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Mesoscale Discussion 73
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   MESOSCALE DISCUSSION 0073
   NWS STORM PREDICTION CENTER NORMAN OK
   0215 PM CST TUE JAN 29 2013
   
   AREAS AFFECTED...NERN TX...SERN OK...WRN AR
   
   CONCERNING...TORNADO WATCH 7...
   
   VALID 292015Z - 292215Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 7 CONTINUES.
   
   SUMMARY...THE THREAT FOR TORNADOES AND DAMAGING WINDS CONTINUES
   ACROSS THE REGION.
   
   DISCUSSION...SURFACE ANALYSIS SHOWS A WEAK SURFACE LOW OVER E-CNTRL
   OK...IN A REGION OF STRONG LOW LEVEL THETA-E ADVECTION JUST AHEAD OF
   THE COLD FRONT. NUMEROUS SHOWERS AND STORMS PERSIST OVER ERN OK AND
   WRN AR BUT FEW HAVE BEEN ABLE TO ORGANIZE INTO SEVERE
   STORMS...MAINLY DUE TO MARGINAL INSTABILITY. HOWEVER...WIND SHEAR
   REMAINS INTENSE...AND SLY FLOW WILL MAINTAIN AN INFLUX OF MOIST AND
   SLIGHTLY WARMER AIR INTO THE AREA AS POCKETS OF HEATING ARE
   OCCURRING UPSTREAM ALONG THE I-35 CORRIDOR. SURFACE PRESSURE FALLS
   ARE CURRENTLY MAXIMIZED ACROSS ERN OK AND AR...AND RADAR DOES SHOW A
   FEW STRONGER STORMS OVER ERN OK WHICH MAY DEVELOP INTO A DAMAGING
   WIND OR TORNADO THREAT WITH TIME.
   
   LATER THIS AFTERNOON...THE COLD FRONT WILL ALSO BRING MORE
   STORMS...WITH MAINLY A DAMAGING WIND THREAT BUT EMBEDDED
   CIRCULATIONS MAY EXIST ALONG THE LINE.
   
   ..JEWELL/THOMPSON.. 01/29/2013
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
   
   ATTN...WFO...LZK...SHV...TSA...FWD...OUN...
   
   LAT...LON   32439403 32459684 34439659 35379572 35359361 32439403 
   
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