/10/2018 7:00 AM 0.00 0.0 M M M
5/11/2018 7:00 AM 0.02 0.0 M M M Rain Shower near sunset. Nice rainbow. Not much rain.
5/13/2018 7:00 AM 0.22 0.0 M M M Early morning thundershower.
5/14/2018 7:00 AM 0.11 0.0 M M M Light Rain 10-11 AM (5/13)
5/15/2018 7:00 AM 0.39 0.0 M M M Precipitation from Davis Station - adjusted for 3-day total from 4-inch gauge.
5/16/2018 7:00 AM 1.09 0.0 M M M Precipitation from Davis weather station adjusted for 3-day total (I was away). Thundershowers last night 8PM - Midnight. Heaviest rain with some thunder at around 10:30 (.84 in an hour.). Light rain 5-7AM on the 16th (.06)
5/17/2018 7:00 AM 0.75 0.0 M M M Heavy rain just prior to observation time. Light rain at obs time. .23 from 7A - 11PM yesterday.
5/18/2018 7:15 AM 0.82 0.0 M M M Rain and drizzle for the past 24-hrs. Light rain at observation time.
5/19/2018 7:00 AM 1.29 0.0 M M M Precipitation total from Davis Rain Gauge hourly amounts adjusted for multi day 4 inch rain gauge measurement
5/20/2018 7:00 AM 0.18 0.0 M M M Precipitation amount from Davis Weather station hourly amounts adjusted for multi-day 4-inch rain gauge total amount.
5/21/2018 7:00 AM 0.00 0.0 M M M
5/22/2018 7:00 AM 0.00 0.0 M M M
5/23/2018 7:00 AM 0.85 0.0 M M M Rain showers at around 9 - 10 AM (.37) Thunderstorm around 5:30 PM (.48) (5/22) .
5/24/2018 7:00 AM 0.00 0.0 M M M
5/25/2018 7:00 AM 0.00 0.0 M M M
5/27/2018 7:00 AM 0.02 0.0 M M M Rain in the late afternoon Thundershower mostly passed to the south.
5/28/2018 7:30 AM 0.01 0.0 M M M Thunder yesterday afternoon but only a trace of rain. Drizzle off and on in the evening and overnight. Drizzle at obs time.
5/29/2018 7:00 AM T 0.0 M M M Some drizzle yesterday morning (5/28).
5/30/2018 7:00 AM 0.00 0.0 M M M
5/31/2018 7:00 AM 0.14 0.0 M M M Light rain last evening into the morning hours.
6/1/2018 7:00 AM 0.48 0.0 M M M Thunderstorm yesterday around 7PM. (5/31)
6/2/2018 7:00 AM 0.02 0.0 M M M Light rain began around midnight and into early AM hours (6/2)
6/3/2018 7:30 AM 0.27 0.0 M M M Rain Last night (.07 by 10 PM 6/2) .20 overnight. Drizzle at observation time.
6/4/2018 7:00 AM 2.02 0.0 M M M Rain all day yesterday, ending around midnight.
6/5/2018 7:00 AM 0.00 0.0 M M M
6/6/2018 7:00 AM 0.00 0.0 M M M
6/7/2018 7:00 AM 0.00 0.0 M M M
6/9/2018 7:00 AM 0.00 0.0 M M M
6/10/2018 7:00 AM 0.02 0.0 M M M Hit or miss showers mostly missed. One light shower in the afternoon and some thunder around 6PM. (6/9)
6/11/2018 7:15 AM 0.71 0.0 M M M Rain overnight -- mostly after midnight. on 6/11
6/12/2018 7:00 AM 0.04 0.0 M M M Rain yesterday morning. (6/11)
6/13/2018 7:00 AM 0.00 0.0 M M M
6/14/2018 7:00 AM 0.00 0.0 M M M
6/20/2018 7:00 AM 0.15 0.0 M M M Thundershower yesterday 1PM (6/19)
6/21/2018 7:00 AM 0.21 0.0 M M M TRW around 7PM. (6/20)
6/28/2018 7:00 AM 0.01 0.0 M M M
7/1/2018 7:00 AM 0.00 0.0 M M M
7/2/2018 7:00 AM 0.00 0.0 M M M
7/3/2018 7:00 AM 0.00 0.0 M M M
7/4/2018 7:00 AM 0.35 0.0 M M M Airmass thunderstorm rescues us from heat (96 degree Max temp) temperatures. (5-6 PM 7/3).
7/5/2018 7:00 AM 0.00 0.0 M M M
7/6/2018 7:00 AM 0.01 0.0 M M M Rain sometime in the afternoon. Thunder to west in the evening around 7PM, with only a trace of rain.
7/7/2018 7:00 AM 0.00 0.0 M M M
7/8/2018 7:00 AM 0.00 0.0 M M M
7/9/2018 7:00 AM 0.00 0.0 M M M
7/10/2018 7:00 AM 0.00 0.0 M M M
7/11/2018 7:00 AM 0.00 0.0 M M M
7/12/2018 7:00 AM 0.00 0.0 M M M
7/13/2018 7:00 AM 0.00 0.0 M M M
7/14/2018 7:00 AM 0.00 0.0 M M M
7/15/2018 7:00 AM 0.00 0.0 M M M
7/16/2018 7:00 AM 0.01 0.0 M M M Afternoon thundershower around 3PM.
7/17/2018 7:00 AM 0.21 0.0 M M M An afternoon thundershower yesterday afternoon (7/16)
7/18/2018 7:00 AM 0.84 0.0 M M M Thundershower around 2PM (7/17).
7/19/2018 7:00 AM 0.00 0.0 M M M
7/20/2018 7:00 AM 0.00 0.0 M M M
7/21/2018 7:00 AM 0.00 0.0 M M M
7/22/2018 7:00 AM 4.14 0.0 M M M Steady rain from around 8:30 AM yesterday to around midnight(7/21). .01 additional after midnight.
7/23/2018 7:00 AM 2.08 0.0 M M M Thundershowers pass through, around 2 PM, and throughout the evening from around 8PM - 1AM.
7/24/2018 7:00 AM 0.38 0.0 M M M Thunderstorm around 8AM 7/23) (.09). Trace rain in the day. .29 overnight.
7/25/2018 7:00 AM 0.45 0.0 M M M Showers off and on in the last 24-hrs. Heaviest around 5PM (7/24)
7/26/2018 7:00 AM 1.21 0.0 M M M Thunderstorm around 6-8 PM (7/25). Rain lasted until midnight.
7/27/2018 7:00 AM 0.00 0.0 M M M
7/28/2018 7:00 AM 0.06 0.0 M M M Thunder with some light rain around 7PM.
7/29/2018 7:00 AM 0.00 0.0 M M M
7/30/2018 7:00 AM 0.00 0.0 M M M
7/31/2018 7:00 AM 0.32 0.0 M M M Showers yesterday around 6PM, (.29) with an additional .03 overnight, likely not long before obs time.
8/1/2018 7:00 AM 1.13 0.0 M M M Heavy rain around 3AM. Slept through it and was surprised to find such a high total in the gauge. The Davis wx station recorded 1.02 in the 45 minutes ending at 3:15 AM.
8/2/2018 7:00 AM 0.55 0.0 M M M Thundershower starts around 11PM (8/1), .40 before midnight, .15 after midnight (8/2)
8/3/2018 7:00 AM 0.17 0.0 M M M Thundershower yesterday afternoon. (8/2)
8/4/2018 7:00 AM 0.50 0.0 M M M Showers yesterday evening (.45 as of midnight 8/3) .05 after midnight.
8/5/2018 7:00 AM 0.00 0.0 M M M
8/6/2018 7:00 AM 0.00 0.0 M M M
8/7/2018 7:00 AM 0.00 0.0 M M M Thunder but no rain yesterday afternoon.
8/8/2018 7:00 AM 0.00 0.0 M M M Thunder but no rain yesterday around 6PM.
8/9/2018 7:00 AM 0.00 0.0 M M M Third day in a row of thunder but no rain.
8/10/2018 7:00 AM 0.00 0.0 M M M
8/11/2018 7:00 AM 0.00 0.0 M M M
8/12/2018 7:00 AM 0.00 0.0 M M M
8/13/2018 7:00 AM 0.12 0.0 M M M Thundershower around 4PM (8/12)
8/14/2018 6:50 AM 0.13 0.0 M M M Thundershower around 5 PM (8/13)
8/15/2018 7:00 AM 0.00 0.0 M M M
8/16/2018 7:00 AM 0.00 0.0 M M M
8/17/2018 7:00 AM 0.00 0.0 M M M
8/18/2018 7:00 AM 0.29 0.0 M M M Thundershower yesterday around 6 PM (.01 - 8/17) and overnight at around 3AM (.28)
8/19/2018 7:00 AM 0.00 0.0 M M M
8/20/2018 7:00 AM T 0.0 M M M Evidence of some light rain or drizzle prior to obs time.
8/21/2018 7:00 AM 0.01 0.0 M M M Drizzle last night around 10PM (Trace calendar day 8/20). Rain shower in evidence prior to morning observation. (.01)
8/22/2018 7:00 AM 1.27 0.0 M M M Showers and thundershowers off and on throughout the day. Heaviest rain around 1 PM and again around 9PM (8/21).
8/23/2018 7:00 AM T 0.0 M M M Some rain drops around noon (8/22)
8/24/2018 7:00 AM 0.00 0.0 M M M
8/25/2018 7:00 AM 0.00 0.0 M M M
8/26/2018 7:00 AM 0.00 0.0 M M M
8/27/2018 7:00 AM 0.00 0.0 M M M
8/28/2018 7:00 AM 0.00 0.0 M M M
8/29/2018 7:00 AM 0.00 0.0 M M M
8/30/2018 7:00 AM 0.00 0.0 M M M
8/31/2018 7:00 AM 0.08 0.0 M M M Rain overnight (8/31).
9/1/2018 7:00 AM 0.86 0.0 M M M Thundershower in the afternoon (8/31) . Thunder south in the evening, no rain after about 4PM here
9/2/2018 7:00 AM 0.67 0.0 M M M Heavy rain around 10:30.... Not sure whether any thunder was heard, but lightning was observed to the south in DC (where I was at the time).
9/3/2018 7:00 AM 0.00 0.0 M M M
9/4/2018 7:00 AM 0.00 0.0 M M M
9/5/2018 7:00 AM 0.00 0.0 M M M
9/6/2018 7:00 AM 0.00 0.0 M M M
9/7/2018 7:00 AM 0.24 M M M M Total from Davis Weather station amount
9/8/2018 7:00 AM 0.92 M M M M Total from Davis wx station amount
9/9/2018 7:00 AM 0.95 M M M M Total from Davis weather station amount.
9/10/2018 7:00 AM 0.92 M M M M Total from Davis recording weather station.
9/11/2018 7:00 AM 0.08 M M M M Total from Davis weather station.
9/12/2018 7:00 AM 0.01 M M M M Daily amount from davis weather station.
9/13/2018 7:00 AM 0.50 M M M M Daily amount from Davis weather station.
9/14/2018 7:00 AM 0.01 M M M M Daily amount from Davis weather station.
9/15/2018 7:00 AM 0.00 0.0 M M M
9/16/2018 7:00 AM 0.00 0.0 M M M
9/17/2018 7:00 AM 0.00 0.0 M M M
9/18/2018 7:00 AM 2.18 0.0 M M M I was on vacation from 9/6-9/17 at 1830 local. Recorded 4.74 at that time from the 4 inch rain gauge. I have a Davis recording station and it's total was 4.75 in the same period. Accordingly, I've used the rain amount reported on the 17th, together with the 1.06 additional precipitation (4-inch gauge total) in the rain and thundershowers overnight to arrive at the daily total. An adjustment of .01 was applied on this day to favor the 4 inch rain gauge amounts over the automated tipping bucket station total recorded while on vacation.
9/19/2018 7:00 AM 0.11 0.0 M M M Occasional showers yesterday through about 2PM. (9/18)
9/22/2018 8:00 AM 0.30 0.0 M M M Early AM rain shower.
9/23/2018 7:20 AM 0.07 0.0 M M M Light rain began after midnight. Light rain at observation time.
9/24/2018 7:00 AM 1.14 0.0 M M M Rain and drizzle for the last 24-hrs. Very light drizzle at ohs time.
9/25/2018 7:00 AM 0.44 0.0 M M M From Davis weather station recording rain gauge calibrated to 4 inch rain gauge total (9/24-9/27)
9/26/2018 7:00 AM 0.01 M M M M From Davis weather station precipitation record
9/27/2018 7:00 AM 0.37 0.0 M M M TRW 6-8PM 9/26
9/28/2018 7:00 AM 1.43 0.0 M M M Yet more rain.
9/29/2018 7:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
1/5/2018 1/16/2018 7:00 AM 12 0.88 M M
6/22/2018 6/26/2018 7:00 AM 5 0.56 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