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Severe Thunderstorm Watch 10
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WW0010 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Low 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.
   SEL0

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 10
   NWS STORM PREDICTION CENTER NORMAN OK
   140 PM CST THU FEB 20 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     WEST CENTRAL ILLINOIS
     EAST CENTRAL MISSOURI

   * EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 140 PM UNTIL
     700 PM CST.

   * PRIMARY THREATS INCLUDE...
     SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A FEW TORNADOES POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
   STATUTE MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH
   NORTHWEST OF ALTON ILLINOIS TO 35 MILES SOUTH SOUTHWEST OF SCOTT
   AFB ILLINOIS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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 9...

   DISCUSSION...A BROKEN BAND OF STORMS CONTINUES TO DEVELOP ALONG THE
   RESIDUAL DRYLINE/COLD FRONT SURGING EWD ACROSS MO.  A NARROW
   CORRIDOR OF SOMEWHAT ENHANCED SURFACE HEATING HAS DEVELOPED AS THE
   WARM SECTOR SPREADS A LITTLE NWD.  WIND PROFILES ARE FAVORABLE FOR
   SUPERCELLS...THOUGH THE SHEAR HAS BEEN A BIT STRONG FOR THE
   INSTABILITY THUS FAR.  EXPECT A FEW DAMAGING GUSTS AND MARGINALLY
   SEVERE HAIL WITH THE STRONGEST STORMS...THOUGH A TORNADO CANNOT BE
   RULED OUT GIVEN THE FAST-MOVING SUPERCELLS BRIEFLY INTERACTING WITH
   THE WARM FRONT.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
   A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION
   VECTOR 23055.


   ...THOMPSON
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Page last modified: February 21, 2014
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