Sunday, May 17, 2020

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 171019
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
519 AM CDT Sun May 17 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-
519 AM CDT Sun May 17 2020 /619 AM EDT Sun May 17 2020/

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:
Elevated Tornado risk.
Limited damaging wind risk...up to 60 mph.
Elevated Flooding Risk.
Elevated Fog Risk.

DISCUSSION...

Showers and storms today will increase and coverage and intensity.
The ground is saturated, therefore locally heavy rainfall this
afternoon could lead to some instances of flash flooding along with
renewed river rises. A conditional threat for severe
storms exists this afternoon and evening, with a threat for
damaging wind gusts and and even a few tornadoes if sufficient
instability materializes. The highest concern area is along and
south east of I-80 and I-57.

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

Monday and Tuesday...
Elevated Lakeshore Flood Risk.
Friday...
Limited Thunderstorm Risk.

DISCUSSION:

Near record water levels combined with gusty northeast winds
may lead to areas of lakeshore flooding Monday into early Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed this afternoon into the early evening.

GENERAL STORM MOTION OF THE DAY:

Individual storms moving toward the northeast at 40 mph, with
the line of storms motion generally toward the east at 15 mph.
</pre>


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