Station Overview Station Location
Station Number CO-BO-76 Latitude 40.0786
Station Name Niwot 1.8 SSW Longitude -105.1808
County Boulder Elevation (ft) 5190



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 15 1.04 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 15 0.81 0.96 2 0.96 2 0.00 0 0 2 0 3.9 1 1
Dec 15 0.64 0.46 1 0.46 1 0.00 0 0 1 0 8.4 1 1
Jan 16 0.50 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 16 0.55 1.05 2 1.05 2 0.00 0 0 2 0 16.3 2 2
March 16 1.62 3.81 5 3.81 5 0.00 0 0 4 0 40.3 4 5
April 16 1.97 2.19 2 2.19 2 0.00 0 0 2 0 11.8 1 1
May 16 2.27 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 16 1.85 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 16 1.48 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 16 1.50 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 16 1.52 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 15.75" 8.47" 12 days 8.47" 12 0.00" 0 days 0 11 days 0 days 80.7" 9 days 10 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
10/1/2015
10/2/2015
10/3/2015
10/4/2015
10/5/2015
10/6/2015
10/7/2015
10/8/2015
10/9/2015
10/10/2015
10/11/2015
10/12/2015
10/13/2015
10/14/2015
10/15/2015
10/16/2015
10/17/2015
10/18/2015
10/19/2015
10/20/2015
10/21/2015
10/22/2015
10/23/2015
10/24/2015
10/25/2015
10/26/2015
10/27/2015
10/28/2015
10/29/2015
10/30/2015
10/31/2015
11/1/2015
11/2/2015
11/3/2015
11/4/2015
11/5/2015
11/6/2015
11/7/2015
11/8/2015
11/9/2015
11/10/2015
11/11/2015 0.67
11/12/2015
11/13/2015
11/14/2015
11/15/2015
11/16/2015
11/17/2015 0.29
11/18/2015
11/19/2015
11/20/2015
11/21/2015
11/22/2015
11/23/2015
11/24/2015
11/25/2015
11/26/2015
11/27/2015
11/28/2015
11/29/2015
11/30/2015
12/1/2015
12/2/2015
12/3/2015
12/4/2015
12/5/2015
12/6/2015
12/7/2015
12/8/2015
12/9/2015
12/10/2015
12/11/2015
12/12/2015
12/13/2015
12/14/2015
12/15/2015 0.46
12/16/2015
12/17/2015
12/18/2015
12/19/2015
12/20/2015
12/21/2015
12/22/2015
12/23/2015
12/24/2015
12/25/2015
12/26/2015
12/27/2015
12/28/2015
12/29/2015
12/30/2015
12/31/2015
Day of YearDaily PrcpMultiday Prcp
1/1/2016
1/2/2016
1/3/2016
1/4/2016
1/5/2016
1/6/2016
1/7/2016
1/8/2016
1/9/2016
1/10/2016
1/11/2016
1/12/2016
1/13/2016
1/14/2016
1/15/2016
1/16/2016
1/17/2016
1/18/2016
1/19/2016
1/20/2016
1/21/2016
1/22/2016
1/23/2016
1/24/2016
1/25/2016
1/26/2016
1/27/2016
1/28/2016
1/29/2016
1/30/2016
1/31/2016
2/1/2016 0.22
2/2/2016 0.83
2/3/2016
2/4/2016
2/5/2016
2/6/2016
2/7/2016
2/8/2016
2/9/2016
2/10/2016
2/11/2016
2/12/2016
2/13/2016
2/14/2016
2/15/2016
2/16/2016
2/17/2016
2/18/2016
2/19/2016
2/20/2016
2/21/2016
2/22/2016
2/23/2016
2/24/2016
2/25/2016
2/26/2016
2/27/2016
2/28/2016
2/29/2016
3/1/2016
3/2/2016
3/3/2016
3/4/2016
3/5/2016
3/6/2016
3/7/2016
3/8/2016
3/9/2016
3/10/2016
3/11/2016
3/12/2016
3/13/2016
3/14/2016
3/15/2016
3/16/2016
3/17/2016
3/18/2016 0.95
3/19/2016
3/20/2016
3/21/2016
3/22/2016
3/23/2016 1.64
3/24/2016 0.84
3/25/2016 0.00
3/26/2016 0.38
3/27/2016
3/28/2016
3/29/2016
3/30/2016
3/31/2016
Day of YearDaily PrcpMultiday Prcp
4/1/2016
4/2/2016
4/3/2016
4/4/2016
4/5/2016
4/6/2016
4/7/2016
4/8/2016
4/9/2016
4/10/2016
4/11/2016
4/12/2016
4/13/2016
4/14/2016
4/15/2016
4/16/2016 0.65
4/17/2016 1.54
4/18/2016
4/19/2016
4/20/2016
4/21/2016
4/22/2016
4/23/2016
4/24/2016
4/25/2016
4/26/2016
4/27/2016
4/28/2016
4/29/2016
4/30/2016
5/1/2016
5/2/2016
5/3/2016
5/4/2016
5/5/2016
5/6/2016
5/7/2016
5/8/2016
5/9/2016
5/10/2016
5/11/2016
5/12/2016
5/13/2016
5/14/2016
5/15/2016
5/16/2016
5/17/2016
5/18/2016
5/19/2016
5/20/2016
5/21/2016
5/22/2016
5/23/2016
5/24/2016
5/25/2016
5/26/2016
5/27/2016
5/28/2016
5/29/2016
5/30/2016
5/31/2016
6/1/2016
6/2/2016
6/3/2016
6/4/2016
6/5/2016
6/6/2016
6/7/2016
6/8/2016
6/9/2016
6/10/2016
6/11/2016
6/12/2016
6/13/2016
6/14/2016
6/15/2016
6/16/2016
6/17/2016
6/18/2016
6/19/2016
6/20/2016
6/21/2016
6/22/2016
6/23/2016
6/24/2016
6/25/2016
6/26/2016
6/27/2016
6/28/2016
6/29/2016
6/30/2016
Day of YearDaily PrcpMultiday Prcp
7/1/2016
7/2/2016
7/3/2016
7/4/2016
7/5/2016
7/6/2016
7/7/2016
7/8/2016
7/9/2016
7/10/2016
7/11/2016
7/12/2016
7/13/2016
7/14/2016
7/15/2016
7/16/2016
7/17/2016
7/18/2016
7/19/2016
7/20/2016
7/21/2016
7/22/2016
7/23/2016
7/24/2016
7/25/2016
7/26/2016
7/27/2016
7/28/2016
7/29/2016
7/30/2016
7/31/2016
8/1/2016
8/2/2016
8/3/2016
8/4/2016
8/5/2016
8/6/2016
8/7/2016
8/8/2016
8/9/2016
8/10/2016
8/11/2016
8/12/2016
8/13/2016
8/14/2016
8/15/2016
8/16/2016
8/17/2016
8/18/2016
8/19/2016
8/20/2016
8/21/2016
8/22/2016
8/23/2016
8/24/2016
8/25/2016
8/26/2016
8/27/2016
8/28/2016
8/29/2016
8/30/2016
8/31/2016
9/1/2016
9/2/2016
9/3/2016
9/4/2016
9/5/2016
9/6/2016
9/7/2016
9/8/2016
9/9/2016
9/10/2016
9/11/2016
9/12/2016
9/13/2016
9/14/2016
9/15/2016
9/16/2016
9/17/2016
9/18/2016
9/19/2016
9/20/2016
9/21/2016
9/22/2016
9/23/2016
9/24/2016
9/25/2016
9/26/2016
9/27/2016
9/28/2016
9/29/2016
9/30/2016



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
11/11/2015 8:00 AM 0.67 3.9 M 3.5 M
11/17/2015 8:30 AM 0.29 T M T M Light rain yesterday evening with 0.23" new at 10 pm. Light rain and light snow overnight with 0.06" new at 8:30 am.
12/15/2015 8:00 AM 0.46 8.4 M 9.0 M Snow began after 1am, light snow at ob time.
2/1/2016 8:30 AM 0.22 2.2 M 3.5 M Light snow yesterday afternoon and evening, with 1.3"/0.12" new at 10pm. Light snow overnight with 0.9"/0.10" new at 8:30am.
2/2/2016 7:00 AM 0.83 14.1 M 13.5 M Light snow yesterday morning and afternoon, with slow accumulation due to melting and settling. Moderate to heavy snow yesterday evening, with 10.3"/0.61" new at 10pm. Snow overnight with an additional 3.8"/0.22" at 7am.
3/18/2016 8:30 AM 0.95 11.3 M 8.5 M Light snow all day yesterday, with 1"+ accumulating then melting by mid afternoon. Started accumulating again late afternoon, with 5.2"/0.52" new at 11pm. Light snow overnight with 5.1"/0.43" new at 8:30am. Light snow continuing at ob time.
3/23/2016 8:30 AM 1.64 11.4 M 10.0 M Light rain began around midnight, turned to snow before 4am. Moderate snow at ob time. Estimate 0.20" of liquid was rain based on tipping-bucket rain gauge. Snow is very wet for around here.
3/24/2016 7:00 AM 0.84 11.8 M 16.5 M Heavy snow in the morning, with 5.8"/0.33" new between 8:30-10:30am, and another 5.0"/0.44" new between 10:30am-12:30pm. Light snow after noon with 1.0"/0.07" new at 10pm. Max snow on ground 21".
3/25/2016 7:00 AM 0.00 0.0 M 13.0 M
3/26/2016 7:30 AM 0.38 5.8 M 13.5 M Light rain and snow showers yesterday evening, with T/T new at 11:30pm. Light snow overnight with 5.8"/0.38" new at 7:30am. Light snow at ob time.
4/16/2016 8:30 AM 0.65 T M T M Light rain showers yesterday afternoon, light rain mixed with light snow overnight. Light snow at ob time.
4/17/2016 8:30 AM 1.54 11.8 M 9.0 M Light snow began around 8am yesterday, light snow all day. Accumulated to 1" or so then melted, this happened at least twice. Light to moderate snow after sunset with an estimated 5.5"/1.08" at 11:30pm. Light to moderate snow overnight with 6.3"/0.46" new at 9:30am. Light snow at ob time.



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
5/7/2016 1:25 PM 1/4" Pea Size Rice Rice Hard|White Ice 8 2min no damage Intermittent True After rain Same time as smaller hail
9/4/2016 4:00 PM No hail pad. Stones widely scattered on ground. 1/2" Grape 1/4" Pea Size 1/4" Pea Size Soft|White Ice 5 3min no damage Intermittent True After rain Same time as smaller hail 10-20