Sunday, August 20, 2017

Hazardous Weather Outlook for McHenry Co., IL

FLUS43 KLOT 202035
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
335 PM CDT Sun Aug 20 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-
335 PM CDT Sun Aug 20 2017 /435 PM EDT Sun Aug 20 2017/

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

.DAY ONE...Tonight.

WEATHER HAZARDS EXPECTED:
Limited Thunderstorm Risk...with an associated:
Limited Hail Risk...up to quarter size.
Limited Thunderstorm Wind Damage Risk...up to 60 MPH.

DISCUSSION:

Isolated thunderstorms are possible from late this afternoon
into tonight. The strongest of these may be capable of producing
isolated one inch hail or wind gusts to 60 mph. Not all areas
will see rain.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
Limited Flooding Risk.
Elevated Severe Thunderstorm Risk.
Tuesday...
Limited Thunderstorm Risk.

DISCUSSION:

Weakening thunderstorms may move into the area from the west
Monday morning. A greater potential for strong to severe storms
will develop Monday night, as a cold front approaches the area.
Thunderstorms are expected to move into the area Monday evening
and could be severe, with damaging winds the primary threat.
The severe threat would likely diminish overnight, though the
potential for locally heavy rainfall will persist. Additional
thunderstorms may linger Tuesday, especially south and east of
Chicago.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

moving east at 15 to 20 MPH...

&&



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