CoCoRaHS Station WYS : CO-BO-451

2018 CoCoRaHS Water Year Summary for Station CO-BO-451 Report generated on October 3, 2019

Station Overview		Station Location
Station Number	CO-BO-451	Latitude	39.99114
Station Name	Boulder 2.5 S	Longitude	-105.25185
County	Boulder	Elevation (ft)	5389

Water Year Overview
Days in Water Year
Daily Prcp Observations
Multiday Prcp Observations
Hail Observations
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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	1.38	2.52	30	2.52	30	0.00	0	0	9	1	1.5	1	0
Nov 17	1.05	0.61	24	0.61	24	0.00	0	0	5	1	4.1	2	0
Dec 17	0.81	0.46	15	0.46	15	0.00	0	0	2	3	6.0	3	2
Jan 18	0.65	0.80	18	0.80	18	0.00	0	0	5	0	7.1	3	3
Feb 18	0.65	0.86	13	0.28	11	0.58	2	1	3	3	5.0	3	4
March 18	1.88	2.20	8	2.20	8	0.00	0	0	5	0	5.0	3	3
April 18	2.36	0.90	4	0.90	4	0.00	0	0	3	0	2.7	2	2
May 18	2.70	2.61	6	2.61	6	0.00	0	0	5	1	0.0	0	0
June 18	2.22	0.00	0	0.00	0	0.00	0	0	0	0	0.0	0	0
July 18	1.66	0.81	4	0.81	4	0.00	0	0	4	0	0.0	0	0
Aug 18	1.82	0.20	1	0.20	1	0.00	0	0	1	0	0.0	0	0
Sept 18	1.61	0.00	0	0.00	0	0.00	0	0	0	0	0.0	0	0
Water Year Totals:	18.79"	11.97"	123 days	11.39"	121	0.58"	2 days	1	42 days	9 days	31.4"	17 days	14 days

Water Year Overview
Days in Water Year
Daily Prcp Observations
Multiday Prcp Observations
Hail Observations
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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	0.07
10/2/2017	0.71
10/3/2017	0.47
10/4/2017	0.01
10/5/2017	0.00
10/6/2017	0.00
10/7/2017	0.00
10/8/2017	0.00
10/9/2017	0.78
10/10/2017	0.17
10/11/2017	T
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	0.00
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
10/27/2017	0.14
10/28/2017	0.00
10/29/2017	0.00
10/30/2017	0.11
10/31/2017	0.06
11/1/2017	0.00
11/2/2017	0.00
11/3/2017	0.00
11/4/2017	0.00
11/5/2017	0.03
11/6/2017	0.00
11/7/2017	0.37
11/8/2017	0.11
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	0.07
11/19/2017	0.00
11/20/2017	0.00
11/21/2017	0.03
11/22/2017	0.00
11/23/2017	0.00
11/24/2017
11/25/2017
11/26/2017
11/27/2017
11/28/2017	T
11/29/2017
11/30/2017
12/1/2017	0.00
12/2/2017
12/3/2017
12/4/2017
12/5/2017
12/6/2017	0.00
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017	M
12/15/2017	0.00
12/16/2017	0.00
12/17/2017	0.00
12/18/2017	0.00
12/19/2017	0.00
12/20/2017	0.00
12/21/2017
12/22/2017	0.19
12/23/2017	0.00
12/24/2017	0.27
12/25/2017	0.00
12/26/2017	T
12/27/2017
12/28/2017
12/29/2017
12/30/2017	T
12/31/2017	T

Day of Year	Daily Prcp	Multiday Prcp
1/1/2018	0.00
1/2/2018	0.00
1/3/2018
1/4/2018	0.00
1/5/2018	0.00
1/6/2018	0.00
1/7/2018
1/8/2018	0.00
1/9/2018	0.00
1/10/2018	0.00
1/11/2018	0.01
1/12/2018	0.00
1/13/2018	0.00
1/14/2018
1/15/2018	0.04
1/16/2018	0.05
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018	0.45
1/22/2018	0.25
1/23/2018	0.00
1/24/2018
1/25/2018	0.00
1/26/2018
1/27/2018	0.00
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018	0.01
2/2/2018	T
2/3/2018
2/4/2018
2/5/2018	T
2/6/2018	0.00
2/7/2018
2/8/2018	0.00
2/9/2018	0.00
2/10/2018	0.13
2/11/2018	0.14
2/12/2018
2/13/2018
2/14/2018
2/15/2018	0.00
2/16/2018
2/17/2018
2/18/2018
2/19/2018		**
2/20/2018	M	0.58
2/21/2018	0.00
2/22/2018
2/23/2018	T
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018
3/16/2018	0.00
3/17/2018
3/18/2018	0.00
3/19/2018	0.65
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018	0.10
3/27/2018	0.80
3/28/2018
3/29/2018	0.54
3/30/2018	0.11
3/31/2018	0.00

Day of Year	Daily Prcp	Multiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018	0.36
4/8/2018
4/9/2018	0.06
4/10/2018
4/11/2018
4/12/2018
4/13/2018	0.00
4/14/2018
4/15/2018
4/16/2018
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018	0.48
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018	T
5/2/2018
5/3/2018	1.25
5/4/2018	0.44
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018
5/13/2018
5/14/2018	0.68
5/15/2018
5/16/2018
5/17/2018
5/18/2018
5/19/2018
5/20/2018
5/21/2018
5/22/2018
5/23/2018
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018	0.06
5/30/2018
5/31/2018	0.18
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018
6/17/2018
6/18/2018
6/19/2018
6/20/2018
6/21/2018
6/22/2018
6/23/2018
6/24/2018
6/25/2018
6/26/2018
6/27/2018
6/28/2018
6/29/2018
6/30/2018

Day of Year	Daily Prcp	Multiday Prcp
7/1/2018
7/2/2018
7/3/2018
7/4/2018
7/5/2018
7/6/2018
7/7/2018
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018
7/14/2018
7/15/2018
7/16/2018
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018
7/24/2018	0.34
7/25/2018
7/26/2018	0.14
7/27/2018	0.28
7/28/2018	0.05
7/29/2018
7/30/2018
7/31/2018
8/1/2018
8/2/2018
8/3/2018
8/4/2018
8/5/2018
8/6/2018
8/7/2018
8/8/2018
8/9/2018
8/10/2018
8/11/2018
8/12/2018
8/13/2018
8/14/2018
8/15/2018
8/16/2018
8/17/2018
8/18/2018
8/19/2018	0.20
8/20/2018
8/21/2018
8/22/2018
8/23/2018
8/24/2018
8/25/2018
8/26/2018
8/27/2018
8/28/2018
8/29/2018
8/30/2018
8/31/2018
9/1/2018
9/2/2018
9/3/2018
9/4/2018
9/5/2018
9/6/2018
9/7/2018
9/8/2018
9/9/2018
9/10/2018
9/11/2018
9/12/2018
9/13/2018
9/14/2018
9/15/2018
9/16/2018
9/17/2018
9/18/2018
9/19/2018
9/20/2018
9/21/2018
9/22/2018
9/23/2018
9/24/2018
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018

Water Year Overview
Days in Water Year
Daily Prcp Observations
Multiday Prcp Observations
Hail Observations
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Observation Date	Observation Time	Precipitation	Snowfall	Snowfall SWE	Snow Depth	Snow SWE	Notes
10/1/2017	8:00 AM	0.07	M	M	M	M
10/2/2017	8:30 AM	0.71	M	M	M	M	raining at the time of measurement
10/3/2017	7:30 AM	0.47	M	M	M	M
10/4/2017	8:00 AM	0.01	M	M	M	M
10/5/2017	8:00 AM	0.00	0.0	M	M	M	dry
10/6/2017	8:00 AM	0.00	0.0	M	M	M	none
10/7/2017	8:00 AM	0.00	0.0	M	M	M
10/8/2017	8:00 AM	0.00	0.0	M	M	M
10/9/2017	8:00 AM	0.78	M	M	M	M	rain started 8:30pm. turned to snow in night. total of 3.75 inches at 8am
10/10/2017	8:00 AM	0.17	1.5	M	M	M
10/11/2017	8:00 AM	T	M	M	M	M
10/12/2017	8:00 AM	0.00	0.0	M	M	M	no rain
10/13/2017	7:15 AM	0.00	0.0	M	M	M	dry
10/14/2017	8:00 AM	0.00	0.0	M	M	M	dry
10/15/2017	8:00 AM	0.00	0.0	M	M	M
10/16/2017	8:00 AM	0.00	0.0	M	M	M	dry
10/17/2017	8:00 AM	0.00	0.0	M	M	M
10/18/2017	8:00 AM	0.00	0.0	M	M	M
10/19/2017	8:00 AM	0.00	0.0	M	M	M
10/20/2017	7:30 AM	0.00	0.0	M	M	M
10/21/2017	8:00 AM	0.00	0.0	M	M	M
10/22/2017	8:00 AM	0.00	0.0	M	M	M
10/23/2017	8:00 AM	0.00	0.0	M	M	M
10/24/2017	8:00 AM	0.00	0.0	M	M	M
10/25/2017	8:00 AM	0.00	0.0	M	M	M
10/27/2017	8:00 AM	0.14	M	M	M	M	.875 snow on ground
10/28/2017	8:00 AM	0.00	0.0	M	M	M
10/29/2017	8:00 AM	0.00	0.0	M	M	M
10/30/2017	8:00 AM	0.11	M	M	M	M	turned to rain/snow after 8am measurement
10/31/2017	8:00 AM	0.06	M	M	M	M
11/1/2017	8:00 AM	0.00	0.0	M	M	M
11/2/2017	8:00 AM	0.00	0.0	M	M	M
11/3/2017	8:00 AM	0.00	0.0	M	M	M
11/4/2017	8:00 AM	0.00	0.0	M	M	M
11/5/2017	7:15 AM	0.03	M	M	M	M
11/6/2017	8:00 AM	0.00	0.0	M	M	M
11/7/2017	7:15 AM	0.37	3.1	M	M	M	rain to snow
11/8/2017	8:00 AM	0.11	1.0	M	M	M
11/9/2017	8:00 AM	0.00	0.0	M	M	M
11/10/2017	8:00 AM	0.00	0.0	M	M	M
11/11/2017	8:00 AM	0.00	0.0	M	M	M
11/12/2017	8:00 AM	0.00	0.0	M	M	M
11/13/2017	8:00 AM	0.00	0.0	M	M	M
11/14/2017	8:00 AM	0.00	0.0	M	M	M
11/15/2017	8:00 AM	0.00	0.0	M	M	M
11/16/2017	8:00 AM	0.00	0.0	M	M	M
11/17/2017	8:00 AM	0.00	0.0	M	M	M
11/18/2017	7:30 AM	0.07	M	M	M	M	rained 2 to 3 times in evening. Started at 4:30pm. Last rain ended about 7pm. Moisture was in frozen state in bottom of big tube.
11/19/2017	8:00 AM	0.00	0.0	M	M	M
11/20/2017	8:00 AM	0.00	0.0	M	M	M
11/21/2017	7:30 AM	0.03	0.0	M	M	M	light drizzle, no T yet. By 10:30 measured .03
11/22/2017	8:00 AM	0.00	0.0	M	M	M
11/23/2017	8:00 AM	0.00	0.0	M	M	M
11/28/2017	7:30 AM	T	M	M	M	M	no snow as expected, just dew or mist
12/1/2017	6:40 AM	0.00	0.0	M	M	M
12/6/2017	7:45 AM	0.00	0.0	M	M	M
12/14/2017	7:55 AM	M	M	0.17	M	M	{EDIT: Observer reported 1.75 of new precip. QPE data and surrounding reports of 0.10 to 0.19 indicate this could be a typo. Changed report of 1.75 to NA until observer can be contacted to verify. Submission Time Before EDIT: 12/14/2017 10:46 AM CoCoSTAFF DNT}
12/15/2017	9:00 AM	0.00	0.0	M	M	M
12/16/2017	8:00 AM	0.00	0.0	M	M	M
12/17/2017	8:00 AM	0.00	0.0	M	M	M
12/18/2017	9:00 AM	0.00	0.0	M	M	M
12/19/2017	9:00 AM	0.00	0.0	M	M	M
12/20/2017	9:00 AM	0.00	0.0	M	M	M
12/22/2017	7:45 AM	0.19	2.3	0.19	2.0	0.19
12/23/2017	8:00 AM	0.00	0.0	M	M	M
12/24/2017	8:15 AM	0.27	3.5	0.27	M	M	started to snow about 5:15 pm on 12/23/17
12/25/2017	9:00 AM	0.00	0.0	M	M	M
12/26/2017	8:00 AM	T	0.2	T	3.0	M	light, fluffy snow
12/30/2017	9:15 AM	T	T	T	T	T	light fluff - active
12/31/2017	8:00 AM	T	T	T	T	T	light fluff
1/1/2018	6:50 AM	0.00	0.0	M	M	M
1/2/2018	9:00 AM	0.00	0.0	M	M	M
1/4/2018	7:15 AM	0.00	0.0	M	M	M
1/5/2018	9:00 AM	0.00	0.0	M	M	M
1/6/2018	7:30 AM	0.00	0.0	M	M	M
1/8/2018	9:00 AM	0.00	0.0	M	M	M
1/9/2018	8:00 AM	0.00	0.0	M	M	M
1/10/2018	9:00 AM	0.00	0.0	M	M	M
1/11/2018	7:00 AM	0.01	M	M	M	M	rain only
1/12/2018	7:00 AM	0.00	0.0	M	M	M
1/13/2018	7:30 AM	0.00	0.0	M	M	M
1/15/2018	8:00 AM	0.04	T	M	T	M	snowing fine gropple at time of measurement
1/16/2018	8:00 AM	0.05	0.7	M	0.5	M
1/21/2018	7:45 AM	0.45	4.0	0.45	4.0	M	rain started about 10pm. turned to snow later
1/22/2018	8:00 AM	0.25	2.4	0.25	5.5	0.64
1/23/2018	7:45 AM	0.00	0.0	M	M	M
1/25/2018	8:00 AM	0.00	0.0	M	M	M
1/27/2018	8:00 AM	0.00	0.0	M	M	M
2/1/2018	8:00 AM	0.01	0.3	0.01	0.3	M	light pellet snow at measure time
2/2/2018	7:30 AM	T	T	T	T	M
2/5/2018	8:00 AM	T	T	T	M	M	warm wind last night melted all
2/6/2018	8:30 AM	0.00	0.0	M	M	M
2/8/2018	8:00 AM	0.00	0.0	M	M	M
2/9/2018	7:30 AM	0.00	0.0	M	M	M	heavy fog and humid
2/10/2018	6:00 AM	0.13	1.6	0.13	1.6	0.13
2/11/2018	8:00 AM	0.14	3.1	0.14	4.6	0.27	started 6:55am sat. ended around 3pm. started again sat night and ended by morning
2/15/2018	8:00 AM	0.00	0.0	M	M	M
2/20/2018	8:30 AM	M	0.0	M	6.9	0.58	gauge not measured 2/19. 2/20 is results of 2 days {EDIT: Zero precip set to NA, multi-day report submitted. OST 2/20/2018 9:40 AM -CCR Staff SDH-
2/21/2018	8:00 AM	0.00	0.0	M	M	M
2/23/2018	6:45 AM	T	T	T	M	M
3/16/2018	8:00 AM	0.00	0.0	M	M	M	Rain only.
3/18/2018	7:00 AM	0.00	0.0	M	M	M
3/19/2018	7:00 AM	0.65	0.8	0.65	0.5	0.65	mixed hail, rain, and snow thru evening
3/26/2018	7:00 AM	0.10	M	M	M	M
3/27/2018	7:15 AM	0.80	3.0	0.80	3.0	0.80	rain to snow
3/29/2018	8:15 AM	0.54	1.2	0.54	1.2	0.54	rain to snow
3/30/2018	7:30 AM	0.11	T	T	T	T
3/31/2018	6:45 AM	0.00	0.0	M	M	M
4/7/2018	7:30 AM	0.36	2.5	0.36	2.5	0.36
4/9/2018	7:30 AM	0.06	0.2	0.06	0.2	0.06	rain/snow
4/13/2018	8:00 AM	0.00	0.0	M	M	M
4/25/2018	6:45 AM	0.48	0.0	M	0.0	M	rain/snow
5/1/2018	7:32 AM	T	M	M	M	M
5/3/2018	8:00 AM	1.25	M	M	M	M	heavy rain through night
5/4/2018	8:30 AM	0.44	M	M	M	M
5/14/2018	8:00 AM	0.68	M	M	M	M
5/29/2018	7:30 AM	0.06	M	M	M	M
5/31/2018	6:00 AM	0.18	M	M	M	M
7/24/2018	7:00 AM	0.34	M	M	M	M
7/26/2018	7:00 AM	0.14	M	M	M	M	Rain on and off thru day.
7/27/2018	6:30 AM	0.28	M	M	M	M
7/28/2018	6:30 AM	0.05	M	M	M	M
8/19/2018	7:00 AM	0.20	M	M	M	M	hard rain started 8pm and another started at 10pm

Water Year Overview
Days in Water Year
Daily Prcp Observations
Multiday Prcp Observations
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Start Date	End Date & Time	Duration in Days	Precipitation	Snow Depth	Snow Depth SWE	Notes
2/19/2018	2/20/2018 8:00 AM	2	0.58	6.9	M	gauge not measured 2/19. 2/20 is results of 2 days

Water Year Overview
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Daily Prcp Observations
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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