Blue Flower

Particularly Dangerous Situation (PDS)

Storm Prediction Center
SPC Particularly Dangerous Situation (PDS) Tornado/Severe Thunderstorm Watch
  1. WW 399 SEVERE TSTM MN WI LM 290015Z - 290700Z
    WW 0399 Image
    
    URGENT - IMMEDIATE BROADCAST REQUESTED
    Severe Thunderstorm Watch Number 399...CORRECTED
    NWS Storm Prediction Center Norman OK
    725 PM CDT Wed Jul 28 2021
    
    CORRECTED TO ADD PDS TEXT
    
    The NWS Storm Prediction Center has issued a
    
    * Severe Thunderstorm Watch for portions of 
      parts of east-central Minnesota
      much of Wisconsin
      Lake Michigan
    
    * Effective this Wednesday night and Thursday morning from 725 PM
      until 200 AM CDT.
    
    ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
    
    * Primary threats include...
      Widespread damaging winds expected with scattered significant
        gusts to 90 mph likely
      Scattered large hail likely with isolated very large hail events
        to 2 inches in diameter possible
      A tornado or two possible
    
    SUMMARY...Strong/severe thunderstorms are forecast to increase in
    coverage over the next 1 to 2 hours, evolving into a large,
    well-organized cluster/possible derecho while moving rapidly
    southeastward.  Along with potential for a few tornadoes, widespread
    damaging winds are expected -- including a few significant gusts
    possibly reaching 90 MPH locally.
    
    The severe thunderstorm watch area is approximately along and 70
    statute miles either side of a line from 65 miles southwest of
    Duluth MN to 40 miles northeast of Milwaukee WI. For a complete
    depiction of the watch see the associated watch outline update
    (WOUS64 KWNS WOU9).
    
    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 398...
    
    AVIATION...A few severe thunderstorms with hail surface and aloft to
    2 inches. Extreme turbulence and surface wind gusts to 80 knots. A
    few cumulonimbi with maximum tops to 550. Mean storm motion vector
    30050.
    
    ...Goss
    
    
    
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