MARSHALL-TAMA-JASPER-POWESHIEK-MARION-MAHASKA-LUCAS-MONROE-
WAPELLO-
INCLUDING THE CITIES OF…MARSHALLTOWN…TOLEDO…NEWTON…
GRINNELL…KNOXVILLE…OSKALOOSA…CHARITON…ALBIA…OTTUMWA
559 PM CDT THU AUG 14 2008

…CONDITIONS ARE FAVORABLE FOR FUNNEL CLOUDS THROUGH MID EVENING…

CURRENT ATMOSPHERIC CONDITIONS SUPPORT THE DEVELOPMENT OF FUNNEL
CLOUDS. USUALLY…THESE FUNNEL CLOUDS CAN FORM FROM SHOWERS AND
WEAK THUNDERSTORMS. THESE FUNNELS ARE NORMALLY BRIEF…DROP ONLY
A FEW HUNDRED FEET FROM THE CLOUD BASE…AND RARELY BECOME A
TORNADO OR CAUSE DAMAGE. HOWEVER…IF ONE IS SPOTTED…PLEASE
REPORT IT IMMEDIATELY TO LOCAL LAW ENFORCEMENT FOR RELAY TO THE
NATIONAL WEATHER SERVICE. IF A TORNADO WARNING WOULD BECOME
NECESSARY…TAKE APPROAPRIATE ACTION.