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Severe Thunderstorm Watch 171
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WW0171 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 171
   NWS STORM PREDICTION CENTER NORMAN OK
   1240 PM CDT SUN APR 19 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          EASTERN ARKANSAS
          SOUTHEAST MISSOURI
   
   EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL
   700 PM CDT.
   
   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
   STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES SOUTHWEST OF
   MONTICELLO ARKANSAS TO 35 MILES WEST NORTHWEST OF CAPE GIRARDEAU
   MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
   
   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
   AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
   THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
   AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.
   
   DISCUSSION...SCATTERED THUNDERSTORMS WILL CONTINUE TO INCREASE THIS
   AFTERNOON AHEAD OF A MID LEVEL VORT MAX OVER NORTHERN AR.  STRONG
   DEEP LAYER EFFECTIVE SHEAR AND STEEP LAPSE RATES ACROSS THE REGION
   WILL POSE A THREAT OF HAIL AND DAMAGING WINDS IN STRONGER CELLS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM
   MOTION VECTOR 24035.
   
   
   ...HART
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