Alert archive / Wisconsin / Special Weather Statements in 2018

Special Weather Statement, NWS Green Bay, WI

July 12, 2018Florence County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jul 12, 2018, 11:13 PM CDT for Florence County, Wisconsin. It was in force for 62 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: Jul 12, 2018, 11:13 PM CDT (04:13 UTC)
Expired: Jul 13, 2018, 12:15 AM CDT
In force: 62 min
Issued by: NWS Green Bay, WI

County Florence County, WI

The radar

The Marquette radar (KMQT), 99 km from the middle of the area, began a volume at 04:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.2 hours before the alert went out and 136 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: 234 J/kg
Mixed-layer CIN: -260 J/kg
Mixed-layer LCL: 1129 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 266 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Jul 12, 11:12 PM CDT, 1 minute earlier.

Area forecast discussion, Jul 12, 11:12 PM CDT, 1 minute before

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Hazardous weather outlook, Jul 12, 3:25 PM CDT, 7 hours 48 minutes before

Hazardous Weather Outlook
National Weather Service Green Bay WI
325 PM CDT Thu Jul 12 2018

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-132030-
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-
325 PM CDT Thu Jul 12 2018

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

.DAY ONE...Tonight

Another round of thunderstorms is expected from early this evening
through late tonight. These storms will be capable of producing
damaging winds, and possibly large hail and localized flooding.
The greatest risk for severe weather looks to be between 7 PM and
midnight.

There is an increased risk of rip currents along the Lake
Michigan shoreline north of Two Rivers tonight.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Thunderstorms are possible at times from Friday through Saturday.
Widespread severe weather is not expected. However, the strongest
storms could produce gusty winds, hail, along with localized
flooding.

There is a chance of thunderstorms again on Sunday into Monday.
It is too early to determine whether any of these storms will
become severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

LMZ521-522-541>543-132030-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
325 PM CDT Thu Jul 12 2018

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

.DAY ONE...Tonight

The chance for storms will return late tonight. Some of the
storms could produce gusty winds and small hail that would pose a
significant hazard to mariners.

Increasing south winds will lead to hazardous conditions for
small craft tonight on Lake Michigan, mainly north of Two Rivers.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

There are chances for storms at times from Friday through Monday.
Some of the storms could produce gusty winds and small hail that
would pose a significant hazard to mariners.

MG/MPC

In the hours before

Special weather statement, Jul 12, 9:20 PM CDT, 1 hour 53 minutes before

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Special weather statement, Jul 12, 9:43 PM CDT, 1 hour 30 minutes before

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Local storm report, Jul 12, 9:49 PM CDT, 1 hour 24 minutes before

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Special weather statement, Jul 12, 10:03 PM CDT, 1 hour 10 minutes before

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Special weather statement, Jul 12, 10:28 PM CDT, 45 minutes before

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Special weather statement, Jul 12, 11:13 PM 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
Jul 12, 7:19 PM CDT	Special Weather Statement	GRB	Lincoln, Oneida, Wood	116 min
Jul 12, 8:23 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Marathon, Wood	67 min
Jul 12, 8:40 PM CDT	Special Weather Statement	GRB	Oneida	65 min
Jul 12, 9:15 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	37 min
Jul 12, 9:43 PM CDT	Special Weather Statement	GRB	Oneida	62 min
Jul 12, 10:03 PM CDT	Special Weather Statement	GRB	Portage, Shawano, Waupaca, Waushara	57 min
Jul 12, 10:28 PM CDT	Special Weather Statement	GRB	Florence, Forest	62 min
Jul 13, 10:06 AM CDT	Special Weather Statement	GRB	Waushara	54 min
Jul 13, 10:53 AM CDT	Special Weather Statement	GRB	Winnebago	52 min
Jul 13, 11:33 AM CDT	Special Weather Statement	GRB	Calumet, Manitowoc	57 min
Jul 13, 3:17 PM CDT	Special Weather Statement	GRB	Outagamie	58 min
Jul 13, 4:03 PM CDT	Special Weather Statement	GRB	Calumet, Manitowoc, Winnebago	57 min
Jul 13, 4:36 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Manitowoc	39 min
Jul 13, 4:53 PM CDT	Special Marine Warning	GRB		2 hr
Jul 13, 5:02 PM CDT	Special Weather Statement	GRB	Calumet, Manitowoc	58 min
Jul 13, 5:16 PM CDT	Special Weather Statement	GRB	Calumet, Manitowoc, Waushara, Winnebago	89 min
Jul 13, 6:07 PM CDT	Areal Flood Advisory	GRB	Manitowoc	3 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; radar from the NEXRAD Level II archive.