Any warming Sunday will be limited by increasing and thickening clouds ahead of an
approaching low pressure system. Snow should spread over northeast Illinois from the
west later in the afternoon and continue overnight. Another inch or so accumulation is
expected on top of Chicago’s snow cover .
SIGNIFICANT SNOW POSSIBLE
Wet accumulating snow could begin later in the day Tuesday afternoon and continue
overnight. Over the Texas Panhandle Monday night, an intensifying jet stream flowing
from the Pacific Northwest is expected to merge with a strong Southern Pacific-origin,
upper-level, low pressure disturbance moving inland off the southern California coast.
A resulting strong storm is forecast to spread rain into the Ohio Valley and a mix of
rain and snow farther north that could change to all snow over Chicago later Tuesday.
