dimanche 25 septembre 2011

. Funnel clouds and waterspouts are also possible over Lake Michigan


Statement as of 3:00 PM CDT on September 25, 2011
Special Statement

... Funnel clouds will continue this afternoon...

Funnel clouds have been occurring with the stronger showers and
thunderstorms this afternoon. Cold air aloft and a moist low level
airmass is contributing to an unstable airmass especially in the low
levels of the atmosphere. Rising air currents within the showers and
thunderstorms are strong enough to produce funnel clouds especially
near wind shift lines
. Funnel clouds and waterspouts are also
possible over Lake Michigan.
The development of tornadoes is 
unlikely but cannot be completely ruled out. Any tornadoes would be 
brief and relatively weak. 



Gehring

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