Station Overview Station Location
Station Number CO-BO-146 Latitude 40.226333
Station Name Lyons 0.3 NNE Longitude -105.266667
County Boulder Elevation (ft) 5399



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 12 1.07 1.09 31 1.09 31 0.00 0 0 8 2 5.8 3 3
Nov 12 0.86 0.18 30 0.18 30 0.00 0 0 1 1 0.6 1 0
Dec 12 0.50 0.22 31 0.22 31 0.00 0 0 4 3 3.6 5 7
Jan 13 0.48 0.17 31 0.17 31 0.00 0 0 3 3 2.5 4 11
Feb 13 0.56 0.65 28 0.65 28 0.00 0 0 8 1 8.6 8 9
March 13 1.57 1.13 31 1.13 31 0.00 0 0 6 4 13.0 6 10
April 13 2.00 3.31 30 3.31 30 0.00 0 0 11 3 28.5 7 9
May 13 2.48 2.95 31 2.95 31 0.00 0 0 10 4 5.4 2 2
June 13 2.26 0.80 30 0.80 30 0.00 0 0 3 8 0.0 0 0
July 13 1.72 0.99 31 0.99 31 0.00 0 0 14 3 0.0 0 0
Aug 13 1.41 1.67 31 1.67 31 0.00 0 0 12 6 0.0 0 0
Sept 13 1.57 10.18 30 10.18 30 0.00 0 0 13 1 0.0 0 0
Water Year Totals: 16.48" 23.34" 365 days 23.34" 365 0.00" 0 days 0 93 days 39 days 68.0" 36 days 51 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
10/1/2012 0.05
10/2/2012 0.00
10/3/2012 0.00
10/4/2012 0.00
10/5/2012 0.05
10/6/2012 0.10
10/7/2012 0.03
10/8/2012 0.00
10/9/2012 0.00
10/10/2012 0.00
10/11/2012 0.00
10/12/2012 0.00
10/13/2012 0.02
10/14/2012 0.12
10/15/2012 0.00
10/16/2012 0.00
10/17/2012 T
10/18/2012 0.00
10/19/2012 0.00
10/20/2012 0.00
10/21/2012 0.00
10/22/2012 0.00
10/23/2012 0.00
10/24/2012 0.00
10/25/2012 0.43
10/26/2012 0.29
10/27/2012 T
10/28/2012 0.00
10/29/2012 0.00
10/30/2012 0.00
10/31/2012 0.00
11/1/2012 0.00
11/2/2012 0.00
11/3/2012 0.00
11/4/2012 0.00
11/5/2012 0.00
11/6/2012 0.00
11/7/2012 0.00
11/8/2012 0.00
11/9/2012 0.00
11/10/2012 0.00
11/11/2012 0.18
11/12/2012 0.00
11/13/2012 0.00
11/14/2012 0.00
11/15/2012 0.00
11/16/2012 0.00
11/17/2012 0.00
11/18/2012 0.00
11/19/2012 0.00
11/20/2012 0.00
11/21/2012 0.00
11/22/2012 0.00
11/23/2012 0.00
11/24/2012 0.00
11/25/2012 0.00
11/26/2012 0.00
11/27/2012 T
11/28/2012 0.00
11/29/2012 0.00
11/30/2012 0.00
12/1/2012 0.00
12/2/2012 0.00
12/3/2012 0.00
12/4/2012 0.00
12/5/2012 0.00
12/6/2012 0.00
12/7/2012 T
12/8/2012 0.00
12/9/2012 0.00
12/10/2012 0.00
12/11/2012 T
12/12/2012 0.00
12/13/2012 0.00
12/14/2012 0.00
12/15/2012 0.00
12/16/2012 0.00
12/17/2012 0.00
12/18/2012 0.00
12/19/2012 0.02
12/20/2012 0.01
12/21/2012 0.00
12/22/2012 0.00
12/23/2012 0.00
12/24/2012 0.00
12/25/2012 0.17
12/26/2012 T
12/27/2012 0.00
12/28/2012 0.02
12/29/2012 0.00
12/30/2012 0.00
12/31/2012 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2013 T
1/2/2013 0.00
1/3/2013 0.00
1/4/2013 0.00
1/5/2013 0.00
1/6/2013 0.00
1/7/2013 0.00
1/8/2013 0.00
1/9/2013 0.00
1/10/2013 0.00
1/11/2013 0.00
1/12/2013 T
1/13/2013 0.02
1/14/2013 0.01
1/15/2013 0.00
1/16/2013 0.00
1/17/2013 0.00
1/18/2013 0.00
1/19/2013 0.00
1/20/2013 0.00
1/21/2013 0.00
1/22/2013 0.00
1/23/2013 0.00
1/24/2013 0.00
1/25/2013 0.00
1/26/2013 0.00
1/27/2013 T
1/28/2013 0.00
1/29/2013 0.14
1/30/2013 0.00
1/31/2013 0.00
2/1/2013 0.00
2/2/2013 0.00
2/3/2013 0.00
2/4/2013 0.00
2/5/2013 0.00
2/6/2013 0.00
2/7/2013 T
2/8/2013 0.00
2/9/2013 0.00
2/10/2013 0.01
2/11/2013 0.03
2/12/2013 0.00
2/13/2013 0.00
2/14/2013 0.00
2/15/2013 0.03
2/16/2013 0.00
2/17/2013 0.00
2/18/2013 0.00
2/19/2013 0.00
2/20/2013 0.00
2/21/2013 0.20
2/22/2013 0.06
2/23/2013 0.00
2/24/2013 0.07
2/25/2013 0.11
2/26/2013 0.00
2/27/2013 0.14
2/28/2013 0.00
3/1/2013 0.00
3/2/2013 0.00
3/3/2013 0.00
3/4/2013 0.00
3/5/2013 0.12
3/6/2013 0.00
3/7/2013 0.00
3/8/2013 0.00
3/9/2013 0.13
3/10/2013 0.19
3/11/2013 0.00
3/12/2013 0.22
3/13/2013 T
3/14/2013 0.00
3/15/2013 0.00
3/16/2013 0.00
3/17/2013 0.00
3/18/2013 T
3/19/2013 0.00
3/20/2013 0.00
3/21/2013 0.00
3/22/2013 0.00
3/23/2013 0.33
3/24/2013 0.14
3/25/2013 T
3/26/2013 0.00
3/27/2013 0.00
3/28/2013 0.00
3/29/2013 0.00
3/30/2013 0.00
3/31/2013 T
Day of YearDaily PrcpMultiday Prcp
4/1/2013 0.00
4/2/2013 0.04
4/3/2013 0.28
4/4/2013 0.00
4/5/2013 0.00
4/6/2013 T
4/7/2013 0.00
4/8/2013 0.00
4/9/2013 0.16
4/10/2013 0.14
4/11/2013 0.00
4/12/2013 T
4/13/2013 0.00
4/14/2013 0.17
4/15/2013 0.07
4/16/2013 1.02
4/17/2013 0.27
4/18/2013 0.21
4/19/2013 0.00
4/20/2013 0.00
4/21/2013 T
4/22/2013 0.00
4/23/2013 0.93
4/24/2013 0.02
4/25/2013 0.00
4/26/2013 0.00
4/27/2013 0.00
4/28/2013 0.00
4/29/2013 0.00
4/30/2013 0.00
5/1/2013 0.78
5/2/2013 0.38
5/3/2013 0.00
5/4/2013 0.00
5/5/2013 0.00
5/6/2013 T
5/7/2013 0.00
5/8/2013 0.89
5/9/2013 0.47
5/10/2013 0.13
5/11/2013 T
5/12/2013 0.01
5/13/2013 0.00
5/14/2013 0.00
5/15/2013 0.00
5/16/2013 0.00
5/17/2013 0.00
5/18/2013 0.00
5/19/2013 0.00
5/20/2013 0.01
5/21/2013 0.03
5/22/2013 0.00
5/23/2013 0.06
5/24/2013 0.00
5/25/2013 0.00
5/26/2013 0.00
5/27/2013 T
5/28/2013 0.00
5/29/2013 T
5/30/2013 0.19
5/31/2013 0.00
6/1/2013 0.00
6/2/2013 0.00
6/3/2013 0.00
6/4/2013 0.00
6/5/2013 0.05
6/6/2013 0.01
6/7/2013 T
6/8/2013 T
6/9/2013 0.00
6/10/2013 0.00
6/11/2013 T
6/12/2013 0.00
6/13/2013 0.00
6/14/2013 T
6/15/2013 0.00
6/16/2013 T
6/17/2013 T
6/18/2013 T
6/19/2013 T
6/20/2013 0.00
6/21/2013 0.00
6/22/2013 0.00
6/23/2013 0.00
6/24/2013 0.00
6/25/2013 0.00
6/26/2013 0.00
6/27/2013 0.00
6/28/2013 0.00
6/29/2013 0.74
6/30/2013 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2013 0.03
7/2/2013 0.03
7/3/2013 0.00
7/4/2013 T
7/5/2013 0.00
7/6/2013 0.08
7/7/2013 0.02
7/8/2013 0.15
7/9/2013 0.18
7/10/2013 0.00
7/11/2013 0.00
7/12/2013 0.00
7/13/2013 0.08
7/14/2013 0.02
7/15/2013 T
7/16/2013 0.00
7/17/2013 0.00
7/18/2013 0.00
7/19/2013 0.10
7/20/2013 0.00
7/21/2013 0.01
7/22/2013 0.00
7/23/2013 0.00
7/24/2013 0.00
7/25/2013 0.06
7/26/2013 0.03
7/27/2013 0.00
7/28/2013 T
7/29/2013 0.07
7/30/2013 0.13
7/31/2013 0.00
8/1/2013 0.11
8/2/2013 0.05
8/3/2013 0.00
8/4/2013 0.54
8/5/2013 0.00
8/6/2013 0.01
8/7/2013 T
8/8/2013 0.00
8/9/2013 0.03
8/10/2013 0.00
8/11/2013 0.07
8/12/2013 T
8/13/2013 0.67
8/14/2013 0.02
8/15/2013 0.00
8/16/2013 T
8/17/2013 0.00
8/18/2013 0.00
8/19/2013 T
8/20/2013 0.00
8/21/2013 0.00
8/22/2013 0.00
8/23/2013 0.08
8/24/2013 0.01
8/25/2013 0.02
8/26/2013 0.00
8/27/2013 0.06
8/28/2013 0.00
8/29/2013 0.00
8/30/2013 T
8/31/2013 T
9/1/2013 0.03
9/2/2013 0.00
9/3/2013 0.00
9/4/2013 T
9/5/2013 0.00
9/6/2013 0.00
9/7/2013 0.00
9/8/2013 0.00
9/9/2013 0.00
9/10/2013 1.11
9/11/2013 0.52
9/12/2013 3.64
9/13/2013 2.38
9/14/2013 0.04
9/15/2013 0.04
9/16/2013 1.69
9/17/2013 0.02
9/18/2013 0.00
9/19/2013 0.06
9/20/2013 0.00
9/21/2013 0.00
9/22/2013 0.00
9/23/2013 0.33
9/24/2013 0.00
9/25/2013 0.01
9/26/2013 0.00
9/27/2013 0.00
9/28/2013 0.31
9/29/2013 0.00
9/30/2013 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2012 7:00 AM 0.05 M M M M 0.03" from afternoon shower. 0.02" overnight.
10/2/2012 7:00 AM 0.00 0.0 M M M
10/3/2012 7:00 AM 0.00 0.0 M M M
10/4/2012 7:00 AM 0.00 0.0 M M M
10/5/2012 6:00 AM 0.05 1.1 M M M Overnight snow.. looks like it's getting lighter.
10/6/2012 7:00 AM 0.10 M M M M Light freezing rain. Current/low temp 32F.
10/7/2012 7:00 AM 0.03 T M 0.0 M Mostly drizzle. A few flurries.
10/8/2012 7:00 AM 0.00 0.0 M M M
10/9/2012 7:00 AM 0.00 0.0 M M M
10/10/2012 7:00 AM 0.00 0.0 M M M
10/11/2012 7:00 AM 0.00 0.0 M M M
10/12/2012 7:00 AM 0.00 0.0 M M M
10/13/2012 7:00 AM 0.02 M M M M Overnight approx 0.02". Trace showers in the afternoon.
10/14/2012 7:00 AM 0.12 M M M M
10/15/2012 7:00 AM 0.00 0.0 M M M
10/16/2012 7:00 AM 0.00 0.0 M M M
10/17/2012 7:00 AM T M M M M
10/18/2012 7:00 AM 0.00 0.0 M M M
10/19/2012 7:00 AM 0.00 0.0 M M M
10/20/2012 7:00 AM 0.00 0.0 M M M
10/21/2012 7:00 AM 0.00 0.0 M M M
10/22/2012 7:00 AM 0.00 0.0 M M M
10/23/2012 7:00 AM 0.00 0.0 M M M
10/24/2012 7:00 AM 0.00 0.0 M M M
10/25/2012 7:00 AM 0.43 2.3 M 2.0 M 0.18" fell as rain until approximately 8:15pm when it changed to snow. 0.25" water from the 2.3" snow. Current temp 29F.
10/26/2012 7:00 AM 0.29 2.4 M 3.0 M Snow stopped during the middle of the day, resuming late afternoon. Snowfall over by 5am.
10/27/2012 7:00 AM T T M 2.0 M
10/28/2012 7:00 AM 0.00 0.0 M T M
10/29/2012 7:00 AM 0.00 0.0 M 0.0 M
10/30/2012 7:00 AM 0.00 0.0 M 0.0 M
10/31/2012 7:00 AM 0.00 0.0 M 0.0 M
11/1/2012 7:00 AM 0.00 0.0 M 0.0 M
11/2/2012 7:00 AM 0.00 0.0 M 0.0 M
11/3/2012 7:00 AM 0.00 0.0 M 0.0 M
11/4/2012 7:00 AM 0.00 0.0 M 0.0 M
11/5/2012 7:00 AM 0.00 0.0 M 0.0 M
11/6/2012 7:00 AM 0.00 0.0 M 0.0 M
11/7/2012 7:00 AM 0.00 0.0 M 0.0 M
11/8/2012 7:00 AM 0.00 0.0 M 0.0 M
11/9/2012 7:00 AM 0.00 0.0 M 0.0 M
11/10/2012 7:00 AM 0.00 0.0 M 0.0 M
11/11/2012 7:00 AM 0.18 0.6 M T M Rain changing to snow midday. A little snow (0.4") again overnight. Overnight low 17F.
11/12/2012 7:00 AM 0.00 0.0 M T M
11/13/2012 7:00 AM 0.00 0.0 M T M
11/14/2012 7:00 AM 0.00 0.0 M 0.0 M
11/15/2012 7:00 AM 0.00 0.0 M 0.0 M
11/16/2012 7:00 AM 0.00 0.0 M 0.0 M
11/17/2012 7:00 AM 0.00 0.0 M 0.0 M
11/18/2012 7:00 AM 0.00 0.0 M 0.0 M
11/19/2012 7:00 AM 0.00 0.0 M 0.0 M
11/20/2012 7:00 AM 0.00 0.0 M 0.0 M
11/21/2012 7:00 AM 0.00 0.0 M 0.0 M
11/22/2012 7:00 AM 0.00 0.0 M 0.0 M High in the low 70s.
11/23/2012 7:00 AM 0.00 0.0 M 0.0 M
11/24/2012 7:00 AM 0.00 0.0 M 0.0 M
11/25/2012 7:00 AM 0.00 0.0 M 0.0 M
11/26/2012 7:00 AM 0.00 0.0 M 0.0 M
11/27/2012 7:00 AM T T M 0.0 M Rain, freezing rain, some flurries 8am - 1pm. Daytime high around 28-30F. Fairly heavy frost this morning.
11/28/2012 7:00 AM 0.00 0.0 M 0.0 M
11/29/2012 7:00 AM 0.00 0.0 M 0.0 M
11/30/2012 7:00 AM 0.00 0.0 M 0.0 M
12/1/2012 7:00 AM 0.00 0.0 M 0.0 M
12/2/2012 7:00 AM 0.00 0.0 M 0.0 M
12/3/2012 7:00 AM 0.00 0.0 M 0.0 M Between 7 and 8pm winds picked up, buoying the temps from 46F to 61F. Overnight temps winds kept temps in the 50-60F range.
12/4/2012 7:00 AM 0.00 0.0 M 0.0 M
12/5/2012 7:00 AM 0.00 0.0 M 0.0 M
12/6/2012 7:00 AM 0.00 0.0 M 0.0 M
12/7/2012 7:00 AM T M M 0.0 M
12/8/2012 7:00 AM 0.00 0.0 M 0.0 M
12/9/2012 7:00 AM 0.00 0.0 M 0.0 M
12/10/2012 7:00 AM 0.00 0.0 M 0.0 M
12/11/2012 7:00 AM T T M T M Tiny trace of snow overnight.
12/12/2012 7:00 AM 0.00 0.0 M 0.0 M
12/13/2012 7:00 AM 0.00 0.0 M 0.0 M
12/14/2012 7:00 AM 0.00 0.0 M 0.0 M
12/15/2012 7:00 AM 0.00 0.0 M 0.0 M
12/16/2012 7:00 AM 0.00 0.0 M 0.0 M
12/17/2012 7:00 AM 0.00 0.0 M 0.0 M
12/18/2012 7:00 AM 0.00 0.0 M 0.0 M
12/19/2012 6:00 AM 0.02 0.5 M 0.5 M light snowfall 5:30pm to 6:30pm, leaving approx 0.2" snow. snow resumed overnight..this morning still snowy and windy.
12/20/2012 7:00 AM 0.01 0.1 M T M
12/21/2012 7:00 AM 0.00 0.0 M T M
12/22/2012 7:00 AM 0.00 0.0 M T M
12/23/2012 7:00 AM 0.00 0.0 M 0.0 M
12/24/2012 7:00 AM 0.00 0.0 M 0.0 M
12/25/2012 7:00 AM 0.17 2.6 M 2.5 M Overnight 9F. Still very lightly snowing.
12/26/2012 7:00 AM T 0.2 M 2.5 M
12/27/2012 7:00 AM 0.00 0.0 M M M
12/28/2012 7:00 AM 0.02 0.2 M 2.0 M
12/29/2012 7:00 AM 0.00 0.0 M 2.0 M
12/30/2012 7:00 AM 0.00 0.0 M 1.5 M
12/31/2012 7:00 AM 0.00 0.0 M 1.5 M
1/1/2013 7:00 AM T 0.1 M 1.0 M
1/2/2013 7:00 AM 0.00 0.0 M 1.0 M
1/3/2013 7:00 AM 0.00 0.0 M 1.0 M
1/4/2013 7:00 AM 0.00 0.0 M 1.0 M
1/5/2013 7:00 AM 0.00 0.0 M 0.5 M
1/6/2013 7:00 AM 0.00 0.0 M 0.5 M
1/7/2013 7:00 AM 0.00 0.0 M 0.5 M
1/8/2013 7:00 AM 0.00 0.0 M T M
1/9/2013 7:00 AM 0.00 0.0 M T M
1/10/2013 7:00 AM 0.00 0.0 M T M
1/11/2013 7:00 AM 0.00 0.0 M T M
1/12/2013 7:00 AM T T M T M Some flakes during the day. A dusting of snow overnight.
1/13/2013 7:00 AM 0.02 0.2 M T M Light snow off and on. Overnight -1F.
1/14/2013 7:00 AM 0.01 0.1 M 0.2 M
1/15/2013 7:00 AM 0.00 0.0 M T M
1/16/2013 7:00 AM 0.00 0.0 M T M
1/17/2013 7:00 AM 0.00 0.0 M T M
1/18/2013 7:00 AM 0.00 0.0 M 0.0 M
1/19/2013 7:00 AM 0.00 0.0 M T M Overnight temps lifted to 48F. 29F at dawn.
1/20/2013 7:00 AM 0.00 0.0 M 0.0 M High around 60F.
1/21/2013 7:00 AM 0.00 0.0 M 0.0 M
1/22/2013 7:00 AM 0.00 0.0 M 0.0 M
1/23/2013 7:00 AM 0.00 0.0 M 0.0 M
1/24/2013 7:00 AM 0.00 0.0 M 0.0 M
1/25/2013 7:00 AM 0.00 0.0 M 0.0 M
1/26/2013 7:00 AM 0.00 0.0 M 0.0 M
1/27/2013 7:00 AM T M M 0.0 M A bit of rain.
1/28/2013 7:00 AM 0.00 0.0 M 0.0 M
1/29/2013 7:00 AM 0.14 2.1 M 2.0 M
1/30/2013 7:00 AM 0.00 0.0 M 1.5 M
1/31/2013 7:00 AM 0.00 0.0 M 0.5 M
2/1/2013 7:00 AM 0.00 0.0 M T M
2/2/2013 7:00 AM 0.00 0.0 M T M
2/3/2013 7:00 AM 0.00 0.0 M T M
2/4/2013 7:00 AM 0.00 0.0 M 0.0 M
2/5/2013 7:00 AM 0.00 0.0 M 0.0 M
2/6/2013 7:00 AM 0.00 0.0 M 0.0 M
2/7/2013 7:00 AM T M M 0.0 M Rain.
2/8/2013 7:00 AM 0.00 0.0 M 0.0 M
2/9/2013 7:00 AM 0.00 0.0 M 0.0 M
2/10/2013 7:00 AM 0.01 0.2 M T M Some flurries midday. A little snow later around nightfall.
2/11/2013 7:00 AM 0.03 0.8 M 1.0 M
2/12/2013 7:00 AM 0.00 0.0 M T M
2/13/2013 7:00 AM 0.00 0.0 M T M
2/14/2013 7:00 AM 0.00 0.0 M 0.0 M
2/15/2013 7:00 AM 0.03 0.5 M M M
2/16/2013 7:00 AM 0.00 0.0 M M M
2/17/2013 7:00 AM 0.00 0.0 M 0.0 M
2/18/2013 7:00 AM 0.00 0.0 M 0.0 M
2/19/2013 7:00 AM 0.00 0.0 M M M
2/20/2013 7:00 AM 0.00 0.0 M 0.0 M
2/21/2013 6:00 AM 0.20 1.8 M 2.0 M
2/22/2013 7:00 AM 0.06 0.2 M 2.0 M
2/23/2013 7:00 AM 0.00 0.0 M 1.5 M
2/24/2013 7:00 AM 0.07 1.7 M 2.0 M Snow starting very late and continuing this morning. 28F
2/25/2013 7:00 AM 0.11 2.0 M 3.0 M
2/26/2013 7:00 AM 0.00 0.0 M 2.0 M
2/27/2013 7:00 AM 0.14 1.4 M 2.5 M
2/28/2013 7:00 AM 0.00 0.0 M 1.0 M
3/1/2013 7:00 AM 0.00 0.0 M 1.5 M
3/2/2013 7:00 AM 0.00 0.0 M 1.5 M
3/3/2013 7:00 AM 0.00 0.0 M T M
3/4/2013 7:00 AM 0.00 0.0 M T M
3/5/2013 7:00 AM 0.12 1.3 M 1.0 M Afternoon snow.
3/6/2013 7:00 AM 0.00 0.0 M T M
3/7/2013 7:00 AM 0.00 0.0 M T M
3/8/2013 7:00 AM 0.00 0.0 M 0.0 M
3/9/2013 7:00 AM 0.13 1.3 M 1.5 M Snowfall began lightly between 4 and 4:30am. Began sticking on the roads around 6am. Looks heavier now. Temps around 32.5F.
3/10/2013 7:00 AM 0.19 1.0 M 1.5 M Snowfall heavy in the morning but temps rose to 36F and prohibited a lot of accumulation. Hard to measure accurately how much fell. Snow ending by 3pm.
3/11/2013 7:00 AM 0.00 0.0 M T M
3/12/2013 6:00 AM 0.22 3.0 M M M Snow began as graupel. This morning I noted it was quite small and still granular. Snow continues.
3/13/2013 7:00 AM T T M 1.5 M snow ending mid-morning.
3/14/2013 7:00 AM 0.00 0.0 M T M
3/15/2013 7:00 AM 0.00 0.0 M T M
3/16/2013 7:00 AM 0.00 0.0 M 0.0 M
3/17/2013 7:00 AM 0.00 0.0 M 0.0 M
3/18/2013 7:00 AM T 0.0 M 0.0 M
3/19/2013 7:00 AM 0.00 0.0 M 0.0 M
3/20/2013 7:00 AM 0.00 0.0 M 0.0 M
3/21/2013 7:00 AM 0.00 0.0 M 0.0 M
3/22/2013 7:00 AM 0.00 0.0 M 0.0 M
3/23/2013 7:00 AM 0.33 4.4 M 4.5 M 2" snow by 8pm. 4.4" by 7am. Light snow continues. Low and current temp 21F.
3/24/2013 7:00 AM 0.14 2.0 M 5.5 M Light snow throughout the day until late afternoon. Very cold overnight, low temp 3F.
3/25/2013 7:00 AM T T M 4.0 M Overnight a little snow
3/26/2013 7:00 AM 0.00 0.0 M 2.0 M
3/27/2013 7:00 AM 0.00 0.0 M T M
3/28/2013 7:00 AM 0.00 0.0 M T M
3/29/2013 7:00 AM 0.00 0.0 M 0.0 M
3/30/2013 7:00 AM 0.00 0.0 M 0.0 M
3/31/2013 7:00 AM T M M 0.0 M Light shower near sunset.
4/1/2013 7:00 AM 0.00 0.0 M 0.0 M
4/2/2013 7:00 AM 0.04 0.0 M 0.0 M Light rain early evening.
4/3/2013 7:00 AM 0.28 M M 0.0 M Rain with some snow flakes, 0.22" by 6pm. Light rain continued overnight for 0.28" total.
4/4/2013 7:00 AM 0.00 0.0 M 0.0 M
4/5/2013 7:00 AM 0.00 0.0 M 0.0 M
4/6/2013 7:00 AM T M M 0.0 M Strong winds and some trace rain last night.
4/7/2013 7:00 AM 0.00 0.0 M 0.0 M
4/8/2013 7:00 AM 0.00 0.0 M 0.0 M
4/9/2013 6:00 AM 0.16 0.6 M T M Some trace showers in the afternoon and early evening. Rain beginning after sunset, changing to snow approximately 9pm. 0.02" collected as rain. Much of the snow was very granular. 0.14" water melted from the 0.6" of snow.
4/10/2013 7:00 AM 0.14 3.8 M 3.0 M Overnight low temp 2.5F.
4/11/2013 7:00 AM 0.00 0.0 M M M
4/12/2013 7:00 AM T M M 0.0 M
4/13/2013 7:00 AM 0.00 0.0 M 0.0 M
4/14/2013 7:00 AM 0.17 0.0 M 0.0 M
4/15/2013 6:00 AM 0.07 1.2 M 1.0 M Snow beginning sometime after 3am, continuing.
4/16/2013 6:00 AM 1.02 12.2 M 12.0 M At 6pm measured 8.8" new snow. Afraid of an undercatch I did a core sample, measuring 0.80" in the 8.8" snow. This matched my gauge reading of 0.79" for that same time period (up to 6pm). 3.4" additional snow overnight. Tiny particles of snow currently falling. It appears some snow compression happened midday as the temps warmed up. Likely more had fallen than I measured.
4/17/2013 6:00 AM 0.27 1.0 M 12.0 M An inch (or previously more) of very granular snow topped off with a coating of freezing rain. Good morning!
4/18/2013 7:00 AM 0.21 2.2 M 12.0 M Measured the 2.2" snow at 7pm. Only a trace more overnight. Skies clearing. Overnight 7F.
4/19/2013 7:00 AM 0.00 0.0 M 8.0 M
4/20/2013 7:00 AM 0.00 0.0 M 3.0 M
4/21/2013 7:00 AM T 0.0 M T M
4/22/2013 7:00 AM 0.00 0.0 M 0.0 M
4/23/2013 6:30 AM 0.93 7.5 M 7.0 M Light snow began approx 11:30am. 7pm reading 3.3" snow with 0.29" water content. 6:30am had an additional 4.2" snow and 0.64" water. Temps in the low 20s. Snow continues.
4/24/2013 7:00 AM 0.02 T M 4.0 M
4/25/2013 7:00 AM 0.00 0.0 M T M
4/26/2013 7:00 AM 0.00 0.0 M 0.0 M
4/27/2013 7:00 AM 0.00 0.0 M 0.0 M
4/28/2013 7:00 AM 0.00 0.0 M 0.0 M
4/29/2013 7:00 AM 0.00 0.0 M 0.0 M
4/30/2013 7:00 AM 0.00 0.0 M 0.0 M
5/1/2013 6:00 AM 0.78 2.8 M 2.5 M Rainfall starting in the evening, 0.23" by 10:30pm. Rain changed to snow sometime between 10:30pm and 12:15am. At 12:15am recorded rain total 0.31" and 0.2" snow with 0.10" water content. 6am reading 2.6" add'l snow with 0.37" water. Snow continues. 32F.
5/2/2013 7:00 AM 0.38 2.6 M 5.0 M Snow all day, ending after dark. 2.1" snow with 0.36" water content by 7pm. Only 0.5" snow fell after that. Overnight low 19F.
5/3/2013 7:00 AM 0.00 0.0 M T M
5/4/2013 7:00 AM 0.00 0.0 M 0.0 M
5/5/2013 7:00 AM 0.00 0.0 M 0.0 M
5/6/2013 7:00 AM T M M 0.0 M
5/7/2013 7:00 AM 0.00 0.0 M 0.0 M
5/8/2013 7:00 AM 0.89 0.0 M 0.0 M 0.14" noted when I got home 6pm from late afternoon showers. Heavy rainstorm starting about 7:45pm with small rice and pea-sized hail intermittent. Hail probably ending about 8pm but hard to tell in heavy rain. 0.46" additional by 8:05pm, 0.61" by 8:15. Slowing, 0.72" at 8:30 and over by 9pm with a total of 0.75" for the evening rainstorm.
5/9/2013 7:00 AM 0.47 M M 0.0 M Arrived home to find 0.26" at 6:30pm, mid rain shower. 8pm 0.33". Rain seemed to stir up again about 9pm. Morning reading 0.47".
5/10/2013 7:00 AM 0.13 M M 0.0 M
5/11/2013 7:00 AM T M M 0.0 M
5/12/2013 7:00 AM 0.01 M M M M A few light showers.
5/13/2013 7:00 AM 0.00 0.0 M 0.0 M
5/14/2013 7:00 AM 0.00 0.0 M 0.0 M
5/15/2013 7:00 AM 0.00 0.0 M 0.0 M
5/16/2013 7:00 AM 0.00 0.0 M M M
5/17/2013 7:00 AM 0.00 0.0 M M M
5/18/2013 7:00 AM 0.00 0.0 M M M
5/19/2013 7:00 AM 0.00 0.0 M M M
5/20/2013 7:00 AM 0.01 M M M M
5/21/2013 7:00 AM 0.03 M M M M
5/22/2013 7:00 AM 0.00 0.0 M M M
5/23/2013 7:00 AM 0.06 M M M M Light rain in the later evening.
5/24/2013 7:00 AM 0.00 0.0 M M M
5/25/2013 7:00 AM 0.00 0.0 M M M
5/26/2013 7:00 AM 0.00 0.0 M M M
5/27/2013 7:00 AM T M M M M
5/28/2013 7:00 AM 0.00 0.0 M M M
5/29/2013 7:00 AM T M M M M
5/30/2013 7:00 AM 0.19 M M M M
5/31/2013 7:00 AM 0.00 0.0 M M M
6/1/2013 7:00 AM 0.00 0.0 M M M
6/2/2013 7:00 AM 0.00 0.0 M M M
6/3/2013 7:00 AM 0.00 0.0 M M M
6/4/2013 7:00 AM 0.00 0.0 M M M
6/5/2013 7:00 AM 0.05 M M M M
6/6/2013 7:00 AM 0.01 M M M M
6/7/2013 7:00 AM T M M M M
6/8/2013 7:00 AM T M M M M
6/9/2013 7:00 AM 0.00 0.0 M M M
6/10/2013 7:00 AM 0.00 0.0 M M M
6/11/2013 7:00 AM T M M M M
6/12/2013 7:00 AM 0.00 0.0 M M M
6/13/2013 7:00 AM 0.00 0.0 M M M
6/14/2013 7:00 AM T M M M M
6/15/2013 7:00 AM 0.00 0.0 M M M
6/16/2013 7:00 AM T M M M M
6/17/2013 7:00 AM T M M M M
6/18/2013 7:00 AM T M M M M
6/19/2013 7:00 AM T M M M M
6/20/2013 7:00 AM 0.00 0.0 M M M
6/21/2013 7:00 AM 0.00 0.0 M M M
6/22/2013 7:00 AM 0.00 0.0 M M M
6/23/2013 7:00 AM 0.00 0.0 M M M
6/24/2013 7:00 AM 0.00 0.0 M M M
6/25/2013 7:00 AM 0.00 0.0 M M M
6/26/2013 7:00 AM 0.00 0.0 M M M
6/27/2013 7:00 AM 0.00 0.0 M M M
6/28/2013 7:00 AM 0.00 0.0 M M M
6/29/2013 7:00 AM 0.74 M M M M Severe hail 7:37pm to 7:48pm with rain. Stones ranged in size 0.25" to 1.25" with most stones being large, producing accumulation in yards, etc. I did not observe dents in cars but many shredded leaves and damaged gardens. Rain approx 7:35 to 8pm. Measurement in gauge at 8pm 0.30" but water accum in dog water dish showed as much as 0.70" since it included melted hail. Another storm 9pm to 10pm producing 0.44" and rate of 0.25"/15 min at one point. Hail report submitted.
6/30/2013 7:00 AM 0.00 0.0 M M M
7/1/2013 7:00 AM 0.03 M M M M
7/2/2013 7:00 AM 0.03 M M M M
7/3/2013 7:00 AM 0.00 0.0 M M M
7/4/2013 7:00 AM T M M M M
7/5/2013 7:00 AM 0.00 0.0 M M M
7/6/2013 7:00 AM 0.08 M M M M
7/7/2013 7:00 AM 0.02 M M M M
7/8/2013 7:00 AM 0.15 M M M M
7/9/2013 7:00 AM 0.18 M M M M
7/10/2013 7:00 AM 0.00 0.0 M M M
7/11/2013 7:00 AM 0.00 0.0 M M M
7/12/2013 7:00 AM 0.00 0.0 M M M
7/13/2013 7:00 AM 0.08 M M M M
7/14/2013 7:00 AM 0.02 M M M M
7/15/2013 7:00 AM T M M M M Overnight a trace.
7/16/2013 7:00 AM 0.00 0.0 M M M Overnight low 53F. Heavy dew.
7/17/2013 7:00 AM 0.00 0.0 M M M
7/18/2013 7:00 AM 0.00 0.0 M M M
7/19/2013 7:00 AM 0.10 M M M M
7/20/2013 7:00 AM 0.00 0.0 M M M
7/21/2013 7:00 AM 0.01 M M M M
7/22/2013 7:00 AM 0.00 0.0 M M M
7/23/2013 7:00 AM 0.00 0.0 M M M
7/24/2013 7:00 AM 0.00 0.0 M M M
7/25/2013 7:00 AM 0.06 M M M M
7/26/2013 7:00 AM 0.03 M M M M
7/27/2013 7:00 AM 0.00 0.0 M M M
7/28/2013 7:00 AM T M M M M Overcast with periods where slight rain falls hesitantly from the skies.
7/29/2013 7:00 AM 0.07 M M M M
7/30/2013 7:00 AM 0.13 M M M M
7/31/2013 7:00 AM 0.00 0.0 M M M
8/1/2013 7:00 AM 0.11 M M M M
8/2/2013 7:00 AM 0.05 M M M M
8/3/2013 7:00 AM 0.00 0.0 M M M
8/4/2013 7:00 AM 0.54 M M M M Very heavy rain with some hail between 4:45 and 5:15. I got home shortly after so I don't have detailed increments. 0.41" observed at 5:20pm. Lighter but steady rain for the next hour until about 6:30pm producing 0.13" additional.
8/5/2013 7:00 AM 0.00 0.0 M M M
8/6/2013 7:00 AM 0.01 M M M M
8/7/2013 7:00 AM T M M M M
8/8/2013 7:00 AM 0.00 0.0 M M M
8/9/2013 7:00 AM 0.03 M M M M
8/10/2013 7:00 AM 0.00 0.0 M M M
8/11/2013 7:00 AM 0.07 M M M M
8/12/2013 7:00 AM T M M M M
8/13/2013 7:00 AM 0.67 M M M M I was not home during this storm. An observant neighbor reported pea-size to occasional bigger pieces of hail from 1:40-2:00.
8/14/2013 7:00 AM 0.02 M M M M
8/15/2013 7:00 AM 0.00 0.0 M M M
8/16/2013 7:00 AM T M M M M
8/17/2013 7:00 AM 0.00 0.0 M M M
8/18/2013 7:00 AM 0.00 0.0 M M M
8/19/2013 7:00 AM T M M M M
8/20/2013 7:00 AM 0.00 0.0 M M M
8/21/2013 7:00 AM 0.00 0.0 M M M
8/22/2013 7:00 AM 0.00 0.0 M M M
8/23/2013 7:00 AM 0.08 M M M M Overnight a little rain.
8/24/2013 7:00 AM 0.01 M M M M
8/25/2013 7:00 AM 0.02 M M M M
8/26/2013 7:00 AM 0.00 0.0 M M M
8/27/2013 7:00 AM 0.06 0.0 M M M Overnight rainfall?
8/28/2013 7:00 AM 0.00 0.0 M M M
8/29/2013 7:00 AM 0.00 0.0 M M M
8/30/2013 7:00 AM T M M M M
8/31/2013 7:00 AM T M M M M
9/1/2013 7:00 AM 0.03 0.0 M M M
9/2/2013 7:00 AM 0.00 0.0 M M M
9/3/2013 7:00 AM 0.00 0.0 M M M
9/4/2013 7:00 AM T M M M M
9/5/2013 7:00 AM 0.00 0.0 M M M
9/6/2013 7:00 AM 0.00 0.0 M M M
9/7/2013 7:00 AM 0.00 0.0 M M M
9/8/2013 7:00 AM 0.00 0.0 M M M
9/9/2013 7:00 AM 0.00 0.0 M M M
9/10/2013 6:00 AM 1.11 M M M M Very heavy rain 2:50pm-3:10pm producing approximately 0.33" rain. Rain resuming 7:30pm and continuing overnight.
9/11/2013 7:00 AM 0.52 M M M M
9/12/2013 7:00 AM 3.64 M M M M Readings taken at these times: 6:30pm 0.15". 9pm 1.11" additional. 2:20am +1.69". 3:15am +0.18". 4:15am +0.42". 7am +0.09".
9/13/2013 7:00 AM 2.38 0.0 M M M Severe flood damage. No water, gas, sewer or electricity. Cell service out.
9/14/2013 7:00 AM 0.04 M M M M Evacuating Lyons on town orders.
9/15/2013 7:00 AM 0.04 M M M M my neighbor who has not yet evacuated Lyons gave me this report.
9/16/2013 7:00 AM 1.69 M M M M Neighbor who has not yet evacuated got this reading for me
9/17/2013 7:00 AM 0.02 M M M M This measurement was conveyed to me by a neighbor who has not evacuated Lyons. It was taken at my site.
9/18/2013 7:00 AM 0.00 0.0 M M M This measurement was taken by my neighbor who has not evacuated.
9/19/2013 7:00 AM 0.06 M M M M Readings this week have been taken at my gauge by a nearby neighbor who has not evacuated Lyons.
9/20/2013 7:00 AM 0.00 0.0 M M M This reading was taken by my neighbor who has not yet evacuated. They will evacuate Sunday.
9/21/2013 7:00 AM 0.00 0.0 M M M
9/22/2013 7:00 AM 0.00 0.0 M M M
9/23/2013 7:00 AM 0.33 M M M M
9/24/2013 7:00 AM 0.00 0.0 M M M
9/25/2013 7:00 AM 0.01 M M M M Many of the current reports are coming from folks visiting my house during this extended evacuation of Lyons. My neighbor reported this to me.
9/26/2013 7:00 AM 0.00 0.0 M M M
9/27/2013 7:00 AM 0.00 0.0 M M M
9/28/2013 7:00 AM 0.31 M M M M I took this reading. Frost overnight
9/29/2013 7:00 AM 0.00 0.0 M M M
9/30/2013 7:00 AM 0.00 0.0 M M M



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
5/7/2013 7:45 PM Raining too hard to get accurate hail reading. 1/4" Pea Size Rice Rice Hard|White Ice 15 3min no damage Intermittent True After rain After smaller hail
6/28/2013 7:37 PM Observed hail storm from location two blocks from home. I will update the report with rainfall totals later this evening. Hail was constant and very very heavy for the 10 or 11 minute period. Hailstones accumulated on grass enough to make things look fairly white. 0.31" rain recorded from the rain and hailfall over the time period. Rain continued for roughly 5 or 10 minutes after hail stopped at approx 7:48pm. One hour after the storm I can still readily find hailstones in excess of 1" diameter in my yard. Updated report 6/30/13 after realizing the hail 6/28/30 has produced dents in cars. Like mine. 1 1/4" Half Dollar Size 3/8" 1/4" Pea Size Hard|White Ice 11 1min minor leaf damage.shredded leaves.car dents Continuous False Same time as rain After smaller hail 10-20