Station Overview Station Location
Station Number CA-SM-17 Latitude 37.550354
Station Name San Mateo 1.2 SW Longitude -122.329503
County San Mateo Elevation (ft) 114



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 12 1.15 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 12 2.58 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 12 4.23 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 13 4.51 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 13 4.43 0.41 3 0.41 3 0.00 0 0 1 0 0.0 0 0
March 13 3.30 0.60 16 0.60 16 0.00 0 0 4 3 0.0 0 0
April 13 1.49 0.80 27 0.00 14 0.80 13 4 0 0 0.0 0 0
May 13 0.63 0.01 31 0.01 31 0.00 0 0 1 4 0.0 0 0
June 13 0.14 0.00 22 0.00 22 0.00 0 0 0 0 0.0 0 0
July 13 0.03 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 13 0.10 0.01 13 0.00 9 0.01 4 1 0 1 0.0 0 0
Sept 13 0.16 0.37 31 0.00 17 0.37 14 4 0 1 0.0 0 0
Water Year Totals: 22.75" 2.20" 143 days 1.02" 112 1.18" 31 days 9 6 days 9 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
10/1/2012
10/2/2012
10/3/2012
10/4/2012
10/5/2012
10/6/2012
10/7/2012
10/8/2012
10/9/2012
10/10/2012
10/11/2012
10/12/2012
10/13/2012
10/14/2012
10/15/2012
10/16/2012
10/17/2012
10/18/2012
10/19/2012
10/20/2012
10/21/2012
10/22/2012
10/23/2012
10/24/2012
10/25/2012
10/26/2012
10/27/2012
10/28/2012
10/29/2012
10/30/2012
10/31/2012
11/1/2012
11/2/2012
11/3/2012
11/4/2012
11/5/2012
11/6/2012
11/7/2012
11/8/2012
11/9/2012
11/10/2012
11/11/2012
11/12/2012
11/13/2012
11/14/2012
11/15/2012
11/16/2012
11/17/2012
11/18/2012
11/19/2012
11/20/2012
11/21/2012
11/22/2012
11/23/2012
11/24/2012
11/25/2012
11/26/2012
11/27/2012
11/28/2012
11/29/2012
11/30/2012
12/1/2012
12/2/2012
12/3/2012
12/4/2012
12/5/2012
12/6/2012
12/7/2012
12/8/2012
12/9/2012
12/10/2012
12/11/2012
12/12/2012
12/13/2012
12/14/2012
12/15/2012
12/16/2012
12/17/2012
12/18/2012
12/19/2012
12/20/2012
12/21/2012
12/22/2012
12/23/2012
12/24/2012
12/25/2012
12/26/2012
12/27/2012
12/28/2012
12/29/2012
12/30/2012
12/31/2012
Day of YearDaily PrcpMultiday Prcp
1/1/2013
1/2/2013
1/3/2013
1/4/2013
1/5/2013
1/6/2013
1/7/2013
1/8/2013
1/9/2013
1/10/2013
1/11/2013
1/12/2013
1/13/2013
1/14/2013
1/15/2013
1/16/2013
1/17/2013
1/18/2013
1/19/2013
1/20/2013
1/21/2013
1/22/2013
1/23/2013
1/24/2013
1/25/2013
1/26/2013
1/27/2013
1/28/2013
1/29/2013
1/30/2013
1/31/2013
2/1/2013
2/2/2013
2/3/2013
2/4/2013
2/5/2013
2/6/2013
2/7/2013
2/8/2013
2/9/2013
2/10/2013
2/11/2013
2/12/2013
2/13/2013
2/14/2013
2/15/2013
2/16/2013
2/17/2013
2/18/2013
2/19/2013
2/20/2013 0.41
2/21/2013 0.00
2/22/2013 0.00
2/23/2013
2/24/2013
2/25/2013
2/26/2013
2/27/2013
2/28/2013
3/1/2013
3/2/2013
3/3/2013 0.00
3/4/2013 T
3/5/2013 0.00
3/6/2013 0.26
3/7/2013 0.00
3/8/2013 0.13
3/9/2013
3/10/2013
3/11/2013 0.00
3/12/2013 0.00
3/13/2013 0.00
3/14/2013 0.00
3/15/2013 0.00
3/16/2013
3/17/2013
3/18/2013
3/19/2013
3/20/2013 0.06
3/21/2013 T
3/22/2013
3/23/2013
3/24/2013
3/25/2013
3/26/2013
3/27/2013
3/28/2013 T
3/29/2013 0.00
3/30/2013
3/31/2013 0.15
Day of YearDaily PrcpMultiday Prcp
4/1/2013 **
4/2/2013 **
4/3/2013 **
4/4/2013 **
4/5/2013 0.76
4/6/2013 0.00
4/7/2013 **
4/8/2013 0.04
4/9/2013 0.00
4/10/2013 0.00
4/11/2013 0.00
4/12/2013 0.00
4/13/2013
4/14/2013
4/15/2013
4/16/2013 0.00
4/17/2013 0.00
4/18/2013 0.00
4/19/2013 0.00
4/20/2013 **
4/21/2013 **
4/22/2013 0.00
4/23/2013 0.00
4/24/2013 0.00
4/25/2013 0.00
4/26/2013 0.00
4/27/2013 **
4/28/2013 **
4/29/2013 0.00
4/30/2013 0.00
5/1/2013 0.00
5/2/2013 0.00
5/3/2013 0.00
5/4/2013 0.00
5/5/2013 0.00
5/6/2013 T
5/7/2013 0.01
5/8/2013 0.00
5/9/2013 0.00
5/10/2013 0.00
5/11/2013 0.00
5/12/2013 0.00
5/13/2013 0.00
5/14/2013 0.00
5/15/2013 0.00
5/16/2013 T
5/17/2013 T
5/18/2013 0.00
5/19/2013 0.00
5/20/2013 0.00
5/21/2013 0.00
5/22/2013 0.00
5/23/2013 0.00
5/24/2013 0.00
5/25/2013 0.00
5/26/2013 0.00
5/27/2013 0.00
5/28/2013 0.00
5/29/2013 T
5/30/2013 0.00
5/31/2013 0.00
6/1/2013 0.00
6/2/2013 0.00
6/3/2013 0.00
6/4/2013 0.00
6/5/2013 0.00
6/6/2013 0.00
6/7/2013 0.00
6/8/2013 0.00
6/9/2013 0.00
6/10/2013 0.00
6/11/2013 0.00
6/12/2013 0.00
6/13/2013 0.00
6/14/2013 0.00
6/15/2013 0.00
6/16/2013 0.00
6/17/2013 0.00
6/18/2013 0.00
6/19/2013 0.00
6/20/2013 0.00
6/21/2013 0.00
6/22/2013 0.00
6/23/2013
6/24/2013
6/25/2013
6/26/2013
6/27/2013
6/28/2013
6/29/2013
6/30/2013
Day of YearDaily PrcpMultiday Prcp
7/1/2013
7/2/2013
7/3/2013
7/4/2013
7/5/2013
7/6/2013
7/7/2013
7/8/2013
7/9/2013
7/10/2013
7/11/2013
7/12/2013
7/13/2013
7/14/2013
7/15/2013
7/16/2013
7/17/2013
7/18/2013
7/19/2013
7/20/2013
7/21/2013
7/22/2013
7/23/2013
7/24/2013
7/25/2013
7/26/2013
7/27/2013
7/28/2013
7/29/2013
7/30/2013
7/31/2013
8/1/2013
8/2/2013
8/3/2013
8/4/2013
8/5/2013
8/6/2013
8/7/2013
8/8/2013
8/9/2013
8/10/2013
8/11/2013
8/12/2013
8/13/2013
8/14/2013
8/15/2013
8/16/2013
8/17/2013
8/18/2013
8/19/2013 0.00
8/20/2013 0.00
8/21/2013 0.00
8/22/2013 0.00
8/23/2013 T
8/24/2013 **
8/25/2013 **
8/26/2013 M 0.01
8/27/2013 0.00
8/28/2013 0.00
8/29/2013 0.00
8/30/2013 0.00
8/31/2013 **
9/1/2013 **
9/2/2013 **
9/3/2013 0.00
9/4/2013 0.00
9/5/2013 0.00
9/6/2013 0.00
9/7/2013 **
9/8/2013 **
9/9/2013 0.00 0.00
9/10/2013 0.00
9/11/2013 0.00
9/12/2013 0.00
9/13/2013 0.00
9/14/2013 **
9/15/2013 **
9/16/2013 **
9/17/2013 **
9/18/2013 0.00
9/19/2013 0.00
9/20/2013 0.00
9/21/2013 **
9/22/2013 **
9/23/2013 0.37
9/24/2013 0.00
9/25/2013 0.00
9/26/2013 0.00
9/27/2013 0.00
9/28/2013 0.00
9/29/2013 0.00
9/30/2013 T



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
2/20/2013 7:30 AM 0.41 M M M M most fell before 11:00 AM on 2/19
2/21/2013 8:00 AM 0.00 0.0 M M M
2/22/2013 7:00 AM 0.00 0.0 M M M
3/3/2013 8:00 AM 0.00 0.0 M M M
3/4/2013 7:30 AM T 0.0 M M M no accumulation, but driving required wipers for light mist this AM
3/5/2013 7:00 AM 0.00 0.0 M M M
3/6/2013 8:00 AM 0.26 M M M M accumulated overnight 3/5-6
3/7/2013 7:00 AM 0.00 0.0 M M M
3/8/2013 7:00 AM 0.13 M M M M
3/11/2013 8:00 AM 0.00 0.0 M M M
3/12/2013 7:00 AM 0.00 0.0 M M M
3/13/2013 8:00 AM 0.00 0.0 M M M
3/14/2013 8:00 AM 0.00 0.0 M M M
3/15/2013 7:00 AM 0.00 0.0 M M M
3/20/2013 7:00 AM 0.06 M M M M
3/21/2013 7:30 AM T M M M M definite accumulation, but not quite 0.01
3/28/2013 7:30 AM T M M M M so close, but not quite 0.01
3/29/2013 7:30 AM 0.00 0.0 M M M
3/31/2013 11:30 AM 0.15 M M M M
4/6/2013 12:00 PM 0.00 0.0 M M M
4/9/2013 7:30 AM 0.00 0.0 M M M
4/10/2013 7:30 AM 0.00 0.0 M M M
4/11/2013 7:30 AM 0.00 0.0 M M M
4/12/2013 7:30 AM 0.00 0.0 M M M
4/16/2013 7:30 AM 0.00 0.0 M M M
4/17/2013 7:30 AM 0.00 0.0 M M M
4/18/2013 7:00 AM 0.00 0.0 M M M
4/19/2013 7:30 AM 0.00 0.0 M M M
4/23/2013 7:00 AM 0.00 0.0 M M M
4/24/2013 7:30 AM 0.00 0.0 M M M overcast skies
4/25/2013 7:00 AM 0.00 0.0 M M M
4/26/2013 7:30 AM 0.00 0.0 M M M
4/30/2013 7:00 AM 0.00 0.0 M M M
5/1/2013 7:30 AM 0.00 0.0 M M M
5/2/2013 7:30 AM 0.00 0.0 M M M
5/3/2013 8:00 AM 0.00 0.0 M M M
5/4/2013 8:00 AM 0.00 0.0 M M M
5/5/2013 8:00 AM 0.00 0.0 M M M
5/6/2013 8:00 AM T M M M M no actual reading; gauge was not in place for this event; NOTE: students reported nickel-sized hail from the area near intersection of hwys 101 and 92 about 11 AM on 5/5
5/7/2013 7:00 AM 0.01 M M M M this is a minimum value; the gauge was set outside during the brief downpour at about 11:45 AM on 5/6
5/8/2013 7:00 AM 0.00 0.0 M M M
5/9/2013 7:00 AM 0.00 0.0 M M M
5/10/2013 7:00 AM 0.00 0.0 M M M
5/11/2013 9:00 AM 0.00 0.0 M M M
5/12/2013 8:00 AM 0.00 0.0 M M M
5/13/2013 7:00 AM 0.00 0.0 M M M
5/14/2013 7:00 AM 0.00 0.0 M M M
5/15/2013 7:30 AM 0.00 0.0 M M M
5/16/2013 7:00 AM T M M M M few drops at obs time, nothing more
5/17/2013 7:00 AM T M M M M definite accumulation, but less than 0.01; occurred sometime between 7 and 10 AM on 5/16
5/18/2013 8:00 AM 0.00 0.0 M M M
5/19/2013 8:00 AM 0.00 0.0 M M M
5/20/2013 8:00 AM 0.00 0.0 M M M
5/21/2013 7:00 AM 0.00 0.0 M M M
5/22/2013 8:00 AM 0.00 0.0 M M M
5/23/2013 8:00 AM 0.00 0.0 M M M
5/24/2013 8:00 AM 0.00 0.0 M M M
5/25/2013 8:00 AM 0.00 0.0 M M M
5/26/2013 8:00 AM 0.00 0.0 M M M
5/27/2013 8:00 AM 0.00 0.0 M M M
5/28/2013 8:00 AM 0.00 0.0 M M M UNCERTAIN, IGNORE THIS ENTRY?
5/29/2013 7:30 AM T M M M M no accumulation; but a trace observed on ws while driving
5/30/2013 7:30 AM 0.00 0.0 M M M
5/31/2013 8:00 AM 0.00 0.0 M M M
6/1/2013 8:00 AM 0.00 0.0 M M M
6/2/2013 8:00 AM 0.00 0.0 M M M
6/3/2013 8:00 AM 0.00 0.0 M M M
6/4/2013 8:00 AM 0.00 0.0 M M M
6/5/2013 8:00 AM 0.00 0.0 M M M
6/6/2013 8:00 AM 0.00 0.0 M M M
6/7/2013 8:00 AM 0.00 0.0 M M M
6/8/2013 8:00 AM 0.00 0.0 M M M
6/9/2013 8:00 AM 0.00 0.0 M M M
6/10/2013 8:00 AM 0.00 0.0 M M M
6/11/2013 8:00 AM 0.00 0.0 M M M
6/12/2013 8:00 AM 0.00 0.0 M M M
6/13/2013 8:00 AM 0.00 0.0 M M M
6/14/2013 8:00 AM 0.00 0.0 M M M
6/15/2013 8:00 AM 0.00 0.0 M M M
6/16/2013 8:00 AM 0.00 0.0 M M M
6/17/2013 8:00 AM 0.00 0.0 M M M
6/18/2013 8:00 AM 0.00 0.0 M M M
6/19/2013 8:00 AM 0.00 0.0 M M M
6/20/2013 8:00 AM 0.00 0.0 M M M
6/21/2013 8:00 AM 0.00 0.0 M M M
6/22/2013 8:00 AM 0.00 0.0 M M M
8/19/2013 7:30 AM 0.00 0.0 M M M
8/20/2013 7:15 AM 0.00 0.0 M M M
8/21/2013 7:00 AM 0.00 0.0 M M M
8/22/2013 7:00 AM 0.00 0.0 M M M
8/23/2013 7:15 AM T M M M M no accumulation, but occasional v. light mist
8/26/2013 7:15 AM M M M M M * this daily precip entry was superceded by a multi-day report of 0.01; the gauge was not in place :-( so the value was estimated/based solely on the wetness of the roads and parking lot. On the bright side: the gauge IS in place now :-)
8/27/2013 7:00 AM 0.00 0.0 M M M
8/28/2013 7:30 AM 0.00 0.0 M M M
8/29/2013 7:15 AM 0.00 0.0 M M M
8/30/2013 7:15 AM 0.00 0.0 M M M super humid; gauge covered with condensation
9/4/2013 7:15 AM 0.00 0.0 M M M
9/5/2013 7:15 AM 0.00 0.0 M M M
9/6/2013 7:15 AM 0.00 0.0 M M M
9/9/2013 7:15 AM 0.00 0.0 M M M
9/10/2013 7:15 AM 0.00 0.0 M M M trace while driving in the area, but nothing evident in the gauge
9/11/2013 7:15 AM 0.00 0.0 M M M
9/12/2013 7:15 AM 0.00 0.0 M M M overcast; v. light mist nearby while driving, but no evidence of any at site
9/13/2013 7:00 AM 0.00 0.0 M M M
9/19/2013 7:15 AM 0.00 0.0 M M M
9/20/2013 7:15 AM 0.00 0.0 M M M
9/24/2013 7:15 AM 0.00 0.0 M M M
9/25/2013 7:30 AM 0.00 0.0 M M M
9/26/2013 7:30 AM 0.00 0.0 M M M
9/27/2013 7:15 AM 0.00 0.0 M M M
9/28/2013 8:30 AM 0.00 0.0 M M M clear skies
9/29/2013 10:00 AM 0.00 0.0 M M M
9/30/2013 8:30 AM T M M M M drops covering funnel, but nothing accumulated; v.light mist at obs. time



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
4/1/2013 4/05/2013 5:00 PM 5 0.76 M M
4/7/2013 4/08/2013 7:00 AM 2 0.04 M M previous check 4/6 at 12:00 PM
4/20/2013 4/22/2013 7:00 AM 3 0.00 M M
4/27/2013 4/29/2013 8:00 AM 3 0.00 M M
8/24/2013 8/26/2013 7:15 AM 3 0.01 M M * this multi-day report supercedes the daily precip (=NA); the gauge was not in place :-( so the value was estimated/based solely on the wetness of the roads and parking lot. On the bright side: the gauge IS in place now :-)
8/31/2013 9/03/2013 7:30 AM 4 0.00 M M
9/7/2013 9/09/2013 7:15 AM 3 0.00 M M
9/14/2013 9/18/2013 7:15 AM 5 0.00 M M
9/21/2013 9/23/2013 7:15 AM 3 0.37 M M most likely accumulated during 9/21



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