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Severe Thunderstorm Watch 320
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WW0320 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Very Low
Severe Hail 2"+ Hail
Low Very Low

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 320
   NWS STORM PREDICTION CENTER NORMAN OK
   345 AM CDT WED JUN 18 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     NORTH CENTRAL AND NORTHEAST IOWA
     SOUTHEAST MINNESOTA
     SOUTHWEST WISCONSIN

   * EFFECTIVE THIS WEDNESDAY MORNING FROM 345 AM UNTIL 1000 AM CDT.

   * PRIMARY THREATS INCLUDE...
     ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
   STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF LA
   CROSSE WISCONSIN TO 45 MILES WEST SOUTHWEST OF WATERLOO 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 318...WW 319...

   DISCUSSION...LOOSELY-ORGANIZED N CNTRL IA MCS...WITH EMBEDDED
   SUSTAINED STORMS...EXPECTED TO MOVE GENERALLY EWD THROUGH LATER THIS
   MORNING. DEVELOPMENT WILL BE FOSTERED BY MOIST...40+ KT WSWLY LLJ.
   ALTHOUGH MID/UPR LVL WINDS DO NOT APPEAR FAVORABLE FOR A
   LONG-LIVED/INTENSE MCS DRIVEN BY COLD POOL DYNAMICS...COMBINATION OF
   EXISTING BUOYANCY...RICH MOISTURE /PW AROUND 1.75 INCHES/...AND
   MODERATE WLY FLOW ALOFT SUGGEST POTENTIAL FOR AT LEAST SPORADIC DMGG
   GUSTS.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 26025.


   ...CORFIDI
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Page last modified: June 18, 2014
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