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FNUS22 KWNS 180853 FWDDY2 DAY 2 FIRE WEATHER OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0353 AM CDT FRI MAY 18 2012 VALID 191200Z - 201200Z ...NO CRITICAL AREAS... ...SYNOPSIS... IN THE MID/UPPER-LEVELS...A COMPOSITE TROUGH...INITIALLY OVER THE HIGH PLAINS...WILL PROGRESS EWD OVER THE LOWER PLAINS TOWARD THE MIDDLE/UPPER MS VALLEY REGION. THE COMPOSITE TROUGH WILL DEAMPLIFY AS A SHORTWAVE TROUGH EMBEDDED WITHIN ITS BASE LIFTS NEWD. A ZONE OF MODESTLY ENHANCED MID-LEVEL FLOW WILL ACCOMPANY THE SHORTWAVE TROUGH WHILE LYING GENERALLY TO THE EAST OF ITS AXIS. WEAK RIDGING WILL OCCUR UPSTREAM ACROSS PARTS OF THE NWRN STATES AND GREAT BASIN...AND DOWNSTREAM ACROSS PARTS OF THE GREAT LAKES AND NERN STATES...WHILE A BROAD AREA OF CYCLONIC FLOW COVERS THE SERN STATES. ...PORTIONS OF W TX...ERN/SRN NM... TO THE WEST OF A DRYLINE...AND TO THE SOUTH OF A SWD-ADVANCING COLD FRONT...RH VALUES ARE EXPECTED TO FALL INTO THE UPPER SINGLE DIGITS TO THE MIDDLE TEENS AS THE BOUNDARY LAYER DEEPENS IN CORRESPONDENCE WITH SFC TEMPERATURES WARMING INTO THE MIDDLE 80S TO THE 90S. SWLY TO WLY WINDS OF 10 TO 15 MPH WITH LOCALLY HIGHER GUSTS ARE ANTICIPATED. WHILE LOCALLY ELEVATED FIRE WEATHER CONDITIONS MAY BRIEFLY OCCUR WHERE FUELS ARE DRY...CRITICALLY STRONG WINDS ARE NOT EXPECTED AS THE AFOREMENTIONED SHORTWAVE TROUGH AND ACCOMPANYING ZONE OF MODESTLY ENHANCED MID-LEVEL FLOW MOVE WELL AWAY FROM THE REGION. FURTHERMORE...THE COMBINATION OF ABOVE-NORMAL PRECIPITATION DURING THE PAST COUPLE OF WEEKS IN MANY AREAS...AND FUEL GREEN-UP ACROSS MANY LOCATIONS...WILL MITIGATE THE FIRE WEATHER THREAT. ACCORDINGLY...NO FIRE WEATHER HIGHLIGHTS ARE BEING INCLUDED. ALSO OF NOTE...AS THE FRONT ADVANCES SWD DURING THE LATE AFTERNOON THROUGH THE OVERNIGHT HOURS...SFC WINDS WILL BECOME NNWLY TO NELY AND INCREASE WHILE TEMPERATURES COOL...AND RH VALUES RISE TO ABOVE CRITICAL THRESHOLDS. ..COHEN.. 05/18/2012 ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT... |
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