Station Overview Station Location
Station Number CA-SN-55 Latitude 38.289952
Station Name Sonoma 1.9 E Longitude -122.424944
County Sonoma Elevation (ft) 124



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 1.64 4.33 6 4.33 6 0.00 0 0 6 0 0.0 0 0
Nov 10 3.70 2.97 7 2.97 7 0.00 0 0 7 0 0.0 0 0
Dec 10 5.78 2.29 9 2.29 9 0.00 0 0 9 0 0.0 0 0
Jan 11 6.14 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 11 6.11 4.87 8 4.87 8 0.00 0 0 8 0 0.0 0 0
March 11 4.47 10.28 19 10.28 19 0.00 0 0 19 0 0.0 0 0
April 11 1.88 0.46 4 0.46 4 0.00 0 0 4 0 0.0 0 0
May 11 1.11 2.10 7 2.10 7 0.00 0 0 7 0 0.0 0 0
June 11 0.20 2.42 12 2.42 12 0.00 0 0 8 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 0.09 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 11 0.23 0.03 1 0.03 1 0.00 0 0 1 0 0.0 0 0
Water Year Totals: 31.36" 29.75" 73 days 29.75" 73 0.00" 0 days 0 69 days 0 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
10/2/2010
10/3/2010
10/4/2010
10/5/2010
10/6/2010
10/7/2010
10/8/2010
10/9/2010
10/10/2010
10/11/2010
10/12/2010
10/13/2010
10/14/2010
10/15/2010
10/16/2010
10/17/2010
10/18/2010 0.22
10/19/2010
10/20/2010
10/21/2010
10/22/2010
10/23/2010
10/24/2010
10/25/2010 3.74
10/26/2010
10/27/2010
10/28/2010 0.04
10/29/2010 0.19
10/30/2010 0.11
10/31/2010 0.03
11/1/2010
11/2/2010
11/3/2010
11/4/2010
11/5/2010
11/6/2010
11/7/2010 0.76
11/8/2010 0.12
11/9/2010
11/10/2010 0.19
11/11/2010
11/12/2010
11/13/2010
11/14/2010
11/15/2010
11/16/2010
11/17/2010
11/18/2010
11/19/2010
11/20/2010 0.41
11/21/2010 0.78
11/22/2010
11/23/2010 0.22
11/24/2010
11/25/2010
11/26/2010
11/27/2010
11/28/2010
11/29/2010 0.49
11/30/2010
12/1/2010
12/2/2010
12/3/2010 0.14
12/4/2010 0.02
12/5/2010 0.03
12/6/2010 0.90
12/7/2010
12/8/2010 0.24
12/9/2010 0.47
12/10/2010 0.07
12/11/2010
12/12/2010
12/13/2010
12/14/2010 0.22
12/15/2010 0.20
12/16/2010
12/17/2010
12/18/2010
12/19/2010
12/20/2010
12/21/2010
12/22/2010
12/23/2010
12/24/2010
12/25/2010
12/26/2010
12/27/2010
12/28/2010
12/29/2010
12/30/2010
12/31/2010
Day of YearDaily PrcpMultiday Prcp
1/1/2011
1/2/2011
1/3/2011
1/4/2011
1/5/2011
1/6/2011
1/7/2011
1/8/2011
1/9/2011
1/10/2011
1/11/2011
1/12/2011
1/13/2011
1/14/2011
1/15/2011
1/16/2011
1/17/2011
1/18/2011
1/19/2011
1/20/2011
1/21/2011
1/22/2011
1/23/2011
1/24/2011
1/25/2011
1/26/2011
1/27/2011
1/28/2011
1/29/2011
1/30/2011
1/31/2011
2/1/2011
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 0.24
2/15/2011 0.38
2/16/2011 1.96
2/17/2011 0.57
2/18/2011
2/19/2011 0.54
2/20/2011 0.10
2/21/2011
2/22/2011
2/23/2011
2/24/2011
2/25/2011 1.06
2/26/2011 0.02
2/27/2011
2/28/2011
3/1/2011
3/2/2011 0.43
3/3/2011 0.07
3/4/2011
3/5/2011
3/6/2011 0.76
3/7/2011 0.26
3/8/2011 0.04
3/9/2011
3/10/2011
3/11/2011 0.06
3/12/2011
3/13/2011
3/14/2011 0.81
3/15/2011 0.06
3/16/2011 1.00
3/17/2011
3/18/2011 0.15
3/19/2011 0.85
3/20/2011 1.43
3/21/2011 0.25
3/22/2011
3/23/2011 1.02
3/24/2011 0.58
3/25/2011 1.09
3/26/2011 0.98
3/27/2011 0.22
3/28/2011 0.22
3/29/2011
3/30/2011
3/31/2011
Day of YearDaily PrcpMultiday Prcp
4/1/2011
4/2/2011
4/3/2011
4/4/2011
4/5/2011
4/6/2011
4/7/2011
4/8/2011
4/9/2011
4/10/2011
4/11/2011
4/12/2011
4/13/2011
4/14/2011
4/15/2011
4/16/2011
4/17/2011
4/18/2011
4/19/2011
4/20/2011
4/21/2011 0.09
4/22/2011
4/23/2011
4/24/2011 0.12
4/25/2011 0.15
4/26/2011 0.10
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 0.20
5/16/2011 0.40
5/17/2011 0.47
5/18/2011 0.43
5/19/2011
5/20/2011
5/21/2011
5/22/2011
5/23/2011
5/24/2011
5/25/2011
5/26/2011 0.38
5/27/2011
5/28/2011 0.19
5/29/2011
5/30/2011
5/31/2011 0.03
6/1/2011 0.03
6/2/2011 0.09
6/3/2011 0.01
6/4/2011 0.40
6/5/2011 0.80
6/6/2011 0.18
6/7/2011 0.02
6/8/2011 0.00
6/9/2011 0.00
6/10/2011 0.00
6/11/2011 0.00
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 0.89
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 0.03
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
10/18/2010 8:00 AM 0.22 M M M M what a surprise....not much but enough to settle the dust.....
10/25/2010 8:00 AM 3.74 M M M M I've been out of town.....total is from 10-22 till 10-25.....went to Grass Valley (Sierra foothills) very wet & windy...I understand it was much the same here..
10/28/2010 8:00 AM 0.04 M M M M a bit of rain overnight, forecast calls for rain today & through the weekend.......GO GIANTS!
10/29/2010 8:00 AM 0.19 M M M M I did read gauge this AM, then couldn't get online before I had to leave...intermintent all morning & then sunshine...raining again as I type....What a ballgame last evening......GO GIANTS!
10/30/2010 8:00 AM 0.11 M M M M showers should continue today......
10/31/2010 8:00 AM 0.03 M M M M
11/7/2010 8:00 AM 0.76 M M M M looks like rain most of today & possibly into tomorrow....
11/8/2010 8:00 AM 0.12 M M M M lots of sunshine this am, but cool....more rain possibly tomorrow....
11/10/2010 8:00 AM 0.19 M M M M rain over for a bit.......bright sunshine, a little cool...
11/20/2010 8:00 AM 0.41 M M M M rain & wind in the forecast for the next couple of days, cool temps.......
11/21/2010 8:00 AM 0.78 M M M M yesterday was cold, windy & rainy....today we awake to bright sun, no wind,clear skies but still cold...more rain forecast today & tomorrow
11/23/2010 8:00 AM 0.22 M M M M cold & windy today with temps dropping to freezing tonight.....
11/29/2010 8:00 AM 0.49 M M M M above measurment is for 11/26 &11/27......was out of town for Thanksgiving holiday......very cold, freezing temps last 2 days & forecast calls for more tonight.....
12/3/2010 8:00 AM 0.14 M M M M more rain in the forecast through Sunday.......
12/4/2010 8:00 AM 0.02 M M M M
12/5/2010 8:00 AM 0.03 M M M M
12/6/2010 8:00 AM 0.90 M M M M lots of rain yesterday along with gusty winds.....more rain forecast for this am & then some clearing......
12/8/2010 8:00 AM 0.24 M M M M
12/9/2010 9:10 AM 0.47 M M M M I'm late this morning.......steady rain most of yesterday & this AM lots of dense fog...
12/10/2010 8:00 AM 0.07 M M M M
12/14/2010 8:00 AM 0.22 M M M M rain forecast for much of the day.....
12/15/2010 8:00 AM 0.20 M M M M
2/14/2011 8:00 AM 0.24 M M M M I've been out of contact for almost two months...had a nasty case of pneumonia& spent some time in the hospital but I'm up & running again.......
2/15/2011 8:00 AM 0.38 M M M M
2/16/2011 8:00 AM 1.96 M M M M WOW! Last night was a doozie.....wind & rain started at about 4 PM & steadily increased as the hours passed... bright, sunny & clear this AM but more rain in the forecast.......
2/17/2011 8:00 AM 0.57 M M M M we had some pretty wild weather yesterday, hail, wind, & thunder.....hail started about l PM & lasted about 20 min.......but it was cold enough that there was some still on the ground around 4 PM.....forecast call for more of the same today...
2/19/2011 8:00 AM 0.54 M M M M
2/20/2011 8:00 AM 0.10 M M M M freezing temps this AM...28 degrees at 6:30 am.......but it is bright & sunny......
2/25/2011 8:00 AM 1.06 M M M M
2/26/2011 8:00 AM 0.02 M M M M
3/2/2011 8:00 AM 0.43 M M M M
3/3/2011 8:00 AM 0.07 M M M M
3/6/2011 8:00 AM 0.76 M M M M
3/7/2011 8:00 AM 0.26 M M M M
3/8/2011 8:00 AM 0.04 M M M M
3/11/2011 8:00 AM 0.06 M M M M
3/14/2011 8:00 AM 0.81 M M M M
3/15/2011 8:00 AM 0.06 M M M M
3/16/2011 8:00 AM 1.00 M M M M most of the rain here was between 2 & 5 PM...it really came down & forecast calls for more of the same today.......
3/18/2011 8:00 AM 0.15 M M M M we have had quite a bit of rain all morning, lots of wind & it's cold.......I'm sure I'll have a significant amount for tomorrows report, forecast call for rain into next week with a possibility of hail & thunder tonight thru Sunday.....
3/19/2011 8:00 AM 0.85 M M M M we are really having some weather....lots of rain, some wind & forecast call for more of the same plus a possibily of hail & thunder....first day of Spring tomorrow & it will come in with a bang........
3/20/2011 8:00 AM 1.43 M M M M WOW! I don't think it stopped raining at all yesterday & did hear during the night...lots of wind also....branches down but nothing big...my nieghbors canopy protecting his citrus is a tangled mess...rain is forecast through Wednesday......Happy Spring!
3/21/2011 8:00 AM 0.25 M M M M
3/23/2011 8:00 AM 1.02 M M M M more rain on the way....forecast calls for more rain & wind through Friday......
3/24/2011 8:00 AM 0.58 M M M M read my guage this AM, then off to exercise....it has not stopped raining & also lots of wind......storm drains, creeks & ditches overflowing.....I'm sure I'll have a very significant amt to report tomorrow.....
3/25/2011 8:00 AM 1.09 M M M M what a wet & wild day......lots of rain & wind....many areas of our county damage from falling trees, flooded roads * overflowing creeks.......today is supposed tobe mild with a few scattered showers...
3/26/2011 8:00 AM 0.98 M M M M Sonoma County has been hit hard with all the rain &wind....trees down, power outages, roads flooded & of course some areas hit worse than others...West County is a mess......forecasts call for more rain today & then tapering off tomorrow & next week we should have some sun & mild temps......
3/27/2011 8:00 AM 0.22 M M M M haven't had any rain since yesterday afternoon...forecast calls for a possible storm today & next week looks good with mild temps & sunshine....
3/28/2011 8:00 AM 0.22 M M M M light sprinkles yesterday & welcome SUNSHINE today...forecast calls for sun all week with rising temps.......ground is very wet & still some power problems in West Sonoma County.......
4/21/2011 8:00 AM 0.09 M M M M
4/24/2011 8:00 AM 0.12 M M M M Easter egg hunts are going to be a bit damp this year & cool.......
4/25/2011 8:00 AM 0.15 M M M M weather cleared yesterdau & we had lots of sun, not real warm but it was good to see the sun....it is still drizzling & doesn't look like it will be clearing anytime soon.......
4/26/2011 8:00 AM 0.10 M M M M I recorded 1/4' or rain the last two days but with all the wind yesterday it pretty much dried out.....oh well....
5/15/2011 8:00 AM 0.20 M M M M can hardly believe it's May 15h & we are having rain again, not much, but still rain.....forecast calls for more of the same thru Thursday, with possibilty of thunder & hail....
5/16/2011 8:00 AM 0.40 M M M M past 24 hrs. have been unusual weatherwise here...a couple of downpours & hail yesterday AM & then more rain during the night....more of the same is forecast for today, tapering off with warmer temps by Thursday........
5/17/2011 8:00 AM 0.47 M M M M well it feels like the middle of winter today....rain is slowly tapering off & we should have warmer temps the next two days....snow fell again in the Sierra's & some ski areas might still be operating 4th of July!
5/18/2011 8:00 AM 0.43 M M M M blue skies & sunshine this AM....rain seem to be over for a bit......forecast calls for warmer temps rest of the week....
5/26/2011 8:00 AM 0.38 M M M M doesn't look like much but most rain fell in about an hour in the AM.....few sprinkles early evening...lots of sun this morning but it is cool....forecast calls for cooler temps with maybe rain on Sunday.....Sierras had quite a bit of snow
5/28/2011 8:00 AM 0.19 M M M M was out of town for the holiday hence the delay...went to Mendocino County & had lots of rain there...forecast calls for possible showers on Tues. May31st.......
5/31/2011 8:00 AM 0.03 M M M M it's drizzling & forecast calls for showers today &tomorrow.....
6/1/2011 8:00 AM 0.03 M M M M June 1st & we are still having rain.....forecast calls for more showers today, then clearing & more rain for the weekend....grape growers are worried as the moisture causes bunchrot & mildew....it is also unseasonably cool espically night temps...
6/2/2011 8:00 AM 0.09 M M M M today should just be cloudy &overcast...new storm coming in Friday through the weekend, could bring up to two inches of rain....it will sure put a damper on graduations & other planned outdoor activities not to mention what it will do to the grapes...had quit a bit of hail in some areas around me but not here.....the Sierras had snow & there were chains required on interstate 80 E......
6/3/2011 8:00 AM 0.01 M M M M sorry I'm late today...forecast for the weekend is lots of rain for North Bay Counties....up to 2"...lots of outdoor events have been canceled or postponed...not good for the farmers...temps are mild,about 63 degrees but have dipped to low 40's at night....rain is supposed to start by late afternoon....
6/4/2011 8:00 AM 0.40 M M M M RAIN FINAly started during the night...had a few sprinkles about 5:45 PM & then nothing.....forecast calls for rain today thru Monday or Tues...not good for the farmers in my area....
6/5/2011 8:00 AM 0.80 M M M M more rain today, tomorrow with possible thunder....could continue til Tuesday...apparently this is the wettest June recorded....
6/6/2011 8:00 AM 0.18 M M M M possibility of lingering showers today....clearing tomorrow & forecast calls for warming temps the rest of the week......maybe we will finally get some June weather!
6/7/2011 8:00 AM 0.02 M M M M SUNSHINE.....how sweet it is! Can't hardly belive it.....first time in weeks awoke to bright skies..temps will be rising (low 70's)today & forecast calls for same rest of the week......
6/8/2011 8:00 AM 0.00 0.0 M M M typical CA June morning....FOG! it will burn off in a few hours & the sun will be out...beautiful day yesterday....should be the same today......
6/9/2011 8:00 AM 0.00 0.0 M M M typical June morning in Sonoma Co., fog with cool temps....it'll burn off in a few hours & lovely day expected with lots of sun........
6/10/2011 8:00 AM 0.00 0.0 M M M Beautiful day!
6/11/2011 8:00 AM 0.00 0.0 M M M looks like we'll have another nice day......how close are we to 10,000 reports?
6/29/2011 8:00 AM 0.89 M M M M what a wild day yesterday......rain started a bit after 8 AM & continued til early evening & it was cool...still cool today (58 deg)& gray...sorry I'm late with my report but had no phone so that means no internet.....
9/26/2011 8:00 AM 0.03 M M M M what a surprise....rain, not much.....cool temps this AM but forecast calls for warming the rest of the week...last week at this time we had triple digits!



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