Area Forecast Discussion
Issued by NWS Seattle/Tacoma, WA

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000
FXUS66 KSEW 262124
AFDSEW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
300 PM PDT THU MAR 26 2015

.SYNOPSIS...AN UPPER RIDGE WILL SHIFT EAST THROUGH FRIDAY. A COLD
FRONT WILL MOVE THROUGH WESTERN WASHINGTON FRIDAY NIGHT. A WEAK
UPPER RIDGE WILL STEER WEATHER SYSTEMS INTO BRITISH COLUMBIA OVER
THE WEEKEND. A COLD FRONT WILL REACH WESTERN WASHINGTON LATE MONDAY.

&&

.SHORT TERM...THE UPPER RIDGE WILL SHIFT EAST THROUGH FRIDAY AS A
COLD FRONT APPROACHES. THE COLD FRONT WILL MOVE THROUGH THE AREA
FRIDAY NIGHT. A FEW SHOWERS WILL PETER OUT SATURDAY MORNING AND A
PSCZ MAY LINGER FOR A FEW HOURS. A WARM FRONT WILL BRUSH THE NORTH
COAST OVER THE WEEKEND BUT MOST OF WESTERN WA SHOULD BE MILD AND DRY.

.LONG TERM...THE NORTH WA COAST WILL PROBABLY SEE PERIODS OF RAIN
OVER THE WEEKEND WHILE THE SOUTH WA COAST AND INLAND PORTIONS OF
WESTERN WA SHOULD BE DRY AND MILD. THE RIDGE WILL GIVE OUT ON MONDAY
AND A COLD FRONT WILL REACH THE AREA LATE MONDAY. THAT FRONT WILL BE
FOLLOWED BY A PERIOD OF FAIRLY ZONAL FLOW AND COLD AIR ALOFT.

&&

.HYDROLOGY...FLOODING IS UNLIKELY THE NEXT 7 DAYS.

&&

.AVIATION...AN UPPER LEVEL RIDGE OVER THE PAC NW WILL BRING DRY AND
STABLE WEATHER TO WESTERN WA TONIGHT. THE FLOW ALOFT IS WESTERLY.
PATCHY LOW CLOUDS AND FOG ARE POSSIBLE IN THE SOUTH SOUND OVERNIGHT.
THE RIDGE WILL EXIT EAST ON FRIDAY AS A COLD FRONT MOVES INLAND.
RAIN WILL REACH THE COAST BY 00Z SAT. 33

KSEA...VFR CONDITIONS TONIGHT WITH LIGHT SURFACE WINDS. 33

&&

.MARINE...WEAK HIGH PRESSURE WILL BUILD OVER WESTERN WA TONIGHT FOR
GENERALLY LIGHT WINDS OVER THE WATERS. A COLD FRONT WILL MOVE INLAND
LATE FRIDAY AFTERNOON OR EVENING. ONSHORE FLOW WILL INCREASE BEHIND
THIS FRONT FRIDAY NIGHT WITH SMALL CRAFT ADVISORY WINDS FORECAST
THROUGH THE CENTRAL/EAST STRAIT OF JUAN DE FUCA...AND PUGET SOUND
AND HOOD CANAL. HIGH PRESSURE WILL REBUILD OVER THE REGION ON
SATURDAY. A FRONTAL BOUNDARY WILL STALL OVER SOUTHERN B.C. ON
SUNDAY...WITH SMALL CRAFT ADVISORY WINDS POSSIBLE OVER THE COASTAL
WATERS. 33

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...NONE.
PZ...NONE.

&&

$$

YOU CAN SEE AN ILLUSTRATED VERSION OF THIS FORECAST DISCUSSION AT
WWW.WEATHER.GOV/SEATTLE/GAFD/LATEST_WEBAFD.HTML




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