Public Information Statement
Issued by NWS Pendleton, OR

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NOUS46 KPDT 041920
PNSPDT

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OREGON
1220 PM PDT THU SEP 4 2014

...MONTH IN REVIEW FOR NORTHEAST OREGON AND SOUTHEAST WASHINGTON FOR
THE MONTH OF AUGUST 2014...

I.  TEMPERATURE AND PRECIPITATION OVERVIEW

     AUGUST 2014 AVERAGE TEMPERATURES WERE ABOVE NORMAL ACROSS MOST
OF THE REGION WITH SOME LOCATIONS AS MUCH AS 5 DEGREES ABOVE NORMAL.
A FEW LOCATIONS IN EAST-CENTRAL OREGON REPORTED NEAR TO SLIGHTLY
BELOW NORMAL TEMPERATURES FOR THE MONTH. TOTAL PRECIPITATION WAS
WELL ABOVE NORMAL FOR MOST LOCATIONS DUE TO THUNDERSTORMS PRODUCING
HEAVY RAIN. A FEW SCATTERED LOCATIONS REPORTED BELOW NORMAL
PRECIPITATION FOR THE MONTH.


AUGUST 2014 DATA AND DEPARTURE FROM NORMAL FOR SELECTED CITIES:

                   MAX   DEP    MIN   DEP    AVE   DEP   PCPN    DEP
                  TEMP  NORM   TEMP  NORM   TEMP  NORM   TOTL   NORM
YAKIMA            90.5  +3.7   57.8  +6.0   74.2  +4.9   0.90  +0.64
KENNEWICK         91.9  +2.6   65.2  +4.4   78.5  +3.5   0.36  +0.18
WALLA WALLA       90.2  +2.1   63.7  +3.3   77.0  +2.8   0.29  -0.28
THE DALLES        91.5  +4.2   63.5  +4.0   77.5  +4.1   0.24  +0.01
REDMOND           84.8  +0.0   48.5  +3.3   66.7  +1.7   0.96  +0.46
PENDLETON AIRPORT 89.1  +2.3   58.3  +1.5   73.7  +1.9   0.61  +0.23
LA GRANDE         87.2  +1.5   55.7  +3.4   71.5  +2.5   0.27  -0.58


II.  SELECTED RECORDS

     THUNDERSTORMS DURING THE MONTH OF AUGUST BROUGHT PERIODS OF
HEAVY RAINFALL ACROSS THE REGION. SEVERAL WEATHER STATIONS BROKE
24-HOUR PRECIPITATION RECORDS ON AUGUST 13TH. MEACHAM, OREGON
REPORTED 0.43 INCHES OF PRECIPITATION FROM MIDNIGHT TO MIDNIGHT ON
AUGUST 13TH. THIS BROKE THE PREVIOUS RECORD OF 0.28 INCHES SET IN
1999. THE FOLLOWING TABLE LISTS COOPERATIVE WEATHER STATIONS, THE
24-HOUR PRECIPITATION TOTAL ENDING THE MORNING OF THE 13TH AND THE
PREVIOUS RECORD.

CITY                      PREVIOUS RECORD     NEW RECORD
ANTELOPE, OR              0.06 IN 1987        0.78
CONDON, OR                0.24 IN 1987        0.66
MADRAS, OR                0.17 IN 1987        0.28
PELTON DAM, OR            0.05 IN 1987        0.20
SISTERS, OR               0.09 IN 2004        0.10
MOUNT ADAMS RS, WA        0.07 IN 1976        0.73

     THE MONTH OF AUGUST WAS WARMER THAN NORMAL FOR MOST OF EASTERN
OREGON AND EASTERN WASHINGTON. SEVERAL WEATHER STATIONS REPORTED
MONTHLY MINIMUM TEMPERATURES IN THE TOP 10 WARMEST MONTHLY MINIMUM
TEMPERATURES ON RECORD FOR THE MONTH OF AUGUST. THE FOLLOWING TABLE
LISTS THE WEATHER STATION, AUGUST 2014 MONTHLY MINIMUM TEMPERATURE,
RANK AND THE HIGHEST MONTHLY MINIMUM TEMPERATURE ON RECORD.

CITY                    AUG 2014 MIN T     RANK     RECORD
OCHOCO RS, OR           43.5               9        45.1 IN 2004
CLE ELUM, WA            53.9               8        58.8 IN 2000
WALLA WALLA, WA         63.7               7        66.5 IN 1977
FOSSIL, OR              50.5               6        54.7 IN 1977
MORO, OR                56.5               6        57.7 IN 2004
PENDLETON EXP ST, OR    54.0               6        55.1 IN 1977
BICKLETON, WA           57.7               6        59.5 IN 1961
HEPPNER, OR             56.7               4        58.3 IN 2004
PELTON DAM, OR          55.5               4        56.9 IN 2004
PENDLETON DOWNTOWN, OR  56.5               4        58.7 IN 2004
THE DALLES, OR          63.5               4        64.2 IN 1967
WHITMAN MISSION, WA     55.3               4        57.2 IN 2004
BEND, OR                50.7               2        50.8 IN 2004
SISTERS, OR             47.7               2        47.8 IN 2004
GOLDENDALE, WA          53.7               2        55.1 IN 2004
YAKIMA, WA              57.8               2        58.3 IN 1977
LA GRANDE, OR           55.7 (TIED)        1        55.7 IN 1999
MT ADAMS RS, WA         52.7 (TIED)        1        52.7 IN 2004

TWO STATIONS BROKE THE RECORD MONTHLY MINIMUM TEMPERATURE FOR THE
MONTH OF AUGUST. CONDON, OREGON REPORTED 55.2 DEGREES, WHICH BROKE
THE RECORD OF 55.1 SET IN AUGUST OF 1961. KENNEWICK, WASHINGTON
REPORTED 65.2 DEGREES, WHICH BROKE THE RECORD OF 64.5 DEGREES SET IN
AUGUST OF 2004.

     SEVERAL STATIONS REPORTED 100-DEGREE TEMPERATURES FOR SEVERAL
DAYS DURING THE SUMMER OF 2014. FIVE STATIONS REPORTED THEIR TOP TEN
LONGEST CONSECUTIVE DAYS OF 99 DEGREES OR HIGHER ON RECORD ENDING IN
JULY OR AUGUST 2014. WALLA WALLA REPORTED 5 DAYS OF 99 DEGREES OR
HIGHER ENDING JULY 16TH, THIS WAS THE 10TH LONGEST STRETCH OF DAYS
99 DEGREES OR HIGHER. THE RECORD FOR WALLA WALLA IS 14 DAYS SET IN
1981. BICKLETON REPORTED 1 DAY OF 99 DEGREES OR HIGHER ON JULY 17TH,
THIS WAS THE 9TH LONGEST STRETCH OF DAYS 99 DEGREES OR HIGHER. THE
RECORD FOR BICKLETON IS 3 DAYS SET IN 1941. LA GRANDE REPORTED 3
DAYS OF 99 DEGREES OR HIGHER ENDING JULY 30TH, THIS WAS THE 8TH
LONGEST STRETCH OF DAYS 99 DEGREES OR HIGHER. THE RECORD FOR LA
GRANDE IS 6 DAYS SET IN 1967. YAKIMA REPORTED 6 DAYS OF 99 DEGREES
OR HIGHER ENDING AUGUST 1ST, THIS WAS THE 6TH LONGEST STRETCH OF
DAYS 99 DEGREES OR HIGHER. THE RECORD FOR YAKIMA IS 8 DAYS SET IN
2013. GOLDENDALE REPORTED 5 DAYS OF 99 DEGREES OR HIGHER ENDING
AUGUST 2ND. THE RECORD FOR GOLDENDALE IS 7 DAYS SET IN 2001.

III.  SIGNIFICANT WEATHER

     A WEATHER DISTURBANCE PASSED TO THE NORTH WHILE A SECOND
DISTURBANCE MOVED INTO SOUTH-CENTRAL OREGON DURING THE AFTERNOON OF
THE 2ND. THIS BROUGHT AFTERNOON THUNDERSTORMS ACROSS NORTH-CENTRAL
OREGON AND INTO CENTRAL WASHINGTON. THUNDERSTORMS PRODUCED LARGE
HAIL ACROSS CENTRAL OREGON. THE FOLLOWING TABLE LISTS LOCATION, TIME
OF THE REPORT AND HAIL SIZE OF SELECTED STORM REPORTS FROM AUGUST
2ND.

LOCATION                  TIME     HAIL SIZE
25 NW WARM SPRINGS, OR    510 PM   1.25 INCHES
BEND, OR                  533 PM   1.00 INCH
ENE BEND, OR              537 PM   1.75 INCHES
1 SE BEND, OR             540 PM   1.25 INCHES
BEND, OR                  540 PM   2.00 INCHES
7 SE BEND, OR             736 PM   1.00 INCH

     A LOW PRESSURE SYSTEM IMPACTED THE REGION BETWEEN AUGUST 12TH
AND 14TH. A SOUTHWEST FLOW AHEAD OF THE LOW BROUGHT AFTERNOON
THUNDERSTORMS ON THE 12TH. THESE THUNDERSTORMS PRODUCED HEAVY RAIN
IN CENTRAL OREGON AND IN SOUTH CENTRAL WASHINGTON. A WEATHER SPOTTER
IN CONDON REPORTED A HALF INCH OF RAIN IN 15 MINUTES, WHILE A
SPOTTER 5 MILES SOUTHEAST OF CLIFFDELL REPORTED 1.50 INCHES OF RAIN.
THESE STORMS ALSO PRODUCED VERY STRONG WINDS ACROSS THE COLUMBIA
BASIN. BLOWING DUST REDUCED VISIBILITIES TO LESS THAN A QUARTER MILE
IN HERMISTON AND LESS THAN A HALF MILE IN KENNEWICK. WIND GUSTS UP
TO 68 MPH WERE REPORTED 14 MILES NORTH-NORTHWEST OF WEST RICHLAND
AND WINDS GUSTED UP TO 46 MPH IN PENDLETON. A TREE WAS UPROOTED 10
MILES WEST-NORTHWEST OF PENDLETON WHILE A 3200 POUND SHED WAS MOVED
20 FEET NEAR RICHLAND.
     THE LOW PRESSURE SYSTEM MOVED INLAND ACROSS THE AREA ON THE
13TH AND 14TH. THUNDERSTORMS CONTINUED TO DEVELOP ACROSS THE REGION,
BRINGING HEAVY RAIN AND LARGE HAIL. A SMALL TORNADO TOUCHED DOWN IN
AN OPEN FIELD 10 MILES EAST OF SUNNYSIDE DURING THE LATE AFTERNOON
ON THE 13TH. SMALL HAIL ACCUMULATED TO A DEPTH OF 2 INCHES IN
MEACHAM, WHILE HAIL UP TO 1.75 INCHES FELL 7 MILES SOUTHEAST OF
MEACHAM ON THE 13TH. IN BICKLETON, 1.5 INCHES OF RAIN FELL IN ONE
HOUR ON THE 13TH, PLUGGING CULVERTS AND CAUSING STANDING WATER ON
THE ROAD. ON THE 14TH, 0.6 INCHES OF RAIN FELL IN 12 HOURS NEAR
DAYTON, WHILE A SPOTTER 4 MILES EAST OF ELLENSBURG REPORTED 1.25
INCHES OF RAIN FALLING IN 20 MINUTES. HEAVY RAIN WAS REPORTED 10
MILES WEST OF HERMISTON WITH 1.68 INCHES OF RAIN FALLING IN ONE
HOUR. A SPOTTER IN BEND REPORTED 2.46 INCHES OF RAIN IN THE LAST 24
HOURS ENDING AT 541 PM ON THE 14TH.
    THE BICKLETON COOPERATIVE STATION REPORTED A 24-HOUR
PRECIPITATION TOTAL OF 1.56 INCHES ENDING THE MORNING OF THE 14TH.
THIS WAS A RECORD 24-HOUR TOTAL FOR THE STATIONS. THE PREVIOUS
RECORD WAS 0.18 INCHES SET IN 1979. WITH ADDITIONAL RAINFALL FROM
THUNDERSTORMS AT THE END OF THE MONTH, BICKLETON REPORTED A MONTHLY
TOTAL OF 2.22 INCHES, BREAKING THE PREVIOUS RECORD OF 2.14 INCHES
SET IN 1968.






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