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FGUS76 KPDT 122109
ESFPDT
ORZ050-502-507-WAZ029-521>523-132000-
HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
209 PM PDT THU MAR 12 2026
...RIVERS RISING IN THE WASHINGTON CASCADES AND BLUE MOUNTAINS
THROUGH THIS WEEKEND...
HEAVY RAIN AND MOUNTAIN SNOW THROUGH FRIDAY EVENING FOLLOWED BY
UNUSUALLY WARM TEMPERATURES THIS WEEKEND WILL LEAD TO HIGH WATER
LEVELS ON MANY MOUNTAIN STREAMS AND RIVERS.
CURRENTLY THE GRANDE RONDE RIVER AT TROY, THE UMATILLA RIVER AT
GIBBON, THE WALLA WALLA RIVER AT TOUCHET, THE KLICKITAT RIVER NEAR
PITT AND THE NACHES RIVER AT NACHES ARE ALL FORECAST TO REACH ACTION
STAGE BY FRIDAY EVENING AND CONTINUE INTO THE WEEKEND BEFORE
RECEDING IN THE LATE WEEKEND OR EARLY NEXT WEEK. AT THIS TIME, THESE
LOCATIONS ARE NOT EXPECTED TO REACH MINOR FLOOD STAGE. OTHER STREAMS
AND RIVERS WILL HAVE RISES BUT REMAIN WITHIN THEIR BANKS.
THERE IS SOME UNCERTAINTY IN THE RAIN AND SNOW AMOUNTS THROUGH
TOMORROW AND TEMPERATURES THIS WEEKEND BUT CONFIDENCE IN RIVER
LEVELS IS GOOD (60-80%). ADDITIONALLY, WATER TEMPERATURES HAVE
DROPPED TO THE LOWER 40S, SO THE CHANCES OF HYPOTHERMIA WILL BE
INCREASED FOR ANYONE FALLING INTO RIVERS OR STREAMS.
GP
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