Station Overview Station Location
Station Number CO-JF-227 Latitude 39.5891
Station Name Littleton 6.0 WSW Longitude -105.1242
County Jefferson Elevation (ft) 5728



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 1.36 1.03 25 1.03 25 0.00 0 0 5 0 4.3 3 1
Nov 12 1.09 0.40 15 0.40 15 0.00 0 0 1 1 1.3 1 1
Dec 12 0.78 0.54 28 0.54 28 0.00 0 0 5 1 10.7 5 1
Jan 13 0.52 0.47 20 0.47 20 0.00 0 0 4 2 4.2 2 1
Feb 13 0.58 0.57 2 0.57 2 0.00 0 0 2 0 8.4 2 1
March 13 1.80 1.10 3 1.10 3 0.00 0 0 2 1 14.0 2 1
April 13 2.43 2.00 29 2.00 29 0.00 0 0 9 2 23.2 6 5
May 13 2.43 0.89 8 0.89 8 0.00 0 0 2 0 0.8 1 1
June 13 2.12 0.37 3 0.35 1 0.02 2 1 1 0 0.0 0 0
July 13 1.54 1.05 4 1.05 4 0.00 0 0 4 0 0.0 0 0
Aug 13 2.10 2.07 3 2.07 3 0.00 0 0 3 0 0.0 0 0
Sept 13 1.30 3.63 21 1.58 17 2.05 4 2 4 0 0.0 0 0
Water Year Totals: 18.05" 14.12" 161 days 12.05" 155 2.07" 6 days 3 42 days 7 days 66.9" 22 days 12 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 0.01
10/2/2012 0.00
10/3/2012 0.00
10/4/2012 0.00
10/5/2012 0.12
10/6/2012 0.12
10/7/2012
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
10/14/2012
10/15/2012
10/16/2012
10/17/2012
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 0.71
10/26/2012 0.07
10/27/2012 0.00
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 0.40
11/12/2012 T
11/13/2012 0.00
11/14/2012 0.00
11/15/2012
11/16/2012
11/17/2012
11/18/2012
11/19/2012
11/20/2012
11/21/2012
11/22/2012
11/23/2012
11/24/2012
11/25/2012
11/26/2012
11/27/2012
11/28/2012
11/29/2012
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 0.00
12/8/2012 0.00
12/9/2012 0.10
12/10/2012 0.00
12/11/2012 0.06
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 T
12/19/2012 0.19
12/20/2012
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 0.00
12/27/2012 0.00
12/28/2012 0.02
12/29/2012 0.00
12/30/2012
12/31/2012
Day of YearDaily PrcpMultiday Prcp
1/1/2013
1/2/2013
1/3/2013
1/4/2013
1/5/2013
1/6/2013
1/7/2013
1/8/2013
1/9/2013
1/10/2013
1/11/2013 0.00
1/12/2013 0.12
1/13/2013 T
1/14/2013 T
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 0.02
1/28/2013 0.00
1/29/2013 0.31
1/30/2013 0.02
1/31/2013
2/1/2013
2/2/2013
2/3/2013
2/4/2013
2/5/2013
2/6/2013
2/7/2013
2/8/2013
2/9/2013
2/10/2013
2/11/2013
2/12/2013
2/13/2013
2/14/2013
2/15/2013
2/16/2013
2/17/2013
2/18/2013
2/19/2013
2/20/2013
2/21/2013 0.30
2/22/2013
2/23/2013
2/24/2013 0.27
2/25/2013
2/26/2013
2/27/2013
2/28/2013
3/1/2013
3/2/2013
3/3/2013
3/4/2013
3/5/2013
3/6/2013
3/7/2013
3/8/2013
3/9/2013
3/10/2013
3/11/2013
3/12/2013
3/13/2013
3/14/2013
3/15/2013
3/16/2013
3/17/2013
3/18/2013
3/19/2013
3/20/2013
3/21/2013
3/22/2013 T
3/23/2013 0.85
3/24/2013 0.25
3/25/2013
3/26/2013
3/27/2013
3/28/2013
3/29/2013
3/30/2013
3/31/2013
Day of YearDaily PrcpMultiday Prcp
4/1/2013 0.00
4/2/2013 0.04
4/3/2013 0.11
4/4/2013 0.00
4/5/2013 0.00
4/6/2013 0.00
4/7/2013 0.00
4/8/2013 0.00
4/9/2013 0.23
4/10/2013 0.24
4/11/2013 0.00
4/12/2013 0.00
4/13/2013 0.00
4/14/2013 0.17
4/15/2013 0.01
4/16/2013 0.62
4/17/2013 T
4/18/2013
4/19/2013 0.00
4/20/2013 0.00
4/21/2013 T
4/22/2013 0.00
4/23/2013 0.46
4/24/2013 0.12
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 0.24
5/2/2013
5/3/2013 0.00
5/4/2013 0.00
5/5/2013 0.00
5/6/2013 0.00
5/7/2013 0.00
5/8/2013 0.00
5/9/2013 0.65
5/10/2013
5/11/2013
5/12/2013
5/13/2013
5/14/2013
5/15/2013
5/16/2013
5/17/2013
5/18/2013
5/19/2013
5/20/2013
5/21/2013
5/22/2013
5/23/2013
5/24/2013
5/25/2013
5/26/2013
5/27/2013
5/28/2013
5/29/2013
5/30/2013
5/31/2013
6/1/2013
6/2/2013
6/3/2013
6/4/2013
6/5/2013 0.35
6/6/2013
6/7/2013
6/8/2013
6/9/2013
6/10/2013
6/11/2013
6/12/2013
6/13/2013
6/14/2013
6/15/2013
6/16/2013
6/17/2013
6/18/2013
6/19/2013
6/20/2013
6/21/2013
6/22/2013
6/23/2013
6/24/2013
6/25/2013
6/26/2013
6/27/2013
6/28/2013
6/29/2013 **
6/30/2013 0.02
Day of YearDaily PrcpMultiday Prcp
7/1/2013
7/2/2013 0.10
7/3/2013
7/4/2013
7/5/2013
7/6/2013
7/7/2013
7/8/2013
7/9/2013
7/10/2013
7/11/2013
7/12/2013 0.36
7/13/2013
7/14/2013 0.25
7/15/2013 0.34
7/16/2013
7/17/2013
7/18/2013
7/19/2013
7/20/2013
7/21/2013
7/22/2013
7/23/2013
7/24/2013
7/25/2013
7/26/2013
7/27/2013
7/28/2013
7/29/2013
7/30/2013
7/31/2013
8/1/2013
8/2/2013
8/3/2013
8/4/2013
8/5/2013
8/6/2013
8/7/2013
8/8/2013
8/9/2013 0.40
8/10/2013 0.01
8/11/2013
8/12/2013
8/13/2013
8/14/2013
8/15/2013
8/16/2013
8/17/2013
8/18/2013
8/19/2013
8/20/2013
8/21/2013
8/22/2013
8/23/2013 1.66
8/24/2013
8/25/2013
8/26/2013
8/27/2013
8/28/2013
8/29/2013
8/30/2013
8/31/2013
9/1/2013
9/2/2013
9/3/2013
9/4/2013
9/5/2013
9/6/2013 0.00
9/7/2013
9/8/2013 0.00
9/9/2013 0.00
9/10/2013 0.16
9/11/2013 0.79
9/12/2013 **
9/13/2013 1.46
9/14/2013 0.20
9/15/2013 **
9/16/2013 0.59
9/17/2013 0.00
9/18/2013 0.00
9/19/2013 0.00
9/20/2013 0.00
9/21/2013 0.00
9/22/2013 0.00
9/23/2013 0.43
9/24/2013
9/25/2013 0.00
9/26/2013 0.00
9/27/2013 0.00
9/28/2013
9/29/2013
9/30/2013 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2012 7:00 AM 0.01 M M M M
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 7:00 AM 0.12 1.0 M 1.0 M Snow and sleet began early morning of 10/5/2012; grassy areas have snow
10/6/2012 7:00 AM 0.12 M M M M
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
10/18/2012 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 0.71 2.3 M M M rain began 10/24 in mid-afternoon, changing to snow by 8:00 pm.
10/26/2012 7:00 AM 0.07 1.0 M M M Light snow
10/27/2012 7:00 AM 0.00 0.0 M M M
10/28/2012 7:00 AM 0.00 0.0 M M M
10/29/2012 7:00 AM 0.00 0.0 M M M
10/30/2012 7:00 AM 0.00 0.0 M M M
10/31/2012 7:00 AM 0.00 0.0 M M M
11/1/2012 7:00 AM 0.00 0.0 M M M
11/2/2012 7:00 AM 0.00 0.0 M M M
11/3/2012 7:00 AM 0.00 0.0 M M M
11/4/2012 7:00 AM 0.00 0.0 M M M
11/5/2012 7:00 AM 0.00 0.0 M M M
11/6/2012 7:00 AM 0.00 0.0 M M M
11/7/2012 7:00 AM 0.00 0.0 M M M
11/8/2012 7:00 AM 0.00 0.0 M M M
11/9/2012 7:00 AM 0.00 0.0 M M M
11/10/2012 7:00 AM 0.00 0.0 M M M
11/11/2012 7:00 AM 0.40 1.3 M 1.3 M Rain began @ 10:00 am on 11/10/2012. Sleet began @ 11:40 am on 11/10/2012. Snow overnight, beginning evening of 11/10/2012.
11/12/2012 7:00 AM T T M M M Light snow flurry beginning around noon on 11/11/2012.
11/13/2012 7:00 AM 0.00 0.0 M M M
11/14/2012 7:00 AM 0.00 0.0 M M M
11/30/2012 7:00 AM 0.00 0.0 M M M
12/1/2012 7:00 AM 0.00 0.0 M M M
12/2/2012 7:00 AM 0.00 0.0 M M M
12/3/2012 7:00 AM 0.00 0.0 M M M
12/4/2012 7:00 AM 0.00 0.0 M M M
12/5/2012 7:00 AM 0.00 0.0 M M M
12/6/2012 7:00 AM 0.00 0.0 M M M
12/7/2012 7:00 AM 0.00 0.0 M M M
12/8/2012 7:00 AM 0.00 0.0 M M M
12/9/2012 7:00 AM 0.10 2.0 M 2.0 M
12/10/2012 7:00 AM 0.00 0.0 M M M
12/11/2012 7:00 AM 0.06 0.6 M M M Snow overnight (early morning, before 4:00 am)
12/12/2012 7:00 AM 0.00 0.0 M M M
12/13/2012 7:00 AM 0.00 0.0 M M M
12/14/2012 7:00 AM 0.00 0.0 M M M
12/15/2012 7:00 AM 0.00 0.0 M M M
12/16/2012 7:00 AM 0.00 0.0 M M M
12/17/2012 7:00 AM 0.00 0.0 M M M
12/18/2012 7:00 AM T T M M M
12/19/2012 7:00 AM 0.19 4.2 M M M
12/21/2012 7:00 AM 0.00 0.0 M M M
12/22/2012 7:00 AM 0.00 0.0 M M M
12/23/2012 7:00 AM 0.00 0.0 M M M
12/24/2012 7:00 AM 0.00 0.0 M M M
12/25/2012 7:00 AM 0.17 3.5 M M M
12/26/2012 7:00 AM 0.00 0.0 M M M
12/27/2012 7:00 AM 0.00 0.0 M M M
12/28/2012 7:00 AM 0.02 0.4 M M M
12/29/2012 7:00 AM 0.00 0.0 M M M
1/11/2013 7:00 AM 0.00 0.0 M M M
1/12/2013 7:00 AM 0.12 0.1 M M M Snowstorm began with freezing rain.
1/13/2013 7:00 AM T T M M M
1/14/2013 7:00 AM T T M M M
1/15/2013 7:00 AM 0.00 0.0 M M M
1/16/2013 7:00 AM 0.00 0.0 M M M
1/17/2013 7:00 AM 0.00 0.0 M M M
1/18/2013 7:00 AM 0.00 0.0 M M M
1/19/2013 7:00 AM 0.00 0.0 M M M
1/20/2013 7:00 AM 0.00 0.0 M M M
1/21/2013 7:00 AM 0.00 0.0 M M M
1/22/2013 7:00 AM 0.00 0.0 M M M
1/23/2013 7:00 AM 0.00 0.0 M M M
1/24/2013 7:00 AM 0.00 0.0 M M M
1/25/2013 7:00 AM 0.00 0.0 M M M
1/26/2013 7:00 AM 0.00 0.0 M M M
1/27/2013 7:00 AM 0.02 M M M M Evening rainshower
1/28/2013 7:00 AM 0.00 0.0 M M M
1/29/2013 7:00 AM 0.31 4.1 M 4.0 M Light snow at obs. time
1/30/2013 7:00 AM 0.02 T M M M
2/21/2013 5:30 AM 0.30 4.4 M 4.5 M Still snowing at obs time.
2/24/2013 7:00 AM 0.27 4.0 M M M Snow began mid-evening on 2/23/2013.
3/22/2013 7:00 AM T T M M M
3/23/2013 8:15 AM 0.85 11.5 M M M Heavy snow at obs time
3/24/2013 7:00 AM 0.25 2.5 M 14.0 M Light snow into evening of 3/23/2013.
4/1/2013 7:00 AM 0.00 0.0 M M M
4/2/2013 7:00 AM 0.04 M M M M
4/3/2013 7:00 AM 0.11 M M M M
4/4/2013 7:00 AM 0.00 0.0 M M M
4/5/2013 7:00 AM 0.00 0.0 M M M
4/6/2013 7:00 AM 0.00 0.0 M M M
4/7/2013 7:00 AM 0.00 0.0 M M M
4/8/2013 7:00 AM 0.00 0.0 M M M
4/9/2013 7:00 AM 0.23 5.5 M 5.5 M Still snowing at obs time
4/10/2013 7:00 AM 0.24 4.0 M 9.5 M
4/11/2013 7:00 AM 0.00 0.0 M M M
4/12/2013 7:00 AM 0.00 0.0 M M M
4/13/2013 7:00 AM 0.00 0.0 M M M
4/14/2013 7:00 AM 0.17 M M M M Rain overnight (temps above freezing)
4/15/2013 7:00 AM 0.01 0.1 M 0.1 M Light snow flurry at obs time
4/16/2013 7:00 AM 0.62 7.8 M 8.0 M
4/17/2013 7:00 AM T T M M M Trace snow overnight; wet pavement in morning of 4/17/2013.
4/19/2013 7:00 AM 0.00 0.0 M M M
4/20/2013 7:00 AM 0.00 0.0 M M M
4/21/2013 7:00 AM T M M M M A few drops, late afternoon on 4/20
4/22/2013 7:00 AM 0.00 0.0 M M M
4/23/2013 7:00 AM 0.46 4.8 M M M Light snow at obs time
4/24/2013 5:30 AM 0.12 1.0 M 5.5 M
4/25/2013 7:00 AM 0.00 0.0 M M M
4/26/2013 7:00 AM 0.00 0.0 M M M
4/27/2013 7:00 AM 0.00 0.0 M M M
4/28/2013 7:00 AM 0.00 0.0 M M M
4/29/2013 7:00 AM 0.00 0.0 M M M
4/30/2013 7:00 AM 0.00 0.0 M M M
5/1/2013 6:00 AM 0.24 0.8 M 1.0 M A few sprinkles mid-afternoon on 4/30; then rain turning to snow overnight. Snowing @ obs time.
5/3/2013 7:00 AM 0.00 0.0 M M M
5/4/2013 7:00 AM 0.00 0.0 M M M
5/5/2013 7:00 AM 0.00 0.0 M M M
5/6/2013 7:00 AM 0.00 0.0 M M M
5/7/2013 7:00 AM 0.00 0.0 M M M
5/8/2013 7:00 AM 0.00 0.0 M M M
5/9/2013 7:00 AM 0.65 M M M M Rain began late afternoon on 5/8 and continued through early morning on 5/9.
6/5/2013 7:00 AM 0.35 M M M M Heavy rain and thunder/lightning the evening of 6/4/2013
7/2/2013 7:00 AM 0.10 M M M M Rain overnight into 7/2/2013
7/12/2013 7:00 AM 0.36 M M M M Late afternoon 7/11/2013: heavy rain.
7/14/2013 7:00 AM 0.25 M M M M
7/15/2013 7:00 AM 0.34 M M M M Heavy downpour in evening between 8:00 and 8:30 on July 14.
8/9/2013 7:00 AM 0.40 M M M M
8/10/2013 7:00 AM 0.01 M M M M
8/23/2013 7:00 AM 1.66 M M M M Exceptionally heavy rainfall and large hail (up to 2 inches) from strong thorms beginning late afternoon. Measured 1.5 inches in less than 30 minutes. Light rain into early morning on 8/23/2013.
9/6/2013 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 7:00 AM 0.16 M M M M
9/11/2013 7:00 AM 0.79 M M M M
9/14/2013 7:00 AM 0.20 M M M M
9/17/2013 7:00 AM 0.00 0.0 M M M
9/18/2013 7:00 AM 0.00 0.0 M M M
9/19/2013 7:00 AM 0.00 0.0 M M M
9/20/2013 7:00 AM 0.00 0.0 M M M
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 0.43 M M M M Rain over night
9/25/2013 7:00 AM 0.00 0.0 M M M
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
9/30/2013 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
6/29/2013 6/30/2013 3:30 PM 2 0.02 M M
9/12/2013 9/13/2013 5:30 AM 2 1.46 M M Minor street flooding on 9/12/2013.
9/15/2013 9/16/2013 7:00 AM 2 0.59 M M report should have started on 9/15 not 9/14 since last daily report was 9/14 CSPEARS



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