356
WWUS76 KSEW 161928
NPWSEW
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
1228 PM PDT THU APR 16 2026
WAZ308-309-318>320-170500-
/O.NEW.KSEW.FR.Y.0006.260417T0800Z-260417T1600Z/
FOOTHILLS AND VALLEYS OF PIERCE AND SOUTHERN KING COUNTIES-
FOOTHILLS AND VALLEYS OF THURSTON AND LEWIS COUNTIES-LOWLANDS OF
LEWIS AND SOUTHERN THURSTON COUNTIES-MIDDLE CHEHALIS RIVER VALLEY-
WILLAPA AND BLACK HILLS-
INCLUDING MCCLEARY, ELK PLAIN, GRAND MOUND, CHEHALIS, PE ELL,
MORTON, MONTESANO, MOSSYROCK, SOUTH HILL, PRAIRIE RIDGE, FORDS
PRAIRIE, ROCHESTER, ELMA, LEA HILL, COVINGTON-SAWYER-W, MAPLE
VALLEY, AND ENUMCLAW
1228 PM PDT THU APR 16 2026
..FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY
* WHAT...TEMPERATURES AS LOW AS 33 TO 36 WILL RESULT IN FROST
FORMATION.
* WHERE...MIDDLE CHEHALIS RIVER VALLEY, FOOTHILLS AND VALLEYS OF
PIERCE AND SOUTHERN KING COUNTIES, FOOTHILLS AND VALLEYS OF
THURSTON AND LEWIS COUNTIES, LOWLANDS OF LEWIS AND SOUTHERN
THURSTON COUNTIES, AND WILLAPA AND BLACK HILLS.
* WHEN...FROM 1 AM TO 9 AM PDT FRIDAY.
* IMPACTS...FROST COULD HARM SENSITIVE OUTDOOR VEGETATION. SENSITIVE
OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD.
JD
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