Station Overview Station Location
Station Number CA-MN-5 Latitude 37.5569
Station Name Mammoth Lakes 16.3 ESE Longitude -118.705381
County Mono Elevation (ft) 7068



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 19 0.52 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 19 0.90 0.68 2 0.68 2 0.00 0 0 2 0 8.0 2 2
Dec 19 1.41 2.45 7 2.45 7 0.00 0 0 7 0 21.1 7 7
Jan 20 1.78 0.54 2 0.54 2 0.00 0 0 2 0 5.0 1 2
Feb 20 1.93 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 20 1.56 1.23 4 1.23 4 0.00 0 0 4 0 9.0 3 3
April 20 0.40 1.92 5 1.92 5 0.00 0 0 5 0 4.0 4 4
May 20 0.55 0.02 1 0.02 1 0.00 0 0 1 0 0.2 1 1
June 20 0.37 0.33 2 0.33 2 0.00 0 0 2 0 0.0 0 0
July 20 0.37 0.03 1 0.03 1 0.00 0 0 1 0 0.0 0 0
Aug 20 0.28 0.41 3 0.41 3 0.00 0 0 3 0 0.0 0 0
Sept 20 0.41 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 10.48" 7.61" 27 days 7.61" 27 0.00" 0 days 0 27 days 0 days 47.3" 18 days 19 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
10/1/2019
10/2/2019
10/3/2019
10/4/2019
10/5/2019
10/6/2019
10/7/2019
10/8/2019
10/9/2019
10/10/2019
10/11/2019
10/12/2019
10/13/2019
10/14/2019
10/15/2019
10/16/2019
10/17/2019
10/18/2019
10/19/2019
10/20/2019
10/21/2019
10/22/2019
10/23/2019
10/24/2019
10/25/2019
10/26/2019
10/27/2019
10/28/2019
10/29/2019
10/30/2019
10/31/2019
11/1/2019
11/2/2019
11/3/2019
11/4/2019
11/5/2019
11/6/2019
11/7/2019
11/8/2019
11/9/2019
11/10/2019
11/11/2019
11/12/2019
11/13/2019
11/14/2019
11/15/2019
11/16/2019
11/17/2019
11/18/2019
11/19/2019
11/20/2019
11/21/2019 0.18
11/22/2019
11/23/2019
11/24/2019
11/25/2019
11/26/2019
11/27/2019 0.50
11/28/2019
11/29/2019
11/30/2019
12/1/2019 0.20
12/2/2019 0.65
12/3/2019
12/4/2019
12/5/2019 0.25
12/6/2019
12/7/2019
12/8/2019 0.60
12/9/2019
12/10/2019
12/11/2019
12/12/2019
12/13/2019
12/14/2019
12/15/2019
12/16/2019
12/17/2019
12/18/2019
12/19/2019
12/20/2019
12/21/2019
12/22/2019
12/23/2019 0.30
12/24/2019 0.10
12/25/2019
12/26/2019 0.35
12/27/2019
12/28/2019
12/29/2019
12/30/2019
12/31/2019
Day of YearDaily PrcpMultiday Prcp
1/1/2020
1/2/2020
1/3/2020
1/4/2020
1/5/2020
1/6/2020
1/7/2020
1/8/2020
1/9/2020
1/10/2020
1/11/2020
1/12/2020
1/13/2020
1/14/2020
1/15/2020
1/16/2020
1/17/2020 0.50
1/18/2020
1/19/2020
1/20/2020
1/21/2020
1/22/2020
1/23/2020
1/24/2020
1/25/2020
1/26/2020
1/27/2020 0.04
1/28/2020
1/29/2020
1/30/2020
1/31/2020
2/1/2020
2/2/2020
2/3/2020
2/4/2020
2/5/2020
2/6/2020
2/7/2020
2/8/2020
2/9/2020
2/10/2020
2/11/2020
2/12/2020
2/13/2020
2/14/2020
2/15/2020
2/16/2020
2/17/2020
2/18/2020
2/19/2020
2/20/2020
2/21/2020
2/22/2020
2/23/2020
2/24/2020
2/25/2020
2/26/2020
2/27/2020
2/28/2020
2/29/2020
3/1/2020
3/2/2020
3/3/2020
3/4/2020
3/5/2020
3/6/2020
3/7/2020
3/8/2020
3/9/2020
3/10/2020
3/11/2020 0.12
3/12/2020
3/13/2020
3/14/2020
3/15/2020
3/16/2020
3/17/2020 1.00
3/18/2020
3/19/2020
3/20/2020
3/21/2020
3/22/2020
3/23/2020 0.06
3/24/2020
3/25/2020
3/26/2020
3/27/2020 0.05
3/28/2020
3/29/2020
3/30/2020
3/31/2020
Day of YearDaily PrcpMultiday Prcp
4/1/2020
4/2/2020
4/3/2020
4/4/2020
4/5/2020
4/6/2020 1.00
4/7/2020 0.18
4/8/2020 0.04
4/9/2020 0.20
4/10/2020
4/11/2020
4/12/2020
4/13/2020
4/14/2020
4/15/2020
4/16/2020
4/17/2020
4/18/2020 0.50
4/19/2020
4/20/2020
4/21/2020
4/22/2020
4/23/2020
4/24/2020
4/25/2020
4/26/2020
4/27/2020
4/28/2020
4/29/2020
4/30/2020
5/1/2020
5/2/2020
5/3/2020
5/4/2020
5/5/2020
5/6/2020
5/7/2020
5/8/2020
5/9/2020
5/10/2020
5/11/2020
5/12/2020
5/13/2020
5/14/2020
5/15/2020
5/16/2020
5/17/2020
5/18/2020
5/19/2020 0.02
5/20/2020
5/21/2020
5/22/2020
5/23/2020
5/24/2020
5/25/2020
5/26/2020
5/27/2020
5/28/2020
5/29/2020
5/30/2020
5/31/2020
6/1/2020
6/2/2020
6/3/2020
6/4/2020
6/5/2020
6/6/2020 0.03
6/7/2020
6/8/2020
6/9/2020
6/10/2020
6/11/2020
6/12/2020
6/13/2020
6/14/2020
6/15/2020
6/16/2020
6/17/2020
6/18/2020
6/19/2020
6/20/2020
6/21/2020
6/22/2020
6/23/2020
6/24/2020
6/25/2020
6/26/2020 0.30
6/27/2020
6/28/2020
6/29/2020
6/30/2020
Day of YearDaily PrcpMultiday Prcp
7/1/2020
7/2/2020
7/3/2020
7/4/2020
7/5/2020
7/6/2020
7/7/2020
7/8/2020
7/9/2020
7/10/2020
7/11/2020
7/12/2020
7/13/2020
7/14/2020
7/15/2020
7/16/2020
7/17/2020
7/18/2020
7/19/2020
7/20/2020
7/21/2020
7/22/2020 0.03
7/23/2020
7/24/2020
7/25/2020
7/26/2020
7/27/2020
7/28/2020
7/29/2020
7/30/2020
7/31/2020
8/1/2020
8/2/2020
8/3/2020
8/4/2020
8/5/2020
8/6/2020
8/7/2020
8/8/2020
8/9/2020
8/10/2020
8/11/2020
8/12/2020 0.01
8/13/2020
8/14/2020
8/15/2020
8/16/2020
8/17/2020 0.36
8/18/2020
8/19/2020 0.04
8/20/2020
8/21/2020
8/22/2020
8/23/2020
8/24/2020
8/25/2020
8/26/2020
8/27/2020
8/28/2020
8/29/2020
8/30/2020
8/31/2020
9/1/2020
9/2/2020
9/3/2020
9/4/2020
9/5/2020
9/6/2020
9/7/2020
9/8/2020
9/9/2020
9/10/2020
9/11/2020
9/12/2020
9/13/2020
9/14/2020
9/15/2020
9/16/2020
9/17/2020
9/18/2020
9/19/2020
9/20/2020
9/21/2020
9/22/2020
9/23/2020
9/24/2020
9/25/2020
9/26/2020
9/27/2020
9/28/2020
9/29/2020
9/30/2020



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
11/21/2019 7:00 AM 0.18 2.0 0.18 2.0 0.18 First measurable snow of WY 2020
11/27/2019 7:00 AM 0.50 6.0 0.50 6.0 0.50 {EDIT: Observer reported 5.00 for new precip. This is high compared to QPE data and surrounding reports and it appears snow depth was entered by mistake. Changed precip report of 5.00 to NA until observer can be contacted to verify. Submission Time Before EDIT: 11/27/2019 9:32 AM CoCoSTAFF DNT}
12/1/2019 7:00 AM 0.20 2.0 0.20 8.0 0.70 Air 28F Dewpoint 26F, RH 98%
12/2/2019 7:00 AM 0.65 1.6 0.65 9.0 1.50
12/5/2019 7:00 AM 0.25 1.0 0.25 8.0 1.60
12/8/2019 7:00 AM 0.60 7.5 0.60 14.0 2.10
12/23/2019 7:00 AM 0.30 3.0 0.30 6.0 1.20
12/24/2019 7:00 AM 0.10 1.0 0.10 8.0 1.40 24 hrs of light snowfall. Dense fog this morning. Rain Crust at 10-12 cm down from surface difficult to penetrate to get full core.
12/26/2019 7:00 AM 0.35 5.0 0.35 11.0 1.75
1/17/2020 7:00 AM 0.50 5.0 0.50 7.5 1.00
1/27/2020 7:00 AM 0.04 M M 3.0 1.10
3/11/2020 7:00 AM 0.12 M M M M
3/17/2020 7:00 AM 1.00 7.5 1.00 7.5 1.00 Snow fell from 3PM to 11PM [edit: observer reported new snow depth in precip field. Set to NA by CoCoStaff NN]
3/23/2020 7:00 AM 0.06 0.5 0.06 4.0 1.10 Rime crust
3/27/2020 7:00 AM 0.05 1.0 0.05 3.5 0.65
4/6/2020 7:00 AM 1.00 1.0 0.13 1.0 0.13
4/7/2020 7:00 AM 0.18 1.0 0.10 1.0 0.10 Snowfall from Apr 6 melted during the day.
4/8/2020 7:00 AM 0.04 0.5 0.04 0.5 0.04
4/9/2020 7:00 AM 0.20 1.5 0.20 1.5 0.20
4/18/2020 7:00 AM 0.50 0.0 0.00 0.0 0.00 Steady rain from 4:40 to 11PM. Calm winds
5/19/2020 7:00 AM 0.02 0.2 0.02 0.2 0.02
6/6/2020 7:00 AM 0.03 M M M M Evening thunderstorms on June 5 2020
6/26/2020 7:00 AM 0.30 M M M M Thunderstorm in the afternoon. Intense rainfall for 1 hr
7/22/2020 7:00 AM 0.03 M M M M
8/12/2020 7:00 AM 0.01 M M M M Rain occurred during thunderstorm
8/17/2020 7:00 AM 0.36 M M M M
8/19/2020 7:00 AM 0.04 M M M M Light rain during afternoon thunderstorm



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