Station Overview Station Location
Station Number CA-CC-8 Latitude 38.05446
Station Name Crockett 0.7 WNW Longitude -122.232718
County Contra Costa Elevation (ft) 213



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 10 1.05 0.83 31 0.83 31 0.00 0 0 7 0 0.0 0 0
Nov 10 2.65 1.95 30 1.95 30 0.00 0 0 6 0 0.0 0 0
Dec 10 3.86 4.26 26 4.26 26 0.00 0 0 16 2 0.0 0 0
Jan 11 4.07 1.26 31 1.26 31 0.00 0 0 8 3 0.0 0 0
Feb 11 3.93 0.00 2 0.00 2 0.00 0 0 0 1 0.0 0 0
March 11 2.90 5.85 23 5.85 23 0.00 0 0 8 0 0.0 0 0
April 11 1.29 0.03 12 0.03 12 0.00 0 0 2 0 0.0 0 0
May 11 0.58 0.19 2 0.19 2 0.00 0 0 1 1 0.0 0 0
June 11 0.14 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 11 0.01 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 11 0.04 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 11 0.15 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 20.67" 14.37" 157 days 14.37" 157 0.00" 0 days 0 48 days 7 days 0.0" 0 days 0 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
10/1/2010 0.00
10/2/2010 0.00
10/3/2010 0.00
10/4/2010 0.00
10/5/2010 0.00
10/6/2010 0.00
10/7/2010 0.00
10/8/2010 0.00
10/9/2010 0.00
10/10/2010 0.00
10/11/2010 0.00
10/12/2010 0.00
10/13/2010 0.00
10/14/2010 0.00
10/15/2010 0.00
10/16/2010 0.00
10/17/2010 0.04
10/18/2010 0.10
10/19/2010 0.00
10/20/2010 0.00
10/21/2010 0.00
10/22/2010 0.16
10/23/2010 0.06
10/24/2010 0.18
10/25/2010 0.00
10/26/2010 0.00
10/27/2010 0.00
10/28/2010 0.00
10/29/2010 0.16
10/30/2010 0.13
10/31/2010 0.00
11/1/2010 0.00
11/2/2010 0.00
11/3/2010 0.00
11/4/2010 0.00
11/5/2010 0.00
11/6/2010 0.00
11/7/2010 0.28
11/8/2010 0.44
11/9/2010 0.00
11/10/2010 0.00
11/11/2010 0.00
11/12/2010 0.00
11/13/2010 0.00
11/14/2010 0.00
11/15/2010 0.00
11/16/2010 0.00
11/17/2010 0.00
11/18/2010 0.00
11/19/2010 0.00
11/20/2010 0.51
11/21/2010 0.53
11/22/2010 0.03
11/23/2010 0.00
11/24/2010 0.00
11/25/2010 0.00
11/26/2010 0.00
11/27/2010 0.16
11/28/2010 0.00
11/29/2010 0.00
11/30/2010 0.00
12/1/2010 0.02
12/2/2010 0.00
12/3/2010 0.19
12/4/2010 0.00
12/5/2010
12/6/2010
12/7/2010
12/8/2010 0.12
12/9/2010 0.34
12/10/2010 0.02
12/11/2010
12/12/2010
12/13/2010 T
12/14/2010 0.02
12/15/2010 T
12/16/2010 0.10
12/17/2010 0.08
12/18/2010 0.41
12/19/2010 0.73
12/20/2010 0.36
12/21/2010 0.00
12/22/2010 0.30
12/23/2010 0.02
12/24/2010 0.00
12/25/2010 0.00
12/26/2010 0.76
12/27/2010 0.04
12/28/2010 0.00
12/29/2010 0.75
12/30/2010 0.00
12/31/2010 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2011 0.23
1/2/2011 0.24
1/3/2011 0.02
1/4/2011 0.00
1/5/2011 0.00
1/6/2011 T
1/7/2011 0.02
1/8/2011 T
1/9/2011 0.00
1/10/2011 0.00
1/11/2011 0.00
1/12/2011 0.02
1/13/2011 T
1/14/2011 0.08
1/15/2011 0.00
1/16/2011 0.00
1/17/2011 0.00
1/18/2011 0.00
1/19/2011 0.00
1/20/2011 0.00
1/21/2011 0.00
1/22/2011 0.00
1/23/2011 0.00
1/24/2011 0.00
1/25/2011 0.00
1/26/2011 0.00
1/27/2011 0.00
1/28/2011 0.00
1/29/2011 0.00
1/30/2011 0.51
1/31/2011 0.14
2/1/2011 T
2/2/2011
2/3/2011
2/4/2011
2/5/2011
2/6/2011
2/7/2011
2/8/2011
2/9/2011
2/10/2011
2/11/2011
2/12/2011
2/13/2011
2/14/2011
2/15/2011
2/16/2011
2/17/2011
2/18/2011
2/19/2011
2/20/2011
2/21/2011
2/22/2011
2/23/2011
2/24/2011
2/25/2011
2/26/2011
2/27/2011
2/28/2011 0.00
3/1/2011 0.00
3/2/2011 0.15
3/3/2011 0.00
3/4/2011 0.00
3/5/2011 0.00
3/6/2011 0.00
3/7/2011 0.00
3/8/2011 0.00
3/9/2011 0.00
3/10/2011 0.00
3/11/2011 0.00
3/12/2011
3/13/2011 0.00
3/14/2011 0.30
3/15/2011 0.00
3/16/2011 0.00
3/17/2011 0.00
3/18/2011 0.08
3/19/2011 1.46
3/20/2011 0.95
3/21/2011
3/22/2011 0.00
3/23/2011
3/24/2011 0.99
3/25/2011 1.58
3/26/2011 0.34
3/27/2011
3/28/2011
3/29/2011
3/30/2011
3/31/2011
Day of YearDaily PrcpMultiday Prcp
4/1/2011 0.00
4/2/2011 0.00
4/3/2011 0.00
4/4/2011 0.00
4/5/2011 0.00
4/6/2011 0.00
4/7/2011 0.02
4/8/2011 0.01
4/9/2011 0.00
4/10/2011 0.00
4/11/2011 0.00
4/12/2011
4/13/2011 0.00
4/14/2011
4/15/2011
4/16/2011
4/17/2011
4/18/2011
4/19/2011
4/20/2011
4/21/2011
4/22/2011
4/23/2011
4/24/2011
4/25/2011
4/26/2011
4/27/2011
4/28/2011
4/29/2011
4/30/2011
5/1/2011
5/2/2011
5/3/2011
5/4/2011
5/5/2011
5/6/2011
5/7/2011
5/8/2011
5/9/2011
5/10/2011
5/11/2011
5/12/2011
5/13/2011
5/14/2011
5/15/2011 0.19
5/16/2011
5/17/2011
5/18/2011
5/19/2011
5/20/2011
5/21/2011
5/22/2011
5/23/2011
5/24/2011
5/25/2011 T
5/26/2011
5/27/2011
5/28/2011
5/29/2011
5/30/2011
5/31/2011
6/1/2011
6/2/2011
6/3/2011
6/4/2011
6/5/2011
6/6/2011
6/7/2011
6/8/2011
6/9/2011
6/10/2011
6/11/2011
6/12/2011
6/13/2011
6/14/2011
6/15/2011
6/16/2011
6/17/2011
6/18/2011
6/19/2011
6/20/2011
6/21/2011
6/22/2011
6/23/2011
6/24/2011
6/25/2011
6/26/2011
6/27/2011
6/28/2011
6/29/2011
6/30/2011
Day of YearDaily PrcpMultiday Prcp
7/1/2011
7/2/2011
7/3/2011
7/4/2011
7/5/2011
7/6/2011
7/7/2011
7/8/2011
7/9/2011
7/10/2011
7/11/2011
7/12/2011
7/13/2011
7/14/2011
7/15/2011
7/16/2011
7/17/2011
7/18/2011
7/19/2011
7/20/2011
7/21/2011
7/22/2011
7/23/2011
7/24/2011
7/25/2011
7/26/2011
7/27/2011
7/28/2011
7/29/2011
7/30/2011
7/31/2011
8/1/2011
8/2/2011
8/3/2011
8/4/2011
8/5/2011
8/6/2011
8/7/2011
8/8/2011
8/9/2011
8/10/2011
8/11/2011
8/12/2011
8/13/2011
8/14/2011
8/15/2011
8/16/2011
8/17/2011
8/18/2011
8/19/2011
8/20/2011
8/21/2011
8/22/2011
8/23/2011
8/24/2011
8/25/2011
8/26/2011
8/27/2011
8/28/2011
8/29/2011
8/30/2011
8/31/2011
9/1/2011
9/2/2011
9/3/2011
9/4/2011
9/5/2011
9/6/2011
9/7/2011
9/8/2011
9/9/2011
9/10/2011
9/11/2011
9/12/2011
9/13/2011
9/14/2011
9/15/2011
9/16/2011
9/17/2011
9/18/2011
9/19/2011
9/20/2011
9/21/2011
9/22/2011
9/23/2011
9/24/2011
9/25/2011
9/26/2011
9/27/2011
9/28/2011
9/29/2011
9/30/2011



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 7:00 AM 0.00 0.0 M M M
10/2/2010 7:00 AM 0.00 0.0 M M M
10/3/2010 7:00 AM 0.00 0.0 M M M
10/4/2010 7:00 AM 0.00 0.0 M M M variable increasing high clouds, no measurable ground precipitation
10/5/2010 7:00 AM 0.00 0.0 M M M
10/6/2010 7:00 AM 0.00 0.0 M M M
10/7/2010 7:00 AM 0.00 0.0 M M M
10/8/2010 7:00 AM 0.00 0.0 M M M
10/9/2010 7:00 AM 0.00 0.0 M M M
10/10/2010 7:00 AM 0.00 0.0 M M M
10/11/2010 7:00 AM 0.00 0.0 M M M
10/12/2010 7:00 AM 0.00 0.0 M M M
10/13/2010 7:00 AM 0.00 0.0 M M M
10/14/2010 7:00 AM 0.00 0.0 M M M
10/15/2010 7:00 AM 0.00 0.0 M M M
10/16/2010 7:00 AM 0.00 0.0 M M M
10/17/2010 1:00 PM 0.04 0.0 0.00 0.0 0.00 Automated and manual gauges are .02 apart, the CoCoRaHS manual gauge has .04 in it, the autmomated system registers .02 - storm system has moved aggressively onshore with the first measurable rainfall amounts of the rainy season.
10/18/2010 7:00 AM 0.10 0.0 0.00 0.0 0.00 What appears to be a minor difference in vertical scale exaggeration between a manual observation and that of the station's system shows that, while we had two periods of significant and measurable rainfall, it was still two brief periods of light rain to produce measurable amounts to begin what may promise to be a healthy and robust rainy season.
10/19/2010 7:00 AM 0.00 0.0 M M M
10/20/2010 7:00 AM 0.00 0.0 M M M
10/21/2010 7:00 AM 0.00 0.0 M M M
10/22/2010 7:00 AM 0.16 0.0 0.00 0.0 0.00 Continuing and strengthening storm fronts are bringing the first of increasing rain amounts to the central Pacific coast.
10/23/2010 7:00 AM 0.06 0.0 0.00 0.0 0.00 Light intermittent rain continued to fall throughout the overnight hours, chance of rain showers increasing with apporach of next weather system.
10/24/2010 7:00 AM 0.18 0.0 0.00 0.0 0.00 Rain is continuing to fall, storm systems have opened the door and the Central Califorina coast is getting an aggressive start to the rainy season.
10/25/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 no additional rainfall after storm event
10/26/2010 7:00 AM 0.00 0.0 M M M
10/27/2010 7:00 AM 0.00 0.0 M M M
10/28/2010 7:00 AM 0.00 0.0 M M M
10/29/2010 7:00 AM 0.16 0.0 0.00 0.0 0.00 The storm door has opened on the Pacific Coast, and, while the type, direction, and dynamic of the different events varies, the rainy season has begun.
10/30/2010 7:00 AM 0.13 0.0 0.00 0.0 0.00 Periods of overnight rain from onshore systems continues as rainy season gets underway.
10/31/2010 7:00 AM 0.00 0.0 M M M
11/1/2010 7:00 AM 0.00 0.0 M M M
11/2/2010 7:00 AM 0.00 0.0 M M M
11/3/2010 7:00 AM 0.00 0.0 M M M
11/4/2010 7:00 AM 0.00 0.0 M M M
11/5/2010 7:00 AM 0.00 0.0 M M M
11/6/2010 7:00 AM 0.00 0.0 M M M
11/7/2010 7:00 AM 0.28 0.0 0.00 0.0 0.00 Light and steady rain continues as the cold front sags and moves southeast across central California.
11/8/2010 7:00 AM 0.44 0.0 0.00 0.0 0.00 Rain continued steadily through morning hours and became sporadic scattered showers by afternoon.
11/9/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Brief period between weather fronts of clear and cold weather, high clouds just now beginning to track in from the northwest.
11/10/2010 7:00 AM 0.00 0.0 M M M
11/11/2010 7:00 AM 0.00 0.0 M M M
11/12/2010 7:00 AM 0.00 0.0 M M M
11/13/2010 7:00 AM 0.00 0.0 M M M
11/14/2010 7:00 AM 0.00 0.0 M M M
11/15/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Record-setting heat has replaced the storm track for the time being, however, a fairly earyl start to what promises to be a prolonged and above-average rainy season will see a return to more seasonal weather at the end of the week.
11/16/2010 7:00 AM 0.00 0.0 M M M
11/17/2010 7:00 AM 0.00 0.0 M M M
11/18/2010 7:00 AM 0.00 0.0 M M M
11/19/2010 7:00 AM 0.00 0.0 M M M
11/20/2010 7:00 AM 0.51 0.0 0.00 0.0 0.00 Precipitation reaching the ground at this reporting station was late in arriving, even though returns showed light-moderate precipitation moving over the area, beginning in the early morning hours.
11/21/2010 7:00 AM 0.53 0.0 0.00 0.0 0.00 Station experienced difficulty in logging on to the sytem this morning to report overnight precipitation from thunderstorms and squall line moving through the area. Report delayed 12 hours due to twechnical issues.
11/22/2010 7:00 AM 0.03 0.0 0.00 0.0 0.00 Late-day/early evening scattered showers added slightly to rainfall totals. More precipitation of differing kinds is a possibility later today, likely hail. Snow has been reported on higher elevations in the San Francisco Bay Area, inlcuding Mt. Hamilton, and with night temperatures as low as the upper 20's expected next 72 hours, frozen precipitation is more likely.
11/23/2010 7:00 AM 0.00 0.0 M M M
11/24/2010 7:00 AM 0.00 0.0 M M M
11/25/2010 7:00 AM 0.00 0.0 M M M
11/26/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
11/27/2010 7:00 AM 0.16 0.0 0.00 0.0 0.00 Rain rerturning after mid-week cold snap and precipitation totals were impressive.
11/28/2010 7:00 AM 0.00 0.0 M M M
11/29/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Clear and cold, light frost, ice on cars, with next precipitation expected Thursday or Friday. This station shows we are already at apporximately 18% of seasonal average on rainfall.
11/30/2010 7:00 AM 0.00 0.0 M M M
12/1/2010 7:00 AM 0.02 0.0 0.00 0.0 0.00 Isolated shower in the afternoon, in advance of a larger system coming onshore next 48 hrs., produced brief measurable precipitation with more on the way.
12/2/2010 7:00 AM 0.00 0.0 M M M
12/3/2010 7:00 AM 0.19 0.0 0.00 0.0 0.00 As far as the latest storm system, the other shoe dropped, and appreciable rainfall from variable scattered showers continues what is becoming a long, cold, wet winter.
12/4/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 No additional precipitation fell last 24 hours, however, considerable sized storm approaching with cold and wind.
12/8/2010 7:00 AM 0.12 0.0 0.00 0.0 0.00 Rain continuing to fall, began early this morning, rates are between very light and light, intermittent showers and a rate of between .02 - .04 per hour.
12/9/2010 7:00 AM 0.34 0.0 0.00 0.0 0.00 Relatively continuous light rain has added to what is now over one-fourth of our seasonal average already being reached.
12/10/2010 7:00 AM 0.02 0.0 0.00 0.0 0.00 Heavy drizzle associated with the southern influence of powerful tropical storms has caused persistent cloudiness and heavy, constant drizzle, with unseasonably mild/warm temepratures around the clock, high humidity, and almost a tropical feel to Bay Area weather.
12/13/2010 7:00 AM T 0.0 0.00 0.0 0.00 Heavy fog and drizzle are extremely moisture-laden.
12/14/2010 7:00 AM 0.02 0.0 0.00 0.0 0.00 Continued heavy tulle fog conditions in the early morning hours.
12/15/2010 7:00 AM T 0.0 0.00 0.0 0.00 Heavy fog & drizzle between increasing clouds and threatening rain.
12/16/2010 7:00 AM 0.10 0.0 0.00 0.0 0.00 Disruption of automated data stream is backed up by manual collection/observation systems.
12/17/2010 7:00 AM 0.08 0.0 0.00 0.0 0.00 Light/moderate rain, fairly steady, early morning hours and again later in the afternoon.
12/18/2010 7:00 AM 0.41 0.0 0.00 0.0 0.00 Intermittent periods of light/moderate rainfall have introduced the San Francisco Bay Area to the first of series of Crhistmas storms.
12/19/2010 7:00 AM 0.73 0.0 0.00 0.0 0.00 Rain fairly steady most of night and morning.
12/20/2010 7:00 AM 0.36 0.0 0.00 0.0 0.00 Periods of steady, light-to-moderate rainfall were replaced with thunderstorm activity in the afternoon and evening, with brief, heavy downpours as a prominent feature.
12/21/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Locally heavy early morning fog.
12/22/2010 7:00 AM 0.30 0.0 0.00 0.0 0.00 Late night and early morning precipitation event continues past reporting time, still raining this hour
12/23/2010 7:00 AM 0.02 0.0 0.00 0.0 0.00
12/24/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
12/25/2010 7:00 AM 0.00 0.0 0.00 M M Heavy fog in early morning hours gave way to increasing cloudiness.
12/26/2010 7:00 AM 0.76 0.0 0.00 0.0 0.00 Overnight heavy rain and hail produced most of the 24-hour precipitation.
12/27/2010 7:00 AM 0.04 0.0 0.00 0.0 0.00 Brief overnight rain shower was the only precipitation.
12/28/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Dense fog replaced later by increasing cloud cover.
12/29/2010 7:00 AM 0.75 0.0 0.00 0.0 0.00 High winds and periods of heavy rain in the evening and overnight hours produced significant precipitation.
12/30/2010 5:00 AM 0.00 0.0 0.00 0.0 0.00 Temperatures approaching freezing may produce some ice/frost.
12/31/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Clear and cold conditions in between storm systems send the old year out quiet and calm.
1/1/2011 7:00 AM 0.23 0.0 0.00 0.0 0.00 Intermittent periods of light rain mostly in the overnight hours.
1/2/2011 7:00 AM 0.24 0.0 0.00 0.0 0.00 Periods of light rain throughout the day continue.
1/3/2011 7:00 AM 0.02 0.0 0.00 0.0 0.00 "Blowback" recirculating storm activity from a descending low added a bit more to the weekend rain totals. Drier, but, foggy and cold typical Carquinez Strait January conditions expected the balance of the week.
1/4/2011 7:00 AM 0.00 0.0 M M M
1/5/2011 7:00 AM 0.00 0.0 M M M Fog clearing today, but pervasive in low/middle elevations.
1/6/2011 7:00 AM T 0.0 0.00 0.0 0.00 Cold, damp, humid conditions with wet, heavy, dense fog persist.
1/7/2011 7:00 AM 0.02 0.0 0.00 0.0 0.00 Cold, damp conditions with heavy fog and high rate of condensation have actually added to precipitation (dew). Dew point and air temperature are nearly equal.
1/8/2011 7:00 AM T 0.0 0.00 0.0 0.00 Cold, wet, moisture-laden fog persists, moving from east to west and achieving enough altitude to be able to move fully westward from the inland valleys through the Carquinez Strait.
1/9/2011 7:00 AM 0.00 0.0 M M M
1/10/2011 7:00 AM 0.00 0.0 M M M
1/11/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Cloudy but no precipitation reachng the ground at this station location.
1/12/2011 7:00 AM 0.02 0.0 0.00 0.0 0.00 A brief period of light rain showers produced measurable precipitation.
1/13/2011 7:00 AM T 0.0 0.00 0.0 0.00 Some light rain has just now, as of report time, begun to fall.
1/14/2011 7:00 AM 0.08 0.0 0.00 0.0 0.00 Rain beginning early in the morning passed through the area by afternoon from a weak system originally not expected to have much impact.
1/15/2011 7:00 AM 0.00 0.0 M M M
1/16/2011 7:00 AM 0.00 0.0 M M M
1/17/2011 7:00 AM 0.00 0.0 M M M
1/18/2011 7:00 AM 0.00 0.0 M M M
1/19/2011 7:00 AM 0.00 0.0 M M M
1/20/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Celaring, very windy.
1/21/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Clear, cool, breezy, storm track too far to the north. No rain expected for about 10 days.
1/22/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Drier, warmer weather associated with a high pressure system will remain in place for the next week - 10 days.
1/23/2011 7:00 AM 0.00 0.0 M M M
1/24/2011 7:00 AM 0.00 0.0 M M M
1/25/2011 7:00 AM 0.00 0.0 M M M
1/26/2011 7:00 AM 0.00 0.0 M M M
1/27/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Return of dense, heavy fog may produce trace amounts of condensation precipitation, as humidity levels are high and ait temperature is close (within 5 degrees Fahrenheit) of dewpoint.
1/28/2011 7:00 AM 0.00 0.0 M M M
1/29/2011 7:00 AM 0.00 0.0 M M M
1/30/2011 7:00 AM 0.51 0.0 0.00 0.0 0.00 Bands of moisture continue to swing in from the Pacific, intensifying as they reach landfall. intermittent showers, the heaviest during the night, continue to produce considerable precipitation and have resulted in a Significant Weather event.
1/31/2011 7:00 AM 0.14 0.0 0.00 0.0 0.00 Rain contiunued to fall throughout morning hours as storm system moved through the area. Skies are clearing and temperatures falling.
2/1/2011 7:00 AM T 0.0 0.00 0.0 0.00 Cold, heavy, dense, damp fog replaces clear weather following the weekend storm event.
2/28/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Cold and clear, temperatures now above freezing with a low of 40.2 degrees before dawn.
3/1/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Clear and cold until just after sunrise, now high clouds in advance of the approaching western storm are announcing the impending arrival of more late-winter precipitation.
3/2/2011 7:00 AM 0.15 0.0 0.00 0.0 0.00 Early morning showers produced appreciable rainfall.
3/3/2011 7:00 AM 0.00 0.0 M M M
3/4/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Clear skies and warmer weather in between storm systems, next rain expected tomorrow night.
3/5/2011 7:00 AM 0.00 0.0 M M M
3/6/2011 7:00 AM 0.00 0.0 M M M
3/7/2011 7:00 AM 0.00 0.0 M M M
3/8/2011 7:00 AM 0.00 0.0 M M M
3/9/2011 7:00 AM 0.00 0.0 M M M
3/10/2011 7:00 AM 0.00 0.0 M M M
3/11/2011 7:00 AM 0.00 0.0 M M M
3/13/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Mostly cloudy with possibility of showers later, no precipitation yet. WS2812U-IT is up and running in addition to the older 2310 system and the manual gauge.
3/14/2011 7:00 AM 0.30 0.0 0.00 0.0 0.00 intermittent rain showers still continuing...new weather system is installed, up, and running, will be the second in use at this station and agrees precisely with the manual gauge.
3/15/2011 7:00 AM 0.00 0.0 M M M
3/16/2011 7:00 AM 0.00 0.0 M M M
3/17/2011 7:00 AM 0.00 0.0 M M M
3/18/2011 7:00 AM 0.08 0.0 0.00 0.0 0.00 Intermittent light-to-moderate showers continue as a well-defined low pressure system closes in from the Gulf of Alaska - not much yet, but much more expected.
3/19/2011 7:00 AM 1.46 0.0 0.00 0.0 0.00 Periods of heavy rain, with thunder and lightning in the evening hours.
3/20/2011 7:00 AM 0.95 0.0 0.00 0.0 0.00 Heavy rain and high winds overnight added to storm totals.
3/22/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Mostly clear skies in between storm systems belies the fact we are launching into one of the wettest, wildest, stormiest springs seen in a long time.
3/24/2011 12:10 PM 0.99 0.0 0.00 0.0 0.00 New storm is in progress at this reporting, may become a Significant Weather Event shortly, rain fall rate is .01"/minute.
3/25/2011 7:00 AM 1.58 0.0 0.00 0.0 0.00 Heavy rain lasting most of the day produced major amounts of precipitation.
3/26/2011 7:00 AM 0.34 0.0 0.00 0.0 0.00 Light, steady rain continuing to fall at this hour.
4/1/2011 7:00 AM 0.00 0.0 M M M
4/2/2011 7:00 AM 0.00 0.0 M M M
4/3/2011 7:00 AM 0.00 0.0 M M M
4/4/2011 7:00 AM 0.00 0.0 M M M
4/5/2011 7:00 AM 0.00 0.0 M M M
4/6/2011 7:00 AM 0.00 0.0 M M M
4/7/2011 7:00 AM 0.02 0.0 0.00 0.0 0.00 Overnight light precipitation associated with the advance of a storm front produced some rainfall, however, additional storm activity and precipitation will need the collision of rapidly warming land masses in a temperate spring environment with a higher angle of sunlight, coupled with the southeastern push of a cold Alaskan-based low pressure system, to produce sufficient instability to create late afternoon rainfall this close to the coast and get it to drop rainfall west of the Coastal Range.
4/8/2011 7:00 AM 0.01 0.0 0.00 0.0 0.00 Tornadic activity passed, once again, as it does when it occurs regionally at this time of the year, to the north and east, touching down finally near Fairfield after making a brief zig-zag back in this direction. Afternoon unstable weather conditions association with avection phenomena produced slight precipitation just before dusk.
4/9/2011 7:00 AM 0.00 0.0 M M M
4/10/2011 7:00 AM 0.00 0.0 M M M
4/11/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Sunny weekend replaced by increasing clouds.
4/13/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Increasing cloudniess leading to mid-morning scattered showers, began too late for standard reporting period. See report for 4/14/2011 when filed for further details.
5/15/2011 7:00 AM 0.19 0.0 0.00 0.0 0.00 Periodic brief showers followed a significant weather event last night at 11 PM, continued partly cloudy to cloudy and unstable weather continues.
5/25/2011 7:00 AM T M M 0.0 0.00 Atmospheric instability moving onshore to the north has produced brief periods of moisture from the southern tail of the latest system.



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
12/26/2010 3:03 AM A significant weather event occurring between 0245 and 0328 26 December 2010 featured heavy rain falling down at the rate of .02/minute, with hailstorm lasting 5 minutes between 0303 and 0308 hours. 3/8" 1/4" Pea Size Rice Hard|White Ice 1min no damage Continuous False After rain Same time as smaller hail 10-20 .5
3/18/2011 9:37 PM Multiple lightning strikes knocked out power to some neighboring communities and struck nearby electrical transmission towers, followed by intense downpour and brief hailstorm, depth of hail reported by Pinole Fire Department was 1/4" - 1/2" depth in streets. 3/8" NA 1/4" Pea Size Mixed 2 2min no damage Continuous True After rain Same time as smaller hail vertical .5