Friday, July 13, 2018

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 131819 CCA HWOLOT

Hazardous Weather Outlook…CORRECTED National Weather Service Chicago/Romeoville IL 119 PM CDT Fri Jul 13 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- 119 PM CDT Fri Jul 13 2018 /219 PM EDT Fri Jul 13 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 Excessive heat Risk.

DISCUSSION…

Thunderstorms are likely to spread into portions of far northern Illinois this evening, including the Rockford metropolitan area. Depending on how organized the thunderstorms become and how quickly they move into the area, isolated marginally severe wind gusts will be possible. Outside of any severe wind risk, all thunderstorms can be expected to produce occasional to frequent cloud to ground lightning and very heavy downpours, with a localized flooding risk.

In addition, heat indices will be around 100 degrees this afternoon from the far western suburbs of Chicago south to Pontiac and then west to the Mississippi River.

.DAYS TWO THROUGH SEVEN…Saturday through Thursday.

Saturday…

Limited Flooding Risk.  Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Sunday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Monday…

Elevated Thunderstorm Risk.  Limited Excessive Heat Risk.  Limited Coastal Flood Risk

Tuesday…

Limited Coastal Flood Risk  High Swim Risk

Wednesday and Thursday…

Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed this evening in northwest and north  central Illinois.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east at around 30 mph.

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