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Severe Thunderstorm Watch 245
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WW0245 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
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 245
   NWS Storm Prediction Center Norman OK
   415 AM CDT Fri May 19 2017

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southern Illinois
     Eastern Missouri

   * Effective this Friday morning from 415 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

   SUMMARY...A fast-moving cluster of storms will likely continue to
   pose a risk for isolated damaging wind gusts and some hail as it
   moves toward far eastern Missouri (including the St Louis Metro
   area) into western Illinois.

   The severe thunderstorm watch area is approximately along and 55
   statute miles east and west of a line from 30 miles north of Alton
   IL to 10 miles southwest of Farmington MO. 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 244...

   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 500. Mean storm motion vector
   24045.

   ...Guyer
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Page last modified: May 19, 2017
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