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Severe Thunderstorm Watch 70
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WW0070 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
High 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 70
   NWS STORM PREDICTION CENTER NORMAN OK
   320 PM CDT SAT APR 12 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     CENTRAL AND NORTHEAST IOWA
     EXTREME NORTHWEST ILLINOIS
     SOUTHWEST WISCONSIN

   * EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 320 PM UNTIL
     1000 PM CDT.

   * PRIMARY THREATS INCLUDE...
     WIDESPREAD LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL
       EVENTS TO 3 INCHES IN DIAMETER POSSIBLE
     SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
       TO 75 MPH POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTH
   SOUTHWEST OF DENISON IOWA TO 10 MILES SOUTH SOUTHEAST OF MADISON
   WISCONSIN.  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.

   &&

   DISCUSSION...THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON
   AND EVENING ALONG A SURFACE BOUNDARY EXTENDING FROM
   CENTRAL/NORTHEAST IOWA INTO SOUTHERN WISCONSIN.  STORMS THAT FORM
   WILL LIKELY BECOME INTENSE WITH A RISK OF VERY LARGE HAIL AND
   DAMAGING WINDS.  ACTIVITY SHOULD SPREAD SOUTHEASTWARD ACROSS THE
   WATCH AREA THROUGH THE EVENING.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 25030.


   ...HART
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Page last modified: April 13, 2014
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