Hazardous Weather Outlook
Issued by NWS Grand Rapids, MI

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FLUS43 KGRR 210829
HWOGRR

HAZARDOUS WEATHER OUTLOOK
National Weather Service Grand Rapids MI
429 AM EDT Mon Aug 21 2017

MIZ037>040-043>046-050>052-056>059-064>067-071>074-220830-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
429 AM EDT Mon Aug 21 2017

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Today and Tonight

There is a small chance of a thunderstorm this afternoon mainly
along and east of U.S.-131. These storms are not expected to
become severe.

Thunderstorms are expected to develop overnight tonight. Some of
the storms could become locally strong to severe. Wind gusts,
large hail, locally heavy rainfall, and cloud to ground lightning
strikes will be the main threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Thunderstorms will gradually diminish through the day on Tuesday.
Some of the storms could be locally strong early.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be possible overnight tonight.

$$

LMZ844>849-220830-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
429 AM EDT Mon Aug 21 2017

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Today and Tonight

Thunderstorms are expected to develop overnight tonight. Some of
the storms could become locally strong to severe. Wind gusts,
large hail, locally heavy rainfall, and cloud to water lightning
strikes will be the main threats.

Winds and waves will increase overnight tonight. Conditions will
deteriorate, with conditions becoming hazardous to boaters and
swimmers late tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

A few thunderstorms will remain possible on Tuesday morning.

Very hazardous conditions can be expected on Tuesday for boaters
and swimmers as waves are expected to build to at least 5 to 7
feet. These conditions could linger into Wednesday before
improving.

$$

NJJ



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