Thursday, July 27, 2023

Hazardous Weather Outlook for McHenry Co., IL

FLUS43 KLOT 270925
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
425 AM CDT Thu Jul 27 2023


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-
425 AM CDT Thu Jul 27 2023 /525 AM EDT Thu Jul 27 2023/

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

.DAY ONE...Today and Tonight.

Weather hazards expected...

Limited Thunderstorm Risk...with an associated:
Limited Hail Risk...up to 1 inch in diameter.
Limited Damaging Wind Risk...up to 60 mph.
Limited Flooding Risk.
Significant Excessive Heat Risk.

DISCUSSION...

Heat indices of 100 to 110 degrees are expected this afternoon
away from Lake Michigan.

Also, there is a chance of thunderstorms tonight, mainly after
midnight. If storms occur, then some could produce very heavy
rain, locally damaging winds, and hail up to the size of quarters.

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

Friday...
Limited Severe Thunderstorm Risk.
Limited Flooding Risk.
Significant Excessive Heat Risk.
Saturday...
Limited Thunderstorm Risk.
High Swim Risk Lake Michigan Shore
Wednesday...
Limited Thunderstorm Risk.

DISCUSSION...

Peak afternoon heat indices of 100 to 110 degrees are expected
Friday afternoon.

Thunderstorms are likely late Friday afternoon through Friday
evening. Some of these storms may be severe and could also
produce torrential downpours with an accompanying threat for
localized flash flooding.

Hazardous swim conditions are forecast at Lake Michigan beaches
on Saturday.

.SPOTTER INFORMATION STATEMENT...

Due to the isolated nature of any severe weather late tonight,
spotter activation is not anticipated.

GENERAL STORM MOTION OF THE DAY:

Moving toward the southeast at 20 to 30 mph.


https://wxn.io/ww1hu