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Severe Thunderstorm Watch 128
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WW0128 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.
   SEL8

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 128
   NWS STORM PREDICTION CENTER NORMAN OK
   815 PM CDT WED MAY 7 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     EXTREME SOUTHWEST IOWA
     SOUTHEAST NEBRASKA

   * EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 815 PM
     UNTIL 100 AM CDT.

   * PRIMARY THREATS INCLUDE...
     ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE
     ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST OF
   BEATRICE NEBRASKA TO 40 MILES NORTH NORTHEAST OF SHENANDOAH IOWA.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU8).

   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 122...WW 123...WW
   124...WW 125...WW 126...WW 127...

   DISCUSSION...RAPID THUNDERSTORM DEVELOPMENT HAS OCCURRED ALONG THE
   NW EDGE OF THE RETURNING MOISTURE...AND STORMS WILL LIKELY PERSIST
   FOR A FEW HOURS IN RESPONSE TO SEVERAL BOUNDARY MERGERS IN THE NEXT
   HOUR OR SO.  GIVEN STEEP LAPSE RATES/MODERATE INSTABILITY AND
   EFFECTIVE BULK SHEAR OF 35-45 KT...THERE WILL BE A RISK FOR
   SUPERCELLS/CLUSTERS WITH LARGE HAIL AND DAMAGING WINDS.

   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 24025.


   ...THOMPSON
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Page last modified: May 08, 2014
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