A strong cold front will sweep across the Inland Northwest Saturday. Very warm dry conditions and gusty winds will contribute to rapid fire spread for any new or ongoing fires.
PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG IN EFFECT 2 PM UNTIL 8 PM SATURDAY FOR THE FOLLOWING AREAS: OKANOGAN VALLEY (ZONE 703) - COLVILLE RESERVATION (ZONE 702) - WATERVILLE PLATEAU (ZONE 706) - WESTERN COLUMBIA BASIN (ZONE 707) - EASTERN COLUMBIA
BASIN - PALOUSE - SPOKANE AREA (ZONE 708) AND LOWER PALOUSE - SNAKE RIVER (ZONE 709). WIND GUSTS OF 40 TO 50 MPH COMBINED WITH HUMIDITY LEVELS OF 15 TO 20 PERCENT WILL CREATE EXTREME FIRE WEATHER CONDITIONS
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Affected Area: Colville Reservation (Zone 702), Okanogan Valley (Zone 703), Waterville Plateau (Zone 706), Western Columbia Basin (Zone 707), Eastern Columbia Basin - Palouse - Spokane Area (Zone 708) and Lower Palouse - Snake River (Zone 709).
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Winds: Southwest 20 to 30 mph with gusts up to 50 mph.
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Relative Humidities: 15 to 20 percent.
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Impacts: Ongoing fires or new fire ignitions will be favorable for very rapid fire spread and extreme fire behavior, which would threaten life and property.
A strong cold front will sweep across the Inland Northwest Saturday. Very warm dry conditions and gusty winds will contribute to rapid fire spread for any new or ongoing fires. ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG IN EFFECT 2 PM UNTIL 8 PM SATURDAY FOR THE FOLLOWING AREAS: OKANOGAN VALLEY (ZONE 703) - COLVILLE RESERVATION (ZONE 702) - WATERVILLE PLATEAU (ZONE 706) - WESTERN COLUMBIA BASIN (ZONE 707) - EASTERN COLUMBIA BASIN - PALOUSE - SPOKANE AREA (ZONE 708) AND LOWER PALOUSE - SNAKE RIVER (ZONE 709). WIND GUSTS OF 40 TO 50 MPH COMBINED WITH HUMIDITY LEVELS OF 15 TO 20 PERCENT WILL CREATE EXTREME FIRE WEATHER CONDITIONS... * Affected Area: Colville Reservation (Zone 702), Okanogan Valley (Zone 703), Waterville Plateau (Zone 706), Western Columbia Basin (Zone 707), Eastern Columbia Basin - Palouse - Spokane Area (Zone 708) and Lower Palouse - Snake River (Zone 709). * Winds: Southwest 20 to 30 mph with gusts up to 50 mph. * Relative Humidities: 15 to 20 percent. * Impacts: Ongoing fires or new fire ignitions will be favorable for very rapid fire spread and extreme fire behavior, which would threaten life and property.
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. PDS Red Flag conditions are extremely rare due to a combination of high winds and very dry fuels. New fires will grow rapidly and out of control. Residents should be prepared to evacuate if a wildfire breaks out. Have multiple ways to receive instructions from emergency managers, and evacuate if ordered to or if a fire threatens.
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. PDS Red Flag conditions are extremely rare due to a combination of high winds and very dry fuels. New fires will grow rapidly and out of control. Residents should be prepared to evacuate if a wildfire breaks out. Have multiple ways to receive instructions from emergency managers, and evacuate if ordered to or if a fire threatens.
An Air Quality Alert has been issued by the following agencies: Washington Department of Ecology Colville Confederated Tribes Environmental Protection Agency Spokane Regional Clean Air Agency An Air Quality Alert has been issued for Asotin, Chelan, Douglas, Ferry, Okanogan, Pend Oreille, and Stevens Counties until further notice due to current and expected wildfire smoke from regional fires. Extremely critical fire weather Saturday will produce significant smoke from ongoing and emerging fires. Particulate matter (PM2.5) may reach unhealthy levels through the weekend, especially in areas downwind from active wildfires in Washington, Oregon, and British Columbia. An Air Quality Alert has also been issued for Grant, Lincoln, and Spokane counties until further notice due to expected smoke impacts from ongoing and emerging fires. Shifting winds will likely bring smoke into these counties beginning Saturday evening. PM2.5 may reach unhealthy levels. When air quality is unhealthy, everyone should reduce exposure. Limit time outside, avoid strenuous outdoor activity, and follow tips for cleaner indoor air.
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