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Severe Thunderstorm Watch 150
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WW0150 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate Moderate

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 150
   NWS STORM PREDICTION CENTER NORMAN OK
   100 PM CDT MON MAY 12 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     CENTRAL AND EASTERN IOWA
     NORTHWEST AND WEST-CENTRAL ILLINOIS
     NORTHEAST MISSOURI

   * EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 100 PM UNTIL
     800 PM CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
       INCHES IN DIAMETER POSSIBLE
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
   STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTHEAST OF
   KIRKSVILLE MISSOURI TO 25 MILES NORTHWEST OF DUBUQUE IOWA.  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 149...

   DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
   INTENSITY ACROSS THE WATCH AREA THIS AFTERNOON AS THE REGION IS
   INFLUENCED BY A MIDLEVEL JET STREAK MOVING INTO THE MID MO VALLEY.
   THE COMBINATION OF MODERATE INSTABILITY AND 40-45 KT OF DEEP-LAYER
   SHEAR WILL SUPPORT SUPERCELLS AND BOWING STRUCTURES CAPABLE OF LARGE
   HAIL AND DAMAGING WINDS. A TORNADO OR TWO IS ALSO POSSIBLE GIVEN THE
   MOIST/LOW LCL BOUNDARY LAYER AND MODESTLY STRONG LOW-LEVEL SHEAR.

   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 500. MEAN STORM
   MOTION VECTOR 24030.


   ...MEAD
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Page last modified: May 13, 2014
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