Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 18, NWS Green Bay, WI

May 12, 2022Oconto County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at May 12, 2022, 5:22 PM CDT for Oconto County, Wisconsin. It was in force for 23 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: May 12, 2022, 5:22 PM CDT (22:22 UTC)
Expired: May 12, 2022, 5:45 PM CDT
In force: 23 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Oconto County, WI

The radar

The Green Bay radar (KGRB), 56 km from the middle of the area, began a volume at 22:21 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 12, 3:04 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.4 hours before the alert went out and 58 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: 1765 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 752 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 239 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.2

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 May 12, 3:17 PM CDT, 2 hours 5 minutes earlier.

Area forecast discussion, May 12, 3:17 PM CDT, 2 hours 5 minutes before

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Hazardous weather outlook, May 12, 3:18 PM CDT, 2 hours 4 minutes before

Hazardous Weather Outlook
National Weather Service Green Bay WI
318 PM CDT Thu May 12 2022

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-
318 PM CDT Thu May 12 2022

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

.DAY ONE...Tonight

Strong to severe scattered thunderstorms could produce large hail
and gusty winds across central, north-central, and northeast
Wisconsin early this evening.

Additional thunderstorms are possible later tonight as a complex
arrives from the west. These storms are expected to dissipate as
they track over central and north-central Wisconsin.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

There is a chance of thunderstorms Friday afternoon and Friday
night. Some of the storms could become strong or severe with
damaging winds and large hail.

There are small chances of thunderstorms at times this weekend.
There is an small potential for severe storms on Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation could be needed across northern Wisconsin this
afternoon and evening, and again Friday afternoon and evening across
much of the area.

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-
318 PM CDT Thu May 12 2022

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

.DAY ONE...Tonight

Isolated thunderstorms are possible this evening across the waters
of Lake Michigan. Any thunderstorms could pose a hazard to
mariners.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

There is a chance of thunderstorms Friday afternoon and Friday night
that may produce strong winds and large hail. Isolated thunderstorms
are possible at times this weekend that could pose a hazard to
mariners.

Areas of dense marine fog are possible at times through Saturday
afternoon. High waves could create conditions hazardous to small
craft Friday on Lake Michigan.

Kurimski/KLJ

In the hours before

Local storm report, May 12, 4:11 PM CDT, 1 hour 11 minutes before

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Local storm report, May 12, 4:12 PM CDT, 1 hour 10 minutes before

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Local storm report, May 12, 4:20 PM CDT, 1 hour 2 minutes before

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Local storm report, May 12, 4:49 PM CDT, 33 minutes before

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Special weather statement, May 12, 4:49 PM CDT, 33 minutes before

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Special weather statement, May 12, 4:50 PM CDT, 32 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
May 11, 8:32 PM CDT	Marine Dense Fog Advisory	GRB		16 hr
May 11, 11:22 PM CDT	Special Weather Statement	GRB	Lincoln, Oneida, Vilas	53 min
May 11, 11:52 PM CDT	Special Weather Statement	GRB	Oneida, Vilas	38 min
May 12, 12:48 AM CDT	Special Weather Statement	GRB	Lincoln, Oneida, Vilas	57 min
May 12, 2:31 AM CDT	Special Weather Statement	GRB	Florence, Forest, Langlade, Lincoln, Marathon, Marinette and 3 more	44 min
May 12, 1:49 PM CDT	Special Weather Statement	GRB	Florence, Forest, Langlade, Marathon, Marinette, Menominee and 3 more	86 min
May 12, 2:23 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Marathon, Menominee, Shawano	22 min
May 12, 2:37 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Oconto	53 min
May 12, 2:44 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Marathon, Menominee, Shawano	46 min
May 12, 2:54 PM CDT	Special Weather Statement	GRB	Vilas	51 min
May 12, 2:57 PM CDT	Severe Thunderstorm Warning	GRB	Marinette, Oconto	48 min
May 12, 3:04 PM CDT	Areal Flood Advisory	GRB	Langlade, Marathon, Marinette, Menominee, Oconto, Shawano	3 hr
May 12, 3:41 PM CDT	Special Weather Statement	GRB	Oneida, Vilas	49 min
May 12, 3:43 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Oconto	47 min
May 12, 3:48 PM CDT	Severe Thunderstorm Warning	GRB	Marinette, Oconto	42 min
May 12, 4:09 PM CDT	Severe Thunderstorm Warning	GRB	Oneida, Vilas	32 min
May 12, 4:21 PM CDT	Special Marine Warning	GRB		50 min
May 12, 4:28 PM CDT	Severe Thunderstorm Warning	GRB	Florence, Forest	58 min
May 12, 4:49 PM CDT	Special Weather Statement	GRB	Lincoln, Oneida	86 min
May 12, 4:50 PM CDT	Special Weather Statement	GRB	Marinette, Menominee, Oconto, Shawano	85 min
May 12, 6:01 PM CDT	Special Weather Statement	GRB	Langlade	59 min
May 12, 6:21 PM CDT	Areal Flood Advisory	GRB	Langlade, Marathon, Shawano	103 min
May 12, 6:34 PM CDT	Severe Thunderstorm Warning	GRB	Oconto	26 min
May 12, 6:47 PM CDT	Areal Flood Advisory	GRB	Marinette, Oconto	95 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2022 Every severe thunderstorm warning in 2022

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.