High Wind in Oregon, March 11 to 13, 2003

NORTHWEST OREGON AND SOUTHWEST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PORTLAND OR
830 AM PST TUE MAR 11 2003

.SYNOPSIS...A WEAK FRONT WILL MOVE ACROSS THE FORECAST AREA TODAY.
MOIST ONSHORE FLOW WILL CONTINUE BEHIND FRONT EARLY TONIGHT BEFORE
THE NEXT WARM FRONT MOVES ACROSS THE NORTH PART OF THE AREA LATE
TONIGHT AND EARLY WED. A STRONG PACIFIC FRONT WILL APPROACH THE COAST
WED...STALLING OFFSHORE WED NIGHT...THEN PUSHING ACROSS THE AREA THU.
THE NEXT STRONG FRONT IS EXPECTED TO MOVE ACROSS THE AREA FRI. MOIST
ONSHORE FLOW WILL GIVE A SHOWERY PATTERN OVER THE WEEKEND.

.DISCUSSION...
.SHORT TERM...MODELS CONTINUE FAIRLY CLOSE THROUGH THU. A WEAK FRONT
MOVES OVER AREA TODAY WITH SATELLITE AND RADAR FAVORING NORTHERN
ZONES WITH BEST PRECIPITATION. MOIST ONSHORE FLOW CONTINUES THIS
EVENING THEN THE NEXT WARM FRONT MOVES ACROSS N PART OF AREA LATE
TONIGHT AND EARLY WED. THE ADVERTIZED STRONG FRONT APPROACHES THE
COAST WED AND STALLS OFFSHORE AS JET STARTS TO SPLIT TO THE SOUTH.
NORTHERN JET SEGMENT WITH A 130 KT CORE IN GFS/MESO ETA SUPPORT
COASTAL HIGH WINDS AS WELL AS PULLING MILD AIR MASS WITH HIGH
PRECIPITABLE WATER NORTH INTO THE AREA. THIS SHOULD GIVE HEAVY RAIN
TO THE COAST WITH SOUTHERN WA CASCADES ALSO VULNERABLE TO THE STRONG
850 MB SOUTH TO SOUTHWEST FLOW. WITH HIGH FREEZING LEVELS WILL NEED
TO WATCH RIVER FOR POSSIBLE PROBLEMS WED NIGHT AND THU. THE STRONG
FRONTAL GRADIENT SHOULD ENABLE THE STRONG 850 MB WINDS TO APPROACH
THE SURFACE AND CURRENT HIGH WIND WATCH LOOKS GOOD FOR WIND GUSTS AT
COAST NEAR 75 MPH WED AFTERNOON INTO THU. MODELS APPEAR TO PUSH FRONT
EAST OF AREA LATE THU.

.LONG TERM...NO CHANGES. WILLIS

AST 9++++  PDX 9989+  SLE 9889+  EUG 7877+

.PQR...HIGH WIND WATCH COAST WED THROUGH THU.
       STORM WARNING CAPE SHOALWATER TO FLORENCE WED.

ORZ001>013-WAZ019>023-039-040-121430-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PORTLAND OREGON
630 AM PST TUE MAR 11 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST OREGON AND SOUTHWEST
WASHINGTON.

.DAY ONE... TODAY

FLOOD WARNING CONTINUES FOR THE PUDDING RIVER.  THE RIVER IS STILL
SLIGHTLY ABOVE FLOOD STAGE BUT WILL DROP BELOW FLOOD STAGE LATER
TODAY.

.DAYS TWO THROUGH SEVEN... WEDNESDAY THROUGH MONDAY

STORM FORCE WINDS POSSIBLE MARINE AREA WEDNESDAY AND THURSDAY.
HIGH WIND WATCH IS IN EFFECT FOR AREAS ALONG THE COAST WEDNESDAY AND
THURSDAY FOR STRONG WINDS.
SIGNIFICANT RISES POSSIBLE OF RIVER LEVELS OVER PART OF AREA DUE TO
POTENTIAL HEAVY RAIN AND HIGH FREEZING LEVELS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO SKYWARN PROCEDURES.

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