Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 17, NWS Green Bay, WI

July 25, 2023Marinette County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 25, 2023, 5:19 PM CDT for Marinette County, Wisconsin. It was in force for 28 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: Jul 25, 2023, 5:19 PM CDT (22:19 UTC)
Expired: Jul 25, 2023, 5:47 PM CDT
In force: 28 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Marinette County, WI

The radar

The Green Bay radar (KGRB), 95 km from the middle of the area, began a volume at 22:23 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

Minneapolis, MN (KMPX), launched 12:00Z, 10.3 hours before the alert went out and 443 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: 187 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 1396 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 25, 4:22 PM CDT, 57 minutes earlier.

Area forecast discussion, Jul 25, 4:22 PM CDT, 57 minutes before

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Hazardous weather outlook, Jul 25, 2:45 PM CDT, 2 hours 34 minutes before

Hazardous Weather Outlook
National Weather Service Green Bay WI
245 PM CDT Tue Jul 25 2023

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-261945-
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-
245 PM CDT Tue Jul 25 2023

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

.DAY ONE...This Afternoon and Tonight

Isolated thunderstorms are possble through early this evening. A
strong storm is possible that may produce brief gusty winds to 40
mph, brief heavy rain and small hail.

An Air Quality Advisory remains in effect until 11 PM for far
eastern WI due to areas of smoke from wildfires in western
Canada. People with heart or lung disease should reduce prolonged
or heavy exertion outside until the smoke diminishes.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

A round of thunderstorms is expected Wedneday morning and early
afternoon, especially across central and east central WI. Strong
storms with heavy rain and gusty winds are the main threats.

There is a chance of thunderstorms at times throughout the week.
Isolated strong to near severe storms are possible on Wednesday
south of a Wisconsin Rapids to Appleton to Kewaunee line.

Very warm temperatures and increasing humidity are expected during
on Thursday. Heat index values could approach 100 degrees on
Thursday afternoon. If you have outdoor plans, be prepared for
very warm and humid conditions.

.SPOTTER INFORMATION STATEMENT...

Formal spotter activation will not be needed this afternoon or
tonight.

LMZ521-522-541>543-261945-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
245 PM CDT Tue Jul 25 2023

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

.DAY ONE...This Afternoon and Tonight

An isolated thunderstorm is possible into early this evening
which could contain brief gusty winds and small hail that would
pose a hazard to mariners.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms are possible at times this week which could pose a
hazard to mariners.

Bersch

In the hours before

Special weather statement, Jul 25, 4:16 PM CDT, 1 hour 3 minutes before

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Special weather statement, Jul 25, 4:38 PM CDT, 41 minutes before

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Special weather statement, Jul 25, 4:56 PM CDT, 23 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 25, 4:16 PM CDT	Special Weather Statement	GRB	Forest	44 min
Jul 25, 4:38 PM CDT	Special Weather Statement	GRB	Winnebago	52 min
Jul 25, 4:56 PM CDT	Special Weather Statement	GRB	Marinette	49 min
Jul 25, 5:40 PM CDT	Special Weather Statement	GRB	Forest	50 min
Jul 25, 5:42 PM CDT	Special Weather Statement	GRB	Menominee	33 min
Jul 25, 5:49 PM CDT	Special Weather Statement	GRB	Marinette	41 min
Jul 25, 5:59 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	34 min
Jul 25, 6:13 PM CDT	Special Weather Statement	GRB	Menominee	47 min
Jul 25, 6:14 PM CDT	Special Weather Statement	GRB	Langlade	46 min
Jul 25, 6:35 PM CDT	Special Weather Statement	GRB	Oconto	40 min
Jul 25, 6:57 PM CDT	Special Weather Statement	GRB	Oconto	48 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2023 Every severe thunderstorm warning in 2023

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.