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FNUS21 KWNS 110816 FWDDY1 DAY 1 FIRE WEATHER OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0215 AM CST THU MAR 11 2010 VALID 111200Z - 121200Z ...CRITICAL FIRE WEATHER AREA FOR PARTS OF THE MIDDLE RIO GRANDE VALLEY... ...SYNOPSIS... EARLY MORNING SATELLITE IMAGERY SHOWS A SHORTWAVE TROUGH OVER AZ AND THIS FEATURE IS FORECAST TO BE OVER THE LOWER MS RIVER VALLEY BY DAYBREAK FRIDAY. AS THIS OCCURS...A VIGOROUS UPPER LOW OVER THE LOWER MO RIVER VALLEY WILL MEANDER OVER THE MIDWEST. BRIEF UPPER RIDGING WILL OCCUR OVER THE INTERMOUNTAIN W AHEAD OF ANOTHER POWERFUL UPPER DISTURBANCE APPROACHING THE W COAST. A STRONG SUBTROPICAL JET ACROSS NRN MEXICO EXTENDING INTO THE GULF OF MEXICO WILL WORK IN CONCERT WITH APPROACHING SWRN U.S. TROUGH AND LEAD TO A BELT OF HIGH MOMENTUM FLOW OVER THE RIO GRANDE VALLEY. ...CRITICAL FIRE WEATHER AREA - PARTS OF THE MIDDLE RIO GRANDE VALLEY... PRIMARY CONDITIONS: STRONG WINDS / LOW RH A DRY LOW LEVEL AIRMASS SAMPLED BY THE 00Z/11 DRT RAOB WILL LIKELY LEAD TO MIN RH INTO THE TEENS TO 20 PERCENT OVER THE HIGHLIGHTED AREA AS SURFACE TEMPS WARM AND LOW LEVEL LAPSE RATES STEEPEN. MODEL FORECAST SOUNDINGS IMPLY AMPLE BOUNDARY LAYER MIXING AND SHOW STRONG WLY FLOW IN THE LOWEST 1-2 KM...WHICH WILL LIKELY SUPPORT STRONG WINDS OF 20-30 MPH WITH HIGHER GUSTS. ..SMITH.. 03/11/2010 ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT... |
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