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Home Return to list Dense Fog Advisory 0004 Issued by the Seattle Forecast Office
Action: New Issued At: 2026-05-17 09:22:46 479 WWUS76 KSEW 171422 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 722 AM PDT Sun May 17 2026 WAZ317>319-332-171900- /O.NEW.KSEW.FG.Y.0004.260517T1422Z-260517T1900Z/ Olympia and Southern Puget Sound-Lowlands of Lewis and Southern Thurston Counties-Middle Chehalis River Valley-Lower Chehalis River Valley- Including Hoquiam, Fords Prairie, Elma, Aberdeen, Grand Mound, Chehalis, Lacey, Tumwater, Olympia, Rochester, Montesano, and McCleary 722 AM PDT Sun May 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL NOON PDT TODAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Lower Chehalis River Valley, Middle Chehalis River Valley, Lowlands of Lewis and Southern Thurston Counties, and Olympia and Southern Puget Sound. * WHEN...Until noon PDT today. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...The fog will primarily impact areas along the I-5 corridor, US-101, and US-12 within the advisory area. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ HPR Action: Cancelled Issued At: 2026-05-17 11:31:21 508 WWUS76 KSEW 171631 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 931 AM PDT Sun May 17 2026 WAZ317>319-332-171745- /O.CAN.KSEW.FG.Y.0004.000000T0000Z-260517T1900Z/ Olympia and Southern Puget Sound-Lowlands of Lewis and Southern Thurston Counties-Middle Chehalis River Valley-Lower Chehalis River Valley- Including Hoquiam, Fords Prairie, Elma, Aberdeen, Grand Mound, Chehalis, Lacey, Tumwater, Olympia, Rochester, Montesano, and McCleary 931 AM PDT Sun May 17 2026 ...DENSE FOG ADVISORY IS CANCELLED... The fog has dissipated. Therefore the advisory is cancelled. $$ HPR | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||