Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 7, NWS Milwaukee, WI

February 8, 20244 counties in Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Feb 8, 2024, 6:42 PM CST for 4 counties in Wisconsin. It was in force for 33 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: Feb 8, 2024, 6:42 PM CST (00:42 UTC)
Expired: Feb 8, 2024, 7:15 PM CST
In force: 33 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Jefferson County, WI, Rock County, WI, Walworth County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 30 km from the middle of the area, began a volume at 00:46 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.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 8 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.7 hours before the alert went out and 188 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 974 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

543 
WUUS53 KMKX 090042
SVRMKX
WIC055-105-127-133-090115-
/O.NEW.KMKX.SV.W.0007.240209T0042Z-240209T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
642 PM CST Thu Feb 8 2024

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for...
  Northwestern Walworth County in southeastern Wisconsin...
  Northeastern Rock County in south central Wisconsin...
  West central Waukesha County in southeastern Wisconsin...
  Southern Jefferson County in southeastern Wisconsin...

* Until 715 PM CST.

* At 642 PM CST, severe thunderstorms were located along a line
  extending from Fort Atkinson to near Edgerton, moving northeast at
  50 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Whitewater, Fort Atkinson, Jefferson, Milton, Edgerton, Oconomowoc,
  Palmyra, Lake Koshkonong, Rome, Hebron, Sullivan, Oconomowoc Lake,
  Busseyville, Summit, Indianford, Helenville, and Nws
  Milwaukee/sullivan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4277 8912 4285 8908 4285 8901 4291 8901
      4297 8895 4304 8875 4309 8846 4281 8861
TIME...MOT...LOC 0042Z 244DEG 42KT 4292 8888 4280 8902 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

HEEREN

2 follow-up statements

063 
WWUS53 KMKX 090056
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
656 PM CST Thu Feb 8 2024

WIC055-105-127-133-090115-
/O.CON.KMKX.SV.W.0007.000000T0000Z-240209T0115Z/
Walworth WI-Rock WI-Waukesha WI-Jefferson WI-
656 PM CST Thu Feb 8 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CST
FOR NORTHWESTERN WALWORTH...NORTHEASTERN ROCK...WEST CENTRAL WAUKESHA
AND SOUTHEASTERN JEFFERSON COUNTIES...

At 655 PM CST, severe thunderstorms were located along a line
extending from 7 miles east of Jefferson to near Fort Atkinson,
moving east at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Whitewater, Fort Atkinson, Oconomowoc, Palmyra, Lake Koshkonong,
Rome, Hebron, Sullivan, Oconomowoc Lake, Helenville, Summit, and Nws
Milwaukee/sullivan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4280 8870 4282 8895 4304 8873 4309 8846
      4281 8861
TIME...MOT...LOC 0055Z 267DEG 26KT 4299 8867 4287 8881 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

HEEREN

328 
WWUS53 KMKX 090112
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
712 PM CST Thu Feb 8 2024

WIC055-105-127-133-090122-
/O.EXP.KMKX.SV.W.0007.000000T0000Z-240209T0115Z/
Walworth WI-Rock WI-Waukesha WI-Jefferson WI-
712 PM CST Thu Feb 8 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WALWORTH...
NORTHEASTERN ROCK...WEST CENTRAL WAUKESHA AND SOUTHEASTERN JEFFERSON
COUNTIES WILL EXPIRE AT 715 PM CST...

The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 4280 8870 4282 8895 4304 8873 4309 8846
      4281 8861
TIME...MOT...LOC 0112Z 270DEG 42KT 4307 8846 4295 8860 

$$

HEEREN

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 Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 8, 3:17 PM CST, 3 hours 25 minutes earlier. Its key messages:

Severe thunderstorm threat increasing for late afternoon and early evening.
Well above average to near record highs continue into Friday, before temperatures cool behind a cold front for the weekend.

Area forecast discussion, Feb 8, 3:17 PM CST, 3 hours 25 minutes before

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
317 PM CST Thu Feb 8 2024

.KEY MESSAGES...

- Severe thunderstorm threat increasing for late afternoon and
  early evening.

- Well above average to near record highs continue into Friday,
  before temperatures cool behind a cold front for the weekend.

&&

.SHORT TERM...
Issued 241 PM CST Thu Feb 8 2024

Tonight through Friday night:

N-S band of showers is exiting far ern WI while scattered storms
are approaching south central WI from ern IA. Storms are located
near plume of SBCAPE of 600 J/KG and near approaching shortwave
trough. CAPE should increase at least slightly more, while
effective shear of 40-45 kts continues. Strong low level shear
will also be present with large 0-2KM clockwise hodographs.
Expect scattered to numerous storms, isolated severe, of which
could include large hail or a tornado or two into the early
evening.

The cold front will then pass a little later this evening while
the attendant occluded low moves from nrn MN into Ontario. The
low will then move toward James Bay, Canada on Fri with breezy
swly winds and still mild temps over srn WI.

A shortwave trough and sfc wave of low pressure will then track
from ern KS to the lower Great Lakes Fri nt. Far se WI may be on
the nrn fringes of a shield of pcpn, while another round of cold
advection will occur over the region. Weakening nwly sfc winds
and dry conditions are expected for Sat but cooler.

Gehring

&&

.LONG TERM...
Issued 241 PM CST Thu Feb 8 2024

Sunday through Thursday:

Weak high pressure will then prevail Sun into Mon, although a
shortwave trough passage may bring some clouds on Sun. Low
pressure will then track from the lower MS River Valley across
the srn Ohio Valley on Mon with dry conditions for srn WI.
High pressure will then arrive from the north later on Tue,
moving ewd for Wed. Sswly winds and weak warm advection for Wed
probably followed by a weak cold frontal passage on Thu with
chances for lgt snow. High temps will range from the middle 30s
to lower 40s for next week with lows mainly in the 20s.

Gehring

&&

.AVIATION...
Issued 241 PM CST Thu Feb 8 2024

N-S band of showers is exiting far ern WI while scattered storms
are approaching south central WI from ern IA. Sct-bkn035-050
stratocumulus to cumulus clouds will prevail into the early
evening while scattered storms moves across srn WI. Low Cigs
and vsbys within the storms along with gusty winds and possibly
hail. VFR conditions then will take hold, but areas of MVFR
Cigs will develop early Fri AM north of Madison and could
continue into the early afternoon. Also gusty sly winds today
becoming wly tnt-Fri. LLWS may become a concern tnt.

Gehring

&&

.MARINE...
Issued 241 PM CST Thu Feb 8 2024

Breezy southerly winds will continue into this evening as low
pressure of 29.2 inches over northwest Minnesota moves into
Ontario tonight. A few gusts could approach gale force, but
widespread gales are not expected. Southwest winds will remain
breezy Friday as the low moves across Ontario, with winds
becoming westerly by Saturday behind the low. Winds will become
lighter Sunday into Monday as high pressure of 30.1 inches moves
through the area.

A Small Craft Advisory is now in effect until 5 PM Friday for
breezy sly winds and high waves this evening, becoming breezy
southwest winds late tonight and Friday.

Gehring

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646 until 5 PM
     Friday.

&&

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Hazardous weather outlook, Feb 8, 2:18 PM CST, 4 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
218 PM CST Thu Feb 8 2024

WIZ046-047-051-052-056>060-062>072-092030-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
218 PM CST Thu Feb 8 2024

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.

.DAY ONE...Tonight

There is a chance for thunderstorms today, with a stronger storm
or two not out the question later this afternoon into early
evening.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely not be needed.

LMZ643>646-092030-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
218 PM CST Thu Feb 8 2024

This Hazardous Weather Outlook is for the nearshore waters from
Sheboygan Wisconsin to Winthrop Harbor Illinois.

.DAY ONE...Tonight

A Small Craft Advisory is in effect through Friday due to breeze
winds and building waves.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

The Small Craft Advisory remain in effect through Friday for
breeze west winds and building waves.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-092030-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
218 PM CST Thu Feb 8 2024

This Hazardous Weather Outlook is for the open waters of Lake
Michigan.

.DAY ONE...Tonight

Southerly wind gusts will approach gale force at times today into
tonight.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Southwest winds gusts will approach gale force across northern
Lake Michigan on Friday.

www.weather.gov/mkx

In the hours before

Local storm report, Feb 8, 5:37 PM CST, 1 hour 5 minutes before

Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
537 PM CST Thu Feb 8 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0537 PM     Tornado          2 NNW Albany            42.74N 89.45W
02/08/2024                   Green              WI   Public

            Reports of tornado on the ground tracking
            northeast on the north side of Albany.

&&

TP

Special weather statement, Feb 8, 5:42 PM CST, 1 hour before

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
542 PM CST Thu Feb 8 2024

WIZ047-057-058-063-064-090030-
Dodge WI-Columbia WI-Green Lake WI-Jefferson WI-Dane WI-
542 PM CST Thu Feb 8 2024

...STRONG THUNDERSTORMS WILL IMPACT SOUTH CENTRAL GREEN LAKE...
EASTERN COLUMBIA...NORTHEASTERN DANE...NORTHWESTERN JEFFERSON AND
WESTERN DODGE COUNTIES THROUGH 630 PM CST...

At 542 PM CST, Doppler radar was tracking a cluster of strong
thunderstorms along a line extending from near Rio to 6 miles
southwest of Columbus to near Cottage Grove. Movement was northeast
at 35 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Eastern Madison, Sun Prairie, Beaver Dam, Lake Mills, Columbus,
Marshall, Waterloo, Cottage Grove, Deerfield, Randolph, Fall River,
Markesan, Cambridge, Rio, Cambria, Burnett, Fox Lake, Milford,
Manchester, and Wyocena.

This includes the following highways...
 U.S. Highway 12 between mile markers 269 and 273.
 U.S. Highway 151 between mile markers 105 and 139.
 Interstate 39/90 between mile markers 144 and 145.
 Interstate 94 between mile markers 243 and 264.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4373 8904 4350 8869 4302 8883 4301 8927
      4325 8919 4342 8939
TIME...MOT...LOC 2342Z 219DEG 31KT 4341 8929 4328 8912 4311 8915

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

HEEREN

Local storm report, Feb 8, 5:43 PM CST, 59 minutes before

Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
543 PM CST Thu Feb 8 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0541 PM     Funnel Cloud     2 N Evansville          42.81N 89.30W
02/08/2024                   Rock               WI   Public

            Reports of a funnel near Footville. Base of
            the funnel was blocked by trees, but there
            is reports of debris above the tree line.

&&

TP

Local storm report, Feb 8, 6:09 PM CST, 33 minutes before

Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
609 PM CST Thu Feb 8 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     Tstm Wnd Dmg     5 ENE Evansville        42.80N 89.20W
02/08/2024                   Rock               WI   Public

            Reports of roof damage and large trees
            snapped.

&&

TP

Special weather statement, Feb 8, 6:16 PM CST, 26 minutes before

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
616 PM CST Thu Feb 8 2024

WIZ051-058-059-064-065-090100-
Dodge WI-Waukesha WI-Washington WI-Fond Du Lac WI-Jefferson WI-
616 PM CST Thu Feb 8 2024

...STRONG THUNDERSTORMS WILL IMPACT SOUTHEASTERN FOND DU LAC...
NORTHWESTERN WAUKESHA...WESTERN WASHINGTON...NORTHEASTERN JEFFERSON
AND EASTERN DODGE COUNTIES THROUGH 700 PM CST...

At 615 PM CST, Doppler radar was tracking a cluster of strong
thunderstorms along a line extending from near Waupun to near
Hustisford to near Lake Mills. Movement was northeast at 45 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
West Bend, Watertown, Hartford, Waupun, Mayville, Slinger, Kewaskum,
Horicon, Juneau, Okauchee Lake, Oconomowoc, Johnson Creek, Lomira,
Campbellsport, Theresa, Hustisford, Iron Ridge, Lac La Belle,
Burnett, and Ixonia.

This includes the following highways...
 U.S. Highway 151 between mile markers 139 and 145.
 Interstate 94 between mile markers 264 and 268.
 Wisconsin Highway 26 between mile markers 35 and 53.
 Interstate 41 between mile markers 64 and 93.
 U.S. Highway 45 between mile markers 68 and 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4356 8816 4354 8816 4354 8814 4352 8811
      4316 8832 4307 8883 4349 8872 4359 8884
      4373 8835
TIME...MOT...LOC 0015Z 242DEG 37KT 4356 8876 4332 8871 4311 8885

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

HEEREN

Local storm report, Feb 8, 6:39 PM CST, 3 minutes before

Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
639 PM CST Thu Feb 8 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0620 PM     Tstm Wnd Dmg     6 SSE Rockdale          42.90N 88.98W
02/08/2024                   Jefferson          WI   Trained Spotter

            large tree 1 to 2 feet diameter down at
            intersection of Loga Rd and St Hwy 106. Time
            estimated by radar.

&&

MRC

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 8, 6:16 PM CST	Special Weather Statement	MKX	Dodge, Washington	44 min
Feb 8, 6:22 PM CST	Severe Thunderstorm Warning	MKX	Milwaukee, Racine, Walworth, Waukesha	35 min
Feb 8, 6:24 PM CST	Tornado Warning	MKX	Jefferson	19 min
Feb 8, 6:33 PM CST	Severe Thunderstorm Warning	MKX	Dodge, Jefferson, Washington, Waukesha	27 min
Feb 8, 6:58 PM CST	Severe Thunderstorm Warning	MKX	Washington, Waukesha	17 min
Feb 8, 7:04 PM CST	Special Marine Warning	MKX		86 min
Feb 8, 7:04 PM CST	Special Weather Statement	MKX	Ozaukee, Sheboygan, Washington	26 min
Feb 8, 7:20 PM CST	Special Weather Statement	MKX	Milwaukee, Waukesha	40 min
Feb 8, 8:29 PM CST	Special Marine Warning	MKX		61 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2024 Every severe thunderstorm warning in 2024

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.