8/17/2023 10:49:00 PM until 8/18/2023 9:00:00 PM

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

GUSTY WINDS AND LOW HUMIDITY THROUGH FRIDAY... .Breezy winds have materialized across the Columbia Basin and Cascade Gaps this afternoon. Gusts up to 30 mph are possible, with stronger winds expected Friday afternoon and evening, when gusts could eclipse 35 mph at times. This, combined with the recent heat wave and RHs in the teens, will make for critical fire weather conditions. ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES OR639, OR641, WA690, AND WA691... * AFFECTED AREA...Fire Weather Zones 639 East Slopes of the Northern Oregon Cascades, 641 Lower Columbia Basin of Oregon, 690 Kittitas Valley and 691 Lower Columbia Basin. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Winds and critically low humidity values can contribute to rapid fire spread and extreme fire behavior.