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Hazardous Weather Briefing. Submitted: Noon , Sept 29, 2009. Severe Weather Potential September 30 and October 1, 2009. - PowerPoint PPT Presentation
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Hazardous Weather Briefing
Severe Weather PotentialSeptember 30 and October 1, 2009
Submitted: Noon, Sept 29, 2009The following is a hazardous weather briefing provided by the National Weather Service in
Topeka, KS. This briefing will be updated as needed and/or as staffing permits. This web briefing should not be used beyond 1 AM, September 30, or if local
weather conditions become unrepresentative.
• Wednesday Evening/Overnight:– Large Hail the primary threat– Isolated Damaging Winds
• Thursday– Large Hail the primary threat– Damaging Winds– Tornadoes (mainly afternoon)
IMPACTS
TIMING
• Wednesday Night – Elevated thunderstorms may produce large hail.
• Thursday – Likely early morning hail threat– 2nd round of severe afternoon storms with hail,
wind, and tornadoes possible– Uncertainty in exact timing and evolution
Storm Prediction Center Outlook
Wednesday Severe Weather Outlook % Chance of Severe Weather
www.spc.noaa.gov
Storm Prediction Center Outlook
Thursday Severe Weather Outlook % Chance of Severe Weather
www.spc.noaa.gov
• Large hail possible Wednesday night• 2nd round of severe weather possible on
Thursday– Large hail, damaging winds, and tornadoes
possible– Likely beginning as isolated supercells– Transitioning to fast moving squall line
• Fall severe weather is not uncommonALWAYS BE PREPARED!
OVERVIEW