Fall often marks an increase in severe weather. The months of October and November, particularly from about mid-October through mid-November, usually brings an increase in severe thunderstorms activity including tornadoes, large hail and damaging thunderstorm winds across southeast Missouri, southern Illinois, southwest Indiana and western Kentucky. Recent years proved several examples of this annual increase in severe thunderstorms From October 14 to October 26, 2004, a total of 11 tornadoes occurred across southern Illinois, southeast Missouri and western Kentucky. On October 18, 2007, 16 tornadoes ravaged our region causing 20 injuries and 20 million dollars damage. A total of 26 tornadoes occurred across our region in November of 2005 including the November 6th Evansville, Indiana tornado which caused 25 fatalities. We also had the November 15, 2005 Madisonville, Kentucky area violent EF4 tornado.
The cause of the increase in tornadoes and other sever thunderstorm activity is usually a result of the jet stream dipping south. This causes an increase in the wind field aloft These wind fields are often enhanced by storm systems approaching from the Plain states. This coupled with sometimes favorable instability and moisture levels can produce the necessary conditions for severe thunderstorms, including tornadoes.
Preparation and response are the keys to ensure you and those close to you stay safe this fall. First, ensure you have a plan that includes a safe sheltering location when severe weather threatens. Secondly, ensure you have a means to receive weather warnings, particularly of overnight storms which are more than twice as likely to be killers. A weather radio is a perfect solution for being alerted of dangerous weather Thirdly, go to your predetermined safe location promptly when a warning is issued for your area or severe weather is observed.
For additional information on severe weather, see:
HTTP://WWW.STORMREADY.NOAA.GOV/LINKS.HTM and HTTP://WWW.NWS.NOAA.GOV/OS/SEVEREWEATHER/INDEX.SHTML
SOURCE: National Weather Service - Paducah Public Information Statement 7:28 a.m. Thursday, October 11, 2012