Much drier and cooler air follows the thunderstorm-producing cold
front that passed through
Chicago overnight. Severe thunderstorm warnings were issued for counties west of the metro
area with a 70 m.p.h gust reported in Franklin Grove, Lee County and 60+ m.p.h. gusts
reported at Ottawa, Mendota, and Earlville in LaSalle County. A strong low pressure center is
forecast to develop and intensify over the eastern Great Lakes early this week with the
resulting northwest flow pulling much colder air into the western Great lakes and Midwest.
Clouds associated with the low will spread out far to the west, covering most of northern
Illinois as well as a good portion of Wisconsin, Michigan and Indiana. Showers, perhaps even
a few thunderstorms are possible both Monday and Tuesday under this unseasonable setup
which should see high temperatures some 10 to 15 degrees below normal.
Warmer, closer-to-normal readings later in the week
As the low pressure system slowly moves northeast, clouds will break and temperatures are
expected to slowly modify later in the workweek.
Chicago overnight. Severe thunderstorm warnings were issued for counties west of the metro
area with a 70 m.p.h gust reported in Franklin Grove, Lee County and 60+ m.p.h. gusts
reported at Ottawa, Mendota, and Earlville in LaSalle County. A strong low pressure center is
forecast to develop and intensify over the eastern Great Lakes early this week with the
resulting northwest flow pulling much colder air into the western Great lakes and Midwest.
Clouds associated with the low will spread out far to the west, covering most of northern
Illinois as well as a good portion of Wisconsin, Michigan and Indiana. Showers, perhaps even
a few thunderstorms are possible both Monday and Tuesday under this unseasonable setup
which should see high temperatures some 10 to 15 degrees below normal.
Warmer, closer-to-normal readings later in the week
As the low pressure system slowly moves northeast, clouds will break and temperatures are
expected to slowly modify later in the workweek.
