


Red Flag Warning
Issued by NWS Seattle/Tacoma, WA
Issued by NWS Seattle/Tacoma, WA
409 WWUS86 KSEW 021745 RFWSEW URGENT - FIRE WEATHER MESSAGE National Weather Service Seattle WA 1045 AM PDT Tue Sep 2 2025 WAZ658-659-030145- /O.CON.KSEW.FW.A.0004.250903T1900Z-250904T0400Z/ West Slopes of the North Cascades Generally above 1500 Feet- West Slopes of the Central Cascades Generally above 1500 Feet- 1045 AM PDT Tue Sep 2 2025 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR HOT, DRY AND UNSTABLE CONDITIONS FOR FIRE WEATHER ZONES 658 AND 659... * AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet and Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet. * RELATIVE HUMIDITY...As low as 20 percent. * TEMPERATURES...Up to 90 degrees. * STABILITY...Unstable conditions can be expected. * IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that there is a potential for critical fire weather conditions to develop. Monitor the forecasts for possible Red Flag Warnings. && $$