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Severe Thunderstorm Watch 161
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WW0161 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
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.
   SEL1

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 161
   NWS STORM PREDICTION CENTER NORMAN OK
   355 PM CDT TUE MAY 20 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     CENTRAL AND EASTERN IOWA
     NORTHERN ILLINOIS
     NORTHWEST INDIANA
     SOUTHERN WISCONSIN
     LAKE MICHIGAN

   * EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 355 PM UNTIL
     1100 PM CDT.

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

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHEAST
   OF RACINE WISCONSIN TO 65 MILES WEST OF DES MOINES IOWA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU1).

   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 160...

   DISCUSSION...THUNDERSTORMS ARE EXPECTED TO DEVELOP AND INTENSIFY
   ALONG A WEAK BOUNDARY EXTENDING FROM CENTRAL IA INTO SOUTHERN WI. 
   THESE STORMS WILL SPREAD EAST-SOUTHEASTWARD ACROSS THE WATCH AREA
   THIS AFTERNOON AND EVENING.  MODERATE INSTABILITY COUPLED WITH STEEP
   LAPSE RATES AND STRONG WINDS ALOFT WILL PROMOTE ORGANIZED MULTICELL
   OR ISOLATED SUPERCELL STORMS CAPABLE OF LARGE HAIL.  DAMAGING WINDS
   MAY BECOME AN INCREASING THREAT LATER THIS EVENING.

   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 26030.


   ...HART
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Page last modified: May 21, 2014
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