Tuesday will be Great Lakes to East Coast. Heads up CX, Anung, Fred, Conclue, & DM
Posted by JAC on 6/19/2011, 8:41 am



ZCZC SPCSWOD48 ALL
  ACUS48 KWNS 180837
  SPC AC 180837
 
  DAY 4-8 CONVECTIVE OUTLOOK  
  NWS STORM PREDICTION CENTER NORMAN OK
  0337 AM CDT SAT JUN 18 2011
 
  VALID 211200Z - 261200Z
 
  ...MIDWEST...
 
  SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS PARTS OF THE MIDWEST EARLY
  NEXT WEEK...MOST LIKELY DURING THE DAY4 PERIOD AS A SIGNIFICANT
  UPPER TROUGH WITH A CLOSED LOW MIGRATES INTO THE MID MO VALLEY.
  SEASONABLY STRONG SWLY FLOW AT MID LEVELS WILL EXTEND ACROSS THE
  CNTRL PLAINS INTO THE LOWER GREAT LAKES WHICH WILL OVERSPREAD A
  FAIRLY MOIST/UNSTABLE WARM SECTOR ACROSS MO/IA INTO IL.  OF
  PARTICULAR INTEREST AND LIKELY FOCUS FOR SEVERE TSTMS WILL BE A
  NOTABLE WARM FRONT THAT RETREATS TO A POSITION NEAR THE MN/IA
  BORDER...SEWD INTO THE NRN OH VALLEY.  BOTH THE GFS AND ECMWF AGREE
  THAT STRONG VERTICAL SHEAR WILL COINCIDE WITH SUBSTANTIAL
  INSTABILITY ACROSS THIS REGION SUCH THAT SUPERCELLS AND POSSIBLE MCS
  ACTIVITY COULD EVOLVE.  BEYOND THE DAY4 PERIOD MOVEMENT OF THE UPPER
  TROUGH IS MORE QUESTIONABLE WITH DIFFERING SOLUTIONS IN MEDIUM RANGE
  GUIDANCE.
 
  ..DARROW.. 06/18/2011
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Strong Tornado Risk for Nebraska Sunday - JAC, 6/18/2011, 3:42 pm
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