Station Overview Station Location
Station Number CA-SM-18 Latitude 37.5085
Station Name El Granada 0.7 W Longitude -122.47895
County San Mateo Elevation (ft) 78



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 16 1.51 4.03 12 4.03 12 0.00 0 0 10 2 0.0 0 0
Nov 16 3.20 2.57 11 2.57 11 0.00 0 0 10 1 0.0 0 0
Dec 16 5.20 4.73 10 4.73 10 0.00 0 0 10 0 0.0 0 0
Jan 17 5.62 9.73 18 9.73 18 0.00 0 0 17 1 0.0 0 0
Feb 17 5.23 8.32 19 8.32 19 0.00 0 0 16 3 0.0 0 0
March 17 3.99 3.74 13 1.54 7 2.20 6 1 6 1 0.0 0 0
April 17 1.79 3.27 12 3.27 12 0.00 0 0 11 1 0.0 0 0
May 17 1.03 0.02 7 0.02 7 0.00 0 0 1 6 0.0 0 0
June 17 0.28 0.32 4 0.32 4 0.00 0 0 2 2 0.0 0 0
July 17 0.10 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 17 0.19 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 17 0.34 0.07 2 0.07 2 0.00 0 0 2 0 0.0 0 0
Water Year Totals: 28.48" 36.80" 108 days 34.60" 102 2.20" 6 days 1 85 days 17 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
10/1/2016
10/2/2016
10/3/2016
10/4/2016 0.01
10/5/2016
10/6/2016
10/7/2016
10/8/2016
10/9/2016
10/10/2016
10/11/2016
10/12/2016
10/13/2016
10/14/2016 T
10/15/2016 0.58
10/16/2016 0.58
10/17/2016 0.88
10/18/2016
10/19/2016
10/20/2016
10/21/2016
10/22/2016
10/23/2016
10/24/2016
10/25/2016 0.10
10/26/2016 T
10/27/2016 0.03
10/28/2016 0.94
10/29/2016 0.05
10/30/2016 0.01
10/31/2016 0.85
11/1/2016 0.31
11/2/2016
11/3/2016
11/4/2016
11/5/2016
11/6/2016 0.02
11/7/2016 0.03
11/8/2016
11/9/2016
11/10/2016
11/11/2016
11/12/2016
11/13/2016
11/14/2016
11/15/2016
11/16/2016 0.04
11/17/2016
11/18/2016
11/19/2016 T
11/20/2016 0.42
11/21/2016 0.32
11/22/2016
11/23/2016 0.25
11/24/2016
11/25/2016
11/26/2016 0.44
11/27/2016 0.55
11/28/2016 0.19
11/29/2016
11/30/2016
12/1/2016 0.05
12/2/2016
12/3/2016
12/4/2016
12/5/2016
12/6/2016
12/7/2016
12/8/2016 0.45
12/9/2016 0.22
12/10/2016 0.21
12/11/2016 1.22
12/12/2016
12/13/2016
12/14/2016 0.17
12/15/2016 0.03
12/16/2016 1.60
12/17/2016
12/18/2016
12/19/2016
12/20/2016
12/21/2016
12/22/2016
12/23/2016 0.60
12/24/2016 0.18
12/25/2016
12/26/2016
12/27/2016
12/28/2016
12/29/2016
12/30/2016
12/31/2016
Day of YearDaily PrcpMultiday Prcp
1/1/2017
1/2/2017 0.07
1/3/2017 0.25
1/4/2017 0.99
1/5/2017 0.21
1/6/2017
1/7/2017 0.27
1/8/2017 0.94
1/9/2017 0.71
1/10/2017 0.32
1/11/2017 1.10
1/12/2017 0.42
1/13/2017 T
1/14/2017
1/15/2017
1/16/2017
1/17/2017
1/18/2017 0.05
1/19/2017 0.99
1/20/2017 1.44
1/21/2017 0.55
1/22/2017 0.58
1/23/2017 0.42
1/24/2017 0.42
1/25/2017
1/26/2017
1/27/2017
1/28/2017
1/29/2017
1/30/2017
1/31/2017
2/1/2017
2/2/2017 0.15
2/3/2017 0.42
2/4/2017 0.33
2/5/2017 T
2/6/2017 0.22
2/7/2017 0.82
2/8/2017 0.66
2/9/2017 0.20
2/10/2017 1.14
2/11/2017 T
2/12/2017
2/13/2017
2/14/2017
2/15/2017
2/16/2017 0.41
2/17/2017 0.34
2/18/2017 0.90
2/19/2017 0.04
2/20/2017 0.81
2/21/2017 1.59
2/22/2017 0.20
2/23/2017 T
2/24/2017
2/25/2017
2/26/2017
2/27/2017 0.09
2/28/2017
3/1/2017
3/2/2017
3/3/2017
3/4/2017 T
3/5/2017 1.17
3/6/2017 0.16
3/7/2017 0.08
3/8/2017
3/9/2017
3/10/2017
3/11/2017
3/12/2017
3/13/2017
3/14/2017
3/15/2017
3/16/2017 0.02
3/17/2017
3/18/2017
3/19/2017
3/20/2017
3/21/2017 **
3/22/2017 **
3/23/2017 **
3/24/2017 **
3/25/2017 **
3/26/2017 2.20
3/27/2017 0.06
3/28/2017
3/29/2017
3/30/2017 0.05
3/31/2017
Day of YearDaily PrcpMultiday Prcp
4/1/2017
4/2/2017
4/3/2017
4/4/2017
4/5/2017
4/6/2017
4/7/2017 1.35
4/8/2017 0.46
4/9/2017 0.11
4/10/2017
4/11/2017
4/12/2017 0.30
4/13/2017 0.18
4/14/2017 0.01
4/15/2017
4/16/2017
4/17/2017 0.27
4/18/2017 0.19
4/19/2017 0.04
4/20/2017 0.33
4/21/2017
4/22/2017
4/23/2017
4/24/2017
4/25/2017 T
4/26/2017 0.03
4/27/2017
4/28/2017
4/29/2017
4/30/2017
5/1/2017
5/2/2017
5/3/2017
5/4/2017
5/5/2017
5/6/2017
5/7/2017
5/8/2017
5/9/2017
5/10/2017
5/11/2017
5/12/2017
5/13/2017
5/14/2017
5/15/2017
5/16/2017
5/17/2017
5/18/2017
5/19/2017
5/20/2017
5/21/2017
5/22/2017 T
5/23/2017 T
5/24/2017 T
5/25/2017 0.02
5/26/2017 T
5/27/2017
5/28/2017
5/29/2017
5/30/2017 T
5/31/2017 T
6/1/2017 0.01
6/2/2017
6/3/2017
6/4/2017
6/5/2017
6/6/2017
6/7/2017
6/8/2017 T
6/9/2017 0.31
6/10/2017 T
6/11/2017
6/12/2017
6/13/2017
6/14/2017
6/15/2017
6/16/2017
6/17/2017
6/18/2017
6/19/2017
6/20/2017
6/21/2017
6/22/2017
6/23/2017
6/24/2017
6/25/2017
6/26/2017
6/27/2017
6/28/2017
6/29/2017
6/30/2017
Day of YearDaily PrcpMultiday Prcp
7/1/2017
7/2/2017
7/3/2017
7/4/2017
7/5/2017
7/6/2017
7/7/2017
7/8/2017
7/9/2017
7/10/2017
7/11/2017
7/12/2017
7/13/2017
7/14/2017
7/15/2017
7/16/2017
7/17/2017
7/18/2017
7/19/2017
7/20/2017
7/21/2017
7/22/2017
7/23/2017
7/24/2017
7/25/2017
7/26/2017
7/27/2017
7/28/2017
7/29/2017
7/30/2017
7/31/2017
8/1/2017
8/2/2017
8/3/2017
8/4/2017
8/5/2017
8/6/2017
8/7/2017
8/8/2017
8/9/2017
8/10/2017
8/11/2017
8/12/2017
8/13/2017
8/14/2017
8/15/2017
8/16/2017
8/17/2017
8/18/2017
8/19/2017
8/20/2017
8/21/2017
8/22/2017
8/23/2017
8/24/2017
8/25/2017
8/26/2017
8/27/2017
8/28/2017
8/29/2017
8/30/2017
8/31/2017
9/1/2017
9/2/2017
9/3/2017
9/4/2017
9/5/2017
9/6/2017
9/7/2017
9/8/2017
9/9/2017
9/10/2017
9/11/2017
9/12/2017
9/13/2017
9/14/2017
9/15/2017
9/16/2017
9/17/2017
9/18/2017 0.02
9/19/2017
9/20/2017
9/21/2017 0.05
9/22/2017
9/23/2017
9/24/2017
9/25/2017
9/26/2017
9/27/2017
9/28/2017
9/29/2017
9/30/2017



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/4/2016 6:52 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
10/14/2016 6:34 AM T M M M M sprinkles ahead of front...
10/15/2016 7:00 AM 0.58 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
10/16/2016 7:14 AM 0.58 M M M M same as yesterday...
10/17/2016 6:51 AM 0.88 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
10/25/2016 6:39 AM 0.10 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
10/26/2016 6:47 AM T M M M M fog drizzle
10/27/2016 7:01 AM 0.03 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
10/28/2016 6:51 AM 0.94 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
10/29/2016 8:15 AM 0.05 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
10/30/2016 7:53 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
10/31/2016 6:36 AM 0.85 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
11/1/2016 7:02 AM 0.31 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.14
11/6/2016 7:00 AM 0.02 M M M M morning drizzle, and not done...
11/7/2016 6:23 AM 0.03 M M M M end of drizzle from yesterday am
11/16/2016 6:45 AM 0.04 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.1 (build 2003)
11/19/2016 7:10 AM T M M M M sprinkles ahead of front, but nothing accumulated
11/20/2016 8:32 AM 0.42 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.3 (build 2005)
11/21/2016 6:45 AM 0.32 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.3 (build 2005)
11/23/2016 7:11 AM 0.25 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.3 (build 2005)
11/26/2016 9:00 AM 0.44 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
11/27/2016 7:45 AM 0.55 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
11/28/2016 6:57 AM 0.19 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/1/2016 6:45 AM 0.05 M M M M
12/8/2016 6:45 AM 0.45 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/9/2016 7:00 AM 0.22 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/10/2016 7:15 AM 0.21 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/11/2016 7:37 AM 1.22 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/14/2016 6:28 AM 0.17 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/15/2016 6:47 AM 0.03 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/16/2016 6:33 AM 1.60 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/23/2016 6:50 AM 0.60 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
12/24/2016 8:37 AM 0.18 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.4 (build 2006)
1/2/2017 8:31 AM 0.07 M M M M light rain at obs time
1/3/2017 7:29 AM 0.25 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.6 (build 2008)
1/4/2017 7:59 AM 0.99 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.6 (build 2008)
1/5/2017 7:13 AM 0.21 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.6 (build 2008)
1/7/2017 8:20 AM 0.27 M M M M
1/8/2017 8:30 AM 0.94 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/9/2017 6:54 AM 0.71 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/10/2017 6:42 AM 0.32 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/11/2017 6:31 AM 1.10 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/12/2017 6:42 AM 0.42 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/13/2017 7:00 AM T M M M M
1/18/2017 6:54 AM 0.05 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/19/2017 6:39 AM 0.99 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/20/2017 5:42 AM 1.44 M M M M most from torrential downpour after 4 AM
1/21/2017 7:25 AM 0.55 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/22/2017 8:04 AM 0.58 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.7 (build 2009)
1/23/2017 8:00 AM 0.42 M M M M
1/24/2017 7:30 AM 0.42 M M M M
2/2/2017 6:45 AM 0.15 M M M M
2/3/2017 7:00 AM 0.42 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/4/2017 8:36 AM 0.33 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/5/2017 8:00 AM T M M M M occasional sprinkles...
2/6/2017 6:36 AM 0.22 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/7/2017 6:27 AM 0.82 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/8/2017 6:51 AM 0.66 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/9/2017 6:53 AM 0.20 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/10/2017 6:55 AM 1.14 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/11/2017 7:00 AM T M M M M
2/16/2017 6:45 AM 0.41 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/17/2017 6:22 AM 0.34 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/18/2017 7:00 AM 0.90 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/19/2017 12:25 PM 0.04 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/20/2017 8:07 AM 0.81 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/21/2017 6:14 AM 1.59 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/22/2017 6:50 AM 0.20 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
2/23/2017 6:45 AM T M M M M
2/27/2017 6:52 AM 0.09 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
3/4/2017 7:16 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
3/5/2017 9:15 AM 1.17 M M M M
3/6/2017 6:30 AM 0.16 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
3/7/2017 6:52 AM 0.08 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
3/16/2017 6:51 AM 0.02 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
3/27/2017 6:46 AM 0.06 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
3/30/2017 6:35 AM 0.05 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/7/2017 8:30 AM 1.35 M M M M
4/8/2017 7:00 AM 0.46 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/9/2017 8:00 AM 0.11 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/12/2017 7:53 AM 0.30 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/13/2017 6:48 AM 0.18 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/14/2017 6:45 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/17/2017 6:48 AM 0.27 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/18/2017 7:06 AM 0.19 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/19/2017 6:44 AM 0.04 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/20/2017 7:06 AM 0.33 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/25/2017 7:00 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
4/26/2017 6:28 AM 0.03 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.8 (build 20010)
5/22/2017 6:52 AM T M M M M fog drizzle
5/23/2017 6:48 AM T M M M M fog drizzle
5/24/2017 7:02 AM T M M M M fog drizzle
5/25/2017 7:00 AM 0.02 M M M M ...barely, but close enough
5/26/2017 7:00 AM T M M M M fog drizzle
5/30/2017 6:57 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.0.9 (build 20011)
5/31/2017 7:00 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.0.9 (build 20011)
6/1/2017 6:43 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 2.0.9 (build 20011)
6/8/2017 7:00 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.0.9 (build 20011)
6/9/2017 7:00 AM 0.31 M M M M drizzle can really add up
6/10/2017 7:00 AM T M M M M
9/18/2017 7:00 AM 0.02 M M M M
9/21/2017 6:46 AM 0.05 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
3/21/2017 3/26/2017 8:00 AM 6 2.20 M M includes several separate rain events



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
1/20/2017 4:20 AM 1/4" Pea Size 1/4" Pea Size NA 5 1min no damage Intermittent True After rain
1/23/2017 8:20 AM hail encountered at the summit of highway 92 east of Half Moon Bay, about same time as a massive amount of hail was reported back in town (HMB) 1/4" Pea Size 1/4" Pea Size Rice False
1/23/2017 8:30 AM 5 miles SE of CA-SM-20... massive amount of hail for this area, lots of video available; hail covered the ground completely 3/8" 1/4" Pea Size Rice White Ice Continuous False
1/23/2017 7:00 PM Minor event, but hail nonetheless Rice Rice Rice 1 10min Intermittent True Same time as rain