Station Overview Station Location
Station Number OR-UM-14 Latitude 45.9094322
Station Name Umatilla 0.7 WSW Longitude -119.3414021
County Umatilla Elevation (ft) 393



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 0.69 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 09 1.20 0.55 3 0.55 3 0.00 0 0 3 0 0.0 0 0
Dec 09 1.28 0.76 6 0.76 6 0.00 0 0 6 0 2.0 1 2
Jan 10 1.18 1.80 13 1.80 13 0.00 0 0 13 0 0.0 0 0
Feb 10 0.87 0.37 4 0.37 4 0.00 0 0 4 0 0.0 0 0
March 10 0.99 0.21 1 0.21 1 0.00 0 0 1 0 0.0 0 0
April 10 0.75 0.95 2 0.95 2 0.00 0 0 2 0 0.0 0 0
May 10 0.76 1.20 7 1.20 7 0.00 0 0 7 0 0.0 0 0
June 10 0.68 0.90 4 0.90 4 0.00 0 0 4 0 0.0 0 0
July 10 0.22 0.12 1 0.12 1 0.00 0 0 1 0 0.0 0 0
Aug 10 0.26 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 10 0.34 1.05 5 1.05 5 0.00 0 0 4 0 0.0 0 0
Water Year Totals: 9.22" 7.91" 46 days 7.91" 46 0.00" 0 days 0 45 days 0 days 2.0" 1 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 0.11
11/15/2009
11/16/2009
11/17/2009
11/18/2009
11/19/2009
11/20/2009
11/21/2009
11/22/2009 0.18
11/23/2009
11/24/2009
11/25/2009
11/26/2009
11/27/2009 0.26
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 0.07
12/16/2009 0.26
12/17/2009 0.05
12/18/2009 0.04
12/19/2009
12/20/2009
12/21/2009
12/22/2009 0.24
12/23/2009
12/24/2009
12/25/2009
12/26/2009
12/27/2009
12/28/2009
12/29/2009
12/30/2009 0.10
12/31/2009
Day of YearDaily PrcpMultiday Prcp
1/1/2010
1/2/2010 0.28
1/3/2010
1/4/2010
1/5/2010 0.09
1/6/2010 0.03
1/7/2010
1/8/2010
1/9/2010 0.04
1/10/2010
1/11/2010 0.12
1/12/2010
1/13/2010 0.34
1/14/2010
1/15/2010
1/16/2010 0.07
1/17/2010
1/18/2010 0.13
1/19/2010
1/20/2010
1/21/2010
1/22/2010
1/23/2010
1/24/2010
1/25/2010 0.08
1/26/2010 0.04
1/27/2010 0.27
1/28/2010
1/29/2010 0.24
1/30/2010
1/31/2010 0.07
2/1/2010
2/2/2010
2/3/2010
2/4/2010
2/5/2010 0.09
2/6/2010 0.13
2/7/2010
2/8/2010
2/9/2010
2/10/2010
2/11/2010 0.06
2/12/2010
2/13/2010
2/14/2010
2/15/2010
2/16/2010 0.09
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 0.21
3/30/2010
3/31/2010
Day of YearDaily PrcpMultiday Prcp
4/1/2010
4/2/2010
4/3/2010 0.30
4/4/2010
4/5/2010
4/6/2010
4/7/2010
4/8/2010
4/9/2010
4/10/2010
4/11/2010
4/12/2010
4/13/2010
4/14/2010
4/15/2010
4/16/2010
4/17/2010
4/18/2010
4/19/2010
4/20/2010
4/21/2010 0.65
4/22/2010
4/23/2010
4/24/2010
4/25/2010
4/26/2010
4/27/2010
4/28/2010
4/29/2010
4/30/2010
5/1/2010
5/2/2010
5/3/2010
5/4/2010
5/5/2010
5/6/2010
5/7/2010
5/8/2010
5/9/2010
5/10/2010
5/11/2010
5/12/2010
5/13/2010
5/14/2010
5/15/2010
5/16/2010
5/17/2010
5/18/2010 0.31
5/19/2010 0.07
5/20/2010 0.14
5/21/2010
5/22/2010
5/23/2010
5/24/2010
5/25/2010
5/26/2010 0.12
5/27/2010 0.28
5/28/2010 0.18
5/29/2010 0.10
5/30/2010
5/31/2010
6/1/2010
6/2/2010
6/3/2010
6/4/2010 0.34
6/5/2010
6/6/2010
6/7/2010
6/8/2010
6/9/2010 0.20
6/10/2010
6/11/2010 0.19
6/12/2010
6/13/2010
6/14/2010
6/15/2010
6/16/2010
6/17/2010
6/18/2010
6/19/2010 0.17
6/20/2010
6/21/2010
6/22/2010
6/23/2010
6/24/2010
6/25/2010
6/26/2010
6/27/2010
6/28/2010
6/29/2010
6/30/2010
Day of YearDaily PrcpMultiday Prcp
7/1/2010
7/2/2010 0.12
7/3/2010
7/4/2010
7/5/2010
7/6/2010
7/7/2010
7/8/2010
7/9/2010
7/10/2010
7/11/2010
7/12/2010
7/13/2010
7/14/2010
7/15/2010
7/16/2010
7/17/2010
7/18/2010
7/19/2010
7/20/2010
7/21/2010
7/22/2010
7/23/2010
7/24/2010
7/25/2010
7/26/2010
7/27/2010
7/28/2010
7/29/2010
7/30/2010
7/31/2010
8/1/2010
8/2/2010
8/3/2010
8/4/2010
8/5/2010
8/6/2010
8/7/2010
8/8/2010
8/9/2010
8/10/2010
8/11/2010
8/12/2010
8/13/2010
8/14/2010
8/15/2010
8/16/2010
8/17/2010
8/18/2010
8/19/2010
8/20/2010
8/21/2010
8/22/2010
8/23/2010
8/24/2010
8/25/2010
8/26/2010
8/27/2010
8/28/2010
8/29/2010
8/30/2010
8/31/2010
9/1/2010 0.26
9/2/2010
9/3/2010
9/4/2010
9/5/2010
9/6/2010
9/7/2010
9/8/2010
9/9/2010
9/10/2010
9/11/2010
9/12/2010
9/13/2010
9/14/2010
9/15/2010
9/16/2010
9/17/2010
9/18/2010 0.69
9/19/2010 0.06
9/20/2010 0.00
9/21/2010
9/22/2010
9/23/2010
9/24/2010 0.04
9/25/2010
9/26/2010
9/27/2010
9/28/2010
9/29/2010
9/30/2010



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
11/14/2009 7:00 AM 0.11 M M M M
11/22/2009 7:00 AM 0.18 M M M M
11/27/2009 7:00 AM 0.26 M M M M
12/15/2009 7:00 AM 0.07 M M 0.2 0.07 Precipitation was in the form of "freezing rain." Local roadways continue are extremely icy; and, nearby freeway is closed to traffic as of 7:28 am PST
12/16/2009 4:30 AM 0.26 M M M M Local Area Flood Warning issued to Umatilla County during the afternoon. Most flooding occurred in central Umatilla County in areas of Weston and Athena to the east of this observation station. Some large puddling occurred here (City of Umatilla) due to frozen ground unable to accept runnoff.
12/17/2009 4:35 AM 0.05 M M M M
12/18/2009 4:40 AM 0.04 M M M M A total of four (4) rain episodes. From 7pm until 9pm A total of 0.03 inches fell with peaks evenly spaced during the period 7pm to 9pm (0.01 per hour). Another brief period occurred between 2am and 3am, amounting to 0.01 inches.
12/22/2009 4:45 AM 0.24 M M M M
12/30/2009 4:30 AM 0.10 2.0 0.10 2.0 0.10
1/2/2010 7:00 AM 0.28 M M M M
1/5/2010 7:00 AM 0.09 M M M M A short squall at 1:00 pm, but otherwise a light drizzle for the period.
1/6/2010 7:00 AM 0.03 M M M M Scattered light drizzle throughout the day.
1/9/2010 7:00 AM 0.04 M M M M Scattered periods of light rain from 10 pm to 7 am.
1/11/2010 5:30 AM 0.12 M M M M
1/13/2010 7:00 AM 0.34 M M M M Initial drizzle starting at 7pm and lasting about 2 hours; then, persistent rain from 1:45 am to 6:00 am, then returning to light drizzle until end at 7 am.
1/16/2010 7:00 AM 0.07 M M M M Brief period of rain from 8 am - 9am, break until 11 pm, then period of light rain until 1 am, then break and another light rain period from 2:45 - 3:15 am
1/18/2010 7:00 AM 0.13 M M M M Sporadic periods of light rain throughout the period.
1/25/2010 5:20 AM 0.08 M M M M
1/26/2010 5:00 AM 0.04 M M M M
1/27/2010 5:00 AM 0.27 M M M M
1/29/2010 7:00 AM 0.24 M M M M
1/31/2010 7:00 AM 0.07 M M M M Periods of scattered light drizzle from 7:15 pm until 6:30 am.
2/5/2010 7:00 AM 0.09 M M M M
2/6/2010 7:00 AM 0.13 M M M M
2/11/2010 4:30 AM 0.06 M M M M
2/16/2010 5:30 AM 0.09 M M M M
3/29/2010 5:00 AM 0.21 M M M M
4/3/2010 7:00 AM 0.30 M M M M Heavy rain for brief period from 2:30 until 3:00 pm. Localized street flooding. Lowest barometric reading at 2:30 pm for the observing period. Peak rain rate at 3:00 pm was 0.50 in/hour.
4/21/2010 5:00 AM 0.65 M M M M
5/18/2010 5:00 AM 0.31 M M M M
5/19/2010 6:00 AM 0.07 M M M M
5/20/2010 5:00 AM 0.14 M M M M
5/26/2010 5:00 AM 0.12 M M M M
5/27/2010 5:00 AM 0.28 M M M M
5/28/2010 7:00 AM 0.18 M M M M Scattered periods of rain throughout the collecting period.
5/29/2010 7:00 AM 0.10 M M M M General periods of light rain during the observation period.
6/4/2010 5:00 AM 0.34 M M M M Precipitation beginning at 7pm with spikes at 2:30am and 4:30am, and continuing to rain when observation taken at 5:00am prior to leaving for work. Umatilla River which runs through a portion of the city continues to rise, no local flooding at this time.
6/9/2010 5:00 AM 0.20 M M M M
6/11/2010 7:00 AM 0.19 M M M M Brief and intense pop up shower at 5:30 pm, with majority of precipitation occuring in about a 15 minute period.
6/19/2010 8:00 AM 0.17 M M M M
7/2/2010 5:00 AM 0.12 M M M M
9/1/2010 4:30 AM 0.26 M M M M
9/18/2010 9:30 AM 0.69 M M M M Strongest local storm of the summer, with heavy rain and intense lightening.
9/19/2010 8:15 AM 0.06 M M M M Sporadic drizzle, continued heavy overcast and light fog.
9/20/2010 5:07 AM 0.00 0.0 M M M Light and sporadic rainfall. Continuing overcase and very light fog.
9/24/2010 4:30 AM 0.04 M M M M Light. scattered showers over the local area in the past 24 hours. Skies were mostly clear at observation time.



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