Tuesday, August 10, 2021

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 100903
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
403 AM CDT Tue Aug 10 2021


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
403 AM CDT Tue Aug 10 2021 /503 AM EDT Tue Aug 10 2021/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

Elevated Thunderstorm Risk...with an associated:
Limited Tornado risk.
Limited hail risk...up to quarter size.
Elevated damaging wind risk...up to 70 mph.
Limited Flooding Risk.
Elevated Excessive Heat Risk.

DISCUSSION...

Thunderstorms are expected to develop across eastern Iowa and
southern Wisconsin late this afternoon and track across the area
this evening. These storms have the potential to be severe with
primarily damaging winds and possibly locally large hail and a
brief tornado or two. Heavy rain is also expected with these
storms and may result in localized flooding.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday...
Limited Severe Thunderstorm Risk.
Limited Excessive Heat Risk.
Thursday...
Limited Thunderstorm Risk.
Limited Excessive Heat Risk.
Friday...
Limited Thunderstorm Risk.

DISCUSSION:

Warm and very humid conditions will persist Wednesday and
Thursday, with afternoon heat indices possibly surpassing 100F
during the afternoon.

Another round of strong to severe storms are possible Wednesday
evening.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed this evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east at 30 mph.
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