Station Overview Station Location
Station Number CO-AR-321 Latitude 39.570286
Station Name Littleton 5.0 ESE Longitude -104.925979
County Arapahoe Elevation (ft) 5762



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 1.34 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 14 0.95 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 14 0.73 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 15 0.55 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 15 0.56 2.28 9 2.28 9 0.00 0 0 8 0 27.8 8 5
March 15 1.86 0.33 2 0.33 2 0.00 0 0 2 0 3.9 2 1
April 15 2.30 3.30 9 3.30 9 0.00 0 0 9 0 6.1 1 2
May 15 2.63 2.77 9 2.77 9 0.00 0 0 8 1 0.0 0 0
June 15 2.05 2.88 8 2.88 8 0.00 0 0 7 1 0.0 0 0
July 15 2.45 0.18 3 0.18 3 0.00 0 0 3 0 0.0 0 0
Aug 15 2.46 0.87 4 0.87 4 0.00 0 0 4 0 0.0 0 0
Sept 15 1.24 0.40 2 0.40 2 0.00 0 0 2 0 0.0 0 0
Water Year Totals: 19.12" 13.01" 46 days 13.01" 46 0.00" 0 days 0 43 days 2 days 37.8" 11 days 8 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
10/2/2014
10/3/2014
10/4/2014
10/5/2014
10/6/2014
10/7/2014
10/8/2014
10/9/2014
10/10/2014
10/11/2014
10/12/2014
10/13/2014
10/14/2014
10/15/2014
10/16/2014
10/17/2014
10/18/2014
10/19/2014
10/20/2014
10/21/2014
10/22/2014
10/23/2014
10/24/2014
10/25/2014
10/26/2014
10/27/2014
10/28/2014
10/29/2014
10/30/2014
10/31/2014
11/1/2014
11/2/2014
11/3/2014
11/4/2014
11/5/2014
11/6/2014
11/7/2014
11/8/2014
11/9/2014
11/10/2014
11/11/2014
11/12/2014
11/13/2014
11/14/2014
11/15/2014
11/16/2014
11/17/2014
11/18/2014
11/19/2014
11/20/2014
11/21/2014
11/22/2014
11/23/2014
11/24/2014
11/25/2014
11/26/2014
11/27/2014
11/28/2014
11/29/2014
11/30/2014
12/1/2014
12/2/2014
12/3/2014
12/4/2014
12/5/2014
12/6/2014
12/7/2014
12/8/2014
12/9/2014
12/10/2014
12/11/2014
12/12/2014
12/13/2014
12/14/2014
12/15/2014
12/16/2014
12/17/2014
12/18/2014
12/19/2014
12/20/2014
12/21/2014
12/22/2014
12/23/2014
12/24/2014
12/25/2014
12/26/2014
12/27/2014
12/28/2014
12/29/2014
12/30/2014
12/31/2014
Day of YearDaily PrcpMultiday Prcp
1/1/2015
1/2/2015
1/3/2015
1/4/2015
1/5/2015
1/6/2015
1/7/2015
1/8/2015
1/9/2015
1/10/2015
1/11/2015
1/12/2015
1/13/2015
1/14/2015
1/15/2015
1/16/2015
1/17/2015
1/18/2015
1/19/2015
1/20/2015
1/21/2015
1/22/2015
1/23/2015
1/24/2015
1/25/2015
1/26/2015
1/27/2015
1/28/2015
1/29/2015
1/30/2015
1/31/2015
2/1/2015
2/2/2015
2/3/2015 0.00
2/4/2015
2/5/2015 0.04
2/6/2015
2/7/2015
2/8/2015
2/9/2015
2/10/2015
2/11/2015
2/12/2015
2/13/2015
2/14/2015
2/15/2015
2/16/2015 0.47
2/17/2015 0.32
2/18/2015
2/19/2015
2/20/2015
2/21/2015 0.09
2/22/2015 0.44
2/23/2015 0.24
2/24/2015
2/25/2015
2/26/2015 0.56
2/27/2015 0.12
2/28/2015
3/1/2015
3/2/2015
3/3/2015
3/4/2015 0.07
3/5/2015
3/6/2015
3/7/2015
3/8/2015
3/9/2015
3/10/2015
3/11/2015
3/12/2015
3/13/2015
3/14/2015
3/15/2015
3/16/2015
3/17/2015
3/18/2015
3/19/2015
3/20/2015
3/21/2015
3/22/2015
3/23/2015
3/24/2015
3/25/2015
3/26/2015 0.26
3/27/2015
3/28/2015
3/29/2015
3/30/2015
3/31/2015
Day of YearDaily PrcpMultiday Prcp
4/1/2015
4/2/2015
4/3/2015
4/4/2015
4/5/2015
4/6/2015
4/7/2015
4/8/2015
4/9/2015 0.09
4/10/2015
4/11/2015
4/12/2015
4/13/2015
4/14/2015
4/15/2015
4/16/2015
4/17/2015 1.61
4/18/2015 0.21
4/19/2015 0.18
4/20/2015
4/21/2015
4/22/2015
4/23/2015 0.18
4/24/2015 0.01
4/25/2015
4/26/2015 0.07
4/27/2015 0.87
4/28/2015 0.08
4/29/2015
4/30/2015
5/1/2015
5/2/2015
5/3/2015
5/4/2015
5/5/2015
5/6/2015
5/7/2015
5/8/2015
5/9/2015
5/10/2015
5/11/2015
5/12/2015
5/13/2015
5/14/2015
5/15/2015
5/16/2015
5/17/2015
5/18/2015
5/19/2015 0.65
5/20/2015 0.07
5/21/2015
5/22/2015 0.12
5/23/2015 0.41
5/24/2015 0.16
5/25/2015 0.03
5/26/2015 1.31
5/27/2015 0.02
5/28/2015 T
5/29/2015
5/30/2015
5/31/2015
6/1/2015
6/2/2015
6/3/2015
6/4/2015
6/5/2015
6/6/2015
6/7/2015
6/8/2015
6/9/2015
6/10/2015
6/11/2015
6/12/2015 1.69
6/13/2015 0.61
6/14/2015 0.22
6/15/2015
6/16/2015
6/17/2015 0.06
6/18/2015 T
6/19/2015
6/20/2015
6/21/2015
6/22/2015
6/23/2015
6/24/2015 0.02
6/25/2015 0.14
6/26/2015 0.14
6/27/2015
6/28/2015
6/29/2015
6/30/2015
Day of YearDaily PrcpMultiday Prcp
7/1/2015
7/2/2015 0.04
7/3/2015 0.11
7/4/2015
7/5/2015
7/6/2015
7/7/2015
7/8/2015
7/9/2015
7/10/2015
7/11/2015
7/12/2015
7/13/2015
7/14/2015
7/15/2015
7/16/2015
7/17/2015 0.03
7/18/2015
7/19/2015
7/20/2015
7/21/2015
7/22/2015
7/23/2015
7/24/2015
7/25/2015
7/26/2015
7/27/2015
7/28/2015
7/29/2015
7/30/2015
7/31/2015
8/1/2015
8/2/2015
8/3/2015
8/4/2015
8/5/2015
8/6/2015
8/7/2015
8/8/2015
8/9/2015
8/10/2015
8/11/2015
8/12/2015
8/13/2015
8/14/2015 0.23
8/15/2015
8/16/2015 0.10
8/17/2015
8/18/2015 0.31
8/19/2015 0.23
8/20/2015
8/21/2015
8/22/2015
8/23/2015
8/24/2015
8/25/2015
8/26/2015
8/27/2015
8/28/2015
8/29/2015
8/30/2015
8/31/2015
9/1/2015
9/2/2015
9/3/2015
9/4/2015 0.26
9/5/2015
9/6/2015
9/7/2015
9/8/2015
9/9/2015
9/10/2015
9/11/2015
9/12/2015
9/13/2015
9/14/2015
9/15/2015
9/16/2015
9/17/2015
9/18/2015
9/19/2015
9/20/2015
9/21/2015
9/22/2015
9/23/2015 0.14
9/24/2015
9/25/2015
9/26/2015
9/27/2015
9/28/2015
9/29/2015
9/30/2015



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
2/3/2015 7:00 AM 0.00 0.0 M M M
2/5/2015 7:00 AM 0.04 0.5 0.04 M M
2/16/2015 7:00 AM 0.47 4.0 0.47 M M At 7AM observation: light snow, calm wind, 23F
2/17/2015 7:00 AM 0.32 2.6 0.32 6.5 M
2/21/2015 7:00 AM 0.09 1.7 0.09 M M
2/22/2015 7:00 AM 0.44 7.2 0.44 8.9 0.53
2/23/2015 7:00 AM 0.24 3.0 0.24 10.5 M
2/26/2015 7:00 AM 0.56 6.0 M 9.1 M
2/27/2015 7:00 AM 0.12 2.8 0.12 11.0 M Drier snow, compared to 2 previous days. This 2.8 inches fell while temps were in the mid-teens, producing a fluffy powder snowfall
3/4/2015 7:00 AM 0.07 2.0 0.07 8.5 M
3/26/2015 7:00 AM 0.26 1.9 0.26 M M
4/9/2015 7:00 AM 0.09 M M M M
4/17/2015 7:00 AM 1.61 6.1 M 6.1 M
4/18/2015 7:00 AM 0.21 M M 1.5 M Unusual for the front range of Colorado, we observed snow changing to rain (occurring 7AM to noon on the 17th). The relatively warm rain, combined with the warmth in the soil, resulted in accelerated melting of the 6 inch snowfall.
4/19/2015 7:00 AM 0.18 M M M M
4/23/2015 7:00 AM 0.18 M M M M
4/24/2015 7:00 AM 0.01 M M M M
4/26/2015 7:00 AM 0.07 M M M M
4/27/2015 7:00 AM 0.87 M M M M light rain in progress at 7AM observation
4/28/2015 7:00 AM 0.08 M M M M
5/19/2015 7:00 AM 0.65 M M M M
5/20/2015 7:00 AM 0.07 M M M M
5/22/2015 7:00 AM 0.12 M M M M
5/23/2015 7:00 AM 0.41 M M M M
5/24/2015 7:00 AM 0.16 M M M M
5/25/2015 7:00 AM 0.03 M M M M 3:45PM thunderstorm with rice sized hail, nearly covered the surface of the ground, but only 3/100ths liquid precip.
5/26/2015 7:00 AM 1.31 M M M M Thunderstorm at 8:15PM, lasting about 30 minutes. Initial precip was rice sized hail, then progressing to pea size. Accumulated 2 inches deep(!) Heavy rain - with, and following, the hail event.
5/27/2015 7:00 AM 0.02 M M M M
5/28/2015 7:00 AM T M M M M
6/12/2015 7:00 AM 1.69 M M M M steady rain at 7:00 AM observation. Calm wind. 55 degrees F.
6/13/2015 7:00 AM 0.61 M M M M
6/14/2015 7:00 AM 0.22 M M M M
6/17/2015 7:00 AM 0.06 M M M M
6/18/2015 7:00 AM T M M M M
6/24/2015 7:00 AM 0.02 M M M M
6/25/2015 7:00 AM 0.14 M M M M
6/26/2015 7:00 AM 0.14 M M M M
7/2/2015 7:00 AM 0.04 M M M M
7/3/2015 7:00 AM 0.11 M M M M
7/17/2015 7:00 AM 0.03 M M M M
8/14/2015 7:00 AM 0.23 M M M M fast moving storm with wind and lightning moved through at 5:30 PM. No hail
8/16/2015 7:00 AM 0.10 M M M M
8/18/2015 7:00 AM 0.31 M M M M
8/19/2015 7:00 AM 0.23 M M M M
9/4/2015 7:00 AM 0.26 M M M M Rain started about 5PM on 9/3. Continued until about 6:15 PM. No thunder or lightening.
9/23/2015 7:00 AM 0.14 M 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