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Mesoscale Discussion 130
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   MESOSCALE DISCUSSION 0130
   NWS STORM PREDICTION CENTER NORMAN OK
   0801 PM CST THU FEB 20 2014

   AREAS AFFECTED...MIDDLE TN INTO PARTS OF ERN TN AND NRN AL

   CONCERNING...TORNADO WATCH 11...16...

   VALID 210201Z - 210330Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 11...16...CONTINUES.

   SUMMARY...IN ADDITION TO A TORNADO THREAT...CONCERN EXISTS FOR
   WIDESPREAD DAMAGING WINDS TO AFFECT MUCH OF MIDDLE TN THROUGH
   04Z...AND A SIMILAR THREAT SWD FROM NERN MS INTO NRN AL.

   DISCUSSION...AT 0145Z...REGIONAL RADAR IMAGERY SHOWED A QLCS OVER
   MIDDLE TN WITH A PORTION OF THIS ACTIVITY APPROACHING THE NASHVILLE
   METRO AREA AROUND 02Z...WITH THE MIDDLE TN AND NERN MS PORTIONS OF
   THE ACTIVITY REACHING THE ERN EXTENT OF WW 16 IN ERN TN BY 04Z AS
   THESE LINES MOVE ENEWD AT 50 KT.  DESPITE TIME OF DAY...SLY LOW
   LEVEL FLOW HAS MAINTAINED A MOIST-MARGINALLY UNSTABLE ENVIRONMENT...
   WHILE RECENT WSR-88D BNA VAD SHOWED VERY STRONG DEEP LAYER WIND
   FIELDS SUPPORTING A THREAT FOR DAMAGING WINDS AND A TORNADO THREAT. 
   TRENDS IN RADAR IMAGERY AND LIGHTNING DATA SUGGESTED AN INCREASE IN
   STORM ORGANIZATION AND MESOSCALE ENHANCEMENT PER COLD POOL
   EVOLUTIONS.

   ..PETERS.. 02/21/2014


   ATTN...WFO...MRX...JKL...FFC...LMK...OHX...BMX...HUN...MEG...

   LAT...LON   33998870 35318796 36738654 36588437 35928462 35048550
               34388601 33858797 33998870 

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Page last modified: February 21, 2014
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