Station Overview Station Location
Station Number CO-BO-285 Latitude 40.0414439
Station Name Erie 1.7 WNW Longitude -105.0729374
County Boulder Elevation (ft) 5131



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 09 1.02 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 09 0.93 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 09 0.62 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 10 0.42 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 10 0.47 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 10 1.60 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 10 1.94 2.82 28 2.82 28 0.00 0 0 9 0 2.8 3 2
May 10 2.11 1.85 30 1.85 30 0.00 0 0 10 0 1.7 1 0
June 10 1.56 2.15 30 2.15 30 0.00 0 0 7 2 0.0 0 0
July 10 1.54 1.30 31 1.30 31 0.00 0 0 14 3 0.0 0 0
Aug 10 1.38 1.51 31 1.51 31 0.00 0 0 10 5 0.0 0 0
Sept 10 1.42 0.16 26 0.16 26 0.00 0 0 4 2 0.0 0 0
Water Year Totals: 15.01" 9.79" 176 days 9.79" 176 0.00" 0 days 0 54 days 12 days 4.5" 4 days 2 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
10/1/2009
10/2/2009
10/3/2009
10/4/2009
10/5/2009
10/6/2009
10/7/2009
10/8/2009
10/9/2009
10/10/2009
10/11/2009
10/12/2009
10/13/2009
10/14/2009
10/15/2009
10/16/2009
10/17/2009
10/18/2009
10/19/2009
10/20/2009
10/21/2009
10/22/2009
10/23/2009
10/24/2009
10/25/2009
10/26/2009
10/27/2009
10/28/2009
10/29/2009
10/30/2009
10/31/2009
11/1/2009
11/2/2009
11/3/2009
11/4/2009
11/5/2009
11/6/2009
11/7/2009
11/8/2009
11/9/2009
11/10/2009
11/11/2009
11/12/2009
11/13/2009
11/14/2009
11/15/2009
11/16/2009
11/17/2009
11/18/2009
11/19/2009
11/20/2009
11/21/2009
11/22/2009
11/23/2009
11/24/2009
11/25/2009
11/26/2009
11/27/2009
11/28/2009
11/29/2009
11/30/2009
12/1/2009
12/2/2009
12/3/2009
12/4/2009
12/5/2009
12/6/2009
12/7/2009
12/8/2009
12/9/2009
12/10/2009
12/11/2009
12/12/2009
12/13/2009
12/14/2009
12/15/2009
12/16/2009
12/17/2009
12/18/2009
12/19/2009
12/20/2009
12/21/2009
12/22/2009
12/23/2009
12/24/2009
12/25/2009
12/26/2009
12/27/2009
12/28/2009
12/29/2009
12/30/2009
12/31/2009
Day of YearDaily PrcpMultiday Prcp
1/1/2010
1/2/2010
1/3/2010
1/4/2010
1/5/2010
1/6/2010
1/7/2010
1/8/2010
1/9/2010
1/10/2010
1/11/2010
1/12/2010
1/13/2010
1/14/2010
1/15/2010
1/16/2010
1/17/2010
1/18/2010
1/19/2010
1/20/2010
1/21/2010
1/22/2010
1/23/2010
1/24/2010
1/25/2010
1/26/2010
1/27/2010
1/28/2010
1/29/2010
1/30/2010
1/31/2010
2/1/2010
2/2/2010
2/3/2010
2/4/2010
2/5/2010
2/6/2010
2/7/2010
2/8/2010
2/9/2010
2/10/2010
2/11/2010
2/12/2010
2/13/2010
2/14/2010
2/15/2010
2/16/2010
2/17/2010
2/18/2010
2/19/2010
2/20/2010
2/21/2010
2/22/2010
2/23/2010
2/24/2010
2/25/2010
2/26/2010
2/27/2010
2/28/2010
3/1/2010
3/2/2010
3/3/2010
3/4/2010
3/5/2010
3/6/2010
3/7/2010
3/8/2010
3/9/2010
3/10/2010
3/11/2010
3/12/2010
3/13/2010
3/14/2010
3/15/2010
3/16/2010
3/17/2010
3/18/2010
3/19/2010
3/20/2010
3/21/2010
3/22/2010
3/23/2010
3/24/2010
3/25/2010
3/26/2010
3/27/2010
3/28/2010
3/29/2010
3/30/2010
3/31/2010
Day of YearDaily PrcpMultiday Prcp
4/1/2010
4/2/2010 0.00
4/3/2010 0.00
4/4/2010 0.00
4/5/2010 0.00
4/6/2010 0.09
4/7/2010 0.13
4/8/2010 0.00
4/9/2010 0.00
4/10/2010 0.00
4/11/2010 0.00
4/12/2010 0.00
4/13/2010 0.00
4/14/2010 0.00
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.00
4/18/2010 0.07
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 0.00
4/22/2010 1.01
4/23/2010 0.46
4/24/2010 0.62
4/25/2010 0.00
4/26/2010 0.12
4/27/2010 0.00
4/28/2010
4/29/2010 0.18
4/30/2010 0.14
5/1/2010
5/2/2010 0.00
5/3/2010 0.00
5/4/2010 0.00
5/5/2010 0.00
5/6/2010 0.00
5/7/2010 0.07
5/8/2010 0.00
5/9/2010 0.00
5/10/2010 0.00
5/11/2010 0.00
5/12/2010 0.92
5/13/2010 0.04
5/14/2010 0.18
5/15/2010 0.25
5/16/2010 0.01
5/17/2010 0.00
5/18/2010 0.00
5/19/2010 0.14
5/20/2010 0.00
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.00
5/24/2010 0.00
5/25/2010 0.00
5/26/2010 0.04
5/27/2010 0.12
5/28/2010 0.00
5/29/2010 0.00
5/30/2010 0.08
5/31/2010 0.00
6/1/2010 0.00
6/2/2010 0.00
6/3/2010 0.00
6/4/2010 0.00
6/5/2010 0.00
6/6/2010 0.00
6/7/2010 0.00
6/8/2010 0.00
6/9/2010 0.08
6/10/2010 0.00
6/11/2010 0.21
6/12/2010 0.88
6/13/2010 0.37
6/14/2010 0.26
6/15/2010 0.00
6/16/2010 0.00
6/17/2010 0.00
6/18/2010 0.00
6/19/2010 0.00
6/20/2010 T
6/21/2010 T
6/22/2010 0.26
6/23/2010 0.00
6/24/2010 0.00
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.09
6/28/2010 0.00
6/29/2010 0.00
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 T
7/3/2010 0.04
7/4/2010 0.01
7/5/2010 0.78
7/6/2010 0.00
7/7/2010 0.03
7/8/2010 0.09
7/9/2010 0.02
7/10/2010 0.00
7/11/2010 0.00
7/12/2010 0.00
7/13/2010 0.00
7/14/2010 T
7/15/2010 0.02
7/16/2010 0.00
7/17/2010 0.00
7/18/2010 0.00
7/19/2010 0.05
7/20/2010 0.08
7/21/2010 0.04
7/22/2010 0.04
7/23/2010 0.02
7/24/2010 0.00
7/25/2010 0.00
7/26/2010 0.00
7/27/2010 0.00
7/28/2010 0.02
7/29/2010 T
7/30/2010 0.06
7/31/2010 0.00
8/1/2010 0.00
8/2/2010 T
8/3/2010 0.02
8/4/2010 T
8/5/2010 T
8/6/2010 0.00
8/7/2010 0.01
8/8/2010 0.01
8/9/2010 T
8/10/2010 0.14
8/11/2010 0.00
8/12/2010 0.00
8/13/2010 0.00
8/14/2010 0.00
8/15/2010 0.00
8/16/2010 0.29
8/17/2010 0.74
8/18/2010 0.00
8/19/2010 0.00
8/20/2010 0.06
8/21/2010 0.00
8/22/2010 0.00
8/23/2010 0.00
8/24/2010 0.20
8/25/2010 0.01
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 0.00
8/29/2010 T
8/30/2010 0.00
8/31/2010 0.03
9/1/2010 T
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 0.00
9/5/2010 0.00
9/6/2010 0.00
9/7/2010 0.00
9/8/2010 0.00
9/9/2010 0.09
9/10/2010 0.00
9/11/2010
9/12/2010
9/13/2010 0.00
9/14/2010
9/15/2010
9/16/2010 0.00
9/17/2010 0.00
9/18/2010 0.01
9/19/2010 T
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 0.03
9/23/2010 0.03
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 0.00
9/27/2010 0.00
9/28/2010 0.00
9/29/2010 0.00
9/30/2010 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
4/2/2010 7:00 AM 0.00 0.0 M M M
4/3/2010 7:00 AM 0.00 0.0 M M M
4/4/2010 7:00 AM 0.00 0.0 M M M
4/5/2010 7:00 AM 0.00 0.0 M M M
4/6/2010 7:00 AM 0.09 M M M M very windy minutes prior to rain/sleet event. thunder recorded @ 6:32 a.m.
4/7/2010 7:00 AM 0.13 2.1 0.13 2.1 0.13
4/8/2010 7:00 AM 0.00 0.0 M M M
4/9/2010 7:00 AM 0.00 0.0 M M M
4/10/2010 7:00 AM 0.00 0.0 M M M
4/11/2010 7:00 AM 0.00 0.0 M M M
4/12/2010 7:00 AM 0.00 0.0 M M M
4/13/2010 7:30 AM 0.00 0.0 M M M
4/14/2010 7:00 AM 0.00 0.0 M M M
4/15/2010 7:00 AM 0.00 0.0 M M M
4/16/2010 7:00 AM 0.00 0.0 M M M
4/17/2010 7:00 AM 0.00 0.0 M M M
4/18/2010 7:30 AM 0.07 M M M M steady lite rain ending @4:15p.m. today lite fog, wind calm, temp. 38.1.
4/19/2010 7:00 AM 0.00 0.0 M M M partly cloudy, 41.5F, winds calm
4/20/2010 7:00 AM 0.00 0.0 M M M overcast skies 42.1F
4/21/2010 7:00 AM 0.00 0.0 M M M
4/22/2010 6:45 AM 1.01 M M M M 46.2F @ 6:45a.m. heavy rain last p.m.
4/23/2010 7:00 AM 0.46 M M M M
4/24/2010 7:00 AM 0.62 M M M M 43.1F Overcast Breezy
4/25/2010 7:00 AM 0.00 0.0 M M M
4/26/2010 7:00 AM 0.12 T M M M 33.6F
4/27/2010 6:30 AM 0.00 0.0 M M M 35.1F clear skies
4/29/2010 7:00 AM 0.18 0.3 0.03 0.5 0.03 Off and on showers during nighttime. Turned over to snow around 5am.
4/30/2010 7:00 AM 0.14 0.4 0.05 0.0 0.00 Snow showers in morning until around 9AM.
5/2/2010 7:30 AM 0.00 0.0 M M M 36.1F, mostly cloudy
5/3/2010 6:45 AM 0.00 0.0 M M M 37.2F clear skies
5/4/2010 7:00 AM 0.00 0.0 M M M
5/5/2010 7:00 AM 0.00 0.0 M M M
5/6/2010 7:00 AM 0.00 0.0 M M M
5/7/2010 7:00 AM 0.07 T 0.02 T M 31.5F, trace of snow
5/8/2010 7:00 AM 0.00 0.0 M M M
5/9/2010 7:00 AM 0.00 0.0 M M M
5/10/2010 7:00 AM 0.00 0.0 M M M
5/11/2010 7:00 AM 0.00 0.0 M M M overcast skies
5/12/2010 7:00 AM 0.92 1.7 0.42 M M heavy wet snow started last nite @10:25p.m.Some thunder heard @10:45p.m. 7a.m. temp. 31.5F
5/13/2010 7:00 AM 0.04 M M M M
5/14/2010 7:00 AM 0.18 M M M M partly cloudy 40.5F calm
5/15/2010 6:10 AM 0.25 M M M M overcast w/lt. fog 43.2F
5/16/2010 7:00 AM 0.01 M M M M lite rain shower after 7pm then clearing. 38.1F @7 a.m.
5/17/2010 7:00 AM 0.00 0.0 M M M
5/18/2010 6:45 AM 0.00 0.0 M M M rain shower @ 8:25p.m. no measurable precip. recorded.
5/19/2010 7:00 AM 0.14 M M M M
5/20/2010 8:00 AM 0.00 0.0 M M M lite showers off & on thru evening. No measurable precip. fog this a.m.
5/21/2010 7:00 AM 0.00 0.0 M M M
5/22/2010 7:00 AM 0.00 0.0 M M M beautiful clear, warm sunny morning!
5/23/2010 7:00 AM 0.00 0.0 M M M 45F clear and calm
5/24/2010 7:00 AM 0.00 0.0 M M M
5/25/2010 7:00 AM 0.00 0.0 M M M
5/26/2010 7:00 AM 0.04 M M M M pea size hail/rain fell @ 9:30p.m. cloudy/overcast this a.m. 53F
5/27/2010 6:45 AM 0.12 M M M M
5/28/2010 7:00 AM 0.00 0.0 M M M
5/29/2010 7:00 AM 0.00 0.0 M M M
5/30/2010 6:40 AM 0.08 M M M M rain with very minimal soft pea-sized hail beginning @ 6:30p.m.
5/31/2010 7:30 AM 0.00 0.0 M M M
6/1/2010 7:00 AM 0.00 0.0 M M M
6/2/2010 7:00 AM 0.00 0.0 M M M
6/3/2010 7:00 AM 0.00 0.0 M M M overcast skies,winds calm, 55.6F
6/4/2010 7:00 AM 0.00 0.0 M M M
6/5/2010 6:00 AM 0.00 0.0 M M M
6/6/2010 7:40 AM 0.00 0.0 M M M
6/7/2010 7:00 AM 0.00 0.0 M M M
6/8/2010 6:00 AM 0.00 0.0 M M M
6/9/2010 7:00 AM 0.08 M M M M Rainfall @3:45pm
6/10/2010 7:00 AM 0.00 0.0 M M M
6/11/2010 7:00 AM 0.21 M M M M heavy thunder/lightning w/rainfall in evening. no hail.
6/12/2010 7:00 AM 0.88 M M M M showers began @3pm, increased into evening/nighttime. lightning/thunder off and on w/pea size hail. .21 in gauge as of 7pm. rain continued thru-out nitetime. total in gauge .88 as of 7a.m.
6/13/2010 7:00 AM 0.37 M M M M still raining @ 7:30am
6/14/2010 7:00 AM 0.26 M M M M cloudy 48F
6/15/2010 8:00 AM 0.00 0.0 M M M
6/16/2010 6:45 AM 0.00 0.0 M M M 52.5F sunny
6/17/2010 8:00 AM 0.00 0.0 M M M
6/18/2010 7:00 AM 0.00 0.0 M M M
6/19/2010 8:00 AM 0.00 0.0 M M M cloudy
6/20/2010 7:00 AM T M M M M slight sprinkles in evening,nothing measurable. patchy clouds @ 7am.
6/21/2010 7:00 AM T M M M M few sprinkles late afternoon.
6/22/2010 7:00 AM 0.26 M M M M Thunder @ 2:30p.m. Rain w/pea to marble size hail. Clear & sunny @ 7a.m.
6/23/2010 7:00 AM 0.00 0.0 M M M
6/24/2010 7:00 AM 0.00 0.0 M M M
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 6:40 AM 0.00 0.0 M M M
6/27/2010 7:00 AM 0.09 M M M M storm moved thru @ 4:50p.m.w/thunder/lightning. no hail recorded. 7a.m.obs. clear and sunny
6/28/2010 7:00 AM 0.00 0.0 M M M
6/29/2010 7:00 AM 0.00 0.0 M M M
6/30/2010 7:00 AM 0.00 0.0 M M M
7/1/2010 7:00 AM 0.00 0.0 M M M
7/2/2010 7:00 AM T M M M M Few sprinkles late evening. 65.8F partly cloudy
7/3/2010 7:00 AM 0.04 M M M M rain showers @ 3pm
7/4/2010 7:00 AM 0.01 M M M M aftrn showers @3:45pm. Thunder @ 5:15a.m. no precip. recorded in gauge.
7/5/2010 7:00 AM 0.78 M M M M pea sized hail mixed/rain in aftrn.
7/6/2010 7:00 AM 0.00 0.0 M M M 54.1F Clear skies
7/7/2010 7:00 AM 0.03 M M M M showers overnite. .03 meas. precip. overcast, cloudy 54.4F
7/8/2010 7:00 AM 0.09 M M M M 55F
7/9/2010 7:00 AM 0.02 M M M M
7/10/2010 7:00 AM 0.00 0.0 M M M
7/11/2010 7:00 AM 0.00 0.0 M M M 56F sunny skies
7/12/2010 7:00 AM 0.00 0.0 M M M
7/13/2010 7:00 AM 0.00 0.0 M M M
7/14/2010 7:00 AM T 0.0 M M M
7/15/2010 6:40 AM 0.02 M M M M thunderstorms @5p.m lasting about 1/2hr. .02 precip. hi clouds @6:40am temp. 61.2F
7/16/2010 6:40 AM 0.00 0.0 M M M
7/17/2010 7:00 AM 0.00 0.0 M M M
7/18/2010 7:00 AM 0.00 0.0 M M M
7/19/2010 7:45 AM 0.05 M M M M
7/20/2010 6:40 AM 0.08 M M M M rain began @4:15pm lasting approx. 20min.accomp. by strong lightning/thunder .08 precip. registered in gauge.cloudy this a.m. 62.1F
7/21/2010 7:00 AM 0.04 M M M M showers off & on thru out the day/evening
7/22/2010 7:00 AM 0.04 M M M M
7/23/2010 7:45 AM 0.02 M M M M
7/24/2010 7:00 AM 0.00 0.0 M M M
7/25/2010 7:00 AM 0.00 0.0 M M M
7/26/2010 8:00 AM 0.00 0.0 M M M
7/27/2010 7:00 AM 0.00 0.0 M M M 65.5F
7/28/2010 7:00 AM 0.02 M M M M
7/29/2010 7:00 AM T M M M M
7/30/2010 7:00 AM 0.06 M M M M
7/31/2010 7:00 AM 0.00 0.0 M M M
8/1/2010 7:00 AM 0.00 0.0 M M M
8/2/2010 7:00 AM T M M M M
8/3/2010 6:30 AM 0.02 M M M M
8/4/2010 6:45 AM T M M M M
8/5/2010 6:45 AM T M M M M
8/6/2010 7:00 AM 0.00 0.0 M M M
8/7/2010 7:00 AM 0.01 M M M M
8/8/2010 7:00 AM 0.01 M M M M
8/9/2010 7:00 AM T M M M M very lite showers this a.m. 66.4F
8/10/2010 7:00 AM 0.14 M M M M
8/11/2010 7:00 AM 0.00 0.0 M M M
8/12/2010 7:00 AM 0.00 0.0 M M M
8/13/2010 6:40 AM 0.00 0.0 M M M
8/14/2010 7:00 AM 0.00 0.0 M M M
8/15/2010 7:00 AM 0.00 0.0 M M M
8/16/2010 7:50 AM 0.29 M M M M quick heavy rain w/pea sized hail in early evening lasting about 20 min. .29 recorded in gauge. fog this morning 61F
8/17/2010 7:00 AM 0.74 M M M M 53.4F Heavy rain and wind @5:50 thru 6:25pm. .74 recorded in gauge, minor flooding of streets.
8/18/2010 7:00 AM 0.00 0.0 M M M
8/19/2010 7:00 AM 0.00 0.0 M M M
8/20/2010 7:00 AM 0.06 M M M M
8/21/2010 7:00 AM 0.00 0.0 M M M
8/22/2010 7:00 AM 0.00 0.0 M M M
8/23/2010 6:30 AM 0.00 0.0 M M M 68.5F few high clouds.
8/24/2010 7:00 AM 0.20 M M M M lite rain continuing @ 7a.m. 54.1F
8/25/2010 7:00 AM 0.01 M M M M rain stopped yesterday a.m. .01 in gauge. sunny/dry today 54.7F
8/26/2010 7:00 AM 0.00 0.0 M M M 55.8F clear skies
8/27/2010 7:00 AM 0.00 0.0 M M M
8/28/2010 7:00 AM 0.00 0.0 M M M
8/29/2010 7:00 AM T M M M M
8/30/2010 7:00 AM 0.00 0.0 M M M
8/31/2010 7:00 AM 0.03 M M M M
9/1/2010 7:00 AM T M M M M A few sprinkles yesterday. 52.4F
9/2/2010 6:40 AM 0.00 0.0 M M M
9/3/2010 6:45 AM 0.00 0.0 M M M cool morning, clear skies 45.7F
9/4/2010 7:00 AM 0.00 0.0 M M M
9/5/2010 7:00 AM 0.00 0.0 M M M
9/6/2010 7:00 AM 0.00 0.0 M M M 55.2F sunny and calm
9/7/2010 5:45 AM 0.00 0.0 M M M 42.5F
9/8/2010 6:45 AM 0.00 0.0 M M M
9/9/2010 7:00 AM 0.09 M M M M
9/10/2010 7:00 AM 0.00 0.0 M M M
9/13/2010 7:00 AM 0.00 0.0 M M M
9/16/2010 7:00 AM 0.00 0.0 M M M
9/17/2010 7:00 AM 0.00 0.0 M M M
9/18/2010 7:00 AM 0.01 M M M M drizzle
9/19/2010 7:00 AM T 0.0 M M M fog 43.2F
9/20/2010 7:00 AM 0.00 0.0 M M M
9/21/2010 7:00 AM 0.00 0.0 M M M
9/22/2010 7:00 AM 0.03 M M M M thunder preceeded rain @ 10:30p.m.
9/23/2010 7:00 AM 0.03 M M M M 53.8F, light winds,party cloudy
9/24/2010 7:00 AM 0.00 0.0 M M M
9/25/2010 7:00 AM 0.00 0.0 M M M
9/26/2010 7:00 AM 0.00 0.0 M M M
9/27/2010 7:00 AM 0.00 0.0 M M M
9/28/2010 7:00 AM 0.00 0.0 M M M
9/29/2010 7:00 AM 0.00 0.0 M M M
9/30/2010 7:00 AM 0.00 0.0 M M M 47.3F clear skies



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