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Mesoscale Discussion 219
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   MESOSCALE DISCUSSION 0219
   NWS STORM PREDICTION CENTER NORMAN OK
   0611 PM CDT MON MAR 09 2009
   
   AREAS AFFECTED...PARTS OF WRN/CNTRL OK
   
   CONCERNING...TORNADO WATCH 52...
   
   VALID 092311Z - 100015Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 52 CONTINUES.
   
   SEVERE THREAT APPEARS TO BE INCREASING...AND SHOULD CONTINUE INTO
   THE EVENING HOURS.
   
   MAIN FORCING ASSOCIATED WITH A WEAK SHORT WAVE IMPULSE LIFTING OUT
   OF THE SOUTHERN ROCKIES APPEARS LIKELY TO REMAIN NORTH OF REGION. 
   BUT...INHIBITION HAS WEAKENED SUFFICIENTLY TO ALLOW FOR THE
   INITIATION OF STORMS IN THE CHILDRESS/ALTUS AREA.  THIS IS JUST EAST
   OF THE SURFACE DRY LINE...WHERE MIXED LAYER CAPE IS AROUND 1000
   J/KG.  FOR AT LEAST THE NEXT FEW HOURS...BOUNDARY LAYER BASED STORMS
   APPEAR LIKELY TO INTENSIFY WITHIN A STRONGLY SHEARED 50-60 KT
   SOUTHWESTERLY DEEP LAYER MEAN FLOW FIELD.  THIS WILL TEND TO ADVECT
   STORMS INTO AREAS NEAR OR JUST WEST OF THE OKLAHOMA CITY
   METROPOLITAN AREA DURING THE 00-02Z TIME FRAME.  ALTHOUGH CLOCKWISE
   CURVED LOW-LEVEL HODOGRAPHS DO NOT APPEAR AS LARGE AS FARTHER
   NORTH...ALONG THE WARM FRONT...THEY APPEAR SIZABLE ENOUGH TO SUPPORT
   A RIGHTWARD TURN OF STRONGER CELLS INTO THE OKLAHOMA CITY
   AREA...BEFORE BOUNDARY LAYER COOLING COMMENCES THIS EVENING. 
   ISOLATED TORNADOES WILL BE POSSIBLE WITH THESE STORMS...IN ADDITION
   TO THE RISK FOR LARGE HAIL/LOCALIZED DAMAGING WIND GUSTS.
   
   ..KERR.. 03/09/2009
   
   
   ATTN...WFO...OUN...
   
   LAT...LON   34499974 35329916 36059848 36119787 35879722 35109734
               34339796 33839932 34499974 
   
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