Station Overview Station Location
Station Number AZ-PM-231 Latitude 32.489208
Station Name Catalina 2.5 ESE Longitude -110.884141
County Pima Elevation (ft) 3348



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 17 1.17 0.03 31 0.03 31 0.00 0 0 1 1 0.0 0 0
Nov 17 0.83 0.00 30 0.00 30 0.00 0 0 0 0 0.0 0 0
Dec 17 1.29 0.27 31 0.27 31 0.00 0 0 3 0 0.0 0 0
Jan 18 1.29 1.28 31 1.28 31 0.00 0 0 3 1 0.0 0 0
Feb 18 1.18 2.62 28 2.62 28 0.00 0 0 6 0 0.0 0 0
March 18 1.14 0.11 31 0.11 31 0.00 0 0 3 1 0.0 0 0
April 18 0.40 0.00 30 0.00 30 0.00 0 0 0 0 0.0 0 0
May 18 0.25 0.07 31 0.07 31 0.00 0 0 1 0 0.0 0 0
June 18 0.30 0.82 30 0.82 30 0.00 0 0 2 1 0.0 0 0
July 18 2.10 3.71 31 3.71 31 0.00 0 0 13 5 0.0 0 0
Aug 18 2.92 2.20 31 2.20 31 0.00 0 0 10 4 0.0 0 0
Sept 18 1.40 1.77 30 1.77 30 0.00 0 0 4 1 0.0 0 0
Water Year Totals: 14.27" 12.88" 365 days 12.88" 365 0.00" 0 days 0 46 days 14 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
10/1/2017 0.00
10/2/2017 0.00
10/3/2017 0.00
10/4/2017 0.00
10/5/2017 0.00
10/6/2017 0.00
10/7/2017 0.00
10/8/2017 0.00
10/9/2017 0.00
10/10/2017 0.00
10/11/2017 0.00
10/12/2017 0.00
10/13/2017 0.00
10/14/2017 0.00
10/15/2017 0.00
10/16/2017 0.00
10/17/2017 0.00
10/18/2017 0.00
10/19/2017 0.00
10/20/2017 T
10/21/2017 0.00
10/22/2017 0.00
10/23/2017 0.00
10/24/2017 0.00
10/25/2017 0.00
10/26/2017 0.00
10/27/2017 0.00
10/28/2017 0.00
10/29/2017 0.00
10/30/2017 0.00
10/31/2017 0.03
11/1/2017 0.00
11/2/2017 0.00
11/3/2017 0.00
11/4/2017 0.00
11/5/2017 0.00
11/6/2017 0.00
11/7/2017 0.00
11/8/2017 0.00
11/9/2017 0.00
11/10/2017 0.00
11/11/2017 0.00
11/12/2017 0.00
11/13/2017 0.00
11/14/2017 0.00
11/15/2017 0.00
11/16/2017 0.00
11/17/2017 0.00
11/18/2017 0.00
11/19/2017 0.00
11/20/2017 0.00
11/21/2017 0.00
11/22/2017 0.00
11/23/2017 0.00
11/24/2017 0.00
11/25/2017 0.00
11/26/2017 0.00
11/27/2017 0.00
11/28/2017 0.00
11/29/2017 0.00
11/30/2017 0.00
12/1/2017 0.00
12/2/2017 0.00
12/3/2017 0.00
12/4/2017 0.00
12/5/2017 0.00
12/6/2017 0.01
12/7/2017 0.00
12/8/2017 0.00
12/9/2017 0.00
12/10/2017 0.00
12/11/2017 0.00
12/12/2017 0.00
12/13/2017 0.00
12/14/2017 0.00
12/15/2017 0.00
12/16/2017 0.00
12/17/2017 0.08
12/18/2017 0.18
12/19/2017 0.00
12/20/2017 0.00
12/21/2017 0.00
12/22/2017 0.00
12/23/2017 0.00
12/24/2017 0.00
12/25/2017 0.00
12/26/2017 0.00
12/27/2017 0.00
12/28/2017 0.00
12/29/2017 0.00
12/30/2017 0.00
12/31/2017 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2018 0.00
1/2/2018 0.00
1/3/2018 0.00
1/4/2018 0.00
1/5/2018 T
1/6/2018 0.00
1/7/2018 0.00
1/8/2018 0.00
1/9/2018 0.00
1/10/2018 0.78
1/11/2018 0.28
1/12/2018 0.00
1/13/2018 0.00
1/14/2018 0.00
1/15/2018 0.00
1/16/2018 0.00
1/17/2018 0.00
1/18/2018 0.00
1/19/2018 0.00
1/20/2018 0.00
1/21/2018 0.22
1/22/2018 0.00
1/23/2018 0.00
1/24/2018 0.00
1/25/2018 0.00
1/26/2018 0.00
1/27/2018 0.00
1/28/2018 0.00
1/29/2018 0.00
1/30/2018 0.00
1/31/2018 0.00
2/1/2018 0.00
2/2/2018 0.00
2/3/2018 0.00
2/4/2018 0.00
2/5/2018 0.00
2/6/2018 0.00
2/7/2018 0.00
2/8/2018 0.00
2/9/2018 0.00
2/10/2018 0.00
2/11/2018 0.00
2/12/2018 0.00
2/13/2018 0.00
2/14/2018 0.00
2/15/2018 1.21
2/16/2018 0.82
2/17/2018 0.16
2/18/2018 0.00
2/19/2018 0.02
2/20/2018 0.11
2/21/2018 0.00
2/22/2018 0.00
2/23/2018 0.00
2/24/2018 0.00
2/25/2018 0.00
2/26/2018 0.00
2/27/2018 0.00
2/28/2018 0.30
3/1/2018 0.06
3/2/2018 0.00
3/3/2018 0.00
3/4/2018 0.00
3/5/2018 0.00
3/6/2018 0.00
3/7/2018 0.00
3/8/2018 0.00
3/9/2018 0.00
3/10/2018 0.00
3/11/2018 0.02
3/12/2018 0.00
3/13/2018 0.00
3/14/2018 0.00
3/15/2018 0.00
3/16/2018 0.00
3/17/2018 0.00
3/18/2018 0.00
3/19/2018 0.03
3/20/2018 0.00
3/21/2018 0.00
3/22/2018 0.00
3/23/2018 0.00
3/24/2018 0.00
3/25/2018 0.00
3/26/2018 0.00
3/27/2018 T
3/28/2018 0.00
3/29/2018 0.00
3/30/2018 0.00
3/31/2018 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2018 0.00
4/2/2018 0.00
4/3/2018 0.00
4/4/2018 0.00
4/5/2018 0.00
4/6/2018 0.00
4/7/2018 0.00
4/8/2018 0.00
4/9/2018 0.00
4/10/2018 0.00
4/11/2018 0.00
4/12/2018 0.00
4/13/2018 0.00
4/14/2018 0.00
4/15/2018 0.00
4/16/2018 0.00
4/17/2018 0.00
4/18/2018 0.00
4/19/2018 0.00
4/20/2018 0.00
4/21/2018 0.00
4/22/2018 0.00
4/23/2018 0.00
4/24/2018 0.00
4/25/2018 0.00
4/26/2018 0.00
4/27/2018 0.00
4/28/2018 0.00
4/29/2018 0.00
4/30/2018 0.00
5/1/2018 0.00
5/2/2018 0.07
5/3/2018 0.00
5/4/2018 0.00
5/5/2018 0.00
5/6/2018 0.00
5/7/2018 0.00
5/8/2018 0.00
5/9/2018 0.00
5/10/2018 0.00
5/11/2018 0.00
5/12/2018 0.00
5/13/2018 0.00
5/14/2018 0.00
5/15/2018 0.00
5/16/2018 0.00
5/17/2018 0.00
5/18/2018 0.00
5/19/2018 0.00
5/20/2018 0.00
5/21/2018 0.00
5/22/2018 0.00
5/23/2018 0.00
5/24/2018 0.00
5/25/2018 0.00
5/26/2018 0.00
5/27/2018 0.00
5/28/2018 0.00
5/29/2018 0.00
5/30/2018 0.00
5/31/2018 0.00
6/1/2018 0.00
6/2/2018 0.00
6/3/2018 0.00
6/4/2018 0.00
6/5/2018 0.00
6/6/2018 0.00
6/7/2018 0.00
6/8/2018 0.00
6/9/2018 0.00
6/10/2018 0.00
6/11/2018 0.00
6/12/2018 0.00
6/13/2018 0.00
6/14/2018 0.00
6/15/2018 T
6/16/2018 0.61
6/17/2018 0.21
6/18/2018 0.00
6/19/2018 0.00
6/20/2018 0.00
6/21/2018 0.00
6/22/2018 0.00
6/23/2018 0.00
6/24/2018 0.00
6/25/2018 0.00
6/26/2018 0.00
6/27/2018 0.00
6/28/2018 0.00
6/29/2018 0.00
6/30/2018 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.00
7/2/2018 0.00
7/3/2018 0.00
7/4/2018 0.00
7/5/2018 0.00
7/6/2018 T
7/7/2018 0.00
7/8/2018 T
7/9/2018 0.22
7/10/2018 0.04
7/11/2018 0.08
7/12/2018 0.42
7/13/2018 0.00
7/14/2018 T
7/15/2018 0.67
7/16/2018 0.06
7/17/2018 0.37
7/18/2018 0.00
7/19/2018 T
7/20/2018 T
7/21/2018 0.58
7/22/2018 0.00
7/23/2018 0.00
7/24/2018 0.05
7/25/2018 0.00
7/26/2018 0.00
7/27/2018 0.00
7/28/2018 0.87
7/29/2018 0.14
7/30/2018 0.12
7/31/2018 0.09
8/1/2018 0.00
8/2/2018 0.03
8/3/2018 T
8/4/2018 0.00
8/5/2018 0.00
8/6/2018 0.00
8/7/2018 0.03
8/8/2018 0.08
8/9/2018 0.00
8/10/2018 0.32
8/11/2018 0.93
8/12/2018 0.13
8/13/2018 0.23
8/14/2018 0.00
8/15/2018 0.00
8/16/2018 0.03
8/17/2018 0.00
8/18/2018 0.00
8/19/2018 T
8/20/2018 0.00
8/21/2018 0.00
8/22/2018 0.00
8/23/2018 0.09
8/24/2018 0.00
8/25/2018 0.33
8/26/2018 T
8/27/2018 T
8/28/2018 0.00
8/29/2018 0.00
8/30/2018 0.00
8/31/2018 0.00
9/1/2018 0.00
9/2/2018 0.06
9/3/2018 0.11
9/4/2018 0.00
9/5/2018 T
9/6/2018 0.00
9/7/2018 0.00
9/8/2018 0.00
9/9/2018 0.00
9/10/2018 0.00
9/11/2018 0.00
9/12/2018 0.00
9/13/2018 0.00
9/14/2018 0.00
9/15/2018 0.00
9/16/2018 0.00
9/17/2018 0.17
9/18/2018 0.00
9/19/2018 0.00
9/20/2018 1.43
9/21/2018 0.00
9/22/2018 0.00
9/23/2018 0.00
9/24/2018 0.00
9/25/2018 0.00
9/26/2018 0.00
9/27/2018 0.00
9/28/2018 0.00
9/29/2018 0.00
9/30/2018 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 7:00 AM 0.00 0.0 M M M
10/2/2017 7:00 AM 0.00 0.0 M M M
10/3/2017 7:00 AM 0.00 0.0 M M M
10/4/2017 7:00 AM 0.00 0.0 M M M
10/5/2017 7:00 AM 0.00 0.0 M M M
10/6/2017 7:00 AM 0.00 0.0 M M M
10/7/2017 7:00 AM 0.00 0.0 M M M
10/8/2017 7:00 AM 0.00 0.0 M M M
10/9/2017 7:00 AM 0.00 0.0 M M M
10/10/2017 7:00 AM 0.00 0.0 M M M
10/11/2017 7:00 AM 0.00 0.0 M M M
10/12/2017 7:00 AM 0.00 0.0 M M M
10/13/2017 7:00 AM 0.00 0.0 M M M
10/14/2017 7:00 AM 0.00 0.0 M M M
10/15/2017 7:00 AM 0.00 0.0 M M M
10/16/2017 7:00 AM 0.00 0.0 M M M
10/17/2017 7:00 AM 0.00 0.0 M M M
10/18/2017 7:00 AM 0.00 0.0 M M M
10/19/2017 7:00 AM 0.00 0.0 M M M
10/20/2017 7:00 AM T M M M M A few sparse drops from high-based, small Cbs between 12:30 and 1 PM.
10/21/2017 7:00 AM 0.00 0.0 M M M
10/22/2017 7:00 AM 0.00 0.0 M M M
10/23/2017 7:00 AM 0.00 0.0 M M M
10/24/2017 7:00 AM 0.00 0.0 M M M
10/25/2017 7:00 AM 0.00 0.0 M M M
10/26/2017 7:00 AM 0.00 0.0 M M M
10/27/2017 7:00 AM 0.00 0.0 M M M
10/28/2017 7:00 AM 0.00 0.0 M M M
10/29/2017 7:00 AM 0.00 0.0 M M M
10/30/2017 7:00 AM 0.00 0.0 M M M
10/31/2017 7:00 AM 0.03 M M M M 0.02 in NWS 8-inch gauge. Evening band of high-based TSTMS passed over.
11/1/2017 7:00 AM 0.00 0.0 M M M
11/2/2017 7:00 AM 0.00 0.0 M M M
11/3/2017 7:00 AM 0.00 0.0 M M M
11/4/2017 7:00 AM 0.00 0.0 M M M
11/5/2017 7:00 AM 0.00 0.0 M M M
11/6/2017 7:00 AM 0.00 0.0 M M M
11/7/2017 7:00 AM 0.00 0.0 M M M
11/8/2017 7:00 AM 0.00 0.0 M M M
11/9/2017 7:00 AM 0.00 0.0 M M M
11/10/2017 7:00 AM 0.00 0.0 M M M
11/11/2017 7:00 AM 0.00 0.0 M M M
11/12/2017 7:00 AM 0.00 0.0 M M M
11/13/2017 7:00 AM 0.00 0.0 M M M
11/14/2017 7:00 AM 0.00 0.0 M M M
11/15/2017 7:00 AM 0.00 0.0 M M M
11/16/2017 7:00 AM 0.00 0.0 M M M
11/17/2017 7:00 AM 0.00 0.0 M M M
11/18/2017 7:00 AM 0.00 0.0 M M M
11/19/2017 7:00 AM 0.00 0.0 M M M
11/20/2017 7:00 AM 0.00 0.0 M M M
11/21/2017 7:00 AM 0.00 0.0 M M M
11/22/2017 7:00 AM 0.00 0.0 M M M
11/23/2017 7:00 AM 0.00 0.0 M M M
11/24/2017 7:00 AM 0.00 0.0 M M M
11/25/2017 7:00 AM 0.00 0.0 M M M
11/26/2017 7:00 AM 0.00 0.0 M M M
11/27/2017 7:00 AM 0.00 0.0 M M M
11/28/2017 7:00 AM 0.00 0.0 M M M
11/29/2017 7:00 AM 0.00 0.0 M M M
11/30/2017 7:00 AM 0.00 0.0 M M M
12/1/2017 7:00 AM 0.00 0.0 M M M
12/2/2017 7:00 AM 0.00 0.0 M M M
12/3/2017 7:00 AM 0.00 0.0 M M M
12/4/2017 7:00 AM 0.00 0.0 M M M
12/5/2017 7:00 AM 0.00 0.0 M M M
12/6/2017 7:00 AM 0.01 M M M M Fell after 2 AM. 0.01 in NWS and indicated by Davis TB.
12/7/2017 7:00 AM 0.00 0.0 M M M
12/8/2017 7:00 AM 0.00 0.0 M M M
12/9/2017 7:00 AM 0.00 0.0 M M M
12/10/2017 7:00 AM 0.00 0.0 M M M
12/11/2017 7:00 AM 0.00 0.0 M M M
12/12/2017 7:00 AM 0.00 0.0 M M M
12/13/2017 7:00 AM 0.00 0.0 M M M
12/14/2017 7:00 AM 0.00 0.0 M M M
12/15/2017 7:00 AM 0.00 0.0 M M M
12/16/2017 7:00 AM 0.00 0.0 M M M
12/17/2017 7:00 AM 0.08 M M M M
12/18/2017 7:00 AM 0.18 M M M M Original amount from NWS gauge, later check showed 0.26 total for two days in CoCo gauge, meaning 0.18 fell the second day.
12/19/2017 7:00 AM 0.00 0.0 M M M
12/20/2017 7:00 AM 0.00 0.0 M M M
12/21/2017 7:00 AM 0.00 0.0 M M M
12/22/2017 7:00 AM 0.00 0.0 M M M
12/23/2017 7:00 AM 0.00 0.0 M M M
12/24/2017 7:00 AM 0.00 0.0 M M M
12/25/2017 7:00 AM 0.00 0.0 M M M
12/26/2017 7:00 AM 0.00 0.0 M M M
12/27/2017 7:00 AM 0.00 0.0 M M M
12/28/2017 7:00 AM 0.00 0.0 M M M
12/29/2017 7:00 AM 0.00 0.0 M M M
12/30/2017 7:00 AM 0.00 0.0 M M M
12/31/2017 7:00 AM 0.00 0.0 M M M
1/1/2018 7:00 AM 0.00 0.0 M M M
1/2/2018 7:00 AM 0.00 0.0 M M M
1/3/2018 7:00 AM 0.00 0.0 M M M
1/4/2018 7:00 AM 0.00 0.0 M M M
1/5/2018 7:00 AM T M M M M Isolated drops fell from an As/Ac layer between 0830 and 0930 AST.
1/6/2018 7:00 AM 0.00 0.0 M M M
1/7/2018 7:00 AM 0.00 0.0 M M M
1/8/2018 7:00 AM 0.00 0.0 M M M
1/9/2018 7:00 AM 0.00 0.0 M M M
1/10/2018 7:00 AM 0.78 M M M M Measurable rain fell after midnight. Oddly, 0.78 in CoCo gauge, 0.81 in NWS (very unusual for CoCo to record less than the NWS gauge). style gauge, 1.03 indicated by Davis tipping bucket, likely had electrical glitch as has happened before raising the total.
1/11/2018 7:00 AM 0.28 M M M M Rain ended before noon. 0.29 inches in NWS-style gauge. 0.21 inches indicated by Davis TB. No wind with rain to speak of. Not sure why CoCo amounts are running slightly less than the NWS gauge, a reversal of a long time trend.
1/12/2018 7:00 AM 0.00 0.0 M M M
1/13/2018 7:00 AM 0.00 0.0 M M M
1/14/2018 7:00 AM 0.00 0.0 M M M
1/15/2018 7:00 AM 0.00 0.0 M M M
1/16/2018 7:00 AM 0.00 0.0 M M M
1/17/2018 7:00 AM 0.00 0.0 M M M
1/18/2018 7:00 AM 0.00 0.0 M M M
1/19/2018 7:00 AM 0.00 0.0 M M M
1/20/2018 7:00 AM 0.00 0.0 M M M
1/21/2018 7:00 AM 0.22 M M M M Rain fell in the afternoon for about 2 h. 0.20 in NWS gauge, Davis malfunctioning, 0.32 inches,, most of which in an instantaneous spike.
1/22/2018 7:00 AM 0.00 0.0 M M M
1/23/2018 7:00 AM 0.00 0.0 M M M
1/24/2018 7:00 AM 0.00 0.0 M M M
1/25/2018 7:00 AM 0.00 0.0 M M M
1/26/2018 7:00 AM 0.00 0.0 M M M
1/27/2018 7:00 AM 0.00 0.0 M M M
1/28/2018 7:00 AM 0.00 0.0 M M M
1/29/2018 7:00 AM 0.00 0.0 M M M
1/30/2018 7:00 AM 0.00 0.0 M M M
1/31/2018 7:00 AM 0.00 0.0 M M M
2/1/2018 7:00 AM 0.00 0.0 M M M
2/2/2018 7:00 AM 0.00 0.0 M M M
2/3/2018 7:00 AM 0.00 0.0 M M M
2/4/2018 7:00 AM 0.00 0.0 M M M
2/5/2018 7:00 AM 0.00 0.0 M M M
2/6/2018 7:00 AM 0.00 0.0 M M M
2/7/2018 7:00 AM 0.00 0.0 M M M
2/8/2018 7:00 AM 0.00 0.0 M M M
2/9/2018 7:00 AM 0.00 0.0 M M M
2/10/2018 7:00 AM 0.00 0.0 M M M
2/11/2018 7:00 AM 0.00 0.0 M M M
2/12/2018 7:00 AM 0.00 0.0 M M M
2/13/2018 7:00 AM 0.00 0.0 M M M
2/14/2018 7:00 AM 0.00 0.0 M M M
2/15/2018 7:00 AM 1.21 M M M M One of the most constant rains that we have experienced over more than 15 h, beginning at 2:30 PM yesterday. 1.02 inches indicated by Davis TB. NWS compromised by rain left in it. Read 1.62 inches, prior reading was 0.49 inches weeks ago. Suspect true value is 1.62-0.45 "or so", evap pretty small when funnel is on these gauges.
2/16/2018 7:00 AM 0.82 M M M M R-- or L- whole day until past midnight when 0.04 inches was logged by Davis TB. Amount entered is from CoCo gauge as usual, 0.81 inches in NWS gauge, but only about 0.62 inches indicated by Davis TB. Davis record also had a spurious spike.
2/17/2018 7:00 AM 0.16 M M M M Drizzle after ob time, 0.01 inches, followed by R- in afternoon. NWS gauge, 0.15 inches, Davis TB 0.12 inches.
2/18/2018 7:00 AM 0.00 0.0 M M M
2/19/2018 7:00 AM 0.02 M M M M Fell during late afternoon brief RW-. 0.02 in NWS gauge, 0.01 indicated by Davis TB.
2/20/2018 7:00 AM 0.11 M M M M Fell overnight. 0.11 in NWS 8-inch gauge, 0.10 inches indicated by Davis TB.
2/21/2018 7:00 AM 0.00 0.0 M M M
2/22/2018 7:00 AM 0.00 0.0 M M M
2/23/2018 7:00 AM 0.00 0.0 M M M
2/24/2018 7:00 AM 0.00 0.0 M M M
2/25/2018 7:00 AM 0.00 0.0 M M M
2/26/2018 7:00 AM 0.00 0.0 M M M
2/27/2018 7:00 AM 0.00 0.0 M M M
2/28/2018 7:00 AM 0.30 M M M M Fell after midnight. Graupel at ob time. 0.30 in CoCo gauge, 027 inches in NWS 8-inch gauge, only 0.21 indicated by Davis TB.
3/1/2018 7:00 AM 0.06 M M M M 0.06 in CoCo gauge, 0.05 inches in NWS-style gauge, 0.04 inches indicated by Davis TB. Fell partly as graupel in the morning soon after ob time.
3/2/2018 7:00 AM 0.00 0.0 M M M
3/3/2018 7:00 AM 0.00 0.0 M M M
3/4/2018 7:00 AM 0.00 0.0 M M M
3/5/2018 7:00 AM 0.00 0.0 M M M
3/6/2018 7:00 AM 0.00 0.0 M M M
3/7/2018 7:00 AM 0.00 0.0 M M M
3/8/2018 7:00 AM 0.00 0.0 M M M
3/9/2018 7:00 AM 0.00 0.0 M M M
3/10/2018 7:00 AM 0.00 0.0 M M M
3/11/2018 7:00 AM 0.02 M M M M Fell just before ob time. 0.02 inches in both CoCo and NWS gauges. 0.01 inches indicated by Davis TB. Fell, at least for a time, as true drizzle, a pretty unusual event here in AZ.
3/12/2018 7:00 AM 0.00 0.0 M M M
3/13/2018 7:00 AM 0.00 0.0 M M M
3/14/2018 7:00 AM 0.00 0.0 M M M
3/15/2018 7:00 AM 0.00 0.0 M M M
3/16/2018 7:00 AM 0.00 0.0 M M M Close to having a spkl. In an observation extrema, I was outside in cold wind, brutal 64°temperature for over TEN minutes, as heaviest cloud line passed over looking for a single drop to fall out. None fell. It was pretty heartbreaking. So, no trace report today.
3/17/2018 7:00 AM 0.00 0.0 M M M
3/18/2018 7:00 AM 0.00 0.0 M M M
3/19/2018 7:00 AM 0.03 M M M M Fell around 10 AM via Davis TB. 0.03 inches in CoCo gauge, 0.02 inches in NWS and indicated by Davis TB. Second Davis TB tip likely due to wind, with some water still in the little bucket since it happened long after the rain quit.
3/20/2018 7:00 AM 0.00 0.0 M M M
3/21/2018 7:00 AM 0.00 0.0 M M M
3/22/2018 7:00 AM 0.00 0.0 M M M
3/23/2018 7:00 AM 0.00 0.0 M M M
3/24/2018 7:00 AM 0.00 0.0 M M M
3/25/2018 7:00 AM 0.00 0.0 M M M
3/26/2018 7:00 AM 0.00 0.0 M M M
3/27/2018 7:00 AM T M M M M Fell overnight, proof in drop splash images on dusty car parked outside so trace occurrence not missed!
3/28/2018 7:00 AM 0.00 0.0 M M M
3/29/2018 7:00 AM 0.00 0.0 M M M
3/30/2018 7:00 AM 0.00 0.0 M M M
3/31/2018 7:00 AM 0.00 0.0 M M M
4/1/2018 7:00 AM 0.00 0.0 M M M
4/2/2018 7:00 AM 0.00 0.0 M M M
4/3/2018 7:00 AM 0.00 0.0 M M M
4/4/2018 7:00 AM 0.00 0.0 M M M
4/5/2018 7:00 AM 0.00 0.0 M M M
4/6/2018 7:00 AM 0.00 0.0 M M M
4/7/2018 7:00 AM 0.00 0.0 M M M
4/8/2018 7:00 AM 0.00 0.0 M M M
4/9/2018 7:00 AM 0.00 0.0 M M M
4/10/2018 7:00 AM 0.00 0.0 M M M
4/11/2018 7:00 AM 0.00 0.0 M M M
4/12/2018 7:00 AM 0.00 0.0 M M M
4/13/2018 7:00 AM 0.00 0.0 M M M
4/14/2018 7:00 AM 0.00 0.0 M M M
4/15/2018 7:00 AM 0.00 0.0 M M M
4/16/2018 7:00 AM 0.00 0.0 M M M
4/17/2018 7:00 AM 0.00 0.0 M M M
4/18/2018 7:00 AM 0.00 0.0 M M M
4/19/2018 7:00 AM 0.00 0.0 M M M
4/20/2018 7:00 AM 0.00 0.0 M M M
4/21/2018 7:00 AM 0.00 0.0 M M M
4/22/2018 7:00 AM 0.00 0.0 M M M
4/23/2018 7:00 AM 0.00 0.0 M M M
4/24/2018 7:00 AM 0.00 0.0 M M M
4/25/2018 7:00 AM 0.00 0.0 M M M
4/26/2018 7:00 AM 0.00 0.0 M M M
4/27/2018 7:00 AM 0.00 0.0 M M M
4/28/2018 7:00 AM 0.00 0.0 M M M
4/29/2018 7:00 AM 0.00 0.0 M M M
4/30/2018 7:00 AM 0.00 0.0 M M M
5/1/2018 7:00 AM 0.00 0.0 M M M
5/2/2018 7:00 AM 0.07 M M M M 0.07 in NWS and CoCo gauges, 0.04 indicated by Davis TB. Fell just before and after midnight.
5/3/2018 7:00 AM 0.00 0.0 M M M
5/4/2018 7:00 AM 0.00 0.0 M M M
5/5/2018 7:00 AM 0.00 0.0 M M M
5/6/2018 7:00 AM 0.00 0.0 M M M
5/7/2018 7:00 AM 0.00 0.0 M M M
5/8/2018 7:00 AM 0.00 0.0 M M M
5/9/2018 7:00 AM 0.00 0.0 M M M
5/10/2018 7:00 AM 0.00 0.0 M M M
5/11/2018 7:00 AM 0.00 0.0 M M M
5/12/2018 7:00 AM 0.00 0.0 M M M
5/13/2018 7:00 AM 0.00 0.0 M M M
5/14/2018 7:00 AM 0.00 0.0 M M M
5/15/2018 7:00 AM 0.00 0.0 M M M
5/16/2018 7:00 AM 0.00 0.0 M M M
5/17/2018 7:00 AM 0.00 0.0 M M M
5/18/2018 7:00 AM 0.00 0.0 M M M
5/19/2018 7:00 AM 0.00 0.0 M M M
5/20/2018 7:00 AM 0.00 0.0 M M M
5/21/2018 7:00 AM 0.00 0.0 M M M
5/22/2018 7:00 AM 0.00 0.0 M M M
5/23/2018 7:00 AM 0.00 0.0 M M M
5/24/2018 7:00 AM 0.00 0.0 M M M
5/25/2018 7:00 AM 0.00 0.0 M M M
5/26/2018 7:00 AM 0.00 0.0 M M M
5/27/2018 7:00 AM 0.00 0.0 M M M
5/28/2018 7:00 AM 0.00 0.0 M M M
5/29/2018 7:00 AM 0.00 0.0 M M M
5/30/2018 7:00 AM 0.00 0.0 M M M
5/31/2018 7:00 AM 0.00 0.0 M M M
6/1/2018 7:00 AM 0.00 0.0 M M M
6/2/2018 7:00 AM 0.00 0.0 M M M
6/3/2018 7:00 AM 0.00 0.0 M M M
6/4/2018 7:00 AM 0.00 0.0 M M M
6/5/2018 7:00 AM 0.00 0.0 M M M
6/6/2018 7:00 AM 0.00 0.0 M M M
6/7/2018 7:00 AM 0.00 0.0 M M M
6/8/2018 7:00 AM 0.00 0.0 M M M
6/9/2018 7:00 AM 0.00 0.0 M M M
6/10/2018 7:00 AM 0.00 0.0 M M M
6/11/2018 7:00 AM 0.00 0.0 M M M
6/12/2018 7:00 AM 0.00 0.0 M M M
6/13/2018 7:00 AM 0.00 0.0 M M M
6/14/2018 7:00 AM 0.00 0.0 M M M
6/15/2018 7:00 AM T M M M M Brief fall of sparse fine drops about 6 AM.
6/16/2018 7:00 AM 0.61 M M M M 0.60 in NWS 8-inch gauge. Davis TB not available, quit during night. Rain fell as sprinkles during prior day, then gradually became R-- to R- overnight into early morning. T on MTNS SE just before ob time.
6/17/2018 7:00 AM 0.21 M M M M in CoCo gauge; 0.20 in NWS gauge, 0.17 inches, Davis TB. Fell yesterday morning before 10 AM, with sparse, non-measurable RW-- afterwards.
6/18/2018 7:00 AM 0.00 0.0 M M M
6/19/2018 7:00 AM 0.00 0.0 M M M
6/20/2018 7:00 AM 0.00 0.0 M M M
6/21/2018 7:00 AM 0.00 0.0 M M M
6/22/2018 7:00 AM 0.00 0.0 M M M
6/23/2018 7:00 AM 0.00 0.0 M M M
6/24/2018 7:00 AM 0.00 0.0 M M M
6/25/2018 7:00 AM 0.00 0.0 M M M
6/26/2018 7:00 AM 0.00 0.0 M M M
6/27/2018 7:00 AM 0.00 0.0 M M M
6/28/2018 7:00 AM 0.00 0.0 M M M
6/29/2018 7:00 AM 0.00 0.0 M M M
6/30/2018 7:00 AM 0.00 0.0 M M M
7/1/2018 7:00 AM 0.00 0.0 M M M
7/2/2018 7:00 AM 0.00 0.0 M M M
7/3/2018 7:00 AM 0.00 0.0 M M M
7/4/2018 7:00 AM 0.00 0.0 M M M
7/5/2018 7:00 AM 0.00 0.0 M M M
7/6/2018 7:00 AM T M M M M Several RW--- from dissipating remains of high-based afternoon Cbs. Gusts measured to 50 mph from NE at about 4 PM. Shook house when It hit.
7/7/2018 7:00 AM 0.00 0.0 M M M
7/8/2018 7:00 AM T M M M M Few late afternoon drops from dissipated Cb complex.
7/9/2018 7:00 AM 0.22 M M M M CoCo gauge, 0.20 NWS gauge, 0.17 Davis TB. TSTM moved in about 7 PM. Peak gust est 40 kts.
7/10/2018 7:00 AM 0.04 M M M M R-- started just before dawn. 0.04 in CoCo gauge, 0.03 in NWS gauge, 0.02 indicated by Davis TB.
7/11/2018 7:00 AM 0.08 M M M M Fell as R-- on periphery of strong storms. 0.08 Coco, 0.07 NWS, 0.06 Davis TB.
7/12/2018 7:00 AM 0.42 M M M M Unusual late morning TSTM built off MTNS, RW- to RW, OCNL LTG is all. 0.42 in CoCo gauge, 0.39 in NWS 8-inch style gauge, and 0.32 indicated by Davis TB (needs work).
7/13/2018 7:00 AM 0.00 0.0 M M M
7/14/2018 7:00 AM T M M M M Afternoon SPKL about 3 PM from remains of Cb.
7/15/2018 7:00 AM 0.67 M M M M Began as TRW+ just before 4 AM AST. 0.65 in NWS gauge, 0.42 indicated by malfunctioning Davis TB.
7/16/2018 7:00 AM 0.06 M M M M Fell as continuing R- to R-- after ob time. 0.06 in Coco gauge, 0.06 in NWW-style 8-inch gauge. Davis TB did not report due to solar panel issue cause by two overcast days I think. Came back when sun came out at mid-day,
7/17/2018 7:00 AM 0.37 M M M M Late afternoon TSTM, RW. 0.37 inches in CoCo gauge, 0.33 inches in NWS 8-inch gauge, 0.30 indicated by Davis TB.
7/18/2018 7:00 AM 0.00 0.0 M M M
7/19/2018 7:00 AM T M M M M Isolated drops 3:55pm from Cu song remains.
7/20/2018 7:00 AM T M M M M Afternoon multiple sprinkles from glaciating upper portions of Cbs launched from Ms. Mt. Lemmon.
7/21/2018 7:00 AM 0.58 M M M M Came in two short violent bursts, one afternoon, 0.11 inches in about 5 min, 40 mph gusts from N, the other just after 1:45 AM. CONTUS LTG with second, SE gusts to 50 mph, rain 0.47 in second burst. 0.58 in CoCo, 0.49 in NWS gauge (wind losses, was very exposed in the 2nd storm, and 0.53 inches indicated by Davis TB.
7/22/2018 7:00 AM 0.00 0.0 M M M
7/23/2018 7:00 AM 0.00 0.0 M M M
7/24/2018 7:00 AM 0.05 M M M M Tiny TSTM almost developed overhead just after 3 AM. 0.05 Coco gauge, 0.04 inches, NWS style gauge, 0.03 indicated by Davis TB. Seems to have originated in clusters of Ac cas.
7/25/2018 7:00 AM 0.00 0.0 M M M
7/26/2018 7:00 AM 0.00 0.0 M M M
7/27/2018 7:00 AM 0.00 0.0 M M M
7/28/2018 7:00 AM 0.87 M M M M Another violent short-lived storm with FQT LTG, 2 strikes within a 200 yds or so. 0.87 in NWS gauge, 0.84 inches in CoCo gauge likely shadowed just a bit by a growing plant in the direction from which the wind came. Have moved it 2 feet to the NNE. Wind gusted to over 50 mph from N-NW during heaviest rain. Davis anemometer got wacky, isn't reliable at that time. 0.60 inches indicated by Davis TB, a very serious under catch.
7/29/2018 7:00 AM 0.14 M M M M Another day of several episodes of thunder, beginning in the late afternoon. Mesaurable rain occurred only in one, that about 8 PM. 0.14 in CoCo gauge, 0.13 inches in NWS style gauge, and O.14 also indicated by David TB. Little wind in this episode and rain rates moderate.
7/30/2018 7:00 AM 0.12 M M M M Fell as RW- at 8:30 PM. No thunder. 0.11 in NWS-8-inch gauge, 0.10 indicated by Davis TB.
7/31/2018 7:00 AM 0.09 M M M M 0.09 inches from Davis TB. NWS gauge wind impacted at 0.08 inches, have moved it slightly to have more wind reduction, Coco gauge blew over during evening storm. Very heavy rain N and just a few hundred yards east of us as cell cut loose.
8/1/2018 7:00 AM 0.00 0.0 M M M
8/2/2018 7:00 AM 0.03 M M M M Measurable part fell during the early nighttime hours with considerable "bulb" LTG almost overhead and little CG. 0.03 in both CoCo and NWS gauge. Davis was out due to a power outage.
8/3/2018 7:00 AM T M M M M A few drops fell about 2:30 PM from a Cb debris cloud drifting off Mt. Lemmon.
8/4/2018 7:00 AM 0.00 0.0 M M M
8/5/2018 7:00 AM 0.00 0.0 M M M
8/6/2018 7:00 AM 0.00 0.0 M M M
8/7/2018 7:00 AM 0.03 M M M M Fell just before midnight. 0.02 in NWS gauge, 0.01 inches indicated by Davis TB.
8/8/2018 7:00 AM 0.08 M M M M Fell between 2145 and 2200 AST in hard shower. 0.08 in NWS gauge, 0.08 indicated by Davis TB.
8/9/2018 7:00 AM 0.00 0.0 M M M I definitely believe, based on temperature and radar, that we had a trace late last night.
8/10/2018 7:00 AM 0.32 M M M M 0.01 during afternoon, rest just after midnight in TSTMS OCNL LTG. 0.32 in NWS and CoCo gauges, only 0.23 indicated by Davis TB.
8/11/2018 7:00 AM 0.93 M M M M Two major events, first TRW+ OCNL LTG W marble-sized hail. Larger dump slightly SW of here. Not much wind. 2nd roared in at 6:30 PM with gusts 40-50 mph, and FWT LTG, three strikes about on house. 0.93 inches in CoCo gauge, 0.89 inches in NWS 8-inch gauge (now subject to more wind loss since prickly-pear cactus collapsed around it, and 0.75 inches indicated by Davis TB.
8/12/2018 7:00 AM 0.13 M M M M Fell in two similar magnitude episodes, evening TSTM and 1-2 AM TSTM. Evening TSTM had an unusual amount of LTG for what seemed to be a small cell. 0.13 in CoCo gauge, 0.12 in NWS-type gauge, 0.10 indicated by Davis TB.
8/13/2018 7:00 AM 0.23 M M M M Late afternoon complex roared in from the NNE with gusts to over 50 mph (Davis measured 47 mph). 0.23 inches in CoCo gauge, 0.22 in NWS gauge, 0.18 inches indicated by Davis TB. LTG only OCNL.
8/14/2018 7:00 AM 0.00 0.0 M M M
8/15/2018 7:00 AM 0.00 0.0 M M M Likely SPKL overnight per radar
8/16/2018 7:00 AM 0.03 M M M M Some thunder after dawn to SSW, but fell as R- to R-- from stratiform appearing mid-level clouds in mid-morning to just after 12 noon. 0.02 inches in NWS gauge, 0.02 indicated by Davis TB. No wind with this event.
8/17/2018 7:00 AM 0.00 0.0 M M M
8/18/2018 7:00 AM 0.00 0.0 M M M
8/19/2018 7:00 AM T M M M M Several drops luckily noted just before noon from Cb overhang to S-SW
8/20/2018 7:00 AM 0.00 0.0 M M M
8/21/2018 7:00 AM 0.00 0.0 M M M Echoes were overhead during evening, but no drops detected.
8/22/2018 7:00 AM 0.00 0.0 M M M May have missed a sprinkle at mid-day from mid-level stratiform deck that was approaching, producing a rain haze upwind. Napped during possible drops bringing truth to "You snooze you lose" once again.
8/23/2018 7:00 AM 0.09 M M M M Went up big early, but only peripheries affected us in the afternoon. 0.09 also in NWS gauge, 0.07 indicated by Davis TB.
8/24/2018 7:00 AM 0.00 0.0 M M M
8/25/2018 7:00 AM 0.33 M M M M NWS gauge, 0.31 in CoCo gauge likely wind influenced, power outage so lost Davis TB amount. 0.25 inches came in violent northerly flow in TSTM 6:30 PM-7:30 PM. R- after that resulted in the greater total. Gusts to more than 50 mph before and during start of rain.
8/26/2018 7:00 AM T M M M M Several drops 4:45 PM, and again within half an hour. Major dump to NNE
8/27/2018 7:00 AM T M M M M Last vestiges of Cb rain column and a brief spatter of drops at 4:46 PM. Pulled car out from carport so a few drops wouldn't be missed, as trace kings do.
8/28/2018 7:00 AM 0.00 0.0 M M M
8/29/2018 7:00 AM 0.00 0.0 M M M
8/30/2018 7:00 AM 0.00 0.0 M M M
8/31/2018 7:00 AM 0.00 0.0 M M M
9/1/2018 7:00 AM 0.00 0.0 M M M
9/2/2018 7:00 AM 0.06 M M M M Fell just after 3 AM AST. 0.05 in NWS gauge, 0.04 inches indicated by Davis TB.
9/3/2018 7:00 AM 0.11 M M M M Evening rain. 0.10 inches NWS gauge, Davis out due to power outage. Lots of LTG in evening, thunder heard most of afternoon into late night hours.
9/4/2018 7:00 AM 0.00 0.0 M M M
9/5/2018 7:00 AM T M M M M Few scattered drops from Cb OMTNS NE
9/6/2018 7:00 AM 0.00 0.0 M M M
9/7/2018 7:00 AM 0.00 0.0 M M M Echo overhead late afternoon, possible isolated drops on car, may have missed a trace event.
9/8/2018 7:00 AM 0.00 0.0 M M M
9/9/2018 7:00 AM 0.00 0.0 M M M
9/10/2018 7:00 AM 0.00 0.0 M M M
9/11/2018 7:00 AM 0.00 0.0 M M M
9/12/2018 7:00 AM 0.00 0.0 M M M
9/13/2018 7:00 AM 0.00 0.0 M M M
9/14/2018 7:00 AM 0.00 0.0 M M M
9/15/2018 7:00 AM 0.00 0.0 M M M
9/16/2018 7:00 AM 0.00 0.0 M M M
9/17/2018 7:00 AM 0.17 M M M M Brief Large drops TSTM (one rumble) 3:30 PM. Tiny core. Sun was shining most of event. 0.14 inches in CoCo, 0.15 inches indicated by Davis TB, 0.17 inches measured in NWS 8-inch gauge. Not sure why CoCo is not undermeasuring.....
9/18/2018 7:00 AM 0.00 0.0 M M M
9/19/2018 7:00 AM 0.00 0.0 M M M
9/20/2018 7:00 AM 1.43 M M M M Several periods of R OCNLY R- during day. TSTM NW briefly around noon. 1.40 in NWS gauge, but only 1.16 inches indicated by Davis TB. No wind during this event.
9/21/2018 7:00 AM 0.00 0.0 M M M
9/22/2018 7:00 AM 0.00 0.0 M M M
9/23/2018 7:00 AM 0.00 0.0 M M M
9/24/2018 7:00 AM 0.00 0.0 M M M
9/25/2018 7:00 AM 0.00 0.0 M M M
9/26/2018 7:00 AM 0.00 0.0 M M M
9/27/2018 7:00 AM 0.00 0.0 M M M
9/28/2018 7:00 AM 0.00 0.0 M M M
9/29/2018 7:00 AM 0.00 0.0 M M M
9/30/2018 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



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