Alert archive / Wisconsin / Special Marine Warnings in 2021

Special Marine Warning 18, NWS Green Bay, WI

June 30, 2021

NWS Green Bay, WI issued this special marine warning at Jun 30, 2021, 3:56 PM CDT. It was in force for 64 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 30, 2021, 3:56 PM CDT (20:56 UTC)
Expired
Jun 30, 2021, 5:00 PM CDT
In force
64 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon
Hail
0.75 in
Wind
34.0 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 Green Bay, WI wrote its last area forecast discussion before this special marine warning went out at Jun 30, 2:19 PM CDT, 1 hour 37 minutes earlier.

Area forecast discussion, Jun 30, 2:19 PM CDT, 1 hour 37 minutes before
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Hazardous weather outlook, Jun 30, 2:23 PM CDT, 1 hour 33 minutes before
Hazardous Weather Outlook
National Weather Service Green Bay WI
223 PM CDT Wed Jun 30 2021

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-011930-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
223 PM CDT Wed Jun 30 2021

This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.

.DAY ONE...Tonight

Scattered thunderstorms are expected during the evening,
especially across northeast Wisconsin. Some of the thunderstorms
could be strong to severe, with the strongest storms capable of
producing hail to one inch and 60 mph winds.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

The chance of thunderstorms will return at times during the early
to middle portion of next week.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to report any wind damage or hail to the
National Weather Service in Green Bay.

LMZ521-522-541>543-011930-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
223 PM CDT Wed Jun 30 2021

This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.

.DAY ONE...Tonight

Scattered thunderstorms are possible during the evening. Some
storms could be strong to severe, and could produce hail up to one
inch and gusty winds to 50 knots.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

Thunderstorms are possible early next week. Any storms that form
may pose a hazard to mariners.

Kurimski/MPC

In the hours before

Local storm report, Jun 30, 9:59 AM CDT, 5 hours 57 minutes before
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Special weather statement, Jun 30, 2:00 PM CDT, 1 hour 56 minutes before
Special Weather Statement
National Weather Service Green Bay WI
200 PM CDT Wed Jun 30 2021

WIZ012-013-301945-
Florence WI-Northern Marinette County WI-
200 PM CDT Wed Jun 30 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN FLORENCE AND
NORTHERN MARINETTE COUNTIES UNTIL 245 PM CDT...

At 159 PM CDT, Doppler radar was tracking a strong thunderstorm near
Norway, or near Iron Mountain, moving southeast at 20 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Kingsford, Pembine, Homestead, Niagara, Dunbar, Aurora, Beecher,
Fence, West Bass Lake Campground and Miscauno Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4588 8808 4586 8808 4582 8814 4578 8809
      4578 8805 4579 8799 4577 8799 4575 8787
      4568 8778 4566 8783 4560 8777 4556 8779
      4556 8783 4554 8780 4547 8781 4545 8784
      4570 8843 4572 8843 4572 8848 4575 8855
TIME...MOT...LOC 1859Z 296DEG 19KT 4574 8799

Hykin
Special weather statement, Jun 30, 3:35 PM CDT, 21 minutes before
Special Weather Statement
National Weather Service Green Bay WI
335 PM CDT Wed Jun 30 2021

WIZ021-073-074-302130-
Southern Oconto County WI-Southern Marinette County WI-
Northern Oconto County WI-
335 PM CDT Wed Jun 30 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN MARINETTE AND SOUTHERN
OCONTO COUNTIES UNTIL 430 PM CDT...

At 335 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles west of Marinette to 6 miles southeast
of Pound to near Gillett. Movement was southeast at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Marinette, Oconto, Pulaski, Gillett, Pound, Little Suamico, Peshtigo,
Chase, Oconto Falls and Porterfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4476 8774 4486 8766 4488 8762 4494 8767
      4493 8772 4490 8777 4486 8777 4469 8793
      4467 8823 4476 8825 4485 8825 4485 8833
      4503 8842 4508 8810 4522 8786 4503 8754
      4494 8759 4493 8766 4490 8763 4491 8752
TIME...MOT...LOC 2035Z 310DEG 25KT 4507 8777 4500 8797 4496 8825

Hykin
Special weather statement, Jun 30, 3:43 PM CDT, 13 minutes before
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Local storm report, Jun 30, 3:55 PM CDT, 1 minute before
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The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 10:28 PM CDTMarine Dense Fog AdvisoryGRB12 hr
Jun 30, 2:00 PM CDTSpecial Weather StatementGRBFlorence45 min
Jun 30, 3:08 PM CDTSpecial Marine WarningGRB52 min
Jun 30, 3:35 PM CDTSpecial Weather StatementGRBOconto55 min
Jun 30, 3:43 PM CDTSpecial Weather StatementGRBDoor62 min
Jun 30, 4:35 PM CDTSpecial Marine WarningGRB55 min
Jun 30, 5:02 PM CDTSpecial Weather StatementGRBBrown28 min
Jun 30, 6:10 PM CDTSpecial Weather StatementGRBBrown, Calumet, Kewaunee, Manitowoc35 min
Jun 30, 6:50 PM CDTSpecial Weather StatementGRBManitowoc25 min

Nearby

Special Marine Warnings in Wisconsin, 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.