Note that if drought conditions are not being experienced, or in the case of river flooding or heavy rain, this statement may be used to indicate river flows or flood potential.
000
FGUS76 KPQR 110354
ESFPQR
ORZ001>014-WAZ019>023-039-040-120000-
HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE PORTLAND OR
754 PM PST MON NOV 10 2008
...FLOODING POSSIBLE OVER SOUTHWEST WASHINGTON AND NORTHWEST
OREGON LATE TUESDAY THROUGH THURSDAY...
...FLASH FLOODING AND DEBRIS FLOWS POSSIBLE FOR BURN AREAS...
A STRONG JET STREAM WILL BRING A SERIES OF VERY WET STORM SYSTEMS
TO THE PACIFIC NORTHWEST BEGINNING TUESDAY. THE FIRST OF THESE
STORMS WILL APPROACH THE WASHINGTON AND OREGON COASTS LATE TONIGHT
AND MOVE ACROSS SOUTHWEST WASHINGTON AND NORTHWEST OREGON TUESDAY
AS THE WARM FRONT MOVES IN. SNOW LEVELS WILL RISE RAPIDLY TUESDAY
AFTERNOON AS THE WARM FRONT PASSES...WITH HEAVY RAIN CONTINUING.
THIS WILL BE FOLLOWED BY ANOTHER SURGE OF TROPICAL MOISTURE THAT
WILL MOVE INTO THE AREA TUESDAY NIGHT AND WEDNESDAY WITH VERY
HEAVY RAIN AND CONTINUING HIGH FREEZING LEVELS.
THE FOCUS AND TIMING OF THE HEAVIEST RAIN IS SOMEWHAT UNCERTAIN AT
THIS TIME. AREAS OF GREATEST POTENTIAL IMPACT THAT MAY HAVE THE
MOST SUSTAINED PERIOD OF HEAVY RAIN INCLUDE THE WILLAPA HILLS...
THE SOUTHERN WASHINGTON CASCADES...THE NORTHWEST OREGON COAST
RANGE...THE NORTH OREGON COAST...AND THE NORTHERN OREGON CASCADES.
RAINFALL AMOUNTS OF 5 TO 8 INCHES OVER HIGHER TERRAIN AND 2 TO 4
INCHES IN THE VALLEYS ARE POSSIBLE FROM TUESDAY THROUGH WEDNESDAY
NIGHT.
IF THE HEAVY FOCUSES ON THE NORTHERN OREGON CASCADES...FLASH
FLOODING OR DEBRIS FLOWS WOULD BE POSSIBLE FOR CREEKS DRAINING
BURN AREAS FROM THIS PAST SUMMER...SUCH AS GNARL RIDGE OR KITSON.
MINOR DEBRIS FLOWS HAVE OCCURRED IN WEAKER EVENTS EARLIER THIS
FALL.
YOU SHOULD REMAIN ALERT TO THE POSSIBILITY OF HEAVY RAIN WHICH
COULD CAUSE RIVERS AND STREAMS TO RISE VERY RAPIDLY DURING THIS
EVENT. IN URBAN AREAS...LEAVES ON THE GROUND COULD BLOCK STORM
DRAINS RESULTING IN LOCAL PONDING OF WATER DURING HEAVY RAIN...
POSSIBLY FLOODING INTERSECTIONS AND OTHER LOW LYING AREAS.
MONITOR THE LATEST WEATHER AND RIVER CONDITIONS AND ANY CHANGES TO
THIS EVOLVING EVENT AT WEATHER.GOV/PORTLAND.
$$
