Red Flag Warning
Issued by NWS Portland, OR
Issued by NWS Portland, OR
745 WWUS86 KPQR 012126 RFWPQR URGENT - FIRE WEATHER MESSAGE National Weather Service Portland OR 226 PM PDT Mon Sep 1 2025 ORZ689-690-021400- /O.CON.KPQR.FW.W.0006.250902T2100Z-250903T0400Z/ Northern Willamette National Forest- Southern Willamette National Forest- 226 PM PDT Mon Sep 1 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 9 PM PDT TUESDAY FOR THUNDERSTORMS FOR FIRE WEATHER ZONES 689 AND 690... * AFFECTED AREA...In Oregon, Fire Weather Zone 689 Northern Willamette National Forest and Fire Weather Zone 690 Southern Willamette National Forest. * THUNDERSTORMS...A 20 to 25% chance of thunderstorms. Storms may produce very little rainfall, especially initially. This will increase the potential for new fire starts with any cloud to ground lightning that occurs. * OUTFLOW WINDS...Instantaneous gusts as high as 40 mph. Gusts at these speeds can be observed tens of miles away from the core of the thunderstorm. * DRY AND UNSTABLE...Unstable conditions with elevated mixing heights may promote pyroconvective activity. * IMPACTS...Conditions may be favorable for rapid fire spread which may threaten life and property. Thunderstorm outflow winds may result in unanticipated erratic fire spread. High instability may result in fire growth. Frequent lightning and critically dry fuels may result in new fire starts. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of the above conditions can contribute to extreme fire behavior. && $$ For more information visit: https://www.weather.gov/portland