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Severe Thunderstorm Watch 305
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WW0305 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate 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.
   SEL5

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 305
   NWS Storm Prediction Center Norman OK
   135 PM CDT Fri Jun 26 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Northeastern and east central Iowa
     Northern Illinois
     Extreme northwestern Indiana
     Southern Wisconsin
     Lake Michigan

   * Effective this Friday afternoon and evening from 135 PM until
     900 PM CDT.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph likely
     Scattered large hail events to 1.5 inches in diameter possible
     A tornado or two possible

   SUMMARY...Thunderstorms are expected to increase in coverage and
   intensity this afternoon, beginning in northeastern Iowa and
   spreading eastward.  Initial storm development will be more discrete
   cells, with some potential for an isolated supercell or two, though
   some upscale growth into a larger cluster is expected later this
   afternoon.  Damaging winds will be the main threat, though isolated
   large hail will be possible with the more cellular storms early, and
   an isolated tornado or two cannot be ruled out, especially with
   embedded circulations in any north-south oriented line segments.

   The severe thunderstorm watch area is approximately along and 70
   statute miles north and south of a line from 35 miles north of Cedar
   Rapids IA to 45 miles southeast of Racine WI. For a complete
   depiction of the watch see the associated watch outline update
   (WOUS64 KWNS WOU5).

   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.

   &&

   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
   28040.

   ...Thompson
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