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Severe Thunderstorm Watch 425
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WW0425 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
High Moderate
Severe Hail 2"+ Hail
Low 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 425
   NWS Storm Prediction Center Norman OK
   855 AM CDT Mon Aug 10 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Central Iowa

   * Effective this Monday morning and afternoon from 855 AM until
     200 PM CDT.

   * Primary threats include...
     Scattered damaging winds likely with isolated significant gusts
       to 80 mph possible
     Isolated large hail events to 1.5 inches in diameter possible

   SUMMARY...A fast-moving cluster over western Iowa with a history of
   severe wind gusts should expand and intensify as it sweeps across
   central Iowa through early afternoon. Damaging winds are the primary
   threat.

   The severe thunderstorm watch area is approximately along and 60
   statute miles north and south of a line from 40 miles south of Storm
   Lake IA to 45 miles north of Ottumwa IA. 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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 424...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   1.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   29050.

   ...Grams
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Page last modified: August 10, 2020
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