Station Overview Station Location
Station Number CO-DG-303 Latitude 39.531339
Station Name Littleton 4.4 S Longitude -105.027455
County Douglas Elevation (ft) 5710



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 19 1.30 1.10 4 1.10 4 0.00 0 0 3 1 15.0 4 3
Nov 19 0.99 1.84 5 1.84 5 0.00 0 0 3 2 5.6 2 3
Dec 19 0.73 0.40 3 0.40 3 0.00 0 0 1 2 0.4 1 1
Jan 20 0.52 0.20 2 0.20 2 0.00 0 0 1 1 0.0 0 1
Feb 20 0.49 1.06 9 1.06 9 0.00 0 0 8 1 21.5 8 9
March 20 1.70 1.37 5 1.37 5 0.00 0 0 3 2 11.8 2 2
April 20 2.25 0.75 7 0.75 7 0.00 0 0 4 3 12.1 5 5
May 20 2.53 1.10 3 1.10 3 0.00 0 0 2 1 0.0 0 0
June 20 1.95 0.79 7 0.79 7 0.00 0 0 7 0 0.0 0 0
July 20 1.96 0.61 8 0.24 3 0.37 5 1 3 0 0.0 0 0
Aug 20 2.22 0.29 4 0.29 4 0.00 0 0 4 0 0.0 0 0
Sept 20 1.24 0.99 2 0.99 2 0.00 0 0 2 0 6.9 1 1
Water Year Totals: 17.88" 10.50" 59 days 10.13" 54 0.37" 5 days 1 41 days 13 days 73.3" 23 days 25 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
10/1/2019
10/2/2019
10/3/2019
10/4/2019
10/5/2019
10/6/2019
10/7/2019
10/8/2019
10/9/2019
10/10/2019 0.15
10/11/2019
10/12/2019
10/13/2019
10/14/2019
10/15/2019
10/16/2019
10/17/2019
10/18/2019
10/19/2019
10/20/2019
10/21/2019
10/22/2019
10/23/2019
10/24/2019
10/25/2019
10/26/2019
10/27/2019 M
10/28/2019 0.30
10/29/2019 0.65
10/30/2019
10/31/2019 T
11/1/2019
11/2/2019
11/3/2019
11/4/2019
11/5/2019
11/6/2019
11/7/2019
11/8/2019
11/9/2019
11/10/2019
11/11/2019 0.04
11/12/2019
11/13/2019
11/14/2019
11/15/2019
11/16/2019
11/17/2019
11/18/2019
11/19/2019
11/20/2019
11/21/2019
11/22/2019 0.20
11/23/2019
11/24/2019
11/25/2019 T
11/26/2019 1.60
11/27/2019
11/28/2019
11/29/2019 T
11/30/2019
12/1/2019
12/2/2019
12/3/2019
12/4/2019
12/5/2019
12/6/2019
12/7/2019
12/8/2019
12/9/2019
12/10/2019
12/11/2019
12/12/2019
12/13/2019
12/14/2019
12/15/2019 T
12/16/2019
12/17/2019
12/18/2019
12/19/2019
12/20/2019
12/21/2019
12/22/2019
12/23/2019
12/24/2019
12/25/2019
12/26/2019
12/27/2019
12/28/2019 0.40
12/29/2019 T
12/30/2019
12/31/2019
Day of YearDaily PrcpMultiday Prcp
1/1/2020
1/2/2020
1/3/2020
1/4/2020
1/5/2020
1/6/2020
1/7/2020
1/8/2020
1/9/2020
1/10/2020
1/11/2020
1/12/2020
1/13/2020
1/14/2020
1/15/2020
1/16/2020
1/17/2020
1/18/2020
1/19/2020
1/20/2020
1/21/2020
1/22/2020
1/23/2020
1/24/2020
1/25/2020
1/26/2020
1/27/2020 T
1/28/2020
1/29/2020
1/30/2020 0.20
1/31/2020
2/1/2020
2/2/2020
2/3/2020 0.02
2/4/2020 0.04
2/5/2020
2/6/2020
2/7/2020 0.01
2/8/2020 0.67
2/9/2020 0.05
2/10/2020 0.05
2/11/2020
2/12/2020 T
2/13/2020
2/14/2020
2/15/2020
2/16/2020
2/17/2020
2/18/2020 0.16
2/19/2020 0.06
2/20/2020
2/21/2020
2/22/2020
2/23/2020
2/24/2020
2/25/2020 M
2/26/2020
2/27/2020
2/28/2020
2/29/2020
3/1/2020 T
3/2/2020 0.05
3/3/2020
3/4/2020
3/5/2020
3/6/2020
3/7/2020
3/8/2020
3/9/2020
3/10/2020
3/11/2020
3/12/2020
3/13/2020
3/14/2020
3/15/2020
3/16/2020
3/17/2020
3/18/2020
3/19/2020
3/20/2020 1.30
3/21/2020
3/22/2020 T
3/23/2020
3/24/2020
3/25/2020
3/26/2020
3/27/2020
3/28/2020 0.02
3/29/2020
3/30/2020
3/31/2020
Day of YearDaily PrcpMultiday Prcp
4/1/2020
4/2/2020
4/3/2020
4/4/2020
4/5/2020
4/6/2020
4/7/2020
4/8/2020
4/9/2020
4/10/2020
4/11/2020
4/12/2020 0.20
4/13/2020 M
4/14/2020 0.14
4/15/2020
4/16/2020 0.17
4/17/2020 0.24
4/18/2020
4/19/2020 T
4/20/2020
4/21/2020
4/22/2020
4/23/2020
4/24/2020 T
4/25/2020 T
4/26/2020
4/27/2020
4/28/2020
4/29/2020
4/30/2020
5/1/2020
5/2/2020
5/3/2020
5/4/2020
5/5/2020
5/6/2020
5/7/2020
5/8/2020
5/9/2020
5/10/2020
5/11/2020
5/12/2020 T
5/13/2020
5/14/2020
5/15/2020
5/16/2020 0.07
5/17/2020
5/18/2020
5/19/2020
5/20/2020
5/21/2020
5/22/2020
5/23/2020
5/24/2020
5/25/2020 1.03
5/26/2020
5/27/2020
5/28/2020
5/29/2020
5/30/2020
5/31/2020
6/1/2020
6/2/2020
6/3/2020
6/4/2020
6/5/2020 0.06
6/6/2020
6/7/2020 0.04
6/8/2020
6/9/2020 0.44
6/10/2020 0.09
6/11/2020
6/12/2020
6/13/2020
6/14/2020
6/15/2020
6/16/2020
6/17/2020
6/18/2020
6/19/2020
6/20/2020
6/21/2020
6/22/2020
6/23/2020
6/24/2020
6/25/2020 0.08
6/26/2020 0.03
6/27/2020
6/28/2020 0.05
6/29/2020
6/30/2020
Day of YearDaily PrcpMultiday Prcp
7/1/2020
7/2/2020
7/3/2020
7/4/2020
7/5/2020
7/6/2020
7/7/2020
7/8/2020
7/9/2020
7/10/2020
7/11/2020
7/12/2020
7/13/2020 **
7/14/2020 **
7/15/2020 **
7/16/2020 **
7/17/2020 0.37
7/18/2020
7/19/2020
7/20/2020
7/21/2020
7/22/2020
7/23/2020
7/24/2020
7/25/2020 0.02
7/26/2020 0.20
7/27/2020 0.02
7/28/2020
7/29/2020
7/30/2020
7/31/2020
8/1/2020 0.06
8/2/2020
8/3/2020
8/4/2020
8/5/2020
8/6/2020
8/7/2020
8/8/2020
8/9/2020
8/10/2020
8/11/2020
8/12/2020
8/13/2020
8/14/2020
8/15/2020
8/16/2020
8/17/2020
8/18/2020
8/19/2020
8/20/2020
8/21/2020
8/22/2020
8/23/2020
8/24/2020
8/25/2020
8/26/2020
8/27/2020 0.10
8/28/2020
8/29/2020 0.09
8/30/2020 0.04
8/31/2020
9/1/2020
9/2/2020
9/3/2020
9/4/2020
9/5/2020
9/6/2020
9/7/2020
9/8/2020 0.30
9/9/2020 0.69
9/10/2020
9/11/2020
9/12/2020
9/13/2020
9/14/2020
9/15/2020
9/16/2020
9/17/2020
9/18/2020
9/19/2020
9/20/2020
9/21/2020
9/22/2020
9/23/2020
9/24/2020
9/25/2020
9/26/2020
9/27/2020
9/28/2020
9/29/2020
9/30/2020



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/10/2019 8:00 PM 0.15 4.0 0.15 M M selected sites were not very good.. to much shelter from three sides
10/27/2019 7:00 PM M M M M M a trace of light dry snow fell , times unk
10/28/2019 7:00 PM 0.30 5.0 0.30 5.0 0.30 light to moderate snow
10/29/2019 7:00 PM 0.65 5.0 M 11.0 M light day snow on and off all day.light wind {EDIT: Observer reported 2.50 for melted core values for new and total snow. This is high compared to the snow depths reported and appears to be decimal typos. Changed SWE reports of 2.50 to NA until observer can be contacted to verify. Submission Time Before EDIT: 10/29/2019 7:22 PM CoCoSTAFF DNT}
10/31/2019 7:00 PM T 1.0 T 12.0 T
11/11/2019 7:00 PM 0.04 M M 2.0 M light snow fell mostly after midnight until early morning. it's difficult to measure due to our location, we're open to any suggest on how to improve our report
11/22/2019 7:00 PM 0.20 4.0 M 4.0 M must wetter snow than in the recent past
11/25/2019 7:00 PM T M M M M very light snow began in the late afternoon
11/26/2019 7:00 PM 1.60 1.6 M 23.0 M snow continued from previous day and by midnight approx. 5 inches had fallen and continued all day till around 4 pm. temp stayed below freezing all day, occasional gust winds with reduced visibility
11/29/2019 7:00 PM T M M M M just a dusting on this one
12/15/2019 7:00 PM T M M M M on and off flurries , very light
12/28/2019 7:00 PM 0.40 0.4 M 4.5 M light snow started sometime during the night. gusty winds reduced visibility to less than a mile at times. snow was wetter than previous snows
12/29/2019 7:00 PM T M M M M intermittent light snow fell over night
1/27/2020 7:00 PM T M M M M don't know if this precipt can even be called a "trace" relatively large flakes fell periodically but melted on hitting the surface
1/30/2020 7:00 PM 0.20 M M 2.0 M light mix/snow after 7 pm and then again with .15 in the evening..snow very dry
2/3/2020 7:00 PM 0.02 1.5 M 1.5 M very light snow started falling around 1030am and increased intensity around 4pm and has slackened again at 7pm. very, very dry (light) snow. light winds out of the NW. streets beginning to be covered with snow now
2/4/2020 7:00 PM 0.04 2.5 0.03 4.0 0.05 light flurries continued from the last report and until 3pm today.. and as with yesterday, the snow was very light (dry) temps stayed below freezing, winds out of the NW, sun light sporadically
2/7/2020 7:00 PM 0.01 M M M M
2/8/2020 7:00 AM 0.67 9.0 0.67 9.0 M light snow fell the evening of the 6th and continued through most of the day of the 7th.. mostly light to very light, but continuous , light winds and overcast skies
2/9/2020 7:00 PM 0.05 2.0 0.03 11.0 0.56 very light snow continued to fall. small flakes and not much density
2/10/2020 7:00 PM 0.05 1.5 M 9.0 M very light snow continues with small flakes and not much density. temp hovering around freezing so much melted
2/12/2020 7:00 PM T 1.5 M 7.0 M a very light snow continued to fall this reporting period. not to much is melting due to the temp. snow is compacting, bottom level is frozen or mushy but not much run-off
2/18/2020 7:00 PM 0.16 2.0 0.16 10.0 M light snow fell again over night (times unk ) (edit: daily precip changed from 2.00" to 0.16". PG)
2/19/2020 7:00 PM 0.06 1.5 M 10.0 M again, very very light snow most of the day interrupted by just very light snow, some drainage but not noteable
2/25/2020 7:00 PM M M M 6.0 1.40 we have re-set our core values
3/1/2020 7:00 PM T M M M M light snow flurries fell starting around 5 pm with intermittent snow until reporting time of 7pm
3/2/2020 7:00 PM 0.05 M M M M
3/20/2020 7:00 AM 1.30 9.5 M 9.5 M we're changing our reporting time to 0700 a.m effective with this report. wettest snow of the season. temps around freezing all day and then dropped over night. the site selected for the core sample did NOT have any slush in the sample (ie less water content)
3/22/2020 7:00 AM T M M M M very light snow fell sometime last night
3/28/2020 7:00 AM 0.02 2.3 M 2.3 M the precipitation fell during the night,so times are unknown.. light flurries, then freezing rain followed quickly by snow {EDIT: Observer reported 2.30 for new precip. This is high and it appears snow depth was entered by mistake. Changed report of 2.30 to NA until observer can be contacted to verify. Submission Time Before EDIT: 3/28/2020 8:12 AM CoCoSTAFF DNT}
4/12/2020 7:00 AM 0.20 1.2 T 1.2 T very light snow (small flakes) started around 4 a.m. this morning. street surface warmer than lawn area and are clear
4/13/2020 7:00 AM M 2.1 0.70 4.4 1.50 very light intermittent flurries most of this period {EDIT: observer reported 3.40 for new precip. This is high compared to surrounding reports of 0.28 to 0.63 and appears to be a decimal typo. Changed report of 3.40 to NA until observer can be contacted to verify. Submission Time Before EDIT: 4/13/2020 8:55 AM CoCoSTAFF DNT}
4/14/2020 7:00 AM 0.14 2.0 M 3.0 0.28 light to moderate (mostly light) snow .. some melted, some froze.
4/16/2020 7:00 AM 0.17 4.8 0.33 4.8 0.33 light drizzle started around 630 pm with snow starting after 0130 am. small flakes and light density
4/17/2020 7:00 AM 0.24 2.0 0.38 5.5 0.25 light snow showers and some sleet continued this date,
4/19/2020 7:00 AM T M M M M a large shower north and one south passed our area but just a trace here
4/24/2020 7:00 AM T M M M M just enough rain to wet the grass and patio
4/25/2020 7:00 AM T M M M M just on the fringe of a large fast moving shower that passed to the south of us.
5/12/2020 7:00 AM T M M M M mid afternoon light sprinkle , not much, fyi: advanced scouts hummingbirds have arrived
5/16/2020 7:00 AM 0.07 M M M M light rain fell during the night, no known thunderstorms or wind
5/25/2020 7:00 AM 1.03 M M M M light rain most of the day.. some thunder to the south of us and gusty wind interdentally
6/5/2020 7:00 AM 0.06 M M M M we just received a brush of a large system that passed to the south of us and moved on to the east.. rain drops were not of Panama size but larger than what we seen in Co. very short bursts of rain
6/7/2020 7:00 AM 0.04 M M M M lots of wind and some rain,
6/9/2020 7:00 AM 0.44 M M M M SPRINKLES STARTED AROUND 330 PM STANDY DRIZZLE AFTER MIDNIGHT. A GOOD SOAKING
6/10/2020 7:00 AM 0.09 M M M M remnants of yesterday after reporting time
6/25/2020 7:00 AM 0.08 M M M M moderate rain for short period of time
6/26/2020 7:00 AM 0.03 M M M M another quick shower
6/28/2020 7:00 AM 0.05 M M M M two (03 and .02) short showers yesterday,, what appeared to be relatively heavy showers passed both north and sound of us
7/25/2020 7:00 AM 0.02 M M M M wx missed us again,,, what appeared to be good / big systems moved to the north and south of us BUT---
7/26/2020 7:00 AM 0.20 M M M M 1.3 recorded mid afternoon and another .7during the evening
7/27/2020 7:00 AM 0.02 M M M M must have been a very light shower,, didn't notice when it happened
8/1/2020 7:00 AM 0.06 M M M M moderate size rain for a short period of time
8/27/2020 7:00 AM 0.10 M M M M light early evening shower
8/29/2020 7:00 AM 0.09 M M M M light drizzle for several hours
8/30/2020 7:00 AM 0.04 M M M M another light rain during the night
9/8/2020 7:00 AM 0.30 M M M M light rain had fallen prior to 0130 and continued through reporting time. temperature dropped rapidly and wind gusts increased after frontal passage
9/9/2020 7:00 AM 0.69 6.9 M 2.0 M steady wet snow



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
7/13/2020 7/17/2020 7:00 AM 5 0.37 M M



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