Alert archive / Michigan / Special Marine Warnings in 2021

Special Marine Warning 14, NWS Grand Rapids, MI

June 21, 2021

NWS Grand Rapids, MI issued this special marine warning at Jun 21, 2021, 12:45 AM EDT. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 21, 2021, 12:45 AM EDT (04:45 UTC)
Expired
Jun 21, 2021, 1:16 AM EDT
In force
31 min
Issued by
NWS Grand Rapids, MI
Area
Storm-based polygon
Hail
0.0 in
Wind
49.0 mph

What forecasters said that day

The local office's own words before this special marine warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Rapids, MI wrote its last area forecast discussion before this special marine warning went out at Jun 20, 11:50 PM EDT, 55 minutes earlier.

Area forecast discussion, Jun 20, 11:50 PM EDT, 55 minutes before
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Hazardous weather outlook, Jun 20, 4:22 PM EDT, 8 hours 23 minutes before
Hazardous Weather Outlook
National Weather Service Grand Rapids MI
422 PM EDT Sun Jun 20 2021

MIZ037>040-043>046-050>052-056>059-064>067-071>074-212030-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
422 PM EDT Sun Jun 20 2021

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

.DAY ONE...Tonight

The Enhanced Risk of severe thunderstorms continues tonight. The
primary threat is for damaing winds, large hail is also possible
and there remains a very slight threat for tornadoes. Localized
flooding is possible too. The area of greatest concern is mostly
over the southern half of the area. There are two periods of
strong to severe storms, the fist is early tonight, prior to 11
pm, then a second period of strong to severe thunderstorms from
around midnight till about 4 am.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Strong winds will result in hazardous condtions at area beaches on
Monday.

Scattered frost is possible Monday night north of route 20.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible tonight.

LMZ844>849-212030-
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-
422 PM EDT Sun Jun 20 2021

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

.DAY ONE...Tonight

Thunderstorms will result in wind gusts over 40 knots and large
waves. Cloud to water lighting will also be an issue. The threat
for these harards is greatest south of Grand Haven.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Winds and waves will be hazardous to beach goes and small craft
Monday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible tonight.

In the hours before

Local storm report, Jun 20, 7:47 PM EDT, 4 hours 58 minutes before
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Local storm report, Jun 20, 8:07 PM EDT, 4 hours 38 minutes before
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Local storm report, Jun 20, 8:21 PM EDT, 4 hours 24 minutes before
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Local storm report, Jun 20, 8:22 PM EDT, 4 hours 23 minutes before
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The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 8:42 PM EDTSevere Thunderstorm WarningGRRCalhoun, Eaton, Ingham, Jackson63 min
Jun 20, 10:39 PM EDTAreal Flood AdvisoryGRRAllegan, Calhoun, Jackson, Kalamazoo, Van Buren6 hr
Jun 21, 12:38 AM EDTSevere Thunderstorm WarningGRRVan Buren67 min
Jun 21, 1:12 AM EDTTornado WarningGRRVan Buren36 min
Jun 21, 1:30 AM EDTSevere Thunderstorm WarningGRRKalamazoo60 min
Jun 21, 1:33 AM EDTSevere Thunderstorm WarningGRRCalhoun57 min

Nearby

Special Marine Warnings in Michigan, 2021Every special marine warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.