Wednesday, April 26, 2017

Hazardous Weather Outlook for McHenry Co., IL

FLUS43 KLOT 260906
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
406 AM CDT Wed Apr 26 2017


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-
406 AM CDT Wed Apr 26 2017 /506 AM EDT Wed Apr 26 2017/

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

.DAY ONE...Today and Tonight.

WEATHER HAZARDS EXPECTED:
Significant Thunderstorm Risk...with an associated:
Limited Thunderstorm Wind Damage Risk...up to 60 MPH.
Elevated Flooding Risk.

DISCUSSION:

Deep low pressure across the plains will bring periods of showers
and storms today and tonight. The first wave will come this morning
mainly west of Chicago. Storms will be limited and not severe.

Showers and storms will increase in coverage from the southwest
this afternoon ahead of a cold front. Damaging winds may be possible
with some of these storms, mainly mid to late afternoon through early
evening. The greater severe threat will remain south of our area,
but with areas south and east of Interstate 55 would be favored if
stronger storms to develop farther north. Additional heavy rain
will occur this evening and overnight, which will bring the concern
for street and possible river flooding, as some areas may receive 1
to 2 inches of rainfall.

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

Friday and Saturday...
Limited Thunderstorm Risk.
Sunday...
Limited Flooding Risk.
Limited Thunderstorm Risk.


DISCUSSION:

Deep low pressure across the plains will bring several waves of rain and
storms this weekend. Thunder would be most prevalent later Saturday
into Sunday. Heavy rain is the highest concern.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed late this afternoon and early evening.

GENERAL STORM MOTION OF THE DAY:

Moving northeast at 45 to 50 mph.

&&



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