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 16 1.17 0.01 31 0.01 31 0.00 0 0 1 3 0.0 0 0
Nov 16 0.83 0.68 29 0.68 29 0.00 0 0 5 1 0.0 0 0
Dec 16 1.29 2.63 31 2.63 31 0.00 0 0 7 1 0.0 0 0
Jan 17 1.29 3.28 31 3.28 31 0.00 0 0 9 2 0.0 0 0
Feb 17 1.18 0.49 28 0.49 28 0.00 0 0 6 1 0.0 0 0
March 17 1.14 0.07 31 0.07 31 0.00 0 0 1 5 0.0 0 0
April 17 0.40 0.00 30 0.00 30 0.00 0 0 0 2 0.0 0 0
May 17 0.25 0.37 30 0.37 30 0.00 0 0 2 1 0.0 0 0
June 17 0.30 0.00 30 0.00 30 0.00 0 0 0 0 0.0 0 0
July 17 2.10 8.65 31 8.65 31 0.00 0 0 14 3 0.0 0 0
Aug 17 2.92 1.10 31 1.10 31 0.00 0 0 5 5 0.0 0 0
Sept 17 1.40 0.69 30 0.69 30 0.00 0 0 2 4 0.0 0 0
Water Year Totals: 14.27" 17.97" 363 days 17.97" 363 0.00" 0 days 0 52 days 28 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 T
10/2/2016 0.00
10/3/2016 T
10/4/2016 0.00
10/5/2016 0.00
10/6/2016 0.00
10/7/2016 0.00
10/8/2016 0.00
10/9/2016 T
10/10/2016 0.00
10/11/2016 0.00
10/12/2016 0.00
10/13/2016 0.00
10/14/2016 0.00
10/15/2016 0.00
10/16/2016 0.00
10/17/2016 0.00
10/18/2016 0.00
10/19/2016 0.00
10/20/2016 0.00
10/21/2016 0.00
10/22/2016 0.00
10/23/2016 0.00
10/24/2016 0.00
10/25/2016 0.01
10/26/2016 0.00
10/27/2016 0.00
10/28/2016 0.00
10/29/2016 0.00
10/30/2016 0.00
10/31/2016 0.00
11/1/2016 0.00
11/2/2016 0.00
11/3/2016 0.15
11/4/2016 0.19
11/5/2016 0.00
11/6/2016 0.00
11/7/2016 0.00
11/8/2016 0.00
11/9/2016 0.00
11/10/2016 0.00
11/11/2016 0.00
11/12/2016 0.00
11/13/2016 0.00
11/14/2016 0.00
11/15/2016 0.00
11/16/2016 0.00
11/17/2016 0.00
11/18/2016 0.00
11/19/2016
11/20/2016 0.00
11/21/2016 0.05
11/22/2016 0.19
11/23/2016 0.00
11/24/2016 0.00
11/25/2016 0.00
11/26/2016 0.00
11/27/2016 T
11/28/2016 0.10
11/29/2016 0.00
11/30/2016 0.00
12/1/2016 0.00
12/2/2016 0.00
12/3/2016 0.00
12/4/2016 0.00
12/5/2016 0.00
12/6/2016 0.00
12/7/2016 0.00
12/8/2016 0.00
12/9/2016 0.00
12/10/2016 0.00
12/11/2016 0.00
12/12/2016 0.00
12/13/2016 0.00
12/14/2016 0.00
12/15/2016 0.00
12/16/2016 0.02
12/17/2016 0.51
12/18/2016 0.00
12/19/2016 0.00
12/20/2016 0.00
12/21/2016 0.11
12/22/2016 0.34
12/23/2016 0.58
12/24/2016 0.00
12/25/2016 0.68
12/26/2016 T
12/27/2016 0.00
12/28/2016 0.00
12/29/2016 0.00
12/30/2016 0.00
12/31/2016 0.39
Day of YearDaily PrcpMultiday Prcp
1/1/2017 0.32
1/2/2017 0.24
1/3/2017 0.00
1/4/2017 0.00
1/5/2017 0.00
1/6/2017 0.00
1/7/2017 0.00
1/8/2017 0.00
1/9/2017 0.00
1/10/2017 0.00
1/11/2017 0.00
1/12/2017 0.00
1/13/2017 0.00
1/14/2017 T
1/15/2017 0.73
1/16/2017 0.34
1/17/2017 T
1/18/2017 0.00
1/19/2017 0.00
1/20/2017 0.12
1/21/2017 1.26
1/22/2017 0.04
1/23/2017 0.00
1/24/2017 0.22
1/25/2017 0.01
1/26/2017 0.00
1/27/2017 0.00
1/28/2017 0.00
1/29/2017 0.00
1/30/2017 0.00
1/31/2017 0.00
2/1/2017 0.00
2/2/2017 0.00
2/3/2017 0.00
2/4/2017 0.00
2/5/2017 0.00
2/6/2017 0.00
2/7/2017 0.00
2/8/2017 0.00
2/9/2017 0.00
2/10/2017 0.00
2/11/2017 0.00
2/12/2017 0.00
2/13/2017 0.03
2/14/2017 0.03
2/15/2017 0.04
2/16/2017 0.00
2/17/2017 0.00
2/18/2017 0.00
2/19/2017 0.24
2/20/2017 0.09
2/21/2017 0.00
2/22/2017 0.00
2/23/2017 0.00
2/24/2017 0.00
2/25/2017 0.00
2/26/2017 0.00
2/27/2017 T
2/28/2017 0.06
3/1/2017 0.07
3/2/2017 0.00
3/3/2017 0.00
3/4/2017 0.00
3/5/2017 0.00
3/6/2017 T
3/7/2017 0.00
3/8/2017 0.00
3/9/2017 0.00
3/10/2017 0.00
3/11/2017 0.00
3/12/2017 0.00
3/13/2017 0.00
3/14/2017 0.00
3/15/2017 0.00
3/16/2017 0.00
3/17/2017 0.00
3/18/2017 0.00
3/19/2017 0.00
3/20/2017 0.00
3/21/2017 0.00
3/22/2017 0.00
3/23/2017 T
3/24/2017 T
3/25/2017 0.00
3/26/2017 0.00
3/27/2017 0.00
3/28/2017 T
3/29/2017 0.00
3/30/2017 0.00
3/31/2017 T
Day of YearDaily PrcpMultiday Prcp
4/1/2017 T
4/2/2017 T
4/3/2017 0.00
4/4/2017 0.00
4/5/2017 0.00
4/6/2017 0.00
4/7/2017 0.00
4/8/2017 0.00
4/9/2017 0.00
4/10/2017 0.00
4/11/2017 0.00
4/12/2017 0.00
4/13/2017 0.00
4/14/2017 0.00
4/15/2017 0.00
4/16/2017 0.00
4/17/2017 0.00
4/18/2017 0.00
4/19/2017 0.00
4/20/2017 0.00
4/21/2017 0.00
4/22/2017 0.00
4/23/2017 0.00
4/24/2017 0.00
4/25/2017 0.00
4/26/2017 0.00
4/27/2017 0.00
4/28/2017 0.00
4/29/2017 0.00
4/30/2017 0.00
5/1/2017 0.00
5/2/2017 0.00
5/3/2017 0.00
5/4/2017 0.00
5/5/2017 0.00
5/6/2017 0.00
5/7/2017 0.00
5/8/2017
5/9/2017 0.34
5/10/2017 0.03
5/11/2017 0.00
5/12/2017 0.00
5/13/2017 0.00
5/14/2017 0.00
5/15/2017 0.00
5/16/2017 0.00
5/17/2017 T
5/18/2017 0.00
5/19/2017 0.00
5/20/2017 0.00
5/21/2017 0.00
5/22/2017 0.00
5/23/2017 0.00
5/24/2017 0.00
5/25/2017 0.00
5/26/2017 0.00
5/27/2017 0.00
5/28/2017 0.00
5/29/2017 0.00
5/30/2017 0.00
5/31/2017 0.00
6/1/2017 0.00
6/2/2017 0.00
6/3/2017 0.00
6/4/2017 0.00
6/5/2017 0.00
6/6/2017 0.00
6/7/2017 0.00
6/8/2017 0.00
6/9/2017 0.00
6/10/2017 0.00
6/11/2017 0.00
6/12/2017 0.00
6/13/2017 0.00
6/14/2017 0.00
6/15/2017 0.00
6/16/2017 0.00
6/17/2017 0.00
6/18/2017 0.00
6/19/2017 0.00
6/20/2017 0.00
6/21/2017 0.00
6/22/2017 0.00
6/23/2017 0.00
6/24/2017 0.00
6/25/2017 0.00
6/26/2017 0.00
6/27/2017 0.00
6/28/2017 0.00
6/29/2017 0.00
6/30/2017 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2017 0.00
7/2/2017 0.00
7/3/2017 0.00
7/4/2017 0.00
7/5/2017 0.00
7/6/2017 0.00
7/7/2017 0.00
7/8/2017 0.00
7/9/2017 0.00
7/10/2017 T
7/11/2017 0.50
7/12/2017 0.00
7/13/2017 1.40
7/14/2017 0.31
7/15/2017 0.21
7/16/2017 0.50
7/17/2017 0.57
7/18/2017 0.10
7/19/2017 0.21
7/20/2017 3.36
7/21/2017 0.44
7/22/2017 0.00
7/23/2017 0.33
7/24/2017 0.07
7/25/2017 T
7/26/2017 0.00
7/27/2017 0.00
7/28/2017 T
7/29/2017 0.00
7/30/2017 0.48
7/31/2017 0.17
8/1/2017 T
8/2/2017 0.04
8/3/2017 T
8/4/2017 T
8/5/2017 0.00
8/6/2017 0.00
8/7/2017 0.00
8/8/2017 0.00
8/9/2017 0.00
8/10/2017 0.14
8/11/2017 0.04
8/12/2017 0.00
8/13/2017 0.78
8/14/2017 0.00
8/15/2017 0.00
8/16/2017 T
8/17/2017 0.00
8/18/2017 0.00
8/19/2017 0.00
8/20/2017 0.00
8/21/2017 0.00
8/22/2017 0.00
8/23/2017 0.00
8/24/2017 0.10
8/25/2017 0.00
8/26/2017 0.00
8/27/2017 0.00
8/28/2017 T
8/29/2017 0.00
8/30/2017 0.00
8/31/2017 0.00
9/1/2017 0.00
9/2/2017 0.00
9/3/2017 0.00
9/4/2017 0.00
9/5/2017 0.04
9/6/2017 0.00
9/7/2017 0.00
9/8/2017 T
9/9/2017 0.65
9/10/2017 0.00
9/11/2017 0.00
9/12/2017 0.00
9/13/2017 0.00
9/14/2017 T
9/15/2017 T
9/16/2017 T
9/17/2017 0.00
9/18/2017 0.00
9/19/2017 0.00
9/20/2017 0.00
9/21/2017 0.00
9/22/2017 0.00
9/23/2017 0.00
9/24/2017 0.00
9/25/2017 0.00
9/26/2017 0.00
9/27/2017 0.00
9/28/2017 0.00
9/29/2017 0.00
9/30/2017 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2016 7:00 AM T M M M M Sprinkles from remnant debris cloud, 2:50-3:00 PM. Another few drops around 5:50 PM from a similar debris cloud.
10/2/2016 7:00 AM 0.00 0.0 M M M
10/3/2016 7:00 AM T M M M M Frequent sprinkles during day.
10/4/2016 7:00 AM 0.00 0.0 M M M
10/5/2016 7:00 AM 0.00 0.0 M M M
10/6/2016 7:00 AM 0.00 0.0 M M M
10/7/2016 7:00 AM 0.00 0.0 M M M
10/8/2016 7:00 AM 0.00 0.0 M M M
10/9/2016 7:00 AM T M M M M Strong evening storms nearby, OCNL LTGICCCCG, but shafts, of course, missed us. RW-- 5:50 PM.
10/10/2016 7:00 AM 0.00 0.0 M M M
10/11/2016 7:00 AM 0.00 0.0 M M M
10/12/2016 7:00 AM 0.00 0.0 M M M
10/13/2016 7:00 AM 0.00 0.0 M M M
10/14/2016 7:00 AM 0.00 0.0 M M M
10/15/2016 7:00 AM 0.00 0.0 M M M
10/16/2016 7:00 AM 0.00 0.0 M M M
10/17/2016 7:00 AM 0.00 0.0 M M M
10/18/2016 7:00 AM 0.00 0.0 M M M
10/19/2016 7:00 AM 0.00 0.0 M M M Another day, another zero.
10/20/2016 7:00 AM 0.00 0.0 M M M
10/21/2016 7:00 AM 0.00 0.0 M M M
10/22/2016 7:00 AM 0.00 0.0 M M M
10/23/2016 7:00 AM 0.00 0.0 M M M
10/24/2016 7:00 AM 0.00 0.0 M M M
10/25/2016 7:00 AM 0.01 M M M M CoCo gauge, NWS gauge, 0.02 inches, Davis TB did not. Late AFTN EVE weak TSTMS, spkls.
10/26/2016 7:00 AM 0.00 0.0 M M M
10/27/2016 7:00 AM 0.00 0.0 M M M
10/28/2016 7:00 AM 0.00 0.0 M M M
10/29/2016 7:00 AM 0.00 0.0 M M M
10/30/2016 7:00 AM 0.00 0.0 M M M
10/31/2016 7:00 AM 0.00 0.0 M M M
11/1/2016 7:00 AM 0.00 0.0 M M M
11/2/2016 7:00 AM 0.00 0.0 M M M
11/3/2016 7:00 AM 0.15 M M M M 0.15 inches CoCo gauge, 0.15 inches NWS gauge, 0.14 inches indicated by Davis TB. TSTMS moved in after 1 AM, ending before 4 AM AST.
11/4/2016 7:00 AM 0.19 M M M M 0,19 in CoCo gauge, 0.19 in 8-inch NWS style gauge, and 0.18 indicated by Davis TB. Rain occurred in brief afternoon and evening showers. Hail just smaller than pea-sized observed.
11/5/2016 7:00 AM 0.00 0.0 M M M
11/6/2016 7:00 AM 0.00 0.0 M M M
11/7/2016 7:00 AM 0.00 0.0 M M M
11/8/2016 7:00 AM 0.00 0.0 M M M
11/9/2016 7:00 AM 0.00 0.0 M M M
11/10/2016 7:00 AM 0.00 0.0 M M M
11/11/2016 7:00 AM 0.00 0.0 M M M
11/12/2016 7:00 AM 0.00 0.0 M M M
11/13/2016 7:00 AM 0.00 0.0 M M M
11/14/2016 7:00 AM 0.00 0.0 M M M
11/15/2016 7:00 AM 0.00 0.0 M M M
11/16/2016 7:00 AM 0.00 0.0 M M M
11/17/2016 7:00 AM 0.00 0.0 M M M
11/18/2016 7:00 AM 0.00 0.0 M M M
11/20/2016 7:00 AM 0.00 0.0 M M M
11/21/2016 7:00 AM 0.05 M M M M 0.05 Coco gauge, 0.04 inches NWS gauge, 0.03 inched indicated by Davis TB. Wind likely a factor, generally 15-25 mph during precip. TSTM W MVG N 7:35 LST
11/22/2016 7:00 AM 0.19 M M M M INTMT TSTMS, windy. 0.19 inches in CoCo gauge, 0.18 inches in NWS gauge, 0.18 inches indicated by Davis TB.
11/23/2016 7:00 AM 0.00 0.0 M M M
11/24/2016 7:00 AM 0.00 0.0 M M M
11/25/2016 7:00 AM 0.00 0.0 M M M
11/26/2016 7:00 AM 0.00 0.0 M M M
11/27/2016 7:00 AM T M M M M Smattering of drops on car; fell overnight.
11/28/2016 7:00 AM 0.10 M M M M Fell just before midnight. 0.10 in CoCo gauge, 0.10 in NWS-style gauge, 0.07 inches indicated by Davis TB. Windy during event ; likely compromised Davis TB amount.
11/29/2016 7:00 AM 0.00 0.0 M M M Coulda been a few drops overnight according to radar.
11/30/2016 7:00 AM 0.00 0.0 M M M
12/1/2016 7:00 AM 0.00 0.0 M M M
12/2/2016 7:00 AM 0.00 0.0 M M M
12/3/2016 7:00 AM 0.00 0.0 M M M
12/4/2016 7:00 AM 0.00 0.0 M M M
12/5/2016 7:00 AM 0.00 0.0 M M M
12/6/2016 7:00 AM 0.00 0.0 M M M
12/7/2016 7:00 AM 0.00 0.0 M M M
12/8/2016 7:00 AM 0.00 0.0 M M M
12/9/2016 7:00 AM 0.00 0.0 M M M
12/10/2016 7:00 AM 0.00 0.0 M M M
12/11/2016 7:00 AM 0.00 0.0 M M M
12/12/2016 7:00 AM 0.00 0.0 M M M
12/13/2016 7:00 AM 0.00 0.0 M M M
12/14/2016 7:00 AM 0.00 0.0 M M M
12/15/2016 7:00 AM 0.00 0.0 M M M
12/16/2016 7:00 AM 0.02 M M M M Fell between 3 AM and 6 AM as R-- or R---. 0.02 inches in NWS style gauge, 0.02 inches in CoCo gauge, 0.01 inches indicated by Davis TB.
12/17/2016 7:00 AM 0.51 M M M M Fell between 2:50 and 4:30 AM. Wind gusts preceding FROPA over 40 kts. 0.51 inches in NWS-style gauge, 0.45 inches in CoCo gauge (likely affected by wind and vegetation this time, only 0.35 inches in Davis TB.
12/18/2016 7:00 AM 0.00 0.0 M M M
12/19/2016 7:00 AM 0.00 0.0 M M M
12/20/2016 7:00 AM 0.00 0.0 M M M
12/21/2016 7:00 AM 0.11 M M M M Began overnight. 0.11 in CoCo and NWS style gauge, only 0.07 inches indicated by Davis TB.
12/22/2016 7:00 AM 0.34 M M M M 0.34 inches in CoCo gauge, 0.33 inches in NWS-stye gauge, only 0.27 inches indicated by Davis TB. Breezy during rain, most of which fell between 9:30 PM and midnight.
12/23/2016 7:00 AM 0.58 M M M M 0.58 inches logged by ground mounted CoCo gauge, 0.56 inches in NWS style gauge, and 0.41 inches indicated by Davis TB. Rainrate was excessive with about half an inch falling in 18 min. Windy at times as well, both factors compromising Davis measurement. Davis gauge sits about six feet off the ground. Frequent thunder during event, no CG strikes seen.
12/24/2016 7:00 AM 0.00 0.0 M M M
12/25/2016 7:00 AM 0.68 M M M M 0.68 in ground mounted CoCo gauge, 0.62 in HWS style 8-inch gauge, but only 0.52 indicated by Davis TB. Gust to 60 mph before precip. Rain was steady R for several hours. No gushes, no LTG.
12/26/2016 7:00 AM T M M M M Brief RW--, graupel in mid-day hours.
12/27/2016 7:00 AM 0.00 0.0 M M M
12/28/2016 7:00 AM 0.00 0.0 M M M
12/29/2016 7:00 AM 0.00 0.0 M M M
12/30/2016 7:00 AM 0.00 0.0 M M M
12/31/2016 7:00 AM 0.39 M M M M Most fell in the hour before midnight. 0.39 in CoCo gauge, 0.38 inches in NWS-8 inch gauge, 034 indicated by Davis TB.
1/1/2017 7:00 AM 0.32 M M M M Rain mostly fell prior day in passing RW- most of day. Amount from ground mounted CoCo gauge, 0.30 in 8-inch gauge, 0.25 inches indicated by Davis TB (clearly needs work).
1/2/2017 7:00 AM 0.24 M M M M Three periods of RW-- to briefly R- during day. 0.24 inches in CoCo gauge, 0.22 inches in NWS gauge, and 0.17 inches indicated by Davis TB.
1/3/2017 7:00 AM 0.00 0.0 M M M
1/4/2017 7:00 AM 0.00 0.0 M M M
1/5/2017 7:00 AM 0.00 0.0 M M M
1/6/2017 7:00 AM 0.00 0.0 M M M
1/7/2017 7:00 AM 0.00 0.0 M M M
1/8/2017 7:00 AM 0.00 0.0 M M M
1/9/2017 7:00 AM 0.00 0.0 M M M
1/10/2017 7:00 AM 0.00 0.0 M M M
1/11/2017 7:00 AM 0.00 0.0 M M M
1/12/2017 7:00 AM 0.00 0.0 M M M
1/13/2017 7:00 AM 0.00 0.0 M M M
1/14/2017 7:00 AM T M M M M SPKL just before ob time from mid-level BKN layer.
1/15/2017 7:00 AM 0.73 M M M M Value from CoCo gauge, NWS gauge, 0.68 inches, Davis TB, 063 inches indicated. R two hours before ob time almost doubled 24 h total.
1/16/2017 7:00 AM 0.34 M M M M 0.34 in CoCo gauge, 0.31 inches in 8-inch NWS gauge, 0.25 inches indicated by Davis TB. A day and early evening of INTMT R- to L-- and very low ceilings.
1/17/2017 7:00 AM T M M M M Sparse, small drop SPKL at 4:25 PM.
1/18/2017 7:00 AM 0.00 0.0 M M M
1/19/2017 7:00 AM 0.00 0.0 M M M
1/20/2017 7:00 AM 0.12 M M M M
1/21/2017 7:00 AM 1.26 M M M M Most fell after dark with TRW++ around 1 AM. 1.21 inches in NWS gauge. 1.13 inches indicated by Davis TB. Was overwhelmed by extreme rain rates in TRW++. Graupel or hail occurred with TSTM, gusts estimated at 50 mph.
1/22/2017 7:00 AM 0.04 M M M M OCNL RW- 7 AM-NOON, 0.04 in both CoCo and NWS style gauges, 0.03 inched indicated by Davis TB.
1/23/2017 7:00 AM 0.00 0.0 M M M
1/24/2017 7:00 AM 0.22 M M M M R- fell after dark, with only 0.01 inches after midnight. 0.20 inches in NWS style 8-inch gauge, 0.18 inches indicated by Davis TB. Wind not much of a factor in precip.
1/25/2017 7:00 AM 0.01 M M M M Hard shower for about 1 minute, 9:20 AM. 0.01 in all gauges.
1/26/2017 7:00 AM 0.00 0.0 M M M
1/27/2017 7:00 AM 0.00 0.0 M M M
1/28/2017 7:00 AM 0.00 0.0 M M M
1/29/2017 7:00 AM 0.00 0.0 M M M
1/30/2017 7:00 AM 0.00 0.0 M M M
1/31/2017 7:00 AM 0.00 0.0 M M M
2/1/2017 7:00 AM 0.00 0.0 M M M
2/2/2017 7:00 AM 0.00 0.0 M M M
2/3/2017 7:00 AM 0.00 0.0 M M M
2/4/2017 7:00 AM 0.00 0.0 M M M
2/5/2017 7:00 AM 0.00 0.0 M M M
2/6/2017 7:00 AM 0.00 0.0 M M M
2/7/2017 7:00 AM 0.00 0.0 M M M
2/8/2017 7:00 AM 0.00 0.0 M M M
2/9/2017 7:00 AM 0.00 0.0 M M M
2/10/2017 7:00 AM 0.00 0.0 M M M
2/11/2017 7:00 AM 0.00 0.0 M M M
2/12/2017 7:00 AM 0.00 0.0 M M M
2/13/2017 7:00 AM 0.03 M M M M 0.03 in CoCo gauge, 0.03 in NWS 8-inch gauge, 0.02 indicated by Davis TB. Fell between 1 and 2 AM as TRW-. AFTN TSTMS left only a trace.
2/14/2017 7:00 AM 0.03 0.0 M M M R- moved in just before 7 AM. 0.03 inches CoCo gauge, 0.03 inches NWS 8-inch gauge, 0.02 inches indicated by Davis TB.
2/15/2017 7:00 AM 0.04 M M M M 0.04 in CoCo gauge, 0.04 inches in NWS-style 8-inch gauge, 0.03 inches indicated by Davis TB. R- fell before 10 AM.
2/16/2017 7:00 AM 0.00 0.0 M M M
2/17/2017 7:00 AM 0.00 0.0 M M M
2/18/2017 7:00 AM 0.00 0.0 M M M
2/19/2017 7:00 AM 0.24 M M M M Windy during rain. 0.24 CoCo gauge. 0.21 inches NWS 8-inch gauge (now less wind protected since partial collapse of surrounding prickly pear), 0.18 inches indicated by Davis TB.
2/20/2017 7:00 AM 0.09 M M M M 0.07 inches of this fell around midnight. 0.09 inches in CoCo gauge, 0.09 inches in NWS-style gauge, 0.08 inches indicated by Davis TB.
2/21/2017 7:00 AM 0.00 0.0 M M M
2/22/2017 7:00 AM 0.00 0.0 M M M
2/23/2017 7:00 AM 0.00 0.0 M M M
2/24/2017 7:00 AM 0.00 0.0 M M M
2/25/2017 7:00 AM 0.00 0.0 M M M
2/26/2017 7:00 AM 0.00 0.0 M M M
2/27/2017 7:00 AM T M M M M Sprinkle from mid-level As clouds between 2 and 3 PM.
2/28/2017 7:00 AM 0.06 M M M M Fell in the late afternoon, then before midnight. 0.06 inches in CoCo gauge, 0.05 inches in NWS gauge, 0.04 inches indicated by Davis TB.
3/1/2017 7:00 AM 0.07 M M M M Afternoon RW- from passing Cbs. 0.07 inches in CoCo gauge, 0.07 inches in NWS 8-inch gauge, 0.06 inches indicated by Davis TB.
3/2/2017 7:00 AM 0.00 0.0 M M M
3/3/2017 7:00 AM 0.00 0.0 M M M
3/4/2017 7:00 AM 0.00 0.0 M M M
3/5/2017 7:00 AM 0.00 0.0 M M M
3/6/2017 7:00 AM T M M M M SW-NE streak of virga produced a few drops to the ground between 6:30 and 6:40 PM.
3/7/2017 7:00 AM 0.00 0.0 M M M
3/8/2017 7:00 AM 0.00 0.0 M M M
3/9/2017 7:00 AM 0.00 0.0 M M M
3/10/2017 7:00 AM 0.00 0.0 M M M
3/11/2017 7:00 AM 0.00 0.0 M M M
3/12/2017 7:00 AM 0.00 0.0 M M M
3/13/2017 7:00 AM 0.00 0.0 M M M
3/14/2017 7:00 AM 0.00 0.0 M M M
3/15/2017 7:00 AM 0.00 0.0 M M M
3/16/2017 7:00 AM 0.00 0.0 M M M
3/17/2017 7:00 AM 0.00 0.0 M M M
3/18/2017 7:00 AM 0.00 0.0 M M M
3/19/2017 7:00 AM 0.00 0.0 M M M
3/20/2017 7:00 AM 0.00 0.0 M M M
3/21/2017 7:00 AM 0.00 0.0 M M M
3/22/2017 7:00 AM 0.00 0.0 M M M
3/23/2017 7:00 AM T M M M M RW-- at ob time.
3/24/2017 7:00 AM T M M M M
3/25/2017 7:00 AM 0.00 0.0 M M M
3/26/2017 7:00 AM 0.00 0.0 M M M
3/27/2017 7:00 AM 0.00 0.0 M M M
3/28/2017 7:00 AM T M M M M From SCTD TSTMS after mid-night.
3/29/2017 7:00 AM 0.00 0.0 M M M
3/30/2017 7:00 AM 0.00 0.0 M M M
3/31/2017 7:00 AM T M M M M Sparse drops falling at ob time.
4/1/2017 7:00 AM T M M M M A few sparse drops fell at ob time and just afterwards yesterday.
4/2/2017 7:00 AM T M M M M A few afternoon small, sparse drops from a icy overcast based above the top of Mt. Lemmon, or above 9,000 feet. Lots of virga around.
4/3/2017 7:00 AM 0.00 0.0 M M M
4/4/2017 7:00 AM 0.00 0.0 M M M
4/5/2017 7:00 AM 0.00 0.0 M M M
4/6/2017 7:00 AM 0.00 0.0 M M M
4/7/2017 7:00 AM 0.00 0.0 M M M
4/8/2017 7:00 AM 0.00 0.0 M M M
4/9/2017 7:00 AM 0.00 0.0 M M M
4/10/2017 7:00 AM 0.00 0.0 M M M
4/11/2017 7:00 AM 0.00 0.0 M M M
4/12/2017 7:00 AM 0.00 0.0 M M M
4/13/2017 7:00 AM 0.00 0.0 M M M
4/14/2017 7:00 AM 0.00 0.0 M M M
4/15/2017 7:00 AM 0.00 0.0 M M M
4/16/2017 7:00 AM 0.00 0.0 M M M
4/17/2017 7:00 AM 0.00 0.0 M M M
4/18/2017 7:00 AM 0.00 0.0 M M M
4/19/2017 7:00 AM 0.00 0.0 M M M
4/20/2017 7:00 AM 0.00 0.0 M M M
4/21/2017 7:00 AM 0.00 0.0 M M M
4/22/2017 7:00 AM 0.00 0.0 M M M
4/23/2017 7:00 AM 0.00 0.0 M M M
4/24/2017 7:00 AM 0.00 0.0 M M M
4/25/2017 7:00 AM 0.00 0.0 M M M
4/26/2017 7:00 AM 0.00 0.0 M M M
4/27/2017 7:00 AM 0.00 0.0 M M M
4/28/2017 7:00 AM 0.00 0.0 M M M
4/29/2017 7:00 AM 0.00 0.0 M M M
4/30/2017 7:00 AM 0.00 0.0 M M M
5/1/2017 7:00 AM 0.00 0.0 M M M
5/2/2017 7:00 AM 0.00 0.0 M M M
5/3/2017 7:00 AM 0.00 0.0 M M M
5/4/2017 7:00 AM 0.00 0.0 M M M
5/5/2017 7:00 AM 0.00 0.0 M M M
5/6/2017 7:00 AM 0.00 0.0 M M M
5/7/2017 7:00 AM 0.00 0.0 M M M
5/9/2017 7:00 AM 0.34 M M M M Fell in three groups overnight. Wind gusted to 45-50 mph just after 2 AM. 0.31 inches in NWS gauge. Only 0.24 inches indicated by Davis TB.
5/10/2017 7:00 AM 0.03 M M M M Due to several RW- during day. 0.03 inches in CoCo, 0.03 inches in NWS gauge, 0.01 indicated by Davis TB.
5/11/2017 7:00 AM 0.00 0.0 M M M
5/12/2017 7:00 AM 0.00 0.0 M M M
5/13/2017 7:00 AM 0.00 0.0 M M M
5/14/2017 7:00 AM 0.00 0.0 M M M
5/15/2017 7:00 AM 0.00 0.0 M M M
5/16/2017 7:00 AM 0.00 0.0 M M M
5/17/2017 7:00 AM T M M M M Several periods of a few drops between 3:35 and 4:05 PM. Would never have known if hadn't been outside walking the dogs they were that minimal.
5/18/2017 7:00 AM 0.00 0.0 M M M
5/19/2017 7:00 AM 0.00 0.0 M M M
5/20/2017 7:00 AM 0.00 0.0 M M M
5/21/2017 7:00 AM 0.00 0.0 M M M
5/22/2017 7:00 AM 0.00 0.0 M M M
5/23/2017 7:00 AM 0.00 0.0 M M M
5/24/2017 7:00 AM 0.00 0.0 M M M
5/25/2017 7:00 AM 0.00 0.0 M M M
5/26/2017 7:00 AM 0.00 0.0 M M M
5/27/2017 7:00 AM 0.00 0.0 M M M
5/28/2017 7:00 AM 0.00 0.0 M M M
5/29/2017 7:00 AM 0.00 0.0 M M M
5/30/2017 7:00 AM 0.00 0.0 M M M
5/31/2017 7:00 AM 0.00 0.0 M M M
6/1/2017 7:00 AM 0.00 0.0 M M M
6/2/2017 7:00 AM 0.00 0.0 M M M
6/3/2017 7:00 AM 0.00 0.0 M M M
6/4/2017 7:00 AM 0.00 0.0 M M M
6/5/2017 7:00 AM 0.00 0.0 M M M
6/6/2017 7:00 AM 0.00 0.0 M M M
6/7/2017 7:00 AM 0.00 0.0 M M M
6/8/2017 7:00 AM 0.00 0.0 M M M
6/9/2017 7:00 AM 0.00 0.0 M M M
6/10/2017 7:00 AM 0.00 0.0 M M M
6/11/2017 7:00 AM 0.00 0.0 M M M
6/12/2017 7:00 AM 0.00 0.0 M M M
6/13/2017 7:00 AM 0.00 0.0 M M M
6/14/2017 7:00 AM 0.00 0.0 M M M
6/15/2017 7:00 AM 0.00 0.0 M M M
6/16/2017 7:00 AM 0.00 0.0 M M M
6/17/2017 7:00 AM 0.00 0.0 M M M
6/18/2017 7:00 AM 0.00 0.0 M M M
6/19/2017 7:00 AM 0.00 0.0 M M M
6/20/2017 7:00 AM 0.00 0.0 M M M
6/21/2017 7:00 AM 0.00 0.0 M M M
6/22/2017 7:00 AM 0.00 0.0 M M M
6/23/2017 7:00 AM 0.00 0.0 M M M
6/24/2017 7:00 AM 0.00 0.0 M M M
6/25/2017 7:00 AM 0.00 0.0 M M M
6/26/2017 7:00 AM 0.00 0.0 M M M
6/27/2017 7:00 AM 0.00 0.0 M M M
6/28/2017 7:00 AM 0.00 0.0 M M M
6/29/2017 7:00 AM 0.00 0.0 M M M
6/30/2017 7:00 AM 0.00 0.0 M M M
7/1/2017 7:00 AM 0.00 0.0 M M M
7/2/2017 7:00 AM 0.00 0.0 M M M
7/3/2017 7:00 AM 0.00 0.0 M M M
7/4/2017 7:00 AM 0.00 0.0 M M M
7/5/2017 7:00 AM 0.00 0.0 M M M
7/6/2017 7:00 AM 0.00 0.0 M M M
7/7/2017 7:00 AM 0.00 0.0 M M M
7/8/2017 7:00 AM 0.00 0.0 M M M
7/9/2017 7:00 AM 0.00 0.0 M M M
7/10/2017 7:00 AM T M M M M Very brief spkls 12:25 PM, and around 5 PM.
7/11/2017 7:00 AM 0.50 M M M M NWS gauge amount, 0.48 in CoCo gauge that was tilted slightly, and 0.41 inches indicated by Davis TB. Almost always the CoCo gauge registers a hundredth or two more than the NWS gauge, but not this time.
7/12/2017 7:00 AM 0.00 0.0 M M M
7/13/2017 7:00 AM 1.40 M M M M Replaced value with neighbor's CoCo gauge amount, 100 m W due to wind losses at other gauges. Fell just after dark. VSBY OCNLY down to a few hundred yards, wind gusts to 50 mph. FQT LTIC, FEW ground strikes. 1.06 in CoCo gauge shadowed from the persistent and strong NE wind by a small rise in terrain. Davis TB, 1.24 inches.
7/14/2017 7:00 AM 0.31 M M M M CoCo gauge relocated about 10 m W of prior location to avoid shadowing by a small rise in strong NE winds. 0.28 inches in NWS gauge, 0.27 inches indicated by Davis TB. Nearly identical winds and rain in this episode as the prior evening's. A wind-protected CoCo gauge 100 m W on that night recorded 1.40 inches, NWS 1.26 inches, CoCo here, 1.06! Now believe 1.40 inches was the more accurate total for the prior storm.
7/15/2017 7:00 AM 0.21 M M M M 0,18 indicated by Davis TB, 0.19 inches in 8-inch NWS style gauge. Nearly identical situation in late afternoon as Cb complex moved in fm NE with gusty winds, puffs over 50 mph. Moved in after 4:50 PM.
7/16/2017 7:00 AM 0.50 M M M M CoCo gauge, 0.47 inches NWS-8 -inch gauge, 0.41 inched indicated by Davis TB. Three periods of rain with OCNL LTG between 9:30 and 11:30 PM. July total, 3.02 inches, now over monthly long term average.
7/17/2017 7:00 AM 0.57 M M M M 0.02 in brief early afternoon TSTM, rest in after-dark TSTMs, 2 separate events ending after midnight. First one had almost CONTUS LTGIC. 0.54 inches in 8-inch NWS gauge, 0.50 inches indicated by Davis TB.
7/18/2017 7:00 AM 0.10 M M M M All fell in AFTN TRW-. 0.10 inches in NWS-style 8-inch gauge, 0.10 inches indicated in Davis TB as well.
7/19/2017 7:00 AM 0.21 M M M M 0.19 in NWS 8-inch gauge, LTG strike on property compromised Davis TB data. All fell in one long TRW-, cores dumped repeatedly on Samaniego Ridge, causing heavy flow in the Sutherland Wash S of the "Cottonwoods". No flow N of that point. Could hear wash running furiously from home, about 2 mi away.
7/20/2017 7:00 AM 3.36 M M M M Fell between 11 AM and 4 PM in a series of very localized TSTMS that kept spawning off Ms. Mt. Lemmon. VSBY OCNLY down to 100 yards in TRW++. Numerous strikes in neighborhood, though the first half inch fell sans LTG. OCNL brief episodes of gusty winds from different directions to about 30 mph suggesting new core dumps nearby. 3.37 inches in NWS style 8-inch gauge, only 2.91 inches indicated by Davis TB. Poor guy was likely overwhelmed by rain intensity, and some losses during windy episodes.
7/21/2017 7:00 AM 0.44 M M M M 0.43 inches in NWS 8-inch gauge, 0.39 inches indicated by Davis TB. Fell as TRW-, TRW--, and briefly RW between 6PM and 9 PM local.
7/22/2017 7:00 AM 0.00 0.0 M M M First day without measurable rain ending a streak of nine consecutive days, a record for Catalina (since 1977). Prior record was seven days in a row with measurable rain. TRW developed almost overhead late, but no drops!
7/23/2017 7:00 AM 0.33 M M M M 0.31 inches in NWS gauge, 0.28 indicated by Davis TB. Fierce but short-lived storm hit about 5:45 PM, followed by a long spell of stratiform R-.
7/24/2017 7:00 AM 0.07 M M M M CoCo gauge, 0.06 inches NWS gauge, 0.05 indicated by Davis TB. Several very brief showers during day from Cb top overhands; ended with stratiform R-- for a couple of hours.
7/25/2017 7:00 AM T M M M M Isolated small drops fell between 3:15 and 4:15 PM.
7/26/2017 7:00 AM 0.00 0.0 M M M
7/27/2017 7:00 AM 0.00 0.0 M M M
7/28/2017 7:00 AM T M M M M A few small drops fell after 5 PM from stratiform remains of Cb complex.
7/29/2017 7:00 AM 0.00 0.0 M M M Radar suggests a trace fell overnight.
7/30/2017 7:00 AM 0.48 M M M M Fell in late afternoon through early evening covering several hours. Rather gentle here for a TSTM. O.45 inches in NWS 8-inch gauge, 0.37 inches indicated by Davis TB.
7/31/2017 7:00 AM 0.17 M M M M 0.15 inches in NWS-style 8-inch gauge, 0.12 inches indicated by Davis TB. Fell just about noon and just after from Cb overhang from Catalina MTNS.
8/1/2017 7:00 AM T M M M M A few drops before ob time from a mid-level stratiform cloud.
8/2/2017 7:00 AM 0.04 M M M M 0.04 also in NWS gauge, 0.02 inches indicated by Davis TB. Fell from upper portions of Cb centered on MTNS.
8/3/2017 7:00 AM T M M M M Sprinkles from mid-level Cb overhang.
8/4/2017 7:00 AM T M M M M Very brief spkl after 12 noon.
8/5/2017 7:00 AM 0.00 0.0 M M M
8/6/2017 7:00 AM 0.00 0.0 M M M
8/7/2017 7:00 AM 0.00 0.0 M M M
8/8/2017 7:00 AM 0.00 0.0 M M M
8/9/2017 7:00 AM 0.00 0.0 M M M
8/10/2017 7:00 AM 0.14 M M M M CoCo gauge, 0.12 NWS 8-inch gauge, 0.11 indicated by Davis TB. RW- over about half an hour, some thunder in the distance. 0.01 inches at dawn from weak TSTM that passed around this site.
8/11/2017 7:00 AM 0.04 M M M M 0.04 in CoCo gauge, 0.04 in NWS 8-inch gauge, 0.03 indicated by Davis TB. Fell in the evening after dark as R- fm stratiform regions of Cbs.
8/12/2017 7:00 AM 0.00 0.0 M M M
8/13/2017 7:00 AM 0.78 M M M M 0.78 in NWS gauge, 0.76 inches in CoCo gauge, likely wind lowered catch, 0nly 0.61 inches indicated by Davis TB. Intense rain tapering to R-, with gusts to 35-45 mph with FQT LTG, fell between 2 AM and 4:30 AM.
8/14/2017 7:00 AM 0.00 0.0 M M M
8/15/2017 7:00 AM 0.00 0.0 M M M
8/16/2017 7:00 AM T M M M M Momentary sparse small drops at 2:20 PM from a nearly dead cell that developed to the SW. If not outside, would never had known!
8/17/2017 7:00 AM 0.00 0.0 M M M
8/18/2017 7:00 AM 0.00 0.0 M M M
8/19/2017 7:00 AM 0.00 0.0 M M M
8/20/2017 7:00 AM 0.00 0.0 M M M
8/21/2017 7:00 AM 0.00 0.0 M M M
8/22/2017 7:00 AM 0.00 0.0 M M M
8/23/2017 7:00 AM 0.00 0.0 M M M
8/24/2017 7:00 AM 0.10 M M M M 0,10 inches, CoCo gauge, 0.10 inches, NWS type gauge, 0.07 inches indicated by Davis TB. Fell from ni-based stratiform shield from Cbs.
8/25/2017 7:00 AM 0.00 0.0 M M M
8/26/2017 7:00 AM 0.00 0.0 M M M
8/27/2017 7:00 AM 0.00 0.0 M M M
8/28/2017 7:00 AM T M M M M Around 10 min RW-- began at 7:23 PM. Fell from remains of weak CB.
8/29/2017 7:00 AM 0.00 0.0 M M M Echo overhead at 7:30 PM from weak Cb remnant, but no drops reached the ground!
8/30/2017 7:00 AM 0.00 0.0 M M M
8/31/2017 7:00 AM 0.00 0.0 M M M
9/1/2017 7:00 AM 0.00 0.0 M M M
9/2/2017 7:00 AM 0.00 0.0 M M M
9/3/2017 7:00 AM 0.00 0.0 M M M
9/4/2017 7:00 AM 0.00 0.0 M M M
9/5/2017 7:00 AM 0.04 M M M M 0.04 in CoCo gauge, 0.04 in NWS gauge, 0.03 inches indicated by Davis TB. Late AFTN TSTM rumbled in from E, pretty much dissipating before arrival. Winds 25-35 mph from NE.
9/6/2017 7:00 AM 0.00 0.0 M M M
9/7/2017 7:00 AM 0.00 0.0 M M M
9/8/2017 7:00 AM T M M M M Small cell TSTM developed nearly overhead-N, moved NW. Smoky days continue.
9/9/2017 7:00 AM 0.65 M M M M 0.60 NWS gauge (?), 0.56 inches indicated by Davis TB. Little thunder in AFTN TRW to TRW-, followed by periods of R- after 11 PM AST, ending at about 4 AM.
9/10/2017 7:00 AM 0.00 0.0 M M M
9/11/2017 7:00 AM 0.00 0.0 M M M
9/12/2017 7:00 AM 0.00 0.0 M M M
9/13/2017 7:00 AM 0.00 0.0 M M M
9/14/2017 7:00 AM T M M M M A few drops from DSPTG Cb after 7:30 PM.
9/15/2017 7:00 AM T M M M M Spinkles at 3:58 PM, and again between 5:11 and 5:22 PM. The former lasted a few seconds, and if I had not been outside, would NEVER have noticed. The second consisted of large scattered drops, likely melted graupel.
9/16/2017 7:00 AM T M M M M Again an extremely brief couple of drops in the afternoon, cell to N
9/17/2017 7:00 AM 0.00 0.0 M M M
9/18/2017 7:00 AM 0.00 0.0 M M M
9/19/2017 7:00 AM 0.00 0.0 M M M
9/20/2017 7:00 AM 0.00 0.0 M M M
9/21/2017 7:00 AM 0.00 0.0 M M M
9/22/2017 7:00 AM 0.00 0.0 M M M
9/23/2017 7:00 AM 0.00 0.0 M M M
9/24/2017 7:00 AM 0.00 0.0 M M M
9/25/2017 7:00 AM 0.00 0.0 M M M
9/26/2017 7:00 AM 0.00 0.0 M M M
9/27/2017 7:00 AM 0.00 0.0 M M M
9/28/2017 7:00 AM 0.00 0.0 M M M
9/29/2017 7:00 AM 0.00 0.0 M M M
9/30/2017 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