Thursday, July 16, 2020

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 162111
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
411 PM CDT Thu Jul 16 2020


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-
411 PM CDT Thu Jul 16 2020 /511 PM EDT Thu Jul 16 2020/

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

.DAY ONE...Tonight.

Weather hazards expected...

High Swim Risk for Indiana beaches.
Limited Fog Risk overnight.

DISCUSSION...

Dangerous swimming conditions will continue until the early
evening at Indiana Lake Michigan beaches. Patchy fog is possible
after midnight, some of which could be locally dense.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...
Limited Excessive Heat Risk.

Saturday...
Limited Thunderstorm Risk late at night.
Significant Excessive Heat Risk.
Sunday...
Limited Thunderstorm Risk.
Elevated Excessive Heat Risk along and south of US-24.
Monday...
Limited Thunderstorm Risk.
Limited Excessive Heat Risk south of I-80.
Tuesday and Wednesday...
Limited Thunderstorm Risk.

DISCUSSION:

Dangerous heat with peak heat indices near or over 105 degrees is
likely on Saturday. There is an increasing chance for thunderstorms
to affect at least portions of the area late Saturday night into
Sunday. This could include a risk for strong to severe thunderstorms
capable of causing wind damage. The risk for impactful heat on Sunday
is now more favored to be primarily along and south of US-24.

Periodic thunderstorm chances will then resume next work week,
possibly following a break for much of the area on Monday. Heavy
downpours from thunderstorms early Sunday through mid next week
could cause localized flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.
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