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Severe Thunderstorm Watch 147
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WW0147 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.
   SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 147
   NWS STORM PREDICTION CENTER NORMAN OK
   1000 PM CDT SUN MAY 11 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     EXTREME SOUTHWEST IOWA
     SOUTH CENTRAL TO NORTHEAST KANSAS
     EXTREME NORTHWEST MISSOURI
     EXTREME SOUTHEAST NEBRASKA
     NORTHWEST AND NORTH CENTRAL OKLAHOMA

   * EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1000 PM
     UNTIL 400 AM CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
       TO 2.5 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 50
   STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF
   FALLS CITY NEBRASKA TO 45 MILES WEST SOUTHWEST OF ENID OKLAHOMA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU7).

   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...THIS SEVERE THUNDERSTORM WATCH REPLACES
   TORNADO WATCH NUMBER 142...TORNADO WATCH NUMBER 143. WATCH NUMBER
   142 143 WILL NOT BE IN EFFECT AFTER 1000 PM CDT. CONTINUE...WW
   144...WW 145...WW 146...

   DISCUSSION...CONVECTIVE OUTFLOWS AND A SURGING COLD FRONT ARE
   BEGINNING TO TRANSITION THE STORM MODE FROM DISCRETE SUPERCELLS TO
   MORE LINEAR STORMS...WHICH WILL SUPPORT PRIMARY RISKS OF LARGE HAIL
   AND DAMAGING WINDS OVERNIGHT.  IN THE SHORT TERM...A TORNADO CANNOT
   BE RULED OUT WITH LINGERING SEMI-DISCRETE SUPERCELLS IN CENTRAL KS
   AND SW IA.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 26030.


   ...THOMPSON
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Page last modified: May 12, 2014
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