hazardous weather briefing

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