Alert archive / Wisconsin / Special Weather Statements in 2018

Special Weather Statement, NWS Green Bay, WI

June 18, 20189 counties in Wisconsin

NWS Green Bay, WI issued this special weather statement at Jun 18, 2018, 12:51 AM CDT for 9 counties in Wisconsin. It was in force for 84 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 18, 2018, 12:51 AM CDT (05:51 UTC)
Expired: Jun 18, 2018, 2:15 AM CDT
In force: 84 min
Issued by: NWS Green Bay, WI

Counties Brown County, WI, Calumet County, WI, Manitowoc County, WI, Outagamie County, WI, Portage County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 5.9 hours before the alert went out and 61 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1303 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1550 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 weather statement went out at Jun 17, 11:22 PM CDT, 1 hour 29 minutes earlier.

Area forecast discussion, Jun 17, 11:22 PM CDT, 1 hour 29 minutes before

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Hazardous weather outlook, Jun 17, 3:12 PM CDT, 9 hours 39 minutes before

Hazardous Weather Outlook
National Weather Service Green Bay WI
312 PM CDT Sun Jun 17 2018

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-182015-
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-
312 PM CDT Sun Jun 17 2018

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

.DAY ONE...Tonight

Thunderstorms are expected across the area later this afternoon
and tonight. A few storms could become severe, especially north
of Highway 10. Damaging winds are the main severe weather threat.

A flash flood watch is in effect for much of central and northern
Wisconsin, where recent heavy rains have left the ground nearly
saturated and rivers and stream levels high.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

Scattered thunderstorms are forecast for Monday morning. A few
strong storms with gusty winds and heavy rain are possible early.

There is a chance of thunderstorms on Friday into next weekend.
It is too early to determine if any of these storms would become
severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

LMZ521-522-541>543-182015-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
312 PM CDT Sun Jun 17 2018

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

.DAY ONE...Tonight

Scattered thunderstorms will pose a hazard to boaters on the lake
and bay at times tonight. Dense fog is also possible at times.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

There is a chance of thunderstorms into Monday, and again late in
the week.

RDM/Eckberg

In the hours before

Local storm report, Jun 17, 10:45 PM CDT, 2 hours 6 minutes before

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Special weather statement, Jun 17, 10:56 PM CDT, 1 hour 55 minutes before

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Local storm report, Jun 17, 11:26 PM CDT, 1 hour 25 minutes before

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Special weather statement, Jun 17, 11:48 PM CDT, 1 hour 3 minutes before

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Special weather statement, Jun 18, 12:19 AM CDT, 32 minutes before

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Special weather statement, Jun 18, 12:51 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:06 PM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Portage, Wood	39 min
Jun 17, 7:17 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	88 min
Jun 17, 7:20 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	40 min
Jun 17, 8:11 PM CDT	Special Marine Warning	GRB		2 hr
Jun 17, 8:16 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Oconto, Shawano	59 min
Jun 17, 8:17 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	31 min
Jun 17, 8:51 PM CDT	Special Weather Statement	GRB	Door	54 min
Jun 17, 9:12 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Menominee, Oconto, Shawano	51 min
Jun 17, 9:19 PM CDT	Special Marine Warning	GRB		116 min
Jun 17, 9:24 PM CDT	Tornado Warning	GRB	Oconto, Shawano	24 min
Jun 17, 10:01 PM CDT	Special Weather Statement	GRB	Brown, Kewaunee	59 min
Jun 17, 10:25 PM CDT	Special Weather Statement	GRB	Waupaca	65 min
Jun 17, 10:56 PM CDT	Special Weather Statement	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago, Wood	49 min
Jun 17, 11:48 PM CDT	Special Weather Statement	GRB	Winnebago	27 min
Jun 18, 12:19 AM CDT	Special Weather Statement	GRB	Calumet, Manitowoc	41 min
Jun 18, 2:43 AM CDT	Areal Flood Advisory	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago, Wood	6 hr
Jun 18, 10:21 AM CDT	River Flood Warning	GRB	Oneida	35 hr
Jun 18, 11:30 AM CDT	River Flood Warning	GRB	Waupaca	5 days
Jun 18, 11:32 AM CDT	River Flood Warning	GRB	Waupaca	3 days
Jun 18, 3:52 PM CDT	River Flood Advisory	GRB	Oneida	36 hr

Nearby

Special Weather Statements in Wisconsin, 2018 Every special weather statement in 2018

Sources

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