RSS feed source: US National Weather Service
The National Weather Service in Portland has issued a Red Flag Warning for thunderstorms and unstable conditions, which is in effect from 9 AM to 9 PM PDT Wednesday. * AFFECTED AREA…In Oregon, Fire Weather Zone 689 Northern Willamette National Forest and Fire Weather Zone 690 Southern Willamette National Forest. * THUNDERSTORMS…Isolated to scattered thunderstorms. * DRY AND UNSTABLE…Unstable conditions with elevated mixing heights may promote pyroconvective activity. * 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. * IMPACTS…Conditions may be favorable for rapid fire spread which may threaten life and property. Thunderstorm outflow
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