Thunderstorms sweep the area producing pre-dawn downpours; here are some preliminary Chicago area Wednesday morning rainfalls

Here are some unofficial Chicago area rainfall tallies from this morning's pre-dawn rains from our Weather Bug observation network:

O'Hare                       0.68"
Lake Geneva, WI        0.66
Valparaiso, IN            0.65"
Chicago (Robert S.
     Abbott School)     0.60"
Darien                      0.58"
Rockford                  0.55"
Highland, IN             0.54"
Wilmette                  0.54"
Wadsworth              0.52"
Trevor, WI                0.47"
Kenosha                 0.47"
Carpentersville         0.47"
Long Grove             0.46"
Park Ridge              0.45"
Itasca                     0.45"
Munster, IN            0.42"
Glenview                0.42"
Niles                      0.41"
Lombard                0.40"
Des Plaines           0.40"
River Grove             0.39
Lake Villa               0.39"
Alsip                     0.39"
Chesterton, IN       0.39"
Morton Grove         0.39"
Gary, IN                0.38"
Henry, IL               0.38"
Marseilles             0.37"
LaGrange              0.37"
Waukegan            0.37"
Janesville, WI        0.35"
Burr Ridge            0.35"
Oak Lawn             0.35"
Westchester         0.35"
Lombard               0.35"
Elgin                    0.33"
Mundelein            0.33"
Lansing                0.33"
Lombard               0.33"
Elmhurst               0.33"
Naperville              0.33"

May-level temperatures arrive as a pool of cool mid-summer Canadian air settles into the area late this week into the weekend. We'll have more on that predicted cooling on our WGN News programs at 5:30 and 9pm.  See you then!

Tom Skilling