Station Overview Station Location
Station Number CO-BO-67 Latitude 39.999614
Station Name Boulder 4.7 E Longitude -105.179377
County Boulder Elevation (ft) 5325



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 14 1.31 1.15 31 1.15 31 0.00 0 0 4 2 0.0 0 0
Nov 14 1.00 0.66 30 0.66 30 0.00 0 0 7 0 7.2 5 12
Dec 14 0.70 1.04 31 1.04 31 0.00 0 0 7 1 14.3 6 9
Jan 15 0.57 0.24 31 0.24 31 0.00 0 0 6 3 3.1 4 19
Feb 15 0.54 3.54 28 3.54 28 0.00 0 0 11 0 48.8 10 18
March 15 1.80 0.37 31 0.37 31 0.00 0 0 6 5 5.8 3 11
April 15 2.13 3.81 30 3.81 30 0.00 0 0 11 4 7.9 3 2
May 15 2.38 7.68 31 6.22 26 1.46 5 2 22 1 4.0 1 1
June 15 1.84 2.63 25 2.63 25 0.00 0 0 11 4 0.0 0 0
July 15 1.68 0.71 22 0.71 22 0.00 0 0 8 5 0.0 0 0
Aug 15 1.64 0.31 17 0.31 17 0.00 0 0 4 2 0.0 0 0
Sept 15 1.40 0.17 25 0.17 25 0.00 0 0 5 3 0.0 0 0
Water Year Totals: 16.99" 22.31" 332 days 20.85" 327 1.46" 5 days 2 102 days 30 days 91.1" 32 days 72 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
10/1/2014 0.00
10/2/2014 0.20
10/3/2014 0.00
10/4/2014 0.00
10/5/2014 0.00
10/6/2014 0.00
10/7/2014 0.00
10/8/2014 0.00
10/9/2014 0.00
10/10/2014 0.88
10/11/2014 T
10/12/2014 T
10/13/2014 0.02
10/14/2014 0.00
10/15/2014 0.00
10/16/2014 0.00
10/17/2014 0.00
10/18/2014 0.00
10/19/2014 0.00
10/20/2014 0.00
10/21/2014 0.00
10/22/2014 0.05
10/23/2014 0.00
10/24/2014 0.00
10/25/2014 0.00
10/26/2014 0.00
10/27/2014 0.00
10/28/2014 0.00
10/29/2014 0.00
10/30/2014 0.00
10/31/2014 0.00
11/1/2014 0.00
11/2/2014 0.00
11/3/2014 0.10
11/4/2014 0.00
11/5/2014 0.00
11/6/2014 0.00
11/7/2014 0.00
11/8/2014 0.15
11/9/2014 0.00
11/10/2014 0.00
11/11/2014 0.07
11/12/2014 0.14
11/13/2014 0.11
11/14/2014 0.00
11/15/2014 0.00
11/16/2014 0.08
11/17/2014 0.00
11/18/2014 0.00
11/19/2014 0.00
11/20/2014 0.00
11/21/2014 0.00
11/22/2014 0.00
11/23/2014 0.00
11/24/2014 0.00
11/25/2014 0.00
11/26/2014 0.01
11/27/2014 0.00
11/28/2014 0.00
11/29/2014 0.00
11/30/2014 0.00
12/1/2014 0.00
12/2/2014 0.00
12/3/2014 0.00
12/4/2014 0.00
12/5/2014 0.00
12/6/2014 0.00
12/7/2014 0.00
12/8/2014 0.00
12/9/2014 0.00
12/10/2014 0.00
12/11/2014 0.00
12/12/2014 0.00
12/13/2014 0.00
12/14/2014 0.00
12/15/2014 0.19
12/16/2014 0.00
12/17/2014 0.00
12/18/2014 0.00
12/19/2014 0.00
12/20/2014 0.00
12/21/2014 0.00
12/22/2014 0.05
12/23/2014 0.04
12/24/2014 0.00
12/25/2014 0.00
12/26/2014 0.43
12/27/2014 0.09
12/28/2014 0.00
12/29/2014 T
12/30/2014 0.22
12/31/2014 0.02
Day of YearDaily PrcpMultiday Prcp
1/1/2015 0.00
1/2/2015 0.00
1/3/2015 0.00
1/4/2015 0.05
1/5/2015 0.00
1/6/2015 0.00
1/7/2015 T
1/8/2015 T
1/9/2015 0.06
1/10/2015 0.00
1/11/2015 0.00
1/12/2015 0.01
1/13/2015 0.01
1/14/2015 0.03
1/15/2015 0.00
1/16/2015 0.00
1/17/2015 0.00
1/18/2015 0.00
1/19/2015 0.00
1/20/2015 T
1/21/2015 0.00
1/22/2015 0.08
1/23/2015 0.00
1/24/2015 0.00
1/25/2015 0.00
1/26/2015 0.00
1/27/2015 0.00
1/28/2015 0.00
1/29/2015 0.00
1/30/2015 0.00
1/31/2015 0.00
2/1/2015 0.54
2/2/2015 0.00
2/3/2015 0.00
2/4/2015 0.17
2/5/2015 0.18
2/6/2015 0.00
2/7/2015 0.00
2/8/2015 0.00
2/9/2015 0.00
2/10/2015 0.00
2/11/2015 0.02
2/12/2015 0.00
2/13/2015 0.00
2/14/2015 0.00
2/15/2015 0.00
2/16/2015 0.63
2/17/2015 0.29
2/18/2015 0.00
2/19/2015 0.00
2/20/2015 0.00
2/21/2015 0.13
2/22/2015 0.65
2/23/2015 0.15
2/24/2015 0.00
2/25/2015 0.00
2/26/2015 0.65
2/27/2015 0.13
2/28/2015 0.00
3/1/2015 T
3/2/2015 T
3/3/2015 0.00
3/4/2015 0.10
3/5/2015 0.03
3/6/2015 0.00
3/7/2015 0.00
3/8/2015 0.00
3/9/2015 0.00
3/10/2015 0.00
3/11/2015 0.00
3/12/2015 0.00
3/13/2015 T
3/14/2015 T
3/15/2015 0.00
3/16/2015 0.00
3/17/2015 0.00
3/18/2015 0.00
3/19/2015 0.08
3/20/2015 0.01
3/21/2015 0.00
3/22/2015 0.00
3/23/2015 T
3/24/2015 0.00
3/25/2015 0.01
3/26/2015 0.14
3/27/2015 0.00
3/28/2015 0.00
3/29/2015 0.00
3/30/2015 0.00
3/31/2015 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2015 0.00
4/2/2015 0.01
4/3/2015 0.36
4/4/2015 T
4/5/2015 0.00
4/6/2015 0.00
4/7/2015 0.00
4/8/2015 0.00
4/9/2015 0.03
4/10/2015 0.00
4/11/2015 0.00
4/12/2015 0.00
4/13/2015 0.00
4/14/2015 0.00
4/15/2015 0.00
4/16/2015 0.01
4/17/2015 2.07
4/18/2015 0.39
4/19/2015 0.13
4/20/2015 T
4/21/2015 T
4/22/2015 0.01
4/23/2015 0.00
4/24/2015 T
4/25/2015 0.00
4/26/2015 0.02
4/27/2015 0.73
4/28/2015 0.05
4/29/2015 0.00
4/30/2015 0.00
5/1/2015 0.09
5/2/2015 0.11
5/3/2015 0.03
5/4/2015 **
5/5/2015 0.46
5/6/2015 0.20
5/7/2015 0.04
5/8/2015 0.67
5/9/2015 1.62
5/10/2015 1.27
5/11/2015 T
5/12/2015 0.00
5/13/2015 0.01
5/14/2015 0.04
5/15/2015 0.01
5/16/2015 0.19
5/17/2015 0.01
5/18/2015 0.04
5/19/2015 0.82
5/20/2015 0.56
5/21/2015 0.02
5/22/2015 0.13
5/23/2015 0.15
5/24/2015 **
5/25/2015 **
5/26/2015 1.00
5/27/2015 0.04
5/28/2015 0.00
5/29/2015 0.06
5/30/2015 0.11
5/31/2015 0.00
6/1/2015 0.00
6/2/2015 0.00
6/3/2015 T
6/4/2015 T
6/5/2015 0.32
6/6/2015 0.82
6/7/2015
6/8/2015
6/9/2015 0.00
6/10/2015 0.04
6/11/2015 0.02
6/12/2015 0.95
6/13/2015 0.10
6/14/2015 0.30
6/15/2015 T
6/16/2015 0.02
6/17/2015 0.04
6/18/2015 0.00
6/19/2015 T
6/20/2015 0.00
6/21/2015 0.00
6/22/2015 0.00
6/23/2015 0.00
6/24/2015 0.00
6/25/2015 0.01
6/26/2015 0.01
6/27/2015 0.00
6/28/2015
6/29/2015
6/30/2015
Day of YearDaily PrcpMultiday Prcp
7/1/2015
7/2/2015
7/3/2015
7/4/2015
7/5/2015
7/6/2015
7/7/2015
7/8/2015
7/9/2015
7/10/2015 0.03
7/11/2015 0.01
7/12/2015 0.01
7/13/2015 0.00
7/14/2015 0.12
7/15/2015 0.01
7/16/2015 0.39
7/17/2015 0.00
7/18/2015 0.00
7/19/2015 0.08
7/20/2015 0.00
7/21/2015 T
7/22/2015 0.06
7/23/2015 T
7/24/2015 0.00
7/25/2015 T
7/26/2015 0.00
7/27/2015 T
7/28/2015 0.00
7/29/2015 T
7/30/2015 0.00
7/31/2015 0.00
8/1/2015 0.00
8/2/2015 0.00
8/3/2015
8/4/2015
8/5/2015 0.00
8/6/2015 0.00
8/7/2015
8/8/2015
8/9/2015
8/10/2015
8/11/2015
8/12/2015
8/13/2015
8/14/2015
8/15/2015 0.00
8/16/2015 0.02
8/17/2015 0.01
8/18/2015
8/19/2015 0.23
8/20/2015 0.00
8/21/2015
8/22/2015
8/23/2015
8/24/2015 0.00
8/25/2015 0.00
8/26/2015 0.00
8/27/2015 T
8/28/2015 0.05
8/29/2015 0.00
8/30/2015 0.00
8/31/2015 T
9/1/2015 0.06
9/2/2015 0.01
9/3/2015 T
9/4/2015 0.04
9/5/2015 T
9/6/2015
9/7/2015
9/8/2015
9/9/2015 0.00
9/10/2015 0.00
9/11/2015 0.00
9/12/2015 0.00
9/13/2015 0.00
9/14/2015 0.00
9/15/2015 T
9/16/2015 0.00
9/17/2015 0.00
9/18/2015 0.00
9/19/2015 0.00
9/20/2015
9/21/2015 0.00
9/22/2015 0.00
9/23/2015 0.00
9/24/2015 0.00
9/25/2015 0.00
9/26/2015 0.00
9/27/2015 0.00
9/28/2015
9/29/2015 0.03
9/30/2015 0.03



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2014 7:00 AM 0.00 0.0 M 0.0 M
10/2/2014 7:00 AM 0.20 0.0 M 0.0 M .06" in mid aftn band of showers then cleared. R- began again after 2000 and continued until about midnight with 0.16". Low of 34 as it cleared late - a light frost on the roof.
10/3/2014 7:00 AM 0.00 0.0 M 0.0 M
10/4/2014 7:00 AM 0.00 0.0 M 0.0 M low of 33 with light frost on the roof
10/5/2014 7:00 AM 0.00 0.0 M 0.0 M
10/6/2014 7:00 AM 0.00 0.0 M 0.0 M
10/7/2014 7:00 AM 0.00 0.0 M 0.0 M
10/8/2014 7:00 AM 0.00 0.0 M 0.0 M
10/9/2014 7:00 AM 0.00 0.0 M 0.0 M
10/10/2014 7:00 AM 0.88 0.0 M 0.0 M 0.65 between precip start (~1200) and 1830, another 0.22 by 2400, then .01" after midnight
10/11/2014 7:00 AM T 0.0 M 0.0 M some off and on sprinkles to R- all day through about 8pm
10/12/2014 7:00 AM T 0.0 M 0.0 M a few off and on light showers in the afternoon
10/13/2014 7:00 AM 0.02 0.0 M 0.0 M .02" fell in showers between 1030-1200, some off and on R-- to R- 1300 to about 1600 with a trace. Low of 32 with frost on the roofs but no ice in the bird bath.
10/14/2014 7:00 AM 0.00 0.0 M 0.0 M low of 32 with light frost
10/15/2014 7:00 AM 0.00 0.0 M 0.0 M
10/16/2014 7:00 AM 0.00 0.0 M 0.0 M
10/17/2014 7:00 AM 0.00 0.0 M 0.0 M
10/18/2014 7:00 AM 0.00 0.0 M 0.0 M low of 34
10/19/2014 7:00 AM 0.00 0.0 M 0.0 M
10/20/2014 7:00 AM 0.00 0.0 M 0.0 M
10/21/2014 7:00 AM 0.00 0.0 M 0.0 M
10/22/2014 7:00 AM 0.05 0.0 M 0.0 M based on nearby reports
10/23/2014 7:00 AM 0.00 0.0 M 0.0 M
10/24/2014 7:00 AM 0.00 0.0 M 0.0 M
10/25/2014 7:00 AM 0.00 0.0 M 0.0 M
10/26/2014 7:00 AM 0.00 0.0 M 0.0 M
10/27/2014 7:00 AM 0.00 0.0 M 0.0 M
10/28/2014 7:00 AM 0.00 0.0 M 0.0 M Coldest night so far with a low of 29, 30 still at 0800.
10/29/2014 7:00 AM 0.00 0.0 M 0.0 M
10/30/2014 7:00 AM 0.00 0.0 M 0.0 M
10/31/2014 7:00 AM 0.00 0.0 M 0.0 M another low of 29
11/1/2014 7:00 AM 0.00 0.0 M 0.0 M
11/2/2014 7:00 AM 0.00 0.0 M 0.0 M
11/3/2014 7:00 AM 0.10 0.0 M 0.0 M Based on nearby observations
11/4/2014 7:00 AM 0.00 0.0 M 0.0 M Based on nearby observations
11/5/2014 7:00 AM 0.00 0.0 M 0.0 M
11/6/2014 7:00 AM 0.00 0.0 M 0.0 M
11/7/2014 7:00 AM 0.00 0.0 M 0.0 M
11/8/2014 7:00 AM 0.15 0.0 M 0.0 M Based on nearby observations
11/9/2014 7:00 AM 0.00 0.0 M 0.0 M Based on nearby observations
11/10/2014 7:00 AM 0.00 0.0 M 0.0 M
11/11/2014 7:00 AM 0.07 1.0 M 1.0 M Based on nearby observations
11/12/2014 7:00 AM 0.14 3.2 M 3.5 M Based on nearby observations
11/13/2014 7:00 AM 0.11 1.4 M 4.0 M Based on nearby observations
11/14/2014 7:00 AM 0.00 0.0 M 3.5 M Based on nearby observations
11/15/2014 7:00 AM 0.00 0.0 M 3.0 M Based on nearby observations
11/16/2014 7:00 AM 0.08 1.5 M 4.5 M Based on nearby observations
11/17/2014 7:00 AM 0.00 0.0 M 4.0 M
11/18/2014 7:00 AM 0.00 0.0 M 3.5 M
11/19/2014 7:00 AM 0.00 0.0 M 2.5 M
11/20/2014 7:00 AM 0.00 0.0 M 2.0 M
11/21/2014 7:00 AM 0.00 0.0 M 1.5 M A few bare areas in the sun
11/22/2014 7:00 AM 0.00 0.0 M 0.5 M Bare areas in the sun, ~2" left in the shade
11/23/2014 7:00 AM 0.00 0.0 M T M
11/24/2014 7:00 AM 0.00 0.0 M T M
11/25/2014 7:00 AM 0.00 0.0 M 0.0 M
11/26/2014 7:00 AM 0.01 0.1 M T M strong FROPA just before 2100, S-- to S- shortly thereafter until well after midnight (most of the snow fell after midnight).
11/27/2014 7:00 AM 0.00 0.0 M T M less than a half inch of snow left in the shade
11/28/2014 7:00 AM 0.00 0.0 M 0.0 M no snow left even in the shade
11/29/2014 7:00 AM 0.00 0.0 M 0.0 M
11/30/2014 7:00 AM 0.00 0.0 M 0.0 M
12/1/2014 7:00 AM 0.00 0.0 M 0.0 M
12/2/2014 7:00 AM 0.00 0.0 M 0.0 M
12/3/2014 7:00 AM 0.00 0.0 M 0.0 M
12/4/2014 7:00 AM 0.00 0.0 M 0.0 M
12/5/2014 7:00 AM 0.00 0.0 M 0.0 M
12/6/2014 7:00 AM 0.00 0.0 M 0.0 M
12/7/2014 7:00 AM 0.00 0.0 M 0.0 M
12/8/2014 7:00 AM 0.00 0.0 M 0.0 M
12/9/2014 7:00 AM 0.00 0.0 M 0.0 M
12/10/2014 7:00 AM 0.00 0.0 M 0.0 M
12/11/2014 7:00 AM 0.00 0.0 M 0.0 M
12/12/2014 7:00 AM 0.00 0.0 M 0.0 M
12/13/2014 7:00 AM 0.00 0.0 M 0.0 M
12/14/2014 7:00 AM 0.00 0.0 M 0.0 M
12/15/2014 7:00 AM 0.19 1.2 M 1.0 M S-- began at 0800, S- by 0830
12/16/2014 7:00 AM 0.00 0.0 M 0.5 M bare areas showing up, solid inch in the shade
12/17/2014 7:00 AM 0.00 0.0 M 0.5 M bare areas, solid snow cover in the shade
12/18/2014 7:00 AM 0.00 0.0 M T M Pretty much no snow left in the sunny areas with a high of 42 Wed, but ~0.7" left in the shade
12/19/2014 7:00 AM 0.00 0.0 M T M bare in the sun, about a half inch of snow cover in the shade.
12/20/2014 7:00 AM 0.00 0.0 M T M
12/21/2014 7:00 AM 0.00 0.0 M T M
12/22/2014 7:00 AM 0.05 T M T M Based on nearby observations
12/23/2014 7:00 AM 0.04 0.4 M T M Based on nearby observations
12/24/2014 7:00 AM 0.00 0.0 M T M a dusting of snow left in shady areas
12/25/2014 7:00 AM 0.00 0.0 M 0.0 M tiniest bit of snow left in one shady areas
12/26/2014 7:00 AM 0.43 8.0 M 7.5 M 5.4 with 0.36" by 1245pm (snow began with flurries 1230pm, S- steady by 2pm, about 2" by 5pm). Another 2.6" overnight of extreme fluff with only 0.07" melted
12/27/2014 7:00 AM 0.09 1.4 M 7.0 M storm totals: 9.4" with 0.52" melted. Most of the snow on 12/26 fell by 1000, but off and on SW- to ocnl S- all day into the evening
12/28/2014 7:00 AM 0.00 0.0 M 6.5 M
12/29/2014 7:00 AM T T M 5.5 M S-- just began around 645am.
12/30/2014 7:00 AM 0.22 3.1 M 7.0 M 0.3" by 0800, 2.9" total by 2200 with 0.18", overnight another 0.2" of dense snow (0.04"). -4 (low) at 0700
12/31/2014 7:00 AM 0.02 0.2 M 7.0 M Based on nearby observations
1/1/2015 7:00 AM 0.00 0.0 M 6.5 M
1/2/2015 7:00 AM 0.00 0.0 M 6.0 M
1/3/2015 7:00 AM 0.00 0.0 M 5.5 M
1/4/2015 7:00 AM 0.05 0.8 M 6.5 M
1/5/2015 7:00 AM 0.00 0.0 M 5.5 M Based on nearby observations
1/6/2015 7:00 AM 0.00 0.0 M 4.0 M Based on nearby observations
1/7/2015 7:00 AM T T M 3.0 M Based on nearby observations
1/8/2015 7:00 AM T T M 3.0 M Based on nearby observations
1/9/2015 7:00 AM 0.06 0.3 M 3.5 M
1/10/2015 7:00 AM 0.00 0.0 M 3.5 M
1/11/2015 7:00 AM 0.00 0.0 M 3.5 M Snow depth variable, more in the shade
1/12/2015 7:00 AM 0.01 T M 3.0 M a few sprinkles in the afternoon then .01" of R- to R-- from about 1700 to 1830. A little snow overnight beginning around 2100 but only a dusting.
1/13/2015 7:00 AM 0.01 T M 3.0 M
1/14/2015 7:00 AM 0.03 0.4 M 3.0 M snow depth quite variable, bare spots in the sun but general cover of 2-3", 5" in the shade
1/15/2015 7:00 AM 0.00 0.0 M 2.5 M snow depth variable, but solid cover still with some bare spots in sunny areas.
1/16/2015 7:00 AM 0.00 0.0 M 1.5 M Still a solid snow cover in the back yard with about 4" in the shade.
1/17/2015 7:00 AM 0.00 0.0 M 1.5 M still about 4" in the shade, snowy areas in the sun but also bare patches
1/18/2015 7:00 AM 0.00 0.0 M 1.5 M Bare areas in the sun, 4" solid shady areas
1/19/2015 7:00 AM 0.00 0.0 M T M
1/20/2015 7:00 AM T T M T M no snow left in the sunny areas but 1-2" in the shade. Evidence of a very brief period of snow overnight.
1/21/2015 7:00 AM 0.00 0.0 M T M no snow in the sun, 1-2" in the shade. Snow just beginning at 0700.
1/22/2015 7:00 AM 0.08 1.6 M 0.5 M Mostly light snow during the day and off and on but a period of heavier snow around 2-3pm
1/23/2015 7:00 AM 0.00 0.0 M T M Patches of snow still in the sun, 1-3" in the shade
1/24/2015 7:00 AM 0.00 0.0 M T M some snow patches in the sunny areas, 1-2" or so in the shade
1/25/2015 7:00 AM 0.00 0.0 M 0.0 M
1/26/2015 7:00 AM 0.00 0.0 M 0.0 M
1/27/2015 7:00 AM 0.00 0.0 M T M some snow patches left in the shade
1/28/2015 7:00 AM 0.00 0.0 M T M last areas of snow hanging on in the shade
1/29/2015 7:00 AM 0.00 0.0 M 0.0 M all the snow finally gone
1/30/2015 7:00 AM 0.00 0.0 M 0.0 M
1/31/2015 7:00 AM 0.00 0.0 M 0.0 M
2/1/2015 7:00 AM 0.54 9.0 M 6.5 M snow began ~945pm, 0.2" at 10pm, ~6" by 2am, then 9.0" at 4am, only some off and on S- to S-- after that, nothing now and 20 degrees with no wind. nice!
2/2/2015 7:00 AM 0.00 0.0 M 5.0 M
2/3/2015 7:00 AM 0.00 0.0 M 3.0 M
2/4/2015 7:00 AM 0.17 2.1 M 3.0 M snow began before 0600 (0.5" at 0545). Moderate snow now and 24, very little wind
2/5/2015 7:00 AM 0.18 2.2 M 5.5 M
2/6/2015 7:00 AM 0.00 0.0 M 1.0 M bare spots in the sun, more and solid snow cover in the shade
2/7/2015 7:00 AM 0.00 0.0 M 0.0 M
2/8/2015 7:00 AM 0.00 0.0 M 0.0 M
2/9/2015 7:00 AM 0.00 0.0 M 0.0 M
2/10/2015 7:00 AM 0.00 0.0 M 0.0 M
2/11/2015 7:00 AM 0.02 0.0 M 0.0 M Based on nearby reports
2/12/2015 7:00 AM 0.00 0.0 M 0.0 M
2/13/2015 7:00 AM 0.00 0.0 M 0.0 M
2/14/2015 7:00 AM 0.00 0.0 M 0.0 M
2/15/2015 7:00 AM 0.00 0.0 M 0.0 M
2/16/2015 7:00 AM 0.63 7.0 M 7.0 M few snow flakes in the air by 1100, by 1900 2.0"/0.22 melted, 1900-2315 1.8/0.12", 3.0"/0.29
2/17/2015 7:00 AM 0.29 4.0 M 8.0 M Storm total 11.0"/0.92" melted. 1.3" new 0700-1200, about 0.3" in a snow shower during the afternoon, then snow again in the evening was heavy at times with the rest falling ~1800-end ~2100
2/18/2015 7:00 AM 0.00 0.0 M 5.0 M
2/19/2015 7:00 AM 0.00 0.0 M 3.0 M about 6" left in the shade
2/20/2015 7:00 AM 0.00 0.0 M 1.0 M 4" left in the shade, a few bare spots in the sun
2/21/2015 7:00 AM 0.13 1.5 M 1.5 M Estimated based on nearby obs
2/22/2015 7:00 AM 0.65 8.0 M M M Based on my final melted total and nearby reports
2/23/2015 7:00 AM 0.15 1.9 M 8.0 M Based on my final melted total and nearby reports Storm total 0.88" melted with 11.4" of snow
2/24/2015 7:00 AM 0.00 0.0 M 7.0 M
2/25/2015 7:00 AM 0.00 0.0 M 4.0 M
2/26/2015 7:00 AM 0.65 9.5 M 11.0 M snow began around 1200. at 1800 4.3"/0.37, 2230 another 2.2"/0.17, then at 0700 3.0" with only 0.11" (real fluff) Total 9.5"/0.65"
2/27/2015 7:00 AM 0.13 3.6 M 11.5 M 14" in the shade, lots of settling with low moisture snow yesterday/last night. low of -1
2/28/2015 7:00 AM 0.00 0.0 M 8.0 M may have been some snow flurries/S- at times late morning into aftn but not home to see it. About a foot of snow on the ground in the shade
3/1/2015 7:00 AM T T M 7.0 M about a foot in the shade. A dusting of snow overnight
3/2/2015 7:00 AM T T M 6.5 M off and on flurries during the day. about 10.5" of snow in the shade.
3/3/2015 7:00 AM 0.00 0.0 M 5.5 M 9.5 left in the shade. Some melting overnight as it warmed briefly to 40 with some westerlies.
3/4/2015 7:00 AM 0.10 4.5 M 8.5 M 12.5 snow depth in the shade. Major fluff: snow began about 0800, by 1845 1.7"/.04, another 1.0/.02 by 2200, then 1.8/.04 overnight. S-- and 11 at 0700
3/5/2015 7:00 AM 0.03 0.5 M 7.5 M snow showers began mid to late morning then steady S- to S about 1230 until about 1500. Snow depth in shade 11.5"
3/6/2015 7:00 AM 0.00 0.0 M 6.5 M
3/7/2015 7:00 AM 0.00 0.0 M 4.0 M about 9" in the shade
3/8/2015 7:00 AM 0.00 0.0 M 3.0 M 8" in the shade
3/9/2015 7:00 AM 0.00 0.0 M 2.5 M some bare areas showing up in the sunny parts, but ~7" in the shade
3/10/2015 7:00 AM 0.00 0.0 M 1.0 M bare areas now in the sun, but solid 5 to 7" in the shade.
3/11/2015 7:00 AM 0.00 0.0 M T M most of the snow gone in the sun, 4-6" left in the shade
3/12/2015 7:00 AM 0.00 0.0 M T M snow gone in the sun but 4-5" left in the shade
3/13/2015 7:00 AM T 0.0 M T M a few sprinkles around 1930 then a little R- early AM. About 3.5" of snow left in the shade
3/14/2015 7:00 AM T 0.0 M 1.0 M a few sprinkles mid morning. still snow left in the shade.
3/15/2015 7:00 AM 0.00 0.0 M T M still some snow left in total shade
3/16/2015 7:00 AM 0.00 0.0 M T M still some snow left in total shade
3/17/2015 7:00 AM 0.00 0.0 M 0.0 M
3/18/2015 7:00 AM 0.00 0.0 M 0.0 M
3/19/2015 7:00 AM 0.08 0.0 M 0.0 M low of 40 at 0700. few sprinkles around 2000, then R- began about 2200, with .02" by 2300.
3/20/2015 7:00 AM 0.01 0.0 M 0.0 M
3/21/2015 7:00 AM 0.00 0.0 M 0.0 M
3/22/2015 7:00 AM 0.00 0.0 M 0.0 M
3/23/2015 7:00 AM T 0.0 M 0.0 M
3/24/2015 7:00 AM 0.00 0.0 M 0.0 M
3/25/2015 7:00 AM 0.01 0.0 M 0.0 M Some light rain and drizzle began after 0600. 36 at 0700 with a low of 34
3/26/2015 7:00 AM 0.14 0.8 M 0.0 M nice burst of S to S+ from about 0800 to 0915, measured just before i left at ~0915. All melted when I got home at 1800.
3/27/2015 7:00 AM 0.00 0.0 M 0.0 M
3/28/2015 7:00 AM 0.00 0.0 M 0.0 M
3/29/2015 7:00 AM 0.00 0.0 M 0.0 M hi of 79 on Saturday
3/30/2015 7:00 AM 0.00 0.0 M 0.0 M
3/31/2015 7:00 AM 0.00 0.0 M 0.0 M
4/1/2015 7:00 AM 0.00 0.0 M 0.0 M hi of 80 on Tue
4/2/2015 7:00 AM 0.01 0.0 M 0.0 M shower around 3pm
4/3/2015 7:00 AM 0.36 3.0 M 3.0 M few flakes began falling at 0845. By 1930 had 1.0", 2.0" total by 2200 with 0.28" melted, then another 1.0/.08 overnight. low of 28
4/4/2015 7:00 AM T T M T M some snow flurries between 0700-0745. A little snow left in the shade.
4/5/2015 7:00 AM 0.00 0.0 M 0.0 M
4/6/2015 7:00 AM 0.00 0.0 M 0.0 M
4/7/2015 7:00 AM 0.00 0.0 M 0.0 M
4/8/2015 7:00 AM 0.00 0.0 M 0.0 M
4/9/2015 7:00 AM 0.03 0.0 M 0.0 M showers from about 7pm until about 830pm then some off and on R- to R-- until after midnight. Thunder in Boulder but not sure at my house (this around 7pm), also mixed with wet snow in east Boulder around 715pm
4/10/2015 7:00 AM 0.00 0.0 M 0.0 M
4/11/2015 7:00 AM 0.00 0.0 M 0.0 M
4/12/2015 7:00 AM 0.00 0.0 M 0.0 M
4/13/2015 7:00 AM 0.00 0.0 M 0.0 M
4/14/2015 7:00 AM 0.00 0.0 M 0.0 M
4/15/2015 7:00 AM 0.00 0.0 M 0.0 M
4/16/2015 7:00 AM 0.01 0.1 M T M
4/17/2015 7:00 AM 2.07 4.8 M 2.5 M Wild day, snow became heavy just after 0700, 0700-0900 2.0"/0.19"melted, 0900-1030 another 1.5" of snow then got lighter and mixed with rain during the afternoon and mostly rain 1700-1900, 0900-1930 0.47" of precip (1.5 snow), then precip changed to all snow by 1930 with S to S+ until after 11pm, 1930-2230 0.8" of very wet snow with 0.32" melted, another 0.5" of snow by 0300, with overnight precip of 1.09 that was mostly rain after about midnight but mixed with snow off and on.
4/18/2015 7:00 AM 0.39 0.0 M T M Precip fell in the morning with rain, also a couple of heavier showers with some ice pellets (in town). Almos all snow gone in the sunny areas, about half an inch in the shade.
4/19/2015 7:00 AM 0.13 T M 0.0 M Mixed rain and snow at times in the morning before 1000
4/20/2015 7:00 AM T T M 0.0 M
4/21/2015 7:00 AM T 0.0 M 0.0 M
4/22/2015 7:00 AM 0.01 0.0 M 0.0 M A shower around 1430 (T) followed by other showers in the evening.
4/23/2015 7:00 AM 0.00 0.0 M 0.0 M
4/24/2015 7:00 AM T 0.0 M 0.0 M shower in mid afternoon then more sprinkles in the evening
4/25/2015 7:00 AM 0.00 0.0 M 0.0 M may have been some sprinkles around 330pm
4/26/2015 7:00 AM 0.02 0.0 M 0.0 M a shower in the afternoon (.01") then some light rain began before 0700
4/27/2015 7:00 AM 0.73 0.0 M 0.0 M Continuous rain or drizzle the whole 24h. 0.19" 0700-1200, another 0.43"1200-2100, 0.11" overnight with just light drizzle at times. 38 and R- at 0700.
4/28/2015 7:00 AM 0.05 0.0 M 0.0 M .05"fell in the morning, then a few sprinkles after 1200, partial clearing but then cloudy with drizzle again by 2100
4/29/2015 7:00 AM 0.00 0.0 M 0.0 M
4/30/2015 7:00 AM 0.00 0.0 M 0.0 M
5/1/2015 7:00 AM 0.09 0.0 M 0.0 M .02" in evening showers by 10pm, then rained again later at night
5/2/2015 7:00 AM 0.11 0.0 M 0.0 M tstm around 330-400pm
5/3/2015 7:00 AM 0.03 0.0 M 0.0 M tstm 3-320pm
5/6/2015 7:00 AM 0.20 0.0 M 0.0 M .20 fell by 1830 then only some sprinkles/drizzle after that. 46 and cloudy with no rain at 0700
5/7/2015 7:00 AM 0.04 0.0 M 0.0 M .03" during the day/evening, another .01" after 9pm
5/8/2015 7:00 AM 0.67 0.0 M 0.0 M Only a trace of rain until ~1900, then off and on rain with 0.11" by 2200, rest overnight.
5/9/2015 7:00 AM 1.62 0.0 M 0.0 M 0.91 0700-1900, 0.55 1900-2230, 0.16 2230-0700. low of 40, 42 R-- at 0700
5/10/2015 7:00 AM 1.27 4.0 M 4.0 M heavy rain in the morning with 0.58"/0700-1030, 0.01/1030-1200, .05"/1200-1700, began to mix with snow by 1850, all snow by 1930 (another 0.10 1700-1930). S to ocnl S+ 1930 to about 0100, at 2320 had 2.4"/0.39 melted, snow pretty much over by 0300 with another 1.5", then began to snow before 0700 with 0.1 more, precip 2320-0700 of 0.14" (with 1.6" snow, so much lighter) low of 28
5/11/2015 7:00 AM T T M 0.0 M
5/12/2015 7:00 AM 0.00 0.0 M 0.0 M low of 31
5/13/2015 7:00 AM 0.01 0.0 M 0.0 M tstm about 1830-1900
5/14/2015 7:00 AM 0.04 0.0 M 0.0 M a little R- in the morning, then showers in the late afternoon
5/15/2015 7:00 AM 0.01 0.0 M 0.0 M Shower with no thunder from about 6-645pm
5/16/2015 7:00 AM 0.19 0.0 M 0.0 M early aftn tstm dropped most of the rain tho had showers later around 5-6 pm as well
5/17/2015 7:00 AM 0.01 0.0 M 0.0 M a few sprinkles late afternnoon then got a shower ~1800-1830
5/18/2015 7:00 AM 0.04 0.0 M 0.0 M
5/19/2015 7:00 AM 0.82 0.0 M 0.0 M .04" by 1900 then another .03" by 2300 then another 0.75" by 0700. 44 at 0700 with R-
5/20/2015 7:00 AM 0.56 0.0 M 0.0 M low and temp at 0700 of 35 with very light drizzle. 0.40" 0700-1900, another .08" 1900-2200 then another .08" overnight.
5/21/2015 7:00 AM 0.02 0.0 M 0.0 M Most fell during the afternoon. High of only 42
5/22/2015 7:00 AM 0.13 0.0 M 0.0 M 0.01" in some afternoon light rain, then R- to R began towards morning (after 0300). R- and 45 at 0700
5/23/2015 7:00 AM 0.15 0.0 M 0.0 M 0.13" by 1900 with most falling in the morning, then another .02" by 2200 in some R-, a little drizzle and periods of dense fog overnight
5/27/2015 7:00 AM 0.04 0.0 M 0.0 M mid aftn tstm
5/28/2015 7:00 AM 0.00 0.0 M 0.0 M No rain! Did see lightning from 2100 until at least 2230 with some thunder near 2230 but no rain.
5/29/2015 7:00 AM 0.06 0.0 M 0.0 M late aftn tstm
5/30/2015 7:00 AM 0.11 0.0 M 0.0 M few morning sprinkles but most came in late aftn tstm. Some drizzle/R- after 2100 but clear this morning at 0700
5/31/2015 7:00 AM 0.00 0.0 M 0.0 M high of 77. 7.68 total for May, but falls short of 8.33" in May 1995
6/1/2015 7:00 AM 0.00 0.0 M 0.0 M
6/2/2015 7:00 AM 0.00 0.0 M 0.0 M
6/3/2015 7:00 AM T 0.0 M 0.0 M
6/4/2015 7:00 AM T 0.0 M 0.0 M
6/5/2015 7:00 AM 0.32 0.0 M 0.0 M a little small hail
6/6/2015 7:00 AM 0.82 0.0 M 0.0 M just over half an inch in the morning rains, then tstm after 8pm
6/9/2015 7:00 AM 0.00 0.0 M 0.0 M
6/10/2015 7:00 AM 0.04 0.0 M 0.0 M Tstm around 445pm, then off and on thunder with cells to our E and SE until around dark. Some sprinkles this morning around 0700.
6/11/2015 7:00 AM 0.02 0.0 M 0.0 M Sprinkles in the early morning. Mid afternoon showers/tstms mostly missed then more R- at times after 2200.
6/12/2015 7:00 AM 0.95 M M M M Some showers began around noon, by 1815 0.20", heavier rain after 1930-2100 with another 0.52" by 2100, then not much overnight until after 0600 with 0.23" more.
6/13/2015 7:00 AM 0.10 0.0 M 0.0 M Occasional rain in the morning
6/14/2015 7:00 AM 0.30 0.0 M 0.0 M tstm betwee 1700-1900
6/15/2015 7:00 AM T 0.0 M 0.0 M
6/16/2015 7:00 AM 0.02 0.0 M 0.0 M
6/17/2015 7:00 AM 0.04 0.0 M 0.0 M
6/18/2015 7:00 AM 0.00 0.0 M 0.0 M
6/19/2015 7:00 AM T 0.0 M 0.0 M
6/20/2015 7:00 AM 0.00 0.0 M 0.0 M
6/21/2015 7:00 AM 0.00 0.0 M 0.0 M
6/22/2015 7:00 AM 0.00 0.0 M 0.0 M
6/23/2015 7:00 AM 0.00 0.0 M 0.0 M
6/24/2015 7:00 AM 0.00 0.0 M 0.0 M
6/25/2015 7:00 AM 0.01 0.0 M 0.0 M brief tstm around 1700 and again ~2000
6/26/2015 7:00 AM 0.01 0.0 M 0.0 M tstm around 1800. Lightning 2200-~2400 but no rain
6/27/2015 7:00 AM 0.00 0.0 M 0.0 M
7/10/2015 7:00 AM 0.03 0.0 M 0.0 M .02" fell in a tstm followed by R- ~1700-1815, then overnight some R- around 0300
7/11/2015 7:00 AM 0.01 0.0 M 0.0 M lightning for an hour plus beginning around 8pm then tstm ~930pm
7/12/2015 7:00 AM 0.01 0.0 M 0.0 M on tstm ~1500-1530 (Trace+) then another around 1800
7/13/2015 7:00 AM 0.00 0.0 M 0.0 M
7/14/2015 7:00 AM 0.12 0.0 M 0.0 M long period of early evening mostly R- ocnl R
7/15/2015 7:00 AM 0.01 0.0 M 0.0 M some light rain late afternoon
7/16/2015 7:00 AM 0.39 0.0 M 0.0 M tstm with heavy rain late afternoon
7/17/2015 7:00 AM 0.00 0.0 M 0.0 M
7/18/2015 7:00 AM 0.00 0.0 M 0.0 M
7/19/2015 7:00 AM 0.08 0.0 M 0.0 M
7/20/2015 7:00 AM 0.00 0.0 M 0.0 M
7/21/2015 7:00 AM T 0.0 M 0.0 M
7/22/2015 7:00 AM 0.06 0.0 M 0.0 M some thunder late morning, late aftn tstm but only .02", another tstm ~2200-~2300 with .04"
7/23/2015 7:00 AM T 0.0 M 0.0 M brief late aftn sprinkle
7/24/2015 7:00 AM 0.00 0.0 M 0.0 M hi of 92
7/25/2015 7:00 AM T 0.0 M 0.0 M
7/26/2015 7:00 AM 0.00 0.0 M 0.0 M hi of 94
7/27/2015 7:00 AM T 0.0 M 0.0 M mid aftn sprinkles with some wind
7/28/2015 7:00 AM 0.00 0.0 M 0.0 M
7/29/2015 7:00 AM T 0.0 M 0.0 M some aftn sprinkles
7/30/2015 7:00 AM 0.00 0.0 M 0.0 M
7/31/2015 7:00 AM 0.00 0.0 M 0.0 M
8/1/2015 7:00 AM 0.00 0.0 M 0.0 M
8/2/2015 7:00 AM 0.00 0.0 M 0.0 M
8/5/2015 7:00 AM 0.00 0.0 M 0.0 M
8/6/2015 7:00 AM 0.00 0.0 M 0.0 M
8/15/2015 7:00 AM 0.00 0.0 M 0.0 M Thunder heard at 1415 but saw no rain. May have been a trace in the evening but not there to see it.
8/16/2015 7:00 AM 0.02 0.0 M 0.0 M sprinkles (Trace) around 1700, then a shower after midnight
8/17/2015 7:00 AM 0.01 0.0 M 0.0 M lengthy aftn shower/tstm but not much rain
8/19/2015 7:00 AM 0.23 0.0 M 0.0 M
8/20/2015 7:00 AM 0.00 0.0 M 0.0 M
8/24/2015 7:00 AM 0.00 0.0 M 0.0 M
8/25/2015 7:00 AM 0.00 0.0 M 0.0 M
8/26/2015 7:00 AM 0.00 0.0 M 0.0 M
8/27/2015 7:00 AM T 0.0 M 0.0 M late aftn trace. In Boulder wind gust ~4pm estimated at 50 mph or so.
8/28/2015 7:00 AM 0.05 0.0 M 0.0 M .01 0700-0800, .04" in late aftn shower
8/29/2015 7:00 AM 0.00 0.0 M 0.0 M
8/30/2015 7:00 AM 0.00 0.0 M 0.0 M
8/31/2015 7:00 AM T 0.0 M 0.0 M sprinkles just before 0700
9/1/2015 7:00 AM 0.06 0.0 M 0.0 M late aftn tstm
9/2/2015 7:00 AM 0.01 0.0 M 0.0 M shower just before noon
9/3/2015 7:00 AM T 0.0 M 0.0 M few sprinkles ~6 & 730 pm
9/4/2015 7:00 AM 0.04 0.0 M 0.0 M late aftn shwrs
9/5/2015 7:00 AM T 0.0 M 0.0 M few sprinkles late aftn
9/9/2015 7:00 AM 0.00 0.0 M 0.0 M low of 45
9/10/2015 7:00 AM 0.00 0.0 M 0.0 M another low of 45
9/11/2015 7:00 AM 0.00 0.0 M 0.0 M
9/12/2015 7:00 AM 0.00 0.0 M 0.0 M
9/13/2015 7:00 AM 0.00 0.0 M 0.0 M
9/14/2015 7:00 AM 0.00 0.0 M 0.0 M hi of 88
9/15/2015 7:00 AM T 0.0 M 0.0 M some sprinkles around 3 am
9/16/2015 7:00 AM 0.00 0.0 M 0.0 M
9/17/2015 7:00 AM 0.00 0.0 M 0.0 M
9/18/2015 7:00 AM 0.00 0.0 M 0.0 M
9/19/2015 7:00 AM 0.00 0.0 M 0.0 M
9/21/2015 7:00 AM 0.00 0.0 M 0.0 M
9/22/2015 7:00 AM 0.00 0.0 M 0.0 M
9/23/2015 7:00 AM 0.00 0.0 M 0.0 M
9/24/2015 7:00 AM 0.00 0.0 M 0.0 M
9/25/2015 7:00 AM 0.00 0.0 M 0.0 M
9/26/2015 7:00 AM 0.00 0.0 M 0.0 M
9/27/2015 7:00 AM 0.00 0.0 M 0.0 M
9/29/2015 7:00 AM 0.03 0.0 M 0.0 M periods of R- overnight
9/30/2015 7:00 AM 0.03 0.0 M 0.0 M afternoon showers with thunder midaftn



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
5/4/2015 5/05/2015 7:00 AM 2 0.46 0.0 0.00
5/24/2015 5/26/2015 7:00 AM 3 1.00 0.0 M Most fell in tstm about 5pm on 25 May with small hail (less than pea size)



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