Friday, July 21, 2017

Weather & Climate Data


Weather observation and data for
Oroville, WA and vicinity.

WSU - Ag Weather Network - East Oroville
Longest period with no precipitation:
2014 = 25 days; 2015 = 34 days;
2016 = 29 days; 2017 = 19 days.
Day 19 w/o precip currently.

INFO: Weather data is observed and collected on
a "weather" year starting on October 1st thru
September 30th.

CoCoRaHS weather data for WA-OK-5
Readings are usually taken at 6:00 a.m.

(Month's data page link above is updated daily.)

NEXT REPORT will be on July 25th

* = Value may be adjusted.

BURN BAN IN EFFECT! - Fire Weather Watch issued!

Fri     57*      Clear & calm.
Thu   67  83 Mostly clear. Light breeze.
                    Isolated  Storm left a TRACE of PRECIP.
Wed  61  91 Mostly clear. Light air.
                    Relative humidity - 30%
                    Day 301w/o Precip. 
Tue   58  88 Smokey skies. Calm. 
                    Relative humidity - 31%
                    Day 30 w/o Precip. 
Mon 62  81 Clear. Light air.
                    Lowest Mean /averageTemp at 70.1 deg.
                    Relative humidity - 34%
                    Day 29 w/o Precip. 
Sun  68  83  Clear. Light breeze.
                    Relative humidity - 29%
                    Day 28 w/o Precip. 
Sat   63  95  Sunny w/some wind.
                    Relative humidity - 27%
                    Day 27 w/o Precip. 
Fri    64  93  Clear. Light air.
                    Relative humidity - 27%
                    Day 26 w/o Precip. 
                                                                                                                
March - May = 7.58 inches or 49.2%
April - May precip. = 5.89 inches or 39.4%
of 2016-17 precipitation.

July Precipitation
1/20 = 5.0%
Precip. of Trace + SWE of 0.00 = Trace
Max. Precip. in 24 Hrs. = Trace
31 consecutive days w/o precip.

WA-OK-5 - 2017
69/201 = 34.3% 
Precip. of 8.85 & SWE of 1.42 = 10.27
31 days in a row w/o precip./swe.
Max. Precip. in 24 Hrs. = .93
Max. SWE in 24 Hrs. = .39
Snowfall to date 16.9 inches.

WA-OK-5 - 2016
118/366 = 32.2%
Precip. & SWE = 13.50 + 1.25 = 14.75
Max. Precip. in 24 Hrs. = .60
Max. SWE in 24 Hrs. = .31
The 3rd wettest year in the past 17.

CoCoRaHS 2016-17 (Oct.-Sept.)
113/291 = 38.8%  Precipitation/SWE.
Precip. of 13.61 + SWE of 1.79 = 15.40
Max. Precip. in a 24 Hr. period = .93 inches.
Max. 31 days in a row w/o precipitation. 
Max. SWE in a 24 Hr. period = .21 inches.
Total snowfall = 26.1 inches or 66.29 CM

CoCoRaHS 2015-16 (Oct.-Sept.)
109/366 = 29.8%  Precipitation/SWE.
Precip. of 13.49 + SWE of 1.91 = 15.38
                       or
CoCoRaHS 2014-15 (Oct.-Sept.)
Yearly: 10.32 + 2.09 = 12.41
                       or
CoCoRaHS 2013-14 (Oct.-Sept.)
Yearly: 8.30 + 21.27 = 9.57

WSU-AWN WINDRUN:
July: High            95.2   - Low   43.2 Avg. =   68.4
Year 2017: High: 244.5 - Low:  12.1 Avg. =   75.1*
   (*Some WSU-AWN data is missing for 2017)
Year 2016: High: 249.4 - Low:  9.9  Avg. =   89.5
Year 2015: High: 375.2 Low: 20.8  Avg. = 101.4
Year 2014: High: 354.1 - Low: 16.2. Avg. = 104.3
Year 2013: High: 259.2 - Low: 21.6. Avg. =   98.3
Year 2012: High: 231.7 - Low: 18.9. Avg. =   97.9
Year 2011: High: 286.3 - Low: 38.0. Avg. = 105.5

Monthly Condition:
July:    High temp at 99. Day 31 w/o Precip.
June:  .15 in one day! Total to date: .49 of an inch.
             High temp at 94.
May:   2.09 inches of precip! .77 in one day!
           We are at Day 10 in a row w/o precipitation.
April:  The rain came after 6 days w/o precip.
     .93 in one day. 3.80 inches of precip. for the month!
            The wettest month in the 2016-17 Weather year.
March:   Ice melted on the lake on 3/25. Snowfall = 
               3.5 inches.
February:  Low to 10. High to 43. Heavy rain & flooding.
                2.8 inches of snow this month.
January: 6.5 inches of snow this month.
          Low temp record at -1 F. and 6 days later at 37.

Snowfall and SWE (snow/water equivalent)
Regular snowfall readings are taken from
October 1st through March 31st.
2016-17 =  26.1 inches or 66.3 cm. (2)
2015-16 = 19.2 inches or 48.8 cm. (3)
2014-15 =   9.9 inches or 25.2 cm. (6)
2013-14 = 14.3 inches or 36.3 cm. (5)
2012-13 = 31.9 inches or 81.0 cm. (1)
2011-12 = 16.6 inches or 44.7 cm. (4)
2010-11 =   9.1 inches or 25.7 cm. (7)