Tuesday, April 7, 2020

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 071736
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1236 PM CDT Tue Apr 7 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-
1236 PM CDT Tue Apr 7 2020 /136 PM EDT Tue Apr 7 2020/

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...

Limited Thunderstorm Risk...with an associated:
Elevated hail risk...up to golf ball size.
Elevated damaging wind risk...up to 70 mph.

DISCUSSION...

Scattered thunderstorms may develop late this afternoon or early this
evening ahead of an approaching cold front. Currently it appears that
the highest storm coverage will be to the east over northern Indiana
and southern Lower Michigan. Farther west into northern Illinois
storm coverage may remain more isolated due to the potential of a layer
of warm air aloft limiting or preventing thunderstorm development.

Any storms that do develop, will have the capability of being severe,
with large hail and damaging wind gusts. The most likely time period
for any storms and severe weather looks to be between roughly 6 pm
and 10 pm this evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday afternoon and evening...
Limited Severe Thunderstorm Risk.
Thursday...
Elevated Non Thunderstorm Wind Risk.
Elevated Fire Weather Risk.
Elevated Lakeshore Flood Risk northwest Indiana.

DISCUSSION:

A narrow line of thunderstorms could develop along another cold
front that will move across the area late Wednesday afternoon and
early Wednesday evening. There is a limited threat of strong to
possibly locally damaging winds with any storms that form.

Very strong winds are expected Thursday likely gusting over 40
mph at times. These strong winds could result in a somewhat
elevated fire weather danger, particularly anywhere that doesn't
see much rain today or Wednesday. The strong winds will also
likely result some risk of lakeshore flooding along the Porter
County shoreline.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed late this afternoon into this evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward east around 45 mph.
</pre>


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