Wednesday, July 17, 2019

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 171742
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1242 PM CDT Wed Jul 17 2019


Winnebago-Boone-McHenry-Lake-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Porter-Newton-Jasper-Benton-
1242 PM CDT Wed Jul 17 2019 /142 PM EDT Wed Jul 17 2019/

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

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

Elevated Thunderstorm Risk...with an associated:
Elevated damaging wind risk...up to 60 mph.
Limited Flooding Risk.
Limited Excessive heat Risk.

DISCUSSION...

Strong to severe thunderstorms are possible tonight. Although
widely scattered storms are possible across much of northern
Illinois and northwest Indiana this afternoon, the highest
potential for strong storms is over north central Illinois
tonight. The main threats are damaging winds and heavy rainfall
with localized flooding.

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

Thursday...
Limited Severe Thunderstorm Risk.
Limited Flooding Risk.
Significant Excessive Heat Risk.
Friday and Saturday...
Limited Thunderstorm Risk.
Significant Excessive Heat Risk.
Sunday...
Limited Thunderstorm Risk.
Elevated Excessive Heat Risk.
Monday...
Limited Thunderstorm Risk.

DISCUSSION:

Heat will build to dangerous levels for the entire area Thursday
through Saturday. Heat indices look to climb in excess of 105
degrees for much of the area. Very warm overnight temperatures
will offer little relief from the heat and humidity, especially
in the urban heat island of Chicago.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east southeast at 25 to 45 mph.
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