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FNUS21 KWNS 150628 FWDDY1 DAY 1 FIRE WEATHER OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0127 AM CDT THU MAY 15 2008 VALID 151200Z - 161200Z ...CRITICAL FIRE WEATHER AREA FOR SRN NV...SWRN UT...SRN CA...WRN AZ... ...SYNOPSIS... IN THE EAST...A NRN STREAM UPPER TROUGH WILL MERGE WITH A REDEVELOPING LOW IN THE SWRN STATES...BECOMING A LONG WAVE TROUGH AXIS EXTENDING FROM NERN ONTARIO ROUGHLY THROUGH BAJA CALIFORNIA. IN THE SOUTHEAST...HIGH PRESSURE WILL GRADUALLY BREAK DOWN...ALLOWING AN INCREASE IN SHOWERS AND THUNDERSTORMS...THAT WILL SLOWLY MOVE EWD. MEANWHILE IN THE WEST...UPPER HIGH PRESSURE WILL CONTINUE TO AMPLIFY...LEADING TO ABOVE NORMAL TEMPERATURES NEAR THE WEST COAST. STRONG WINDS AROUND THE PERIPHERY OF THE HIGH AND THE REDEVELOPING LOW PRESSURE IN THE SWRN STATES WILL LEAD TO STRONG WINDS AND CRITICAL FIRE WEATHER CONDITIONS ACROSS SRN NV...SWRN UT...SRN CA...AND WRN AZ...ESPECIALLY NEAR THE LOWER CO RIVER VALLEY. ...CRITICAL FIRE WEATHER AREA - SRN NV...SWRN UT...SRN CA...WRN AZ... PRIMARY CONDITIONS: STRONG WINDS...LOW RH...DROUGHT A STRONG NLY TO NELY JET AXIS WILL DEVELOP BETWEEN AMPLIFYING UPPER HIGH PRESSURE THAT WILL BUILD ALONG THE WEST COAST...AND A REDEVELOPING AREA OF LOW PRESSURE LOCATED ROUGHLY INVOF NM. THIS WILL ALLOW SURFACE WIND SPEEDS NEAR 25 TO 35 MPH...WITH HIGHER SPEEDS THROUGH THE LOWER COLORADO RIVER VALLEY WHERE CHANNELING WILL ALLOW AN INCREASE IN SPEEDS. DEEP MIXING WILL ALLOW JET WINDS TO MIX TO THE SURFACE...WITH STRONG GUSTS LIKELY IN THE AFTERNOON. AS TEMPERATURES WARM INTO THE LOWER TO UPPER 90S ACROSS THE LOWER VALLEYS...RELATIVE HUMIDITIES WILL DROP INTO THE SINGLE DIGITS AND LOWER TEENS. ..HURLBUT.. 05/15/2008 ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT... |
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