Station Overview Station Location
Station Number CA-NV-44 Latitude 39.24078
Station Name Grass Valley 1.3 N Longitude -121.058327
County Nevada Elevation (ft) 2761



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 2.90 8.26 30 5.05 7 3.21 23 5 6 0 0.0 0 0
Nov 16 7.06 6.95 31 0.59 3 6.36 28 9 2 0 0.0 0 0
Dec 16 10.97 12.50 32 0.00 0 12.50 32 6 0 0 0.0 0 0
Jan 17 9.97 24.26 31 3.46 3 20.80 28 5 3 0 0.0 0 1
Feb 17 9.52 20.48 28 0.00 0 20.48 28 6 0 0 0.0 0 0
March 17 8.95 3.27 31 0.00 0 3.27 31 4 0 0 0.0 0 0
April 17 4.40 7.62 22 0.00 0 7.62 22 6 0 0 0.0 0 0
May 17 2.55 0.00 10 0.00 1 0.00 9 1 0 0 0.0 0 0
June 17 0.71 0.28 30 0.00 0 0.28 30 1 0 0 0.0 0 0
July 17 0.02 0.00 31 0.00 0 0.00 31 2 0 0 0.0 0 0
Aug 17 0.18 0.00 31 0.00 0 0.00 31 5 0 0 0.0 0 0
Sept 17 1.01 0.00 30 0.00 0 0.00 30 1 0 0 0.0 0 0
Water Year Totals: 58.24" 83.62" 337 days 9.10" 14 74.52" 323 days 51 11 days 0 days 0.0" 0 days 1 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 0.10
10/5/2016 **
10/6/2016 **
10/7/2016 **
10/8/2016 **
10/9/2016 **
10/10/2016 **
10/11/2016 0.00
10/12/2016 **
10/13/2016 **
10/14/2016 0.58
10/15/2016 2.06
10/16/2016 **
10/17/2016 **
10/18/2016 2.53
10/19/2016 **
10/20/2016 **
10/21/2016 **
10/22/2016 **
10/23/2016 0.00
10/24/2016 0.03
10/25/2016 0.48
10/26/2016 0.04
10/27/2016 0.00
10/28/2016 1.76
10/29/2016
10/30/2016 0.68
10/31/2016 **
11/1/2016 **
11/2/2016 0.58 1.03
11/3/2016 **
11/4/2016 0.00
11/5/2016 **
11/6/2016 **
11/7/2016 **
11/8/2016 **
11/9/2016 0.02
11/10/2016 **
11/11/2016 **
11/12/2016 **
11/13/2016 **
11/14/2016 **
11/15/2016 **
11/16/2016 **
11/17/2016 0.24
11/18/2016 **
11/19/2016 0.00
11/20/2016 **
11/21/2016 2.33
11/22/2016 **
11/23/2016 0.65
11/24/2016 0.01
11/25/2016 0.00
11/26/2016 **
11/27/2016 1.87
11/28/2016 **
11/29/2016 0.22
11/30/2016 **
12/1/2016 **
12/2/2016 **
12/3/2016 **
12/4/2016 **
12/5/2016 **
12/6/2016 **
12/7/2016 **
12/8/2016 **
12/9/2016 1.06
12/10/2016 **
12/11/2016 6.62
12/12/2016 **
12/13/2016 **
12/14/2016 **
12/15/2016 **
12/16/2016 3.80
12/17/2016 **
12/18/2016 **
12/19/2016 **
12/20/2016 **
12/21/2016 **
12/22/2016 0.03
12/23/2016 **
12/24/2016 **
12/25/2016 **
12/26/2016 0.74
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 **
1/3/2017 1.82
1/4/2017 2.13
1/5/2017 0.89
1/6/2017 **
1/7/2017 **
1/8/2017 **
1/9/2017 6.80
1/10/2017 **
1/11/2017 6.78
1/12/2017 **
1/13/2017 **
1/14/2017 **
1/15/2017 **
1/16/2017 0.47
1/17/2017 **
1/18/2017 **
1/19/2017 **
1/20/2017 **
1/21/2017 **
1/22/2017 **
1/23/2017 4.93
1/24/2017 0.44
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 **
2/3/2017 **
2/4/2017 2.76
2/5/2017 **
2/6/2017 **
2/7/2017 **
2/8/2017 6.86
2/9/2017 **
2/10/2017 **
2/11/2017 4.79
2/12/2017 **
2/13/2017 **
2/14/2017 **
2/15/2017 **
2/16/2017 **
2/17/2017 **
2/18/2017 2.75
2/19/2017 **
2/20/2017 **
2/21/2017 3.11
2/22/2017 **
2/23/2017 **
2/24/2017 0.21
2/25/2017 **
2/26/2017 **
2/27/2017 **
2/28/2017 **
3/1/2017 **
3/2/2017 **
3/3/2017 **
3/4/2017 **
3/5/2017 **
3/6/2017 **
3/7/2017 **
3/8/2017 **
3/9/2017 **
3/10/2017 **
3/11/2017 **
3/12/2017 **
3/13/2017 0.00
3/14/2017 **
3/15/2017 **
3/16/2017 **
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 2.60
3/26/2017 **
3/27/2017 0.52
3/28/2017 **
3/29/2017 **
3/30/2017 **
3/31/2017 0.15
Day of YearDaily PrcpMultiday Prcp
4/1/2017 **
4/2/2017 **
4/3/2017 **
4/4/2017 **
4/5/2017 0.00
4/6/2017 **
4/7/2017 **
4/8/2017 4.07
4/9/2017 **
4/10/2017 **
4/11/2017 0.03
4/12/2017 **
4/13/2017 **
4/14/2017 **
4/15/2017 **
4/16/2017 1.56
4/17/2017 **
4/18/2017 **
4/19/2017 1.65
4/20/2017 **
4/21/2017 **
4/22/2017 0.31
4/23/2017
4/24/2017
4/25/2017
4/26/2017
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 0.00
5/20/2017
5/21/2017
5/22/2017
5/23/2017 **
5/24/2017 **
5/25/2017 **
5/26/2017 **
5/27/2017 **
5/28/2017 **
5/29/2017 0.00
5/30/2017 **
5/31/2017 **
6/1/2017 **
6/2/2017 **
6/3/2017 **
6/4/2017 **
6/5/2017 **
6/6/2017 **
6/7/2017 **
6/8/2017 **
6/9/2017 **
6/10/2017 **
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 0.28
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 0.00
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 0.00
8/1/2017 **
8/2/2017 **
8/3/2017 **
8/4/2017 **
8/5/2017 T
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 0.00
8/15/2017 **
8/16/2017 0.00
8/17/2017 **
8/18/2017 **
8/19/2017 **
8/20/2017 **
8/21/2017 0.00
8/22/2017 **
8/23/2017 **
8/24/2017 **
8/25/2017 **
8/26/2017 **
8/27/2017 **
8/28/2017 **
8/29/2017 0.00
8/30/2017 **
8/31/2017 **
9/1/2017 **
9/2/2017 0.00
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 **
9/19/2017 **
9/20/2017 **
9/21/2017 **
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
10/15/2016 8:00 AM 2.06 M M M M
10/24/2016 8:00 AM 0.03 M M M M Thunder and ligtning at 3:00 AM. Fortunately no wildfires started due to 3 inches of precipitation last week.
10/25/2016 8:00 AM 0.48 M M M M
10/26/2016 8:00 AM 0.04 M M M M
10/27/2016 8:00 AM 0.00 0.0 M M M
10/28/2016 8:00 AM 1.76 M M M M
10/30/2016 8:00 AM 0.68 M M M M Heavy rain and wind gusts of near 30 mph in Grass Valley area of the Sierra foothills
11/2/2016 8:00 AM 0.58 M M M M
11/24/2016 8:00 AM 0.01 M M M M
11/25/2016 8:00 AM 0.00 0.0 M M M
1/4/2017 8:00 AM 2.13 T 0.00 0.0 0.00
1/5/2017 8:00 AM 0.89 M M M M
1/24/2017 8:00 AM 0.44 0.0 0.00 0.6 0.40
5/19/2017 8:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/27/2016 10/04/2016 8:00 AM 8 0.10 M M
10/5/2016 10/11/2016 8:00 AM 7 0.00 M M
10/12/2016 10/14/2016 8:00 AM 3 0.58 M M
10/16/2016 10/18/2016 8:00 AM 3 2.53 M M
10/19/2016 10/23/2016 8:00 AM 5 0.00 M M
10/31/2016 11/02/2016 8:00 AM 3 1.03 M M
11/3/2016 11/04/2016 8:00 AM 2 0.00 M M
11/5/2016 11/09/2016 8:00 AM 5 0.02 M M
11/10/2016 11/17/2016 8:00 AM 8 0.24 M M
11/18/2016 11/19/2016 8:00 AM 2 0.00 M M
11/20/2016 11/21/2016 8:00 AM 2 2.33 0.0 0.00
11/22/2016 11/23/2016 8:00 AM 2 0.65 M M
11/26/2016 11/27/2016 8:00 AM 2 1.87 M M
11/28/2016 11/29/2016 8:00 AM 2 0.22 M M
11/30/2016 12/09/2016 8:00 AM 10 1.06 M M
12/10/2016 12/11/2016 8:00 AM 2 6.62 M M Heavy rain over a period of 24 hours. Serious street, basement and stream flooding in Nevada City and Grass Valley, California
12/12/2016 12/14/2016 8:00 AM 3 0.25 M M
12/14/2016 12/16/2016 8:00 AM 3 3.80 M M Continued street and stream flooding. Over 4 inches in 24 hours in the Sierra foothills of California.
12/17/2016 12/22/2016 8:00 AM 6 0.03 M M
12/23/2016 12/26/2016 8:00 AM 4 0.74 T 0.00
12/27/2016 1/03/2017 8:00 AM 8 1.82 2.8 1.39
1/6/2017 1/09/2017 8:00 AM 4 6.80 0.0 0.00 Heavy rain, wind gusts to 25 mph, fallen trees and power poles and flooding of local streams in the Sierra foothill communities of Grass Valley and Nevada City
1/10/2017 1/11/2017 8:00 AM 2 6.78 0.0 0.00 13.5 inches of rain in last 48 hours, major river flooding in Nevada City, wind gusts to 35 mph. Interstate 80 and Highway 49 blocked by mudslides in Nevada County.
1/12/2017 1/16/2017 8:00 AM 5 0.47 0.0 0.00
1/17/2017 1/23/2017 8:00 AM 7 4.93 1.8 0.65
1/25/2017 2/04/2017 8:00 AM 11 2.76 T T
2/5/2017 2/08/2017 8:00 AM 4 6.86 0.0 0.00 Wind gusts to 30 mph, many local streams at flood level and heavy rain in last 48 hours in Nevada County California
2/9/2017 2/11/2017 8:00 AM 3 4.79 0.0 0.00 Continued local stream flooding, mudslides, sinkholes due to recent heavy rain in Nevada County, CA.
2/12/2017 2/18/2017 8:00 AM 7 2.75 0.0 0.00
2/19/2017 2/21/2017 8:00 AM 3 3.11 0.0 0.00
2/22/2017 2/24/2017 8:00 AM 3 0.21 0.5 0.13
2/25/2017 3/13/2017 8:00 AM 17 0.00 0.0 0.00
3/14/2017 3/25/2017 8:00 AM 12 2.60 0.0 0.00
3/26/2017 3/27/2017 8:00 AM 2 0.52 0.0 0.00
3/28/2017 3/31/2017 8:00 AM 4 0.15 0.0 0.00
4/1/2017 4/05/2017 8:00 AM 5 0.00 0.0 0.00
4/6/2017 4/08/2017 8:00 AM 3 4.07 0.0 0.00
4/9/2017 4/11/2017 8:00 AM 3 0.03 T T
4/12/2017 4/16/2017 8:00 AM 5 1.56 0.0 0.00 Heavy winds, sleet and thunderstorms during the reporting period.
4/17/2017 4/19/2017 8:00 AM 3 1.65 0.0 0.00
4/20/2017 4/22/2017 8:00 AM 3 0.31 0.0 0.00
5/23/2017 5/29/2017 8:00 AM 7 0.00 M M
5/30/2017 6/19/2017 8:00 AM 21 0.28 0.0 0.00
6/20/2017 7/17/2017 8:00 AM 28 0.00 M M
7/18/2017 7/31/2017 8:00 AM 14 0.00 M M
8/1/2017 8/05/2017 8:00 AM 5 T M M
8/6/2017 8/14/2017 8:00 AM 9 0.00 M M
8/15/2017 8/16/2017 8:00 AM 2 0.00 M M
8/17/2017 8/21/2017 8:00 AM 5 0.00 M M
8/22/2017 8/29/2017 8:00 AM 8 0.00 M M
8/30/2017 9/02/2017 8:00 AM 4 0.00 M M Extended record high heat temperatures in triple digits in the Sierra Nevada foothills
9/3/2017 10/25/2017 8:00 AM 53 0.86 0.0 0.00



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