Station Overview Station Location
Station Number CA-AL-3 Latitude 37.716904
Station Name Castro Valley 0.4 NNE Longitude -122.058526
County Alameda Elevation (ft) 536



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 09 1.33 2.00 11 2.00 11 0.00 0 0 3 0 0.0 0 0
Nov 09 3.13 0.78 5 0.78 5 0.00 0 0 5 0 0.0 0 0
Dec 09 4.32 3.47 10 3.47 10 0.00 0 0 10 0 0.0 0 0
Jan 10 4.75 5.46 16 5.46 16 0.00 0 0 13 0 0.0 0 0
Feb 10 4.70 2.58 15 2.58 15 0.00 0 0 9 0 0.0 0 0
March 10 3.82 2.89 22 2.53 5 0.36 17 1 5 0 0.0 0 0
April 10 1.61 2.99 22 2.99 22 0.00 0 0 8 0 0.0 0 0
May 10 0.89 1.35 31 1.35 31 0.00 0 0 7 0 0.0 0 0
June 10 0.21 0.03 30 0.03 30 0.00 0 0 2 0 0.0 0 0
July 10 0.02 0.00 21 0.00 21 0.00 0 0 0 0 0.0 0 0
Aug 10 0.07 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 10 0.25 0.18 30 0.18 30 0.00 0 0 1 0 0.0 0 0
Water Year Totals: 25.10" 21.73" 213 days 21.37" 196 0.36" 17 days 1 63 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
10/1/2009
10/2/2009
10/3/2009
10/4/2009
10/5/2009
10/6/2009
10/7/2009
10/8/2009
10/9/2009
10/10/2009
10/11/2009 0.00
10/12/2009 0.00
10/13/2009 0.57
10/14/2009 1.13
10/15/2009 0.00
10/16/2009 0.00
10/17/2009 0.00
10/18/2009 0.00
10/19/2009 0.00
10/20/2009 0.30
10/21/2009
10/22/2009 0.00
10/23/2009
10/24/2009
10/25/2009
10/26/2009
10/27/2009
10/28/2009
10/29/2009
10/30/2009
10/31/2009
11/1/2009
11/2/2009
11/3/2009
11/4/2009
11/5/2009
11/6/2009
11/7/2009 0.11
11/8/2009
11/9/2009
11/10/2009
11/11/2009
11/12/2009
11/13/2009 0.04
11/14/2009
11/15/2009
11/16/2009 0.02
11/17/2009
11/18/2009
11/19/2009
11/20/2009
11/21/2009 0.43
11/22/2009
11/23/2009
11/24/2009
11/25/2009
11/26/2009
11/27/2009
11/28/2009 0.18
11/29/2009
11/30/2009
12/1/2009
12/2/2009
12/3/2009
12/4/2009
12/5/2009
12/6/2009
12/7/2009 0.81
12/8/2009
12/9/2009
12/10/2009
12/11/2009 0.25
12/12/2009 0.55
12/13/2009 0.64
12/14/2009 0.24
12/15/2009
12/16/2009
12/17/2009 0.02
12/18/2009
12/19/2009
12/20/2009
12/21/2009
12/22/2009 0.21
12/23/2009
12/24/2009
12/25/2009
12/26/2009
12/27/2009 0.64
12/28/2009
12/29/2009 0.02
12/30/2009 0.09
12/31/2009
Day of YearDaily PrcpMultiday Prcp
1/1/2010
1/2/2010
1/3/2010
1/4/2010
1/5/2010
1/6/2010
1/7/2010
1/8/2010 0.02
1/9/2010
1/10/2010
1/11/2010
1/12/2010 0.16
1/13/2010 0.32
1/14/2010
1/15/2010
1/16/2010
1/17/2010 0.02
1/18/2010 0.24
1/19/2010 1.03
1/20/2010 0.72
1/21/2010 0.98
1/22/2010 0.98
1/23/2010 0.32
1/24/2010 0.12
1/25/2010 0.13
1/26/2010 0.42
1/27/2010
1/28/2010 0.00
1/29/2010 0.00
1/30/2010
1/31/2010 0.00
2/1/2010 0.00
2/2/2010 0.00
2/3/2010 0.00
2/4/2010 0.00
2/5/2010 0.22
2/6/2010 0.21
2/7/2010
2/8/2010
2/9/2010 0.02
2/10/2010 0.22
2/11/2010 0.00
2/12/2010 0.00
2/13/2010
2/14/2010 0.03
2/15/2010
2/16/2010
2/17/2010
2/18/2010
2/19/2010
2/20/2010
2/21/2010
2/22/2010 0.53
2/23/2010
2/24/2010 0.65
2/25/2010 0.03
2/26/2010
2/27/2010 0.67
2/28/2010
3/1/2010
3/2/2010
3/3/2010 0.99
3/4/2010 0.34
3/5/2010
3/6/2010
3/7/2010
3/8/2010
3/9/2010 0.06
3/10/2010 0.26
3/11/2010
3/12/2010
3/13/2010 0.88
3/14/2010 **
3/15/2010 **
3/16/2010 **
3/17/2010 **
3/18/2010 **
3/19/2010 **
3/20/2010 **
3/21/2010 **
3/22/2010 **
3/23/2010 **
3/24/2010 **
3/25/2010 **
3/26/2010 **
3/27/2010 **
3/28/2010 **
3/29/2010 **
3/30/2010 0.36
3/31/2010
Day of YearDaily PrcpMultiday Prcp
4/1/2010
4/2/2010 0.00
4/3/2010
4/4/2010 0.00
4/5/2010 0.97
4/6/2010 0.00
4/7/2010 0.00
4/8/2010 0.00
4/9/2010 0.00
4/10/2010 0.00
4/11/2010
4/12/2010 1.05
4/13/2010 0.00
4/14/2010 0.00
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.00
4/18/2010 0.00
4/19/2010 0.00
4/20/2010 0.57
4/21/2010 0.05
4/22/2010 0.11
4/23/2010
4/24/2010
4/25/2010
4/26/2010
4/27/2010 0.02
4/28/2010 0.15
4/29/2010 0.07
4/30/2010
5/1/2010 0.00
5/2/2010 0.00
5/3/2010 0.00
5/4/2010 0.00
5/5/2010 0.00
5/6/2010 0.00
5/7/2010 0.00
5/8/2010 0.00
5/9/2010 0.00
5/10/2010 0.03
5/11/2010 0.30
5/12/2010 0.00
5/13/2010 0.00
5/14/2010 0.00
5/15/2010 0.00
5/16/2010 0.00
5/17/2010 0.00
5/18/2010 0.15
5/19/2010 0.00
5/20/2010 0.01
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.00
5/24/2010 0.01
5/25/2010 0.00
5/26/2010 0.47
5/27/2010 0.00
5/28/2010 0.38
5/29/2010 0.00
5/30/2010 0.00
5/31/2010 0.00
6/1/2010 0.00
6/2/2010 0.00
6/3/2010 0.01
6/4/2010 0.00
6/5/2010 0.00
6/6/2010 0.00
6/7/2010 0.00
6/8/2010 0.00
6/9/2010 0.02
6/10/2010 0.00
6/11/2010 0.00
6/12/2010 0.00
6/13/2010 0.00
6/14/2010 0.00
6/15/2010 0.00
6/16/2010 0.00
6/17/2010 0.00
6/18/2010 0.00
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 0.00
6/22/2010 0.00
6/23/2010 0.00
6/24/2010 0.00
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 0.00
6/29/2010 0.00
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.00
7/3/2010 0.00
7/4/2010 0.00
7/5/2010 0.00
7/6/2010 0.00
7/7/2010 0.00
7/8/2010 0.00
7/9/2010 0.00
7/10/2010 0.00
7/11/2010 0.00
7/12/2010 0.00
7/13/2010 0.00
7/14/2010 0.00
7/15/2010 0.00
7/16/2010 0.00
7/17/2010 0.00
7/18/2010 0.00
7/19/2010 0.00
7/20/2010 0.00
7/21/2010 0.00
7/22/2010
7/23/2010
7/24/2010
7/25/2010
7/26/2010
7/27/2010
7/28/2010
7/29/2010
7/30/2010
7/31/2010
8/1/2010
8/2/2010
8/3/2010
8/4/2010
8/5/2010
8/6/2010
8/7/2010
8/8/2010
8/9/2010
8/10/2010
8/11/2010
8/12/2010
8/13/2010
8/14/2010
8/15/2010
8/16/2010
8/17/2010
8/18/2010
8/19/2010
8/20/2010
8/21/2010
8/22/2010
8/23/2010
8/24/2010
8/25/2010
8/26/2010
8/27/2010
8/28/2010
8/29/2010
8/30/2010
8/31/2010
9/1/2010 0.00
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 0.00
9/5/2010 0.00
9/6/2010 0.00
9/7/2010 0.00
9/8/2010 0.00
9/9/2010 0.00
9/10/2010 0.00
9/11/2010 0.00
9/12/2010 0.00
9/13/2010 0.00
9/14/2010 0.00
9/15/2010 0.00
9/16/2010 0.00
9/17/2010 0.00
9/18/2010 0.18
9/19/2010 0.00
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 0.00
9/23/2010 0.00
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 0.00
9/27/2010 0.00
9/28/2010 0.00
9/29/2010 0.00
9/30/2010 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/11/2009 8:00 AM 0.00 0.0 M M M
10/12/2009 8:00 AM 0.00 0.0 M M M
10/13/2009 9:00 AM 0.57 M M M M
10/14/2009 8:00 AM 1.13 M M M M
10/15/2009 8:00 AM 0.00 0.0 M M M
10/16/2009 8:00 AM 0.00 0.0 M M M
10/17/2009 8:00 AM 0.00 0.0 M M M
10/18/2009 8:00 AM 0.00 0.0 M M M
10/19/2009 8:00 AM 0.00 0.0 M M M Trace of rain at 8:00 AM.
10/20/2009 8:00 AM 0.30 M M M M
10/22/2009 8:00 AM 0.00 0.0 M M M
11/7/2009 8:00 AM 0.11 M M M M
11/13/2009 8:00 AM 0.04 M M M M
11/16/2009 8:00 AM 0.02 M M M M
11/21/2009 8:00 AM 0.43 M M M M
11/28/2009 8:00 AM 0.18 M M M M
12/7/2009 8:00 AM 0.81 M M M M It was 35 degrees when I observed my rain guage. Pretty cold for the Bay Area at 7:30 AM.
12/11/2009 7:45 AM 0.25 M M M M
12/12/2009 4:00 PM 0.55 M M M M
12/13/2009 10:00 AM 0.64 M M M M
12/14/2009 8:00 AM 0.24 M M M M
12/17/2009 8:00 AM 0.02 M M M M
12/22/2009 8:00 AM 0.21 M M M M
12/27/2009 8:00 AM 0.64 M M M M
12/29/2009 8:00 AM 0.02 M M M M
12/30/2009 8:00 AM 0.09 M M M M
1/8/2010 8:00 AM 0.02 M M M M
1/12/2010 8:00 AM 0.16 M M M M
1/13/2010 8:00 AM 0.32 M M M M
1/17/2010 8:00 AM 0.02 M M M M
1/18/2010 8:00 AM 0.24 M M M M
1/19/2010 8:00 AM 1.03 M M M M
1/20/2010 8:00 AM 0.72 M M M M Heavy wind and rain started about 4 AM.
1/21/2010 8:00 AM 0.98 M M M M
1/22/2010 8:00 AM 0.98 M M M M
1/23/2010 8:00 AM 0.32 M M M M
1/24/2010 8:00 AM 0.12 M M M M
1/25/2010 8:00 AM 0.13 M M M M
1/26/2010 8:00 AM 0.42 M M M M
1/28/2010 8:00 AM 0.00 0.0 M M M
1/29/2010 8:00 AM 0.00 0.0 M M M
1/31/2010 8:00 AM 0.00 0.0 M M M
2/1/2010 8:00 AM 0.00 0.0 M M M
2/2/2010 8:00 AM 0.00 0.0 M M M
2/3/2010 8:00 AM 0.00 0.0 M M M
2/4/2010 8:00 AM 0.00 0.0 M M M
2/5/2010 8:00 AM 0.22 M M M M
2/6/2010 8:00 AM 0.21 M M M M
2/9/2010 8:00 AM 0.02 M M M M
2/10/2010 8:00 AM 0.22 M M M M
2/11/2010 8:00 AM 0.00 0.0 M M M
2/12/2010 8:00 AM 0.00 0.0 M M M
2/14/2010 8:00 AM 0.03 M M M M
2/22/2010 8:00 AM 0.53 M M M M
2/24/2010 8:00 AM 0.65 M M M M
2/25/2010 8:00 AM 0.03 M M M M
2/27/2010 2:00 PM 0.67 M M M M
3/3/2010 8:00 AM 0.99 M M M M
3/4/2010 8:00 AM 0.34 M M M M
3/9/2010 8:00 AM 0.06 M M M M
3/10/2010 8:00 AM 0.26 M M M M
3/13/2010 8:00 AM 0.88 M M M M
4/2/2010 7:00 AM 0.00 0.0 M M M
4/4/2010 7:00 AM 0.00 0.0 M M M
4/5/2010 8:00 AM 0.97 M M M M
4/6/2010 7:00 AM 0.00 0.0 M M M
4/7/2010 7:00 AM 0.00 0.0 M M M
4/8/2010 7:00 AM 0.00 0.0 M M M
4/9/2010 7:00 AM 0.00 0.0 M M M
4/10/2010 7:00 AM 0.00 0.0 M M M
4/12/2010 8:00 AM 1.05 M M M M
4/13/2010 8:00 AM 0.00 0.0 M M M
4/14/2010 8:00 AM 0.00 0.0 M M M
4/15/2010 8:00 AM 0.00 0.0 M M M
4/16/2010 8:00 AM 0.00 0.0 M M M
4/17/2010 8:00 AM 0.00 0.0 M M M
4/18/2010 8:00 AM 0.00 0.0 M M M
4/19/2010 8:00 AM 0.00 0.0 M M M
4/20/2010 9:00 AM 0.57 M M M M
4/21/2010 8:00 AM 0.05 M M M M
4/22/2010 8:00 AM 0.11 M M M M
4/27/2010 8:00 AM 0.02 M M M M
4/28/2010 8:00 AM 0.15 M M M M
4/29/2010 8:00 AM 0.07 M M M M
5/1/2010 7:00 AM 0.00 0.0 M M M
5/2/2010 7:00 AM 0.00 0.0 M M M
5/3/2010 7:00 AM 0.00 0.0 M M M
5/4/2010 7:00 AM 0.00 0.0 M M M
5/5/2010 7:00 AM 0.00 0.0 M M M
5/6/2010 7:00 AM 0.00 0.0 M M M
5/7/2010 7:00 AM 0.00 0.0 M M M
5/8/2010 7:00 AM 0.00 0.0 M M M
5/9/2010 7:00 AM 0.00 0.0 M M M
5/10/2010 8:00 AM 0.03 M M M M
5/11/2010 8:00 AM 0.30 M M M M
5/12/2010 8:00 AM 0.00 0.0 M M M
5/13/2010 7:00 AM 0.00 0.0 M M M
5/14/2010 7:00 AM 0.00 0.0 M M M
5/15/2010 7:00 AM 0.00 0.0 M M M
5/16/2010 7:00 AM 0.00 0.0 M M M
5/17/2010 7:00 AM 0.00 0.0 M M M
5/18/2010 7:00 AM 0.15 M M M M
5/19/2010 7:00 AM 0.00 0.0 M M M
5/20/2010 8:00 AM 0.01 M M M M
5/21/2010 8:00 AM 0.00 0.0 M M M
5/22/2010 7:00 AM 0.00 0.0 M M M
5/23/2010 7:00 AM 0.00 0.0 M M M
5/24/2010 8:00 AM 0.01 M M M M
5/25/2010 7:00 AM 0.00 0.0 M M M
5/26/2010 8:00 AM 0.47 M M M M
5/27/2010 7:00 AM 0.00 0.0 M M M
5/28/2010 8:00 AM 0.38 M M M M
5/29/2010 7:00 AM 0.00 0.0 M M M
5/30/2010 7:00 AM 0.00 0.0 M M M
5/31/2010 7:00 AM 0.00 0.0 M M M
6/1/2010 7:00 AM 0.00 0.0 M M M
6/2/2010 7:00 AM 0.00 0.0 M M M
6/3/2010 8:00 AM 0.01 M M M M
6/4/2010 7:00 AM 0.00 0.0 M M M
6/5/2010 7:00 AM 0.00 0.0 M M M
6/6/2010 7:00 AM 0.00 0.0 M M M
6/7/2010 7:00 AM 0.00 0.0 M M M
6/8/2010 7:00 AM 0.00 0.0 M M M
6/9/2010 8:00 AM 0.02 M M M M
6/10/2010 7:00 AM 0.00 0.0 M M M
6/11/2010 7:00 AM 0.00 0.0 M M M
6/12/2010 7:00 AM 0.00 0.0 M M M
6/13/2010 7:00 AM 0.00 0.0 M M M
6/14/2010 7:00 AM 0.00 0.0 M M M
6/15/2010 7:00 AM 0.00 0.0 M M M
6/16/2010 7:00 AM 0.00 0.0 M M M
6/17/2010 7:00 AM 0.00 0.0 M M M
6/18/2010 7:00 AM 0.00 0.0 M M M
6/19/2010 7:00 AM 0.00 0.0 M M M
6/20/2010 7:00 AM 0.00 0.0 M M M
6/21/2010 7:00 AM 0.00 0.0 M M M
6/22/2010 7:00 AM 0.00 0.0 M M M
6/23/2010 7:00 AM 0.00 0.0 M M M
6/24/2010 7:00 AM 0.00 0.0 M M M
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 7:00 AM 0.00 0.0 M M M
6/27/2010 7:00 AM 0.00 0.0 M M M
6/28/2010 7:00 AM 0.00 0.0 M M M
6/29/2010 7:00 AM 0.00 0.0 M M M
6/30/2010 7:00 AM 0.00 0.0 M M M
7/1/2010 7:00 AM 0.00 0.0 M M M
7/2/2010 7:00 AM 0.00 0.0 M M M
7/3/2010 7:00 AM 0.00 0.0 M M M
7/4/2010 7:00 AM 0.00 0.0 M M M
7/5/2010 7:00 AM 0.00 0.0 M M M
7/6/2010 7:00 AM 0.00 0.0 M M M
7/7/2010 7:00 AM 0.00 0.0 M M M
7/8/2010 7:00 AM 0.00 0.0 M M M
7/9/2010 7:00 AM 0.00 0.0 M M M
7/10/2010 7:00 AM 0.00 0.0 M M M
7/11/2010 7:00 AM 0.00 0.0 M M M
7/12/2010 7:00 AM 0.00 0.0 M M M
7/13/2010 7:00 AM 0.00 0.0 M M M
7/14/2010 7:00 AM 0.00 0.0 M M M
7/15/2010 7:00 AM 0.00 0.0 M M M
7/16/2010 7:00 AM 0.00 0.0 M M M
7/17/2010 7:00 AM 0.00 0.0 M M M
7/18/2010 7:00 AM 0.00 0.0 M M M
7/19/2010 7:00 AM 0.00 0.0 M M M
7/20/2010 7:00 AM 0.00 0.0 M M M
7/21/2010 7:00 AM 0.00 0.0 M M M
9/1/2010 7:00 AM 0.00 0.0 M M M
9/2/2010 7:00 AM 0.00 0.0 M M M
9/3/2010 7:00 AM 0.00 0.0 M M M
9/4/2010 7:00 AM 0.00 0.0 M M M
9/5/2010 7:00 AM 0.00 0.0 M M M
9/6/2010 7:00 AM 0.00 0.0 M M M
9/7/2010 7:00 AM 0.00 0.0 M M M
9/8/2010 7:00 AM 0.00 0.0 M M M
9/9/2010 7:00 AM 0.00 0.0 M M M
9/10/2010 7:00 AM 0.00 0.0 M M M
9/11/2010 7:00 AM 0.00 0.0 M M M
9/12/2010 7:00 AM 0.00 0.0 M M M
9/13/2010 7:00 AM 0.00 0.0 M M M
9/14/2010 7:00 AM 0.00 0.0 M M M
9/15/2010 7:00 AM 0.00 0.0 M M M
9/16/2010 7:00 AM 0.00 0.0 M M M
9/17/2010 7:00 AM 0.00 0.0 M M M
9/18/2010 8:00 AM 0.18 M M M M
9/19/2010 7:00 AM 0.00 0.0 M M M
9/20/2010 7:00 AM 0.00 0.0 M M M
9/21/2010 7:00 AM 0.00 0.0 M M M
9/22/2010 7:00 AM 0.00 0.0 M M M
9/23/2010 7:00 AM 0.00 0.0 M M M
9/24/2010 7:00 AM 0.00 0.0 M M M
9/25/2010 7:00 AM 0.00 0.0 M M M
9/26/2010 7:00 AM 0.00 0.0 M M M
9/27/2010 7:00 AM 0.00 0.0 M M M
9/28/2010 7:00 AM 0.00 0.0 M M M
9/29/2010 7:00 AM 0.00 0.0 M M M
9/30/2010 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
3/14/2010 3/30/2010 7:45 AM 17 0.36 M M We were on a Caribbean cruise and heard that there were two rainy days in our absence. Last night probably the biggest "storm" came in and it's supposed to continue on and off through the week. We saw lots of snow as we flew over Colorado, Utah, and the Sierras yesterday!



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