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Frost Advisory 0001
Issued by the Seattle Forecast Office

Action Issued Starts Expiration
New 2025-04-03 15:18:55 2025-04-04 02:00:00 2025-04-04 11:00:00
Continued 2025-04-03 21:47:43 2025-04-04 02:00:00 2025-04-04 11:00:00
Continued 2025-04-04 07:51:12 2025-04-04 11:00:00


Action: New
Issued At: 2025-04-03 15:18:55

051 
WWUS76 KSEW 032018
NPWSEW

URGENT - WEATHER MESSAGE
National Weather Service Seattle WA
118 PM PDT Thu Apr 3 2025

WAZ317>319-040515-
/O.NEW.KSEW.FR.Y.0001.250404T0700Z-250404T1600Z/
Olympia and Southern Puget Sound-Lowlands of Lewis and Southern
Thurston Counties-Middle Chehalis River Valley-
Including Grand Mound, Tumwater, Fords Prairie, Elma, McCleary,
Rochester, Montesano, Lacey, Chehalis, and Olympia
118 PM PDT Thu Apr 3 2025

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PDT 
FRIDAY...

* WHAT...Temperatures as low as 33 will result in frost formation.

* WHERE...Middle Chehalis River Valley, Lowlands of Lewis and 
  Southern Thurston Counties, and Olympia and Southern Puget Sound.

* WHEN...From midnight tonight to 9 AM PDT Friday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

* ADDITIONAL DETAILS...The greatest chances of frost formation will 
  be areas away from the water sources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

JD


Action: Continued
Issued At: 2025-04-03 21:47:43

325 
WWUS76 KSEW 040247
NPWSEW

URGENT - WEATHER MESSAGE
National Weather Service Seattle WA
747 PM PDT Thu Apr 3 2025

WAZ317>319-041130-
/O.CON.KSEW.FR.Y.0001.250404T0700Z-250404T1600Z/
Olympia and Southern Puget Sound-Lowlands of Lewis and Southern
Thurston Counties-Middle Chehalis River Valley-
Including McCleary, Olympia, Tumwater, Chehalis, Elma, Lacey,
Rochester, Fords Prairie, Grand Mound, and Montesano
747 PM PDT Thu Apr 3 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PDT FRIDAY...

* WHAT...Temperatures as low as 33 will result in frost formation.

* WHERE...Middle Chehalis River Valley, Lowlands of Lewis and 
  Southern Thurston Counties, and Olympia and Southern Puget Sound.

* WHEN...From midnight tonight to 9 AM PDT Friday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

* ADDITIONAL DETAILS...The greatest chances of frost formation will 
  be areas away from the water sources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

KM


Action: Continued
Issued At: 2025-04-04 07:51:12

806 
WWUS76 KSEW 041251
NPWSEW

URGENT - WEATHER MESSAGE
National Weather Service Seattle WA
551 AM PDT Fri Apr 4 2025

WAZ317>319-041600-
/O.CON.KSEW.FR.Y.0001.000000T0000Z-250404T1600Z/
Olympia and Southern Puget Sound-Lowlands of Lewis and Southern
Thurston Counties-Middle Chehalis River Valley-
Including Elma, McCleary, Grand Mound, Rochester, Chehalis,
Lacey, Olympia, Tumwater, Montesano, and Fords Prairie
551 AM PDT Fri Apr 4 2025

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING...

* WHAT...Temperatures as low as 30 degrees will result in frost 
  formation.

* WHERE...Middle Chehalis River Valley, Lowlands of Lewis and 
  Southern Thurston Counties, and Olympia and Southern Puget Sound.

* WHEN...Until 9 AM PDT this morning.

* 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.

&&

$$

15



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