Alert archive / Wisconsin / Special Weather Statements in 2025

Special Weather Statement, NWS Milwaukee, WI

August 9, 20254 counties in Wisconsin

NWS Milwaukee, WI issued this special weather statement at Aug 9, 2025, 1:17 PM CDT for 4 counties in Wisconsin. It was in force for 43 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: Aug 9, 2025, 1:17 PM CDT (18:17 UTC)
Expired: Aug 9, 2025, 2:00 PM CDT
In force: 43 min
Issued by: NWS Milwaukee, WI
Hail: 0.50 in
Wind: 50

Counties Columbia County, WI, Green Lake County, WI, Marquette County, WI, Sauk County, WI

The radar

The Milwaukee radar (KMKX), 98 km from the middle of the area, began a volume at 18:19 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 12:00Z, 6.3 hours before the alert went out and 144 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: 1553 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1070 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Milwaukee, WI wrote its last area forecast discussion before this special weather statement went out at Aug 9, 10:21 AM CDT, 2 hours 56 minutes earlier.

Area forecast discussion, Aug 9, 10:21 AM CDT, 2 hours 56 minutes before

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Hazardous weather outlook, Aug 9, 10:26 AM CDT, 2 hours 51 minutes before

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In the hours before

Special weather statement, Aug 9, 12:37 PM CDT, 40 minutes before

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Special weather statement, Aug 9, 1:17 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
117 PM CDT Sat Aug 9 2025

WIZ046-047-056-057-091900-
Columbia WI-Green Lake WI-Marquette WI-Sauk WI-
117 PM CDT Sat Aug 9 2025

...STRONG THUNDERSTORMS WILL IMPACT GREEN LAKE...COLUMBIA...MARQUETTE
AND SAUK COUNTIES THROUGH 200 PM CDT...

At 116 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles north of Westfield to 11 miles
northeast of Spring Green. Movement was northeast at 50 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...
Baraboo, Portage, Reedsburg, Berlin, Columbus, Prairie Du Sac, Sauk
City, Wisconsin Dells, Lake Wisconsin, Lodi, Lake Delton, Poynette,
Pardeeville, Randolph, Fall River, Montello, Markesan, West Baraboo,
Westfield, and Princeton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4398 8889 4364 8889 4363 8901 4329 8901
      4329 8971 4324 8977 4320 9017 4364 8990
      4364 8960 4398 8960
TIME...MOT...LOC 1816Z 243DEG 42KT 4401 8948 4332 8997

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

BOXELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 12:37 PM CDT	Special Weather Statement	MKX	Sauk	38 min
Aug 9, 2:46 PM CDT	Special Weather Statement	MKX	Dodge	44 min
Aug 9, 3:06 PM CDT	Special Weather Statement	MKX	Dodge, Jefferson, Washington	24 min
Aug 9, 3:26 PM CDT	Special Marine Warning	MKX		2 hr
Aug 9, 3:41 PM CDT	Special Weather Statement	MKX	Dodge, Ozaukee, Sheboygan, Washington	64 min
Aug 9, 4:03 PM CDT	Special Marine Warning	MKX		87 min
Aug 9, 4:44 PM CDT	Special Weather Statement	MKX	Ozaukee	31 min
Aug 9, 5:11 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Ozaukee, Waukesha	34 min
Aug 9, 5:15 PM CDT	Areal Flood Advisory	MKX	Milwaukee, Ozaukee, Washington, Waukesha	3 hr
Aug 9, 5:20 PM CDT	Special Marine Warning	MKX		115 min
Aug 9, 5:47 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Waukesha	16 min
Aug 9, 6:32 PM CDT	Special Weather Statement	MKX	Milwaukee	13 min

Nearby

Special Weather Statements in Wisconsin, 2025 Every special weather statement in 2025

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.