Wednesday, February 28, 2018

Hazardous Weather Outlook for McHenry Co., IL

FLUS43 KLOT 282137
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
337 PM CST Wed Feb 28 2018


Winnebago-Boone-McHenry-Lake Illinois-Ogle-Lee-De Kalb-Kane-
DuPage-Cook-La Salle-Kendall-Grundy-Will-Kankakee-Livingston-
Iroquois-Ford-Lake Indiana-Porter-Newton-Jasper-Benton-
337 PM CST Wed Feb 28 2018 /437 PM EST Wed Feb 28 2018/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...Tonight.

WEATHER HAZARDS EXPECTED:
Limited Thunderstorm Risk.
Elevated Fog Risk.

DISCUSSION:

A cold front has pushed south into northern Illinois and far
northwest Indiana this afternoon, turning winds off the lake and
spreading fog into areas near the lake shore. Fog will likely
become more widespread after sunset this evening, and may become
locally dense in spots, especially near Lake Michigan. Showers
will develop overnight, and a few thunderstorms are possible.

Portions many area rivers will remain in flood.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...
Limited Thunderstorm Risk.
Elevated Snow Risk.

DISCUSSION:

An area of low pressure will pass south of the area early
Thursday, with winds turning northerly and colder air spreading
into the area. Rain may mix with or change over to wet snow
Thursday morning, mainly over far northern Illinois. If this
occurs, snow may come down fairly hard for a few hour period.
Surface temperatures will be above freezing initially, though if
snowfall is of sufficient intensity, some accumulation could
occur. Confidence is somewhat low in this occurring, though if it
does, an inch or two of wet snow accumulation may be possible in
a few spots Thursday morning.

North winds may gust as high as 40 mph for a time Thursday
morning into early afternoon, though it appears that the duration
of higher winds may be short enough to prevent any significant
lakeshore flooding problems.

Portions of many area rivers will remain in flood, with some
renewed rises possible from the rain tonight into Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

moving to the northeast at 35 MPH...

&&



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