Monday's sub-par 61-degree high in Chicago came on the heels of the
area's chilliest morning in 18 days. O'Hare International Airport
registered a 39-degree low while some nearby areas registered frost
level temperatures-among them Waukegan (33 degrees), Kenosha (33) and
Northbrook (34). With the chilly air eastbound, frost and freeze
warnings were hoisted overnight across sections of nine states from
Michigan and northern Indiana east to New England.
Tuesday brings with it the prospect of warmer southerly winds expected
to boost Chicago-area temperatures to close to 70 degrees.
Storm-outbreak possible
The warmth is to be joined by an influx of humid Gulf air Tuesday night
and Wednesday-a development that threatens more ominous weather here,
including what may become the area's most extensive outbreak to date. At
least one computer model is developing a major squall line from Michigan
to Texas by early Wednesday evening and thunderstorms which may impact
the Chicago area.
