Large area uncapped STP OK to Iowa
Posted by JAC on 5/22/2011, 12:45 pm


UBLIC SEVERE WEATHER OUTLOOK  
  NWS STORM PREDICTION CENTER NORMAN OK
  1126 AM CDT SUN MAY 22 2011
 
  ...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE MID AND UPPER
  MISSISSIPPI VALLEY TO THE OZARK PLATEAU THIS AFTERNOON AND
  EVENING...
 
  THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE
  DEVELOPMENT OF TORNADOES...DAMAGING WINDS AND LARGE HAIL OVER PARTS
  OF THE MID AND UPPER MISSISSIPPI VALLEY THIS AFTERNOON AND EVENING.
 
  THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE
 
         NORTHWEST ARKANSAS
         EASTERN IOWA
         NORTHERN AND CENTRAL ILLINOIS
         SOUTHEAST KANSAS
         SOUTHEAST MINNESOTA
         SOUTHWEST TO NORTHEAST MISSOURI
         NORTHEAST OKLAHOMA
         WESTERN AND SOUTHERN WISCONSIN
 
  ELSEWHERE...SEVERE STORMS ARE ALSO POSSIBLE FROM THE SOUTHERN PLAINS
  THROUGH THE TENNESSEE AND OHIO VALLEYS INTO THE UPPER GREAT LAKES.
 
  A POTENT UPPER LEVEL STORM OVER SOUTHWEST MINNESOTA WILL TRACK
  SLOWLY NORTHEAST ACROSS THE UPPER MISSISSIPPI VALLEY THROUGH
  TONIGHT. AHEAD OF THIS FEATURE...AN INCREASINGLY WARM AND HUMID AIR
  MASS WILL SPREAD NORTHEASTWARD FROM THE LOWER MISSOURI VALLEY
  TOWARDS THE UPPER GREAT LAKES. A COLD FRONT ASSOCIATED WITH THE
  UPPER LEVEL DISTURBANCE WILL SHIFT EAST ACROSS THE UPPER MISSISSIPPI
  VALLEY...THE LOWER MISSOURI VALLEY AND THE OZARK PLATEAU. THIS FRONT
  WILL SERVE AS A FOCUS FOR INTENSE THUNDERSTORMS THIS AFTERNOON
  THROUGH TONIGHT. THE GREATEST SEVERE THREAT SHOULD EXIST DURING THE
  MID TO LATE AFTERNOON INTO THIS EVENING OVER PARTS OF THE MID AND
  UPPER MISSISSIPPI VALLEYS SOUTHWESTWARD TO THE OZARK PLATEAU.
 
  STATE AND LOCAL EMERGENCY MANAGERS ARE MONITORING THIS DEVELOPING
  SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE
  WEATHER SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA
  WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER
  TODAY.
 
  ..GRAMS.. 05/22/2011
 
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Gravity waves over MO. Severe weather expected. - JAC, 5/22/2011, 12:14 pm
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