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 19 1.04 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 19 0.81 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 19 0.64 0.30 27 0.30 27 0.00 0 0 2 3 3.2 1 6
Jan 20 0.50 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 20 0.55 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 20 1.62 1.76 5 1.76 5 0.00 0 0 3 1 5.5 1 2
April 20 1.97 2.57 15 2.57 15 0.00 0 0 5 1 30.4 5 6
May 20 2.27 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 20 1.85 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 20 1.48 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 20 1.50 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 20 1.52 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 15.75" 4.63" 47 days 4.63" 47 0.00" 0 days 0 10 days 5 days 39.1" 7 days 14 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
11/22/2019
11/23/2019
11/24/2019
11/25/2019
11/26/2019
11/27/2019
11/28/2019
11/29/2019
11/30/2019
12/1/2019 0.00
12/2/2019 0.00
12/3/2019 0.00
12/4/2019 0.00
12/5/2019 0.00
12/6/2019 0.15
12/7/2019 0.00
12/8/2019
12/9/2019 T
12/10/2019 0.00
12/11/2019 0.00
12/12/2019 0.00
12/13/2019 0.00
12/14/2019 0.00
12/15/2019 T
12/16/2019 0.00
12/17/2019 0.00
12/18/2019 0.00
12/19/2019 0.00
12/20/2019 0.00
12/21/2019 0.00
12/22/2019 0.00
12/23/2019 0.00
12/24/2019 0.00
12/25/2019 0.00
12/26/2019 T
12/27/2019 0.00
12/28/2019 0.15
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
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
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
3/12/2020
3/13/2020
3/14/2020
3/15/2020
3/16/2020
3/17/2020 0.02
3/18/2020 0.00
3/19/2020 0.51
3/20/2020 1.23
3/21/2020 T
3/22/2020
3/23/2020
3/24/2020
3/25/2020
3/26/2020
3/27/2020
3/28/2020
3/29/2020
3/30/2020
3/31/2020
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.00
4/2/2020
4/3/2020
4/4/2020 0.00
4/5/2020 0.00
4/6/2020 0.00
4/7/2020 0.00
4/8/2020 0.00
4/9/2020 0.00
4/10/2020 0.00
4/11/2020 T
4/12/2020 0.46
4/13/2020 0.37
4/14/2020 0.06
4/15/2020 0.00
4/16/2020 1.29
4/17/2020 0.39
4/18/2020
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
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
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
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
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
8/13/2020
8/14/2020
8/15/2020
8/16/2020
8/17/2020
8/18/2020
8/19/2020
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
12/1/2019 7:00 AM 0.00 0.0 M M M
12/2/2019 7:00 AM 0.00 0.0 M M M
12/3/2019 7:00 AM 0.00 0.0 M M M
12/4/2019 7:00 AM 0.00 0.0 M M M
12/5/2019 7:00 AM 0.00 0.0 M M M
12/6/2019 9:00 AM 0.15 T M 4.5 M Light rain am, light Rain and snow afternoon.
12/7/2019 7:00 AM 0.00 0.0 M M M
12/9/2019 9:00 AM T T M 3.0 M Light snow shower early am.
12/10/2019 7:00 AM 0.00 0.0 M M M
12/11/2019 7:00 AM 0.00 0.0 M M M
12/12/2019 7:00 AM 0.00 0.0 M M M
12/13/2019 7:00 AM 0.00 0.0 M M M
12/14/2019 7:00 AM 0.00 0.0 M M M
12/15/2019 9:00 AM T T M 2.0 M Light snow shower afternoon.
12/16/2019 7:00 AM 0.00 0.0 M M M
12/17/2019 7:00 AM 0.00 0.0 M M M
12/18/2019 7:00 AM 0.00 0.0 M M M
12/19/2019 7:00 AM 0.00 0.0 M M M
12/20/2019 7:00 AM 0.00 0.0 M M M
12/21/2019 7:00 AM 0.00 0.0 M M M
12/22/2019 7:00 AM 0.00 0.0 M M M
12/23/2019 7:00 AM 0.00 0.0 M M M
12/24/2019 7:00 AM 0.00 0.0 M M M
12/25/2019 7:00 AM 0.00 0.0 M M M
12/26/2019 9:00 AM T T M 0.5 M Light rain shower afternoon, light snow showers am.
12/27/2019 9:00 AM 0.00 0.0 M 0.5 M
12/28/2019 9:00 AM 0.15 3.2 M 3.0 M Light snow overnight
3/17/2020 9:00 AM 0.02 0.0 M 0.0 M Light rain showers overnight.
3/18/2020 7:00 AM 0.00 0.0 M 0.0 M
3/19/2020 9:00 AM 0.51 T M 0.0 M Rain overnight, just changed to snow at ob time.
3/20/2020 9:00 AM 1.23 5.5 M 5.0 M Light to moderate snow all day. 1.19"/5.2" new at 10 pm, 0.04:/0.3" new at 9 am.
3/21/2020 9:00 AM T T M 4.5 M Light snow showers yesterday morning and afternoon.
4/1/2020 7:00 AM 0.00 0.0 M M M
4/4/2020 7:00 AM 0.00 0.0 M M M
4/5/2020 7:00 AM 0.00 0.0 M M M
4/6/2020 7:00 AM 0.00 0.0 M M M
4/7/2020 7:00 AM 0.00 0.0 M M M
4/8/2020 7:00 AM 0.00 0.0 M M M
4/9/2020 7:00 AM 0.00 0.0 M M M
4/10/2020 7:00 AM 0.00 0.0 M M M
4/11/2020 9:00 AM T 0.0 M 0.0 M Light rain shower afternoon.
4/12/2020 9:00 AM 0.46 6.2 M 5.5 M Heavy snow overnight. Light to moderate snow at ob time.
4/13/2020 9:00 AM 0.37 7.1 M 8.5 M Light to moderate snow all day. Measurements difficult due to melting.
4/14/2020 9:00 AM 0.06 1.0 M 6.0 M Light snow all day. Ended before 10 pm. Snow amount estimate due to melting during the day.
4/15/2020 9:00 AM 0.00 0.0 M 1.0 M
4/16/2020 9:00 AM 1.29 12.8 M 12.0 M Rain and show yesterday evening with 0.16"/1.0" new at 10 pm. Snow overnight with 1.13"/11.8" new at 9 am.
4/17/2020 9:00 AM 0.39 3.3 M 14.0 M Light to moderate snow all day. Ended before 10 pm.



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
5/15/2020 6:01 PM No hail pad. Hail did not cover ground. 0.22" of rain in 6 min. 1/2" Grape 1/2" Grape 1/4" Pea Size Hard|White Ice 6 1min minor leaf damage Continuous True Same time as rain Before smaller hail 10-20