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Severe Thunderstorm Watch 547
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WW0547 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.
   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 547
   NWS STORM PREDICTION CENTER NORMAN OK
   210 PM CDT SAT JUL 4 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST ARKANSAS
          SOUTHERN ILLINOIS
          WESTERN KENTUCKY
          SOUTHEAST MISSOURI
          NORTHWEST TENNESSEE
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 210 PM UNTIL
   800 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 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST OF
   POPLAR BLUFF MISSOURI TO 30 MILES NORTHEAST OF PADUCAH KENTUCKY. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 545...WW 546...
   
   DISCUSSION...WARM SECTOR CONTINUES TO GRADUALLY DESTABILIZE AHEAD OF
   SURFACE LOW ACROSS NRN MO AND CONVECTIVELY ENHANCED OUTFLOW MOVING
   EAST ACROSS NRN AR. MLCAPE VALUES AOA 1000 J/KG ARE EXPECTED TO AID
   TSTM UPDRAFT INTENSIFICATION AS LARGE SCALE LIFT/ASCENT IS
   MAINTAINED AHEAD OF SFC LOW AND WARM FRONT THROUGH THE AFTERNOON.
   DEEP-LAYER EFFECTIVE SHEAR ON THE ORDER OF 30-40KT WILL LIKELY
   CONTRIBUTE TO PERSISTENT ROTATING UPDRAFTS CAPABLE OF PRODUCING HAIL
   AND LOCALLY STRONGER WIND GUSTS. TORNADO POTENTIAL MAY EXIST WITH
   ROTATING STORMS ON OR CROSSING THE WARM FRONT INVOF MS/OH RIVER
   CONFLUENCE NEXT FEW HOURS. THIS POTENTIAL APPEARS TOO LIMITED IN
   SCOPE TO SUPPORT TORNADO WATCH BUT STORMS DEVELOPING OR MOVING INTO
   THIS AREA SHOULD BE MONITORED CLOSELY FOR STRONGER LOW LEVEL
   ROTATION.
   
   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 450. MEAN STORM
   MOTION VECTOR 26030.
   
   
   ...CARBIN
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