After reaching a high of 48 degrees in Rockford on Saturday,
11 degrees warmer than the normal high for February 22, one more day of unseasonably
warm temperatures will be followed by a system of snow and rain showers with
accumulating snowfall likely.
Persistent southerly winds have
allowed the Stateline to continually warm through the end of the work week and
into the weekend. Sunday will be no exception with temperatures expected to
reach the lower 50’s over most of the area. All the while, a storm system has
been quickly intensifying over Southern California and will continue to
propagate northeastward through the Plains and into the Midwest. From Sunday
evening through Monday morning, winds are expected to from southwesterly to
northeasterly as they chase the approaching storm system. This will advect cold
air into the region and begin a gradual cooldown.
The system will be approaching from the south with scattered
showers reaching Whiteside, Lee, and southern DeKalb counties as early as Monday
afternoon. As the precipitation fills in, rain will likely transition into a rain/snow
mix by the mid-evening and into all snowfall for the overnight hours. Rain and snow
will continue to fall through Tuesday afternoon before precipitation will
transition into entirely snowfall for the reminder of the storm’s impact on the
Stateline. The chance for snow flurries will gradually decrease through the day
on Wednesday with the snow expected to come to an end sometime late Wednesday
evening. By Thursday, high temperatures will fall into the mid-20’s.
Snowfall amounts are very uncertain at this time though
accumulating snowfall is likely over the entire Stateline area.
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