Station Overview Station Location
Station Number CO-BO-8 Latitude 39.9925
Station Name Lafayette 0.4 WSW Longitude -105.1057
County Boulder Elevation (ft) 5285



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 18 1.12 1.63 31 1.63 31 0.00 0 0 10 3 6.3 2 3
Nov 18 0.95 0.64 30 0.64 30 0.00 0 0 8 1 10.9 5 5
Dec 18 0.70 0.03 31 0.03 31 0.00 0 0 2 6 0.6 2 1
Jan 19 0.49 1.59 30 1.59 30 0.00 0 0 7 5 15.3 7 16
Feb 19 0.47 0.43 17 0.43 17 0.00 0 0 3 1 8.3 2 5
March 19 1.56 1.76 31 1.76 31 0.00 0 0 9 3 13.2 6 9
April 19 2.01 1.15 30 1.15 30 0.00 0 0 8 4 9.2 3 3
May 19 2.25 2.59 31 2.59 31 0.00 0 0 15 5 4.5 3 1
June 19 1.88 1.67 20 1.67 20 0.00 0 0 9 5 0.0 0 0
July 19 1.54 3.36 31 3.36 31 0.00 0 0 14 3 0.0 0 0
Aug 19 1.65 0.55 31 0.55 31 0.00 0 0 4 10 0.0 0 0
Sept 19 1.40 0.39 30 0.39 30 0.00 0 0 5 3 0.0 0 0
Water Year Totals: 16.02" 15.79" 343 days 15.79" 343 0.00" 0 days 0 94 days 49 days 68.3" 30 days 43 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
10/1/2018 T
10/2/2018 0.00
10/3/2018 T
10/4/2018 0.01
10/5/2018 0.05
10/6/2018 0.33
10/7/2018 0.00
10/8/2018 0.36
10/9/2018 0.10
10/10/2018 0.04
10/11/2018 0.05
10/12/2018 0.00
10/13/2018 0.00
10/14/2018 0.43
10/15/2018 0.07
10/16/2018 0.00
10/17/2018 0.00
10/18/2018 0.00
10/19/2018 0.00
10/20/2018 0.00
10/21/2018 0.00
10/22/2018 0.00
10/23/2018 0.00
10/24/2018 T
10/25/2018 0.00
10/26/2018 0.00
10/27/2018 0.00
10/28/2018 0.00
10/29/2018 0.00
10/30/2018 0.00
10/31/2018 0.19
11/1/2018 0.00
11/2/2018 0.00
11/3/2018 0.03
11/4/2018 0.01
11/5/2018 0.00
11/6/2018 0.00
11/7/2018 0.00
11/8/2018 0.00
11/9/2018 T
11/10/2018 0.00
11/11/2018 0.14
11/12/2018 0.25
11/13/2018 0.02
11/14/2018 0.00
11/15/2018 0.00
11/16/2018 0.00
11/17/2018 0.01
11/18/2018 0.14
11/19/2018 0.00
11/20/2018 0.00
11/21/2018 0.00
11/22/2018 0.00
11/23/2018 0.00
11/24/2018 0.00
11/25/2018 0.04
11/26/2018 0.00
11/27/2018 0.00
11/28/2018 0.00
11/29/2018 0.00
11/30/2018 0.00
12/1/2018 0.01
12/2/2018 0.00
12/3/2018 0.02
12/4/2018 0.00
12/5/2018 0.00
12/6/2018 T
12/7/2018 T
12/8/2018 0.00
12/9/2018 0.00
12/10/2018 0.00
12/11/2018 0.00
12/12/2018 0.00
12/13/2018 0.00
12/14/2018 0.00
12/15/2018 0.00
12/16/2018 0.00
12/17/2018 0.00
12/18/2018 0.00
12/19/2018 0.00
12/20/2018 0.00
12/21/2018 0.00
12/22/2018 0.00
12/23/2018 T
12/24/2018 0.00
12/25/2018 0.00
12/26/2018 0.00
12/27/2018 T
12/28/2018 T
12/29/2018 T
12/30/2018 0.00
12/31/2018 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2019 0.07
1/2/2019 T
1/3/2019 0.00
1/4/2019 0.00
1/5/2019 0.00
1/6/2019 0.00
1/7/2019 0.00
1/8/2019 0.00
1/9/2019 0.00
1/10/2019 0.00
1/11/2019 0.10
1/12/2019 0.66
1/13/2019 T
1/14/2019 0.00
1/15/2019 0.00
1/16/2019 0.00
1/17/2019 0.00
1/18/2019 0.00
1/19/2019 0.29
1/20/2019 0.00
1/21/2019 0.00
1/22/2019 T
1/23/2019 T
1/24/2019 T
1/25/2019 0.14
1/26/2019 0.00
1/27/2019
1/28/2019 0.18
1/29/2019 0.15
1/30/2019 0.00
1/31/2019 0.00
2/1/2019 0.00
2/2/2019 0.00
2/3/2019 0.00
2/4/2019 0.00
2/5/2019 0.00
2/6/2019 0.00
2/7/2019 0.25
2/8/2019 0.00
2/9/2019 0.00
2/10/2019
2/11/2019
2/12/2019
2/13/2019
2/14/2019
2/15/2019
2/16/2019
2/17/2019
2/18/2019
2/19/2019
2/20/2019
2/21/2019 0.00
2/22/2019 0.01
2/23/2019 0.17
2/24/2019 0.00
2/25/2019 0.00
2/26/2019 0.00
2/27/2019 0.00
2/28/2019 T
3/1/2019 0.00
3/2/2019 0.04
3/3/2019 0.28
3/4/2019 0.03
3/5/2019 0.00
3/6/2019 0.00
3/7/2019 0.04
3/8/2019 0.00
3/9/2019 0.01
3/10/2019 0.00
3/11/2019 0.00
3/12/2019 0.00
3/13/2019 0.25
3/14/2019 0.77
3/15/2019 0.00
3/16/2019 0.00
3/17/2019 0.00
3/18/2019 0.00
3/19/2019 0.00
3/20/2019 0.00
3/21/2019 0.00
3/22/2019 0.00
3/23/2019 T
3/24/2019 0.00
3/25/2019 T
3/26/2019 T
3/27/2019 0.00
3/28/2019 0.00
3/29/2019 0.04
3/30/2019 0.30
3/31/2019 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2019 0.00
4/2/2019 0.00
4/3/2019 T
4/4/2019 0.00
4/5/2019 0.00
4/6/2019 0.00
4/7/2019 0.00
4/8/2019 0.00
4/9/2019 0.00
4/10/2019 0.01
4/11/2019 0.48
4/12/2019 0.00
4/13/2019 0.15
4/14/2019 T
4/15/2019 0.00
4/16/2019 0.00
4/17/2019 0.01
4/18/2019 T
4/19/2019 0.00
4/20/2019 0.00
4/21/2019 0.00
4/22/2019 0.15
4/23/2019 0.01
4/24/2019 0.00
4/25/2019 0.00
4/26/2019 0.00
4/27/2019 0.01
4/28/2019 0.00
4/29/2019 T
4/30/2019 0.33
5/1/2019 0.15
5/2/2019 0.05
5/3/2019 0.00
5/4/2019 0.00
5/5/2019 0.00
5/6/2019 0.00
5/7/2019 0.33
5/8/2019 0.04
5/9/2019 0.40
5/10/2019 0.12
5/11/2019 0.00
5/12/2019 T
5/13/2019 0.00
5/14/2019 T
5/15/2019 0.00
5/16/2019 0.00
5/17/2019 T
5/18/2019 0.15
5/19/2019 0.02
5/20/2019 0.06
5/21/2019 0.69
5/22/2019 0.03
5/23/2019 0.11
5/24/2019 0.02
5/25/2019 0.00
5/26/2019 0.00
5/27/2019 T
5/28/2019 0.35
5/29/2019 0.07
5/30/2019 0.00
5/31/2019 T
6/1/2019 0.01
6/2/2019 T
6/3/2019 0.09
6/4/2019 T
6/5/2019 T
6/6/2019 0.24
6/7/2019
6/8/2019
6/9/2019
6/10/2019
6/11/2019
6/12/2019
6/13/2019
6/14/2019
6/15/2019
6/16/2019
6/17/2019 0.18
6/18/2019 0.13
6/19/2019 0.02
6/20/2019 0.00
6/21/2019 T
6/22/2019 0.66
6/23/2019 0.33
6/24/2019 0.01
6/25/2019 0.00
6/26/2019 T
6/27/2019 0.00
6/28/2019 0.00
6/29/2019 0.00
6/30/2019 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2019 0.06
7/2/2019 0.21
7/3/2019 0.00
7/4/2019 T
7/5/2019 0.42
7/6/2019 0.67
7/7/2019 0.00
7/8/2019 0.56
7/9/2019 T
7/10/2019 0.00
7/11/2019 0.00
7/12/2019 0.00
7/13/2019 0.00
7/14/2019 0.01
7/15/2019 0.02
7/16/2019 0.01
7/17/2019 0.11
7/18/2019 0.00
7/19/2019 0.00
7/20/2019 0.00
7/21/2019 0.17
7/22/2019 0.83
7/23/2019 0.00
7/24/2019 0.00
7/25/2019 0.16
7/26/2019 T
7/27/2019 0.00
7/28/2019 0.02
7/29/2019 0.00
7/30/2019 0.00
7/31/2019 0.11
8/1/2019 0.09
8/2/2019 0.11
8/3/2019 T
8/4/2019 0.00
8/5/2019 T
8/6/2019 T
8/7/2019 0.00
8/8/2019 0.30
8/9/2019 0.05
8/10/2019 0.00
8/11/2019 T
8/12/2019 T
8/13/2019 0.00
8/14/2019 0.00
8/15/2019 0.00
8/16/2019 0.00
8/17/2019 0.00
8/18/2019 T
8/19/2019 0.00
8/20/2019 0.00
8/21/2019 0.00
8/22/2019 T
8/23/2019 T
8/24/2019 T
8/25/2019 0.00
8/26/2019 0.00
8/27/2019 0.00
8/28/2019 0.00
8/29/2019 0.00
8/30/2019 0.00
8/31/2019 T
9/1/2019 0.00
9/2/2019 0.00
9/3/2019 0.00
9/4/2019 0.00
9/5/2019 T
9/6/2019 T
9/7/2019 0.07
9/8/2019 0.00
9/9/2019 0.27
9/10/2019 0.00
9/11/2019 0.00
9/12/2019 0.01
9/13/2019 0.00
9/14/2019 0.00
9/15/2019 0.00
9/16/2019 0.00
9/17/2019 0.00
9/18/2019 0.00
9/19/2019 T
9/20/2019 0.00
9/21/2019 0.00
9/22/2019 0.01
9/23/2019 0.00
9/24/2019 0.00
9/25/2019 0.00
9/26/2019 0.00
9/27/2019 0.00
9/28/2019 0.03
9/29/2019 0.00
9/30/2019 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2018 7:00 AM T 0.0 M 0.0 M some very light morning drizzle
10/2/2018 7:00 AM 0.00 0.0 M 0.0 M
10/3/2018 7:00 AM T 0.0 M 0.0 M some very light rain early afternoon
10/4/2018 7:00 AM 0.01 0.0 M 0.0 M light rain shower early evening
10/5/2018 7:00 AM 0.05 0.0 M 0.0 M aftn thundershower reported
10/6/2018 7:00 AM 0.33 0.0 M 0.0 M mostly evening/early am rain
10/7/2018 7:00 AM 0.00 0.0 M 0.0 M
10/8/2018 7:00 AM 0.36 0.0 M 0.0 M overnight rain reported
10/9/2018 7:00 AM 0.10 0.0 M 0.0 M light rain reported mid-day through night
10/10/2018 7:00 AM 0.04 0.0 M 0.0 M light rain late evening through night reported
10/11/2018 7:00 AM 0.05 T M 0.0 M aftn/eve rain and snow reported
10/12/2018 7:00 AM 0.00 0.0 M 0.0 M
10/13/2018 7:00 AM 0.00 0.0 M 0.0 M
10/14/2018 7:00 AM 0.43 4.8 M 4.5 M Sunny and mild, then became ovc ca 19L. R- ca 2030 soon changed to snow, with ~0.1" 2200, 1.8" at 0030, and 4.8" at measurement time.
10/15/2018 7:00 AM 0.07 1.5 M 4.5 M light snow until early afternoon, then mostly cloudy - cleared over night with low 14F
10/16/2018 7:00 AM 0.00 0.0 M 0.5 M
10/17/2018 7:00 AM 0.00 0.0 M T M
10/18/2018 7:00 AM 0.00 0.0 M 0.0 M
10/19/2018 7:00 AM 0.00 0.0 M 0.0 M
10/20/2018 7:00 AM 0.00 0.0 M 0.0 M
10/21/2018 7:00 AM 0.00 0.0 M 0.0 M
10/22/2018 7:00 AM 0.00 0.0 M 0.0 M
10/23/2018 7:00 AM 0.00 0.0 M 0.0 M
10/24/2018 7:00 AM T 0.0 M 0.0 M RWU before dawn
10/25/2018 7:00 AM 0.00 0.0 M 0.0 M
10/26/2018 7:00 AM 0.00 0.0 M 0.0 M
10/27/2018 7:00 AM 0.00 0.0 M 0.0 M
10/28/2018 7:00 AM 0.00 0.0 M 0.0 M
10/29/2018 7:00 AM 0.00 0.0 M 0.0 M
10/30/2018 7:00 AM 0.00 0.0 M 0.0 M
10/31/2018 7:00 AM 0.19 T M T M Very light rain showers mid-am and early pm (T). Light rain and snow showers mid-aftn through evening - roofs and some cold surfaces whitened, but mostly just wet.
11/1/2018 7:00 AM 0.00 0.0 M 0.0 M
11/2/2018 7:00 AM 0.00 0.0 M 0.0 M
11/3/2018 7:00 AM 0.03 0.0 M 0.0 M gusty rain shower late evening
11/4/2018 7:00 AM 0.01 0.0 M 0.0 M light morning (.01") & mid-aftn (T) showers
11/5/2018 7:00 AM 0.00 0.0 M 0.0 M
11/6/2018 7:00 AM 0.00 0.0 M 0.0 M
11/7/2018 7:00 AM 0.00 0.0 M 0.0 M
11/8/2018 7:00 AM 0.00 0.0 M 0.0 M
11/9/2018 7:00 AM T T M 0.0 M some very light morning snow - widely-spaced flakes
11/10/2018 7:00 AM 0.00 0.0 M 0.0 M
11/11/2018 7:00 AM 0.14 3.5 0.18 3.5 M Light snow began late evening, about a half inch before midnight & stayed light until around 4 am. Heavier snow until just before obs time.
11/12/2018 7:00 AM 0.25 5.5 M 7.0 M SE1630 with +3.3/.16", S- 1745-0200, S- 0545ff +2.2" at obs time
11/13/2018 7:00 AM 0.02 0.6 M 4.0 M light snow ended mid-morning; sky quickly cleared
11/14/2018 7:00 AM 0.00 0.0 M M M
11/15/2018 7:00 AM 0.00 0.0 M M M
11/16/2018 7:00 AM 0.00 0.0 M 0.0 M
11/17/2018 7:00 AM 0.01 0.0 M 0.0 M light drizzle began around 0330, temperature in mid-30s, gradually dropping but still above freezing at obs time
11/18/2018 7:00 AM 0.14 0.7 M 0.5 M Temp dropped to freezing around 0830 and there was brief ZL-/ZR-. SG began ca 0915, then S- a bit later. 0.5" by 13L with no additional accumulation until evening. Sky cleared ca 04L.
11/19/2018 7:00 AM 0.00 0.0 M T M
11/20/2018 7:00 AM 0.00 0.0 M T M
11/21/2018 7:00 AM 0.00 0.0 M T M
11/22/2018 7:00 AM 0.00 0.0 M T M
11/23/2018 7:00 AM 0.00 0.0 M 0.0 M warm yesterday (56F max) and windy/mild over night (38F min) - enough to melt the remaining natural snow from last weekend
11/24/2018 7:00 AM 0.00 0.0 M 0.0 M another windy day
11/25/2018 7:00 AM 0.04 0.6 M 0.5 M afternoon rain shower (.02"), late evening snow squall (0.6"/.02")
11/26/2018 7:00 AM 0.00 0.0 M T M
11/27/2018 7:00 AM 0.00 0.0 M T M
11/28/2018 7:00 AM 0.00 0.0 M 0.0 M windy evening and over night - temp stayed near 50, with min 47F
11/29/2018 7:00 AM 0.00 0.0 M 0.0 M
11/30/2018 7:00 AM 0.00 0.0 M 0.0 M
12/1/2018 7:00 AM 0.01 T M 0.0 M Very light snow aftn to early evening. Temp just above freezing, so mostly melted as it fell. Cleared mid-evening.
12/2/2018 7:00 AM 0.00 0.0 M 0.0 M
12/3/2018 7:00 AM 0.02 0.4 M 0.5 M sunny early, then clouds increased aftn; light evening snow & remained overcast
12/4/2018 7:00 AM 0.00 0.0 M T M
12/5/2018 7:00 AM 0.00 0.0 M T M
12/6/2018 7:00 AM T 0.2 M T M very light snow late evening, then during night, with 0.2" mostly snow grains
12/7/2018 7:00 AM T T M T M
12/8/2018 7:00 AM 0.00 0.0 M T M
12/9/2018 7:00 AM 0.00 0.0 M T M
12/10/2018 7:00 AM 0.00 0.0 M T M
12/11/2018 7:00 AM 0.00 0.0 M 0.0 M
12/12/2018 7:00 AM 0.00 0.0 M 0.0 M
12/13/2018 7:00 AM 0.00 0.0 M 0.0 M
12/14/2018 7:00 AM 0.00 0.0 M 0.0 M
12/15/2018 7:00 AM 0.00 0.0 M 0.0 M
12/16/2018 7:00 AM 0.00 0.0 M 0.0 M
12/17/2018 7:00 AM 0.00 0.0 M 0.0 M
12/18/2018 7:00 AM 0.00 0.0 M 0.0 M
12/19/2018 7:00 AM 0.00 0.0 M 0.0 M
12/20/2018 7:00 AM 0.00 0.0 M 0.0 M
12/21/2018 7:00 AM 0.00 0.0 M 0.0 M
12/22/2018 7:00 AM 0.00 0.0 M 0.0 M
12/23/2018 7:00 AM T T M 0.0 M flakes in the air mid-morning - no accumulation
12/24/2018 7:00 AM 0.00 0.0 M 0.0 M
12/25/2018 7:00 AM 0.00 0.0 M 0.0 M Cloudy this morning, but no snow for Christmas. :^)
12/26/2018 7:00 AM 0.00 0.0 M 0.0 M
12/27/2018 7:00 AM T T M T M just enough snow to dust surfaces
12/28/2018 7:00 AM T T M 0.0 M a few flakes in the air around noon
12/29/2018 7:00 AM T T M 0.0 M ovc/mo cldy with a few flakes in the air from time to time; cleared before dawn
12/30/2018 7:00 AM 0.00 0.0 M 0.0 M
12/31/2018 7:00 AM 0.00 0.0 M 0.0 M
1/1/2019 7:00 AM 0.07 1.2 M 1.0 M Light snow morning (0.2"), slacked off for a couple of hours, then picked up again. Partial clearing late evening, then overcast again with light snow but very little accumulation after midnight.
1/2/2019 7:00 AM T T M 1.0 M cleared by noon
1/3/2019 7:00 AM 0.00 0.0 M 0.5 M
1/4/2019 7:00 AM 0.00 0.0 M T M
1/5/2019 7:00 AM 0.00 0.0 M T M
1/6/2019 7:00 AM 0.00 0.0 M T M
1/7/2019 7:00 AM 0.00 0.0 M 0.0 M
1/8/2019 7:00 AM 0.00 0.0 M 0.0 M
1/9/2019 7:00 AM 0.00 0.0 M 0.0 M
1/10/2019 7:00 AM 0.00 0.0 M 0.0 M
1/11/2019 7:00 AM 0.10 T M T M R-- began mid-dark am, picked up around 0430, then changed to snow at obs time
1/12/2019 7:00 AM 0.66 4.0 M 4.0 M light snow or R-S- all day; little accum during afternoon, as about equal melting with temp at 33F. 3.2" as of 2230. Storm total .76"/4.0".
1/13/2019 7:00 AM T T M 3.0 M cleared by noon
1/14/2019 7:00 AM 0.00 0.0 M 1.5 M
1/15/2019 7:00 AM 0.00 0.0 M 1.0 M
1/16/2019 7:00 AM 0.00 0.0 M 1.0 M
1/17/2019 7:00 AM 0.00 0.0 M 0.5 M
1/18/2019 7:00 AM 0.00 0.0 M T M
1/19/2019 7:00 AM 0.29 1.2 M 1.0 M Some R-S- mid-morning (.05 liquid; T accum) switched to S at 1100. SE ca 14L, with clearing before sunset.
1/20/2019 7:00 AM 0.00 0.0 M T M
1/21/2019 7:00 AM 0.00 0.0 M T M
1/22/2019 7:00 AM T 0.1 M T M Sunny early, mo cldy by mid-day. S- and breezy beginning mid-evening, but didn't last long & blew off of exposed surfaces. Roads mostly bare at sunrise.
1/23/2019 7:00 AM T T M T M a brief mid-morning snow shower
1/24/2019 7:00 AM T T M T M Very light snow began about an hour before sunrise. Snow and wind picked up right at obs time.
1/25/2019 7:00 AM 0.14 2.3 M 2.0 M light to moderate snow with stiff wind, but skies cleared quickly by noon
1/26/2019 7:00 AM 0.00 0.0 M 0.5 M
1/28/2019 7:20 AM 0.18 3.1 M 3.0 M light snow began well after midnight
1/29/2019 7:00 AM 0.15 3.4 M 4.0 M moderate to light snow all morning; storm total 6.5"
1/30/2019 7:00 AM 0.00 0.0 M 3.0 M
1/31/2019 7:00 AM 0.00 0.0 M 1.0 M
2/1/2019 7:00 AM 0.00 0.0 M 0.5 M
2/2/2019 7:00 AM 0.00 0.0 M T M
2/3/2019 7:00 AM 0.00 0.0 M T M
2/4/2019 7:00 AM 0.00 0.0 M T M
2/5/2019 7:00 AM 0.00 0.0 M T M
2/6/2019 7:00 AM 0.00 0.0 M T M 1/4 F at obs time today
2/7/2019 7:00 AM 0.25 6.4 M 6.0 M Two periods of moderate snow, late morning, early evening, with a thin-sun break early aftn. Cleared ca 03-04L, with temp -8F at sunrise.
2/8/2019 7:00 AM 0.00 0.0 M 4.0 M yesterday -8F, +13F; this morning -4F
2/9/2019 7:00 AM 0.00 0.0 M 3.0 M
2/21/2019 7:00 AM 0.00 0.0 M T M
2/22/2019 7:00 AM 0.01 T M T M very light snow late evening through night; snow grains and some ZL- toward sunrise
2/23/2019 7:00 AM 0.17 1.9 M 2.0 M very light snow all day, with a period of light to moderate 1615-1700, then light snow through evening
2/24/2019 7:00 AM 0.00 0.0 M T M
2/25/2019 7:00 AM 0.00 0.0 M T T
2/26/2019 7:00 AM 0.00 0.0 M T M
2/27/2019 7:00 AM 0.00 0.0 M T M
2/28/2019 7:00 AM T T M T M a dusting of morning snow
3/1/2019 7:00 AM 0.00 0.0 M T M
3/2/2019 7:00 AM 0.04 0.5 M 0.5 M light snow began a couple hours before sunrise
3/3/2019 7:00 AM 0.28 4.1 M 4.0 M Light snow mostly ended mid-morning, then picked up again early aftn. High 32F at 10L, Sat low 4F at midnight, am min -2F.
3/4/2019 7:00 AM 0.03 0.5 M 4.5 M light snow afternoon
3/5/2019 7:00 AM 0.00 0.0 M 3.0 M
3/6/2019 7:00 AM 0.00 0.0 M 2.5 M
3/7/2019 7:00 AM 0.04 0.1 M 1.5 M A few SG mid-aftn, then SG-/ZRW- mid-eve, and SW- late evening. 1/4F at sunrise.
3/8/2019 7:00 AM 0.00 0.0 M T M
3/9/2019 7:00 AM 0.01 0.0 M T M RW-- late aftn (a few drops); RW- mid-evening .01"
3/10/2019 7:00 AM 0.00 0.0 M T M
3/11/2019 7:00 AM 0.00 0.0 M T M
3/12/2019 7:00 AM 0.00 0.0 M T M
3/13/2019 7:10 AM 0.25 0.0 M T M some very light rain late evening (T), R- began 0430, with R around 0630
3/14/2019 7:00 AM 0.77 4.7 0.42 4.0 M snow mixed with rain ca 08L, changed to all snow around 0830 - .28" in rain (.53" total rain). Snow and blowing snow through mid-afternoon.
3/15/2019 7:00 AM 0.00 0.0 M 1.5 M
3/16/2019 7:00 AM 0.00 0.0 M T M
3/17/2019 7:00 AM 0.00 0.0 M T M
3/18/2019 7:00 AM 0.00 0.0 M T M
3/19/2019 7:00 AM 0.00 0.0 M T M
3/20/2019 7:00 AM 0.00 0.0 M T M
3/21/2019 7:00 AM 0.00 0.0 M 0.0 M
3/22/2019 7:00 AM 0.00 0.0 M 0.0 M
3/23/2019 7:00 AM T 0.0 M 0.0 M some light showers mid-evening
3/24/2019 7:00 AM 0.00 0.0 M 0.0 M
3/25/2019 7:00 AM T 0.0 M 0.0 M very light late-aftn shower
3/26/2019 7:00 AM T 0.0 M 0.0 M low clouds/fog a.m. with a little drizzle mid-morning
3/27/2019 7:00 AM 0.00 0.0 M 0.0 M
3/28/2019 7:00 AM 0.00 0.0 M 0.0 M
3/29/2019 7:00 AM 0.04 0.0 M 0.0 M after a mostly sunny day, low overcast blew in from N/NE early evening, with drizzle about bedtime which continued through night
3/30/2019 7:00 AM 0.30 3.3 M 3.5 M Drizzle ended ca 08L (T), then ovc until RW- late aftn. Snow began 2000, with an inch by bedtime, less than an inch after 01L.
3/31/2019 7:00 AM 0.00 0.0 M T M
4/1/2019 7:00 AM 0.00 0.0 M 0.0 M
4/2/2019 7:00 AM 0.00 0.0 M 0.0 M
4/3/2019 7:00 AM T 0.0 M 0.0 M very light evening showers
4/4/2019 7:00 AM 0.00 0.0 M 0.0 M
4/5/2019 7:00 AM 0.00 0.0 M 0.0 M
4/6/2019 7:00 AM 0.00 0.0 M 0.0 M
4/7/2019 7:00 AM 0.00 0.0 M 0.0 M
4/8/2019 7:00 AM 0.00 0.0 M 0.0 M
4/9/2019 7:00 AM 0.00 0.0 M 0.0 M
4/10/2019 7:00 AM 0.01 0.0 M 0.0 M became overcast after midnight; L- started before sunrise, with R-- at obs time
4/11/2019 7:00 AM 0.48 3.8 M 4.5 M light rain am gave way to snow pm, with enough wind to make the total on snow board a challenge
4/12/2019 7:00 AM 0.00 0.0 M T M
4/13/2019 7:00 AM 0.15 1.5 M 1.5 M a very light snow shower early aftn, then S- late evening through pre-dawn
4/14/2019 7:00 AM T T M 0.0 M late-morning light snow shower
4/15/2019 7:00 AM 0.00 0.0 M 0.0 M
4/16/2019 7:00 AM 0.00 0.0 M 0.0 M
4/17/2019 7:00 AM 0.01 0.0 M 0.0 M RWU early eve
4/18/2019 7:00 AM T 0.0 M 0.0 M An early aftn shower. Lightning E late evening, with some thunder, but no precip.
4/19/2019 7:00 AM 0.00 0.0 M 0.0 M
4/20/2019 7:00 AM 0.00 0.0 M 0.0 M
4/21/2019 7:00 AM 0.00 0.0 M 0.0 M
4/22/2019 7:00 AM 0.15 0.0 M 0.0 M Thunder E early aftn. R- late aftn (.14"), RW- late eve, RWU (.01") before dawn.
4/23/2019 7:00 AM 0.01 0.0 M 0.0 M low overcast all day, with very light rain & drizzle until mid aftn
4/24/2019 7:00 AM 0.00 0.0 M 0.0 M
4/25/2019 7:00 AM 0.00 0.0 M 0.0 M
4/26/2019 7:00 AM 0.00 0.0 M M 0.00
4/27/2019 7:00 AM 0.01 0.0 M 0.0 M a few drops late evening, followed by a short shower before midnight
4/28/2019 7:00 AM 0.00 0.0 M 0.0 M
4/29/2019 7:00 AM T 0.0 M 0.0 M very warm by noon, then afternoon became cloudy, cooler, and quite windy; a very light shower late evening
4/30/2019 7:00 AM 0.33 3.9 M 3.5 M A few flakes before noon, then moderate snow late aftn, 1.8" in just over an hour. Light snow ended early eve (+0.7"), then picked up again mid-eve through early am (+1.4").
5/1/2019 7:00 AM 0.15 T M 0.0 M off & on rain showers, with some snow early aftn, rain showers continued over night
5/2/2019 7:00 AM 0.05 0.0 M 0.0 M overcast except for a couple small breaks; dry until some light rain late aftn into mid-evening
5/3/2019 7:00 AM 0.00 0.0 M 0.0 M
5/4/2019 7:00 AM 0.00 0.0 M 0.0 M
5/5/2019 7:00 AM 0.00 0.0 M 0.0 M
5/6/2019 7:00 AM 0.00 0.0 M 0.0 M
5/7/2019 7:00 AM 0.33 T M 0.0 M Thundershower with small hail early evening; rain shower before sunrise
5/8/2019 7:00 AM 0.04 0.0 M 0.0 M a few showers during day, another near midnight; 1/4F observed 0200, gone 0430
5/9/2019 7:00 AM 0.40 1.0 M T M RW-- mid-am, RW- mid-day, then R- evening. Changed to S- ca 0030, continued rest of night through obs time. Pavement wet, light coverage on grass.
5/10/2019 7:00 AM 0.12 0.1 M 0.0 M SW- until late aftn, then RW-, mostly ended early eve; low clouds cleared before sunrise, but mid ovc remains
5/11/2019 7:00 AM 0.00 0.0 M 0.0 M
5/12/2019 7:00 AM T 0.0 M 0.0 M passing showers in aftn - only a few drops passed overhead
5/13/2019 7:00 AM 0.00 0.0 M 0.0 M
5/14/2019 7:00 AM T 0.0 M 0.0 M a brief passing shower late aftn
5/15/2019 7:00 AM 0.00 0.0 M 0.0 M
5/16/2019 7:00 AM 0.00 0.0 M 0.0 M
5/17/2019 7:00 AM T 0.0 M 0.0 M two very light/less-than-five-minute afternoon showers with gusty wind
5/18/2019 7:00 AM 0.15 0.0 M 0.0 M afternoon and evening thundershowers; most of the rain fell in a few minutes mid-aftn
5/19/2019 7:00 AM 0.02 0.0 M 0.0 M an early-aftn and a late-eve shower, .01" ea
5/20/2019 7:00 AM 0.06 0.0 M 0.0 M Some early drizzle then mo ovc. RWU after midnight, then L-.
5/21/2019 7:00 AM 0.69 3.4 M 3.5 M brief L-SG- mid-morning; R- ca 16L, changed to S- 2045 (.18" in rain) 0.8" 2200, +1.6" 0100, +0.9" 0445, +0.1" 0700.
5/22/2019 7:00 AM 0.03 T M T M a period of light snow am, no accum. Mo ovc, steady overnight temp 35F, with a brief dip to 33F when sky partially cleared.
5/23/2019 7:00 AM 0.11 0.0 M 0.0 M light rain late aftn/early eve .03", light rain late eve/very early am .06", light rain began before dawn .02" at obs time. 39F min
5/24/2019 7:00 AM 0.02 0.0 M 0.0 M Light rain ended mid-am, overcast and temp 43F most of day; another very light rain shower late aftn. Partial clearing early eve, but then RW- late eve +.01". Cleared after midnight with heavy roof frost, min 36F.
5/25/2019 7:00 AM 0.00 0.0 M 0.0 M
5/26/2019 7:00 AM 0.00 0.0 M 0.0 M mo clr w/some aftn clouds
5/27/2019 7:00 AM T 0.0 M 0.0 M low ovc at sunrise, partial clearing by mid-morning, then mo cldy aftn mid-aftn with RW-. Thunder SE late aftn.
5/28/2019 7:00 AM 0.35 0.0 M 0.0 M Low ovc set in mid-am, partly sunny pm w/nearby TRW - svr to E. A few drops mid-early-am, TRWU (probably some +) shortly before dawn. Mo sunny at obs time.
5/29/2019 7:00 AM 0.07 0.0 M 0.0 M aftn TRWU .03"; evening RW- .04"
5/30/2019 7:00 AM 0.00 0.0 M 0.0 M
5/31/2019 7:00 AM T 0.0 M 0.0 M a brief light shower early eve
6/1/2019 7:00 AM 0.01 0.0 M 0.0 M late-aftn RW-- (T), mid-eve RW- (.01")
6/2/2019 7:00 AM T 0.0 M 0.0 M a very light midday shower
6/3/2019 7:00 AM 0.09 0.0 M 0.0 M a couple of mid-aftn thunderstorms
6/4/2019 7:00 AM T 0.0 M 0.0 M three light showers, mid-day through late aftn; thunder with the last one
6/5/2019 7:00 AM T 0.0 M 0.0 M mid-aftn RWU
6/6/2019 5:00 AM 0.24 0.0 M 0.0 M light shower late aftn (T), thunder N ca 1900, then TRW- with a period of TRW
6/17/2019 7:00 AM 0.18 0.0 M 0.0 M mid-aftn TRWU(.12) + late-evening RW- (with some lightning both W & E)
6/18/2019 7:00 AM 0.13 0.0 M 0.0 M thundershower mid-aftn
6/19/2019 7:00 AM 0.02 0.0 M 0.0 M a couple of light afternoon showers (.01"), and one not long after sunrise (.01")
6/20/2019 7:00 AM 0.00 0.0 M 0.0 M
6/21/2019 7:00 AM T 0.0 M 0.0 M a very light aftn thundershower and a light eve shower
6/22/2019 7:00 AM 0.66 0.0 M 0.0 M About 90 min RW- early aftn, temp fell to 50s. Showers late aftn/eve, no accum. Some ltg W mid-eve, then R- began late eve. About 20 min of R when an apparent-from-radar NE surge passed before sunrise. Min 46F.
6/23/2019 7:00 AM 0.33 0.0 M 0.0 M most rain in a short but heavy late-aftn thundershower, with a little 1/8" hail at the start. Cloudy and chilly - 61F max, 42F min.
6/24/2019 7:00 AM 0.01 0.0 M 0.0 M RW- early aftn, then a few drops off & on until mid-aftn, when skies cleared and temps rose into mid 60s (still, of course, quite cool for late June)
6/25/2019 7:00 AM 0.00 0.0 M 0.0 M
6/26/2019 7:00 AM T 0.0 M 0.0 M RW-- late aftn
6/27/2019 7:00 AM 0.00 0.0 M 0.0 M
6/28/2019 7:00 AM 0.00 0.0 M 0.0 M
6/29/2019 7:00 AM 0.00 0.0 M 0.0 M
6/30/2019 7:00 AM 0.00 0.0 M 0.0 M
7/1/2019 7:00 AM 0.06 0.0 M 0.0 M early evening thundershower .05"; late evening shower (.01"), radar indicated another very light shower after midnight
7/2/2019 7:00 AM 0.21 0.0 M 0.0 M a brief mid-aftn TRW- (T), another TRW- early eve (.01"), then TRW-/TRW 2020-2250.
7/3/2019 7:00 AM 0.00 0.0 M 0.0 M
7/4/2019 7:00 AM T 0.0 M 0.0 M a few drops early evening
7/5/2019 7:00 AM 0.42 0.0 M 0.0 M evening/late evening thundershowers
7/6/2019 7:00 AM 0.67 0.0 M 0.0 M Storms began late aftn S, with lots of wx radio action. First drops 1917L, picked up about 20 min later with some small hail. Within a couple of minutes, began getting some large hailstones, 3/4"-1" with several 1.5" and a few 1 3/4" spheres. Found one egg-shaped stone after with 1.5" small axis, 2.2" long axis. Considerable twig fall.
7/7/2019 7:00 AM 0.00 0.0 M 0.0 M
7/8/2019 7:00 AM 0.56 0.0 M 0.0 M Mostly sunny until late aftn. Gusty outflow from earlier storms in southern Denver suburbs blew through about 5:35, kicking up a heavy shower that dumped .54" in 25 minutes. Didn't hear thunder until a few minutes after the rain started. There a smattering of 1/4" hail and then 1/8" & 1/4" the first six minutes.
7/9/2019 7:00 AM T 0.0 M 0.0 M a few big drops from an early-eve developing shower
7/10/2019 7:00 AM 0.00 0.0 M 0.0 M
7/11/2019 7:00 AM 0.00 0.0 M 0.0 M
7/12/2019 7:00 AM 0.00 0.0 M 0.0 M Sunny early, then high ovc by late aftn, and thundershowers in the area evening. Temp dropped only to 80F mid-eve, then rose on gusty winds - 84F at 10 pm. Very unusual for this area.
7/13/2019 7:00 AM 0.00 0.0 M 0.0 M
7/14/2019 7:00 AM 0.01 0.0 M 0.0 M a light early-evening shower, followed by lots of lightning & thunder SW-S-E-NE
7/15/2019 7:00 AM 0.02 0.0 M 0.0 M Thundershowers in area for about 2 1/2 hours early to mid aftn, ending with a light shower. Light rain beginning mid-eve.
7/16/2019 7:00 AM 0.01 0.0 M 0.0 M a few mid-aftn drops, temp fell to low 70s from 91F at noon, then a light shower early evening
7/17/2019 7:00 AM 0.11 0.0 M 0.0 M Thundershowers mid and late aftn (ca 1300 and 1730). Another isolated thundershower early am, with bright moonlight & Jupiter visible (.06"). (Storm showed on kftg radar at least from Summit County at 23L to dissipation over Morgan County at 03L.)
7/18/2019 7:00 AM 0.00 0.0 M 0.0 M
7/19/2019 7:00 AM 0.00 0.0 M 0.0 M
7/20/2019 7:00 AM 0.00 0.0 M 0.0 M
7/21/2019 7:00 AM 0.17 0.0 M 0.0 M two mid-aftn light thundershowers (T, .03"), then another with moderate rain early evening
7/22/2019 7:00 AM 0.83 0.0 M 0.0 M Got .01" from a brief early-evening shower. There was a nice light show W-SW starting mid-evening, and it looked like everything was moving off to the south, then we got a quick dump from 2200-2310/.82".
7/23/2019 7:00 AM 0.00 0.0 M 0.0 M
7/24/2019 7:00 AM 0.00 0.0 M 0.0 M
7/25/2019 7:00 AM 0.16 0.0 M 0.0 M late-aftn thundershower
7/26/2019 7:00 AM T 0.0 M 0.0 M mostly cloudy with a brief afternoon shower
7/27/2019 7:00 AM 0.00 0.0 M 0.0 M
7/28/2019 7:00 AM 0.02 0.0 M 0.0 M
7/29/2019 7:00 AM 0.00 0.0 M 0.0 M
7/30/2019 7:00 AM 0.00 0.0 M 0.0 M
7/31/2019 7:00 AM 0.11 0.0 M 0.0 M Mo cldy - high thin clouds am. Sunny period mid-day, then thunder S late aftn, followed by a brief RW- (T). TRW- late aftn - early eve .11".
8/1/2019 7:00 AM 0.09 0.0 M 0.0 M mid-evening TRW-, with a good lightning show before and after
8/2/2019 7:00 AM 0.11 0.0 M 0.0 M Ovc until mid-morning, then sun until showers approached from W early aftn. Showers mid-aftn (.05") and late evening (.06").
8/3/2019 7:00 AM T 0.0 M 0.0 M RWU late afternoon
8/4/2019 7:00 AM 0.00 0.0 M 0.0 M
8/5/2019 7:00 AM T 0.0 M 0.0 M Overcast with passing showers. Some very light rain mid to late evening.
8/6/2019 7:00 AM T 0.0 M 0.0 M two brief & very light afternoon/early evening showers
8/7/2019 7:00 AM 0.00 0.0 M 0.0 M
8/8/2019 7:00 AM 0.30 0.0 M 0.0 M Mostly cloudy pm with most showers coming off mountains dissipating over plains. Thundershower developed just NW and doused us with a quick mid-evening dump. Good lightning show.
8/9/2019 7:00 AM 0.05 0.0 M 0.0 M afternoon/early evening showers/thundershowers
8/10/2019 7:00 AM 0.00 0.0 M 0.0 M nice lightning show NE late evening
8/11/2019 7:00 AM T 0.0 M 0.0 M very light shower early evening
8/12/2019 7:00 AM T 0.0 M 0.0 M a few mid-aftn drops
8/13/2019 7:00 AM 0.00 0.0 M 0.0 M
8/14/2019 7:00 AM 0.00 0.0 M 0.0 M great lightning show and distant thunder N-NE late evening
8/15/2019 7:00 AM 0.00 0.0 M 0.0 M
8/16/2019 7:00 AM 0.00 0.0 M 0.0 M
8/17/2019 7:00 AM 0.00 0.0 M 0.0 M
8/18/2019 7:00 AM T 0.0 M 0.0 M brief afternoon thundershower
8/19/2019 7:00 AM 0.00 0.0 M 0.0 M
8/20/2019 7:00 AM 0.00 0.0 M 0.0 M
8/21/2019 7:00 AM 0.00 0.0 M 0.0 M
8/22/2019 7:00 AM T 0.0 M 0.0 M very light thundershowers late aftn through mid-eve
8/23/2019 7:00 AM T 0.0 M 0.0 M showers in area afternoon/early evening
8/24/2019 7:00 AM T 0.0 M 0.0 M a light rain shower late aftn
8/25/2019 7:00 AM 0.00 0.0 M 0.0 M
8/26/2019 7:00 AM 0.00 0.0 M 0.0 M
8/27/2019 7:00 AM 0.00 0.0 M 0.0 M
8/28/2019 7:00 AM 0.00 0.0 M 0.0 M
8/29/2019 7:00 AM 0.00 0.0 M 0.0 M
8/30/2019 7:00 AM 0.00 0.0 M 0.0 M
8/31/2019 7:00 AM T 0.0 M 0.0 M showers in area late aftn/early eve; brief RW-- here
9/1/2019 7:00 AM 0.00 0.0 M 0.0 M
9/2/2019 7:00 AM 0.00 0.0 M 0.0 M
9/3/2019 7:00 AM 0.00 0.0 M 0.0 M
9/4/2019 7:00 AM 0.00 0.0 M 0.0 M
9/5/2019 7:00 AM T 0.0 M 0.0 M a brief mid-afternoon thundershower
9/6/2019 7:00 AM T 0.0 M 0.0 M mostly cloudy mid-aftn into evening, with a brief TRW--
9/7/2019 7:00 AM 0.07 0.0 M 0.0 M Aftn/early evening thundershowers. First measurable precip since 8 Aug.
9/8/2019 7:00 AM 0.00 0.0 M 0.0 M
9/9/2019 7:00 AM 0.27 0.0 M 0.0 M Thundershowers developed mid-afternoon and continued until midnight. Heavy showers 1652-1657 and 2245-2255. The latter featured a nearby lightning strike that briefly knocked out power.
9/10/2019 7:00 AM 0.00 0.0 M 0.0 M
9/11/2019 7:00 AM 0.00 0.0 M 0.0 M
9/12/2019 7:00 AM 0.01 0.0 M 0.0 M A few afternoon and evening thundershowers. Last one had some 1/8" hail and enough rain to measure.
9/13/2019 7:00 AM 0.00 0.0 M 0.0 M
9/14/2019 7:00 AM 0.00 0.0 M 0.0 M
9/15/2019 7:00 AM 0.00 0.0 M 0.0 M
9/16/2019 7:00 AM 0.00 0.0 M 0.0 M
9/17/2019 7:00 AM 0.00 0.0 M 0.0 M
9/18/2019 7:00 AM 0.00 0.0 M 0.0 M
9/19/2019 7:00 AM T 0.0 M 0.0 M a couple of very light aftn/eve showers
9/20/2019 7:00 AM 0.00 0.0 M 0.0 M
9/21/2019 7:00 AM 0.00 0.0 M 0.0 M
9/22/2019 7:00 AM 0.01 0.0 M 0.0 M a couple of light evening showers
9/23/2019 7:00 AM 0.00 0.0 M 0.0 M
9/24/2019 7:00 AM 0.00 0.0 M 0.0 M
9/25/2019 7:00 AM 0.00 0.0 M 0.0 M
9/26/2019 7:00 AM 0.00 0.0 M 0.0 M
9/27/2019 7:00 AM 0.00 0.0 M 0.0 M
9/28/2019 7:00 AM 0.03 0.0 M 0.0 M evening showers
9/29/2019 7:00 AM 0.00 0.0 M 0.0 M light fog near sunrise
9/30/2019 7:00 AM 0.00 0.0 M 0.0 M windy & very warm afternoon



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
7/5/2019 7:41 PM Several large twigs broken off trees, thick leaf litter on the ground. Probable shingle damage, though not obvious pending a close inspection. Will have to survey neighbors re car dents - ours fortunately in garage! 1 3/4" Golf Ball Size 7/8" Nickel Size 1/4" Pea Size Hard|White Ice 20 1min shredded leaves Continuous True After rain After smaller hail 10-20