Photo by John J. Kleeman
Wednesday's powerful t-storms, which exploded to life in the day's near
record warmth, produced more than large hail. Mammatus clouds, observed
and photographed by J. Kleeman in Chicago's northern suburbs and Ron
Donais in far west suburban DeKalb, graced the underside of towering
cumulonimbus (thunderhead) cloud anvils. This type of cloud formation
often denotes extreme turbulence. Strong surface wind gusts with the
t-storms underscored power of the storms, which radar tracked moving at
speeds up to 64 mph.
THE CHICAGO AREA'S
PEAK WEDNESDAY T-STORM
WIND GUSTS:
Aurora: 47 mph
DuPage County Airport: 62 mph
Kankakee: 44 mph
Midway Airport: 43 mph
O'Hare International: 43 mph
Rockford: 47 mph
Waukegan: 46 mph
Photo by Dan Lauer
This ominous WALL CLOUD, an isolated lower of the cloud base near the
rear southwest quadrant of a t-storm indicating a region of strong
upward vertical motion and an area to be monitored for possible tornado
development, was captured by storm chaser Dan Lauer west of the city
near Northern Illinois University in the DeKalb area.
Photo by Deborah Pitstick
Here is a picture of a double rainbow (second one is pretty faint) as
seen this evening at 5:30 in Geneva, IL.
Many thanks to all for the wonderful photos!!
