SOUTHWEST WASHINGTON AND NORTHWEST OREGON FROM THE COAST RANGE TO THE CASCADES. * TIMING...CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE THROUGH THE WEEKEND. * STABILITY...MID-LEVEL HAINES 6 CONDITIONS TODAY AND SUNDAY. * RELATIVE HUMIDITY...AS LOW AS 10 TO 15 PERCENT...WITH LOCAL SINGLE DIGIT RH VALUES IN THE AFTERNOONS. LITTLE TO NO HUMIDITY RECOVERY TONIGHT ON EXPOSED RIDGES AND SLOPES ABOVE THERMAL BELTS. * WINDS...GENERALLY NORTHEAST 5 TO 10 MPH WITH GUSTS TO 25 MPH. WINDS WILL BECOME INCREASINGLY TERRAIN DRIVEN...FIRST IN THE SOUTHERN TIER OF ZONES...THEN SPREADING NORTHWARD THIS WEEKEND. * IMPACTS...THE COMBINATION OF LOW HUMIDITY...AN INCREASINGLY UNSTABLE ENVIRONMENT...AND CRITICALLY DRY FUELS MAY RESULT IN RAPID FIRE SPREAD SHOULD ANY STARTS OCCUR. WINDS WILL BE AN ADDED FACTOR NEAR THE COLUMBIA RIVER GORGE.PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.
Posted on: Sun, 14 Sep 2014 00:40:58 +0000
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