Monday, August 12, 2019

Hazardous Weather Outlook for McHenry Co., IL

<pre>866
FLUS43 KLOT 121651 CCA
HWOLOT

Hazardous Weather Outlook...CORRECTED
National Weather Service Chicago/Romeoville IL
1151 AM CDT Mon Aug 12 2019

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
131700-
Winnebago-Boone-McHenry-Lake-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Porter-Newton-Jasper-Benton-
1151 AM CDT Mon Aug 12 2019 /1251 PM EDT Mon Aug 12 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...

Significant Thunderstorm Risk...with an associated:
Elevated Tornado risk
Elevated damaging wind risk...up to 70 mph.
Limited hail risk...up to quarter-sized.
Elevated Flooding Risk.

DISCUSSION...

A strong weather system is expected to bring widespread rain and
thunderstorms to the region this afternoon through tonight.
Some storms could be strong to severe with all modes of severe
weather possible. However, damaging wind will be the primary
threat, although a few tornadoes will be possible. The main
corridor for severe weather appears to be south and west of a
Mendota to Rensselaer line. Heavy rainfall will also be possible,
which could lead to isolated instances of flooding into this
evening.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday...
Limited Thunderstorm Risk.
High Swim Risk.
Friday...
Limited Thunderstorm Risk.
Saturday and Sunday...
Limited Thunderstorm Risk.
Limited Excessive Heat Risk.

DISCUSSION:

Strong and gusty north winds on Tuesday should result in
dangerous swimming conditions on Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed this afternoon through this evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east-southeast at 40 to 50 mph late afternoon
through this evening.

$$

LMZ740>745-131700-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
1151 AM CDT Mon Aug 12 2019

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

Elevated Thunderstorm Risk...with an associated:
Limited thunderstorm wind gust risk...up to 50 kts.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday...
Limited Thunderstorm Risk.
Friday through Sunday...
Limited Thunderstorm Risk.

$$

Carlaw

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