Some isolated tornadoes over FL
Posted by JAC on 8/15/2009, 5:10 pm



MESOSCALE DISCUSSION 1894
  NWS STORM PREDICTION CENTER NORMAN OK
  0225 PM CDT SAT AUG 15 2009
 
  AREAS AFFECTED...PARTS OF THE CNTRL/SRN FL PEN
 
  CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
 
  VALID 151925Z - 152100Z
 
  THE NEED FOR A WW IS NOT CURRENTLY ANTICIPATED...BUT TRENDS WILL
  CONTINUE TO BE MONITORED FOR THE POSSIBILITY OF AN INCREASING SEVERE
  THREAT LATE THIS AFTERNOON.
 
  LATEST VWP DATA AND RUC GUIDANCE INDICATE A STRENGTHENING OF
  SOUTHEASTERLY LOW-LEVEL FLOW FIELDS IS NOW UNDERWAY ACROSS THE
  SOUTHERN HALF OF THE PENINSULA...EAST/SOUTHEAST OF THE NORTHWESTWARD
  MOVING TROPICAL WAVE NOW NORTH OF THE KEYS.  IT APPEARS SPEEDS COULD
  APPROACH 35-40 KT IN THE 1-2 KM AGL LAYER... CONTRIBUTING TO FAIRLY
  STRONG LOW-LEVEL SHEAR IN THE PRESENCE OF A BOUNDARY LAYER
  CHARACTERIZE BY MID 70S SURFACE DEW POINTS AND WEAK TO MODERATE
  POTENTIAL INSTABILITY.  AS BANDS OF CONVECTION WITH EMBEDDED
  THUNDERSTORMS CONTINUE TO DEVELOP WITHIN THIS ENVIRONMENT THROUGH
  THE REMAINDER OF THE AFTERNOON...POTENTIAL FOR AT LEAST ISOLATED
  BRIEF TORNADOES AND LOCALIZED STRONG WIND GUSTS APPROACHING SEVERE
  LIMITS APPEARS TO EXIST.
 
  ..KERR.. 08/15/2009
 
 
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Meanwhile back at the GOM - JAC, 8/15/2009, 10:49 am
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