dimanche 22 janvier 2012

http://www.spc.noaa.gov/products/watch/ww0005.html(((tornado watch)))

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WW0005 Radar
HazardTornadoesEF2+ Tornadoes
LikelihoodHighModerate
Severe Wind65 kt+ Wind
HighModerate
Severe Hail2"+ Hail
ModerateModerate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
SEL5
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 5
   NWS STORM PREDICTION CENTER NORMAN OK
   520 PM CST SUN JAN 22 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          EASTERN ARKANSAS
          THE MISSOURI BOOTHEEL
          NORTHWEST MISSISSIPPI
          WESTERN TENNESSEE
   
   EFFECTIVE THIS SUNDAY AFTERNOON FROM 520 PM UNTIL MIDNIGHT CST.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 2 INCHES IN DIAMETER...
   THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
   POSSIBLE IN THESE AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
   MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH NORTHWEST OF
   DYERSBURG TENNESSEE TO 25 MILES WEST SOUTHWEST OF GREENVILLE
   MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).
   
   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND 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.
   
   DISCUSSION...THUNDERSTORMS WILL INCREASE IN COVERAGE/INTENSITY THE
   NEXT FEW HOURS ACROSS CENTRAL/ERN AR AS THE LOW LEVELS DESTABILIZE
   AND ASCENT OVERSPREADS THE AREA FROM W TO E...IN ADVANCE OF A STRONG
   SHORTWAVE TROUGH NOW OVER ERN OK.  LOW-LEVEL SHEAR AND MOISTURE WILL
   INCREASES THROUGH THE EVENING ACROSS NE AR/WRN TN...AND STORMS ARE
   EXPECTED TO EVOLVE INTO A BROKEN BAND WITH BOTH EMBEDDED SUPERCELLS
   AND EMBEDDED BOWING SEGMENTS.  VERTICAL SHEAR...MOISTURE...AND THE
   MIXED STORM MODES WILL FAVOR A RISK OF A FEW STRONG
   TORNADOES...ALONG WITH DAMAGING WINDS AND LARGE HAIL THROUGH
   TONIGHT.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 24045.
   
   
   ...THOMPSON

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