Thursday, July 5, 2018

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 051736 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1236 PM CDT Thu Jul 5 2018

Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 1236 PM CDT Thu Jul 5 2018 /136 PM EDT Thu Jul 5 2018/

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:     Limited damaging wind risk...up to 60 mph.     Limited Flooding Risk.     Limited hail risk...isolated up to nickel to quarter size.  Significant Excessive heat Risk.

DISCUSSION…

Periods of thunderstorms will occur today and into early to mid evening. Storms are likely to have at least 30 to 35 mph gusts, and some stronger storms could have 45 to 60 mph gusts. Also, storms are likely to have brief heavy rain that could lead to flash flooding, particularly south of the Illinois and Kankakee rivers. Finally, while large hail is not expected to be a significant risk, can't rule out isolated marginally severe hail from the strongest thunderstorms, especially along and south of I-80.

.DAYS TWO THROUGH SEVEN…Friday through Wednesday.

Friday…

High Swim Risk

Tuesday and Wednesday…

Limited Excessive Heat Risk.

DISCUSSION:

High waves could lead to dangerous swimming conditions on Lake Michigan beaches Friday morning, and possibly continuing along Indiana beaches into the afternoon.

.SPOTTER INFORMATION STATEMENT…

Spotters activation is unlikely today.

GENERAL STORM MOTION OF THE DAY:

Moving toward east southeast at 20 mph.

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