Full Notification

NATIONAL WEATHER SERVICE PORTLAND OR
337 AM PDT TUE APR 30 2013

...CHILLY NIGHT ON TAP TONIGHT FOR THE VALLEYS OF SOUTHWEST WASHINGTON AND NORTHWEST OREGON...

.AFTER A BRISK SPRING DAY TODAY...STRONG HIGH PRESSURE WILL BUILD INTO THE PACIFIC NORTHWEST TONIGHT AND WEDNESDAY. SKIES WILL CLEAR QUICKLY LATE THIS AFTERNOON INTO THIS EVENING AS WINDS DIE DOWN. THIS WILL SET UP NEAR IDEAL CONDITIONS FOR TEMPERATURES TO FALL RAPIDLY THIS EVENING. FROST WILL BE COMMON LATE TONIGHT AND WEDNESDAY MORNING IN THE VALLEYS OF SOUTHWEST WASHINGTON AND NORTHWEST OREGON AWAY FROM URBAN AREAS. TEMPERATURES WILL BE COLDER IN THE UPPER HOOD RIVER VALLEY...BOTTOMING OUT IN THE 20S WITH SEVERAL HOURS OF SUBFREEZING TEMPERATURES POSSIBLE.

...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM PDT WEDNESDAY FOR THE COAST AND VALLEYS OF NORTHWEST OREGON INCLUDING OUTLYING PORTIONS OF THE PORTLAND METRO AREA...AS WELL AS INLAND VALLEYS OF SOUTHWEST WASHINGTON AND THE WESTERN COLUMBIA RIVER GORGE...

THE NATIONAL WEATHER SERVICE IN PORTLAND HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 8 AM PDT WEDNESDAY.

* TEMPERATURE: 30 TO 35 DEGREES...EXCEPT 35 TO 40 DEGREES NEAR URBAN CENTERS.

* TIMING: COLDEST TEMPERATURES WILL OCCUR BETWEEN 2 AM AND 7 AM
WEDNESDAY MORNING.

* LOCATIONS INCLUDE: OUTLYING PORTIONS OF THE GREATER PORTLAND AND VANCOUVER METRO AREA...ASTORIA...TILLAMOOK...NEWPORT...LINCOLN
CITY...FLORENCE...BATTLE GROUND...KELSO...LONGVIEW...SAINT
HELENS...CASTLE OCK...HILLSBORO...SALEM...ALBANY...CORVALLIS...
EUGENE...VERNONIA...CASCADE LOCKS...STEVENSON...AND LOWER ELEVATIONS OF HOOD RIVER

* IMPACTS: SENSITIVE VEGETATION MAY BE DAMAGED IF LEFT UNPROTECTED FROM THE COLD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE DAMAGED IF LEFT UNCOVERED.