Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 137, NWS Milwaukee, WI

September 22, 2025Sauk County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Sep 22, 2025, 7:05 AM CDT for Sauk County, Wisconsin. It was in force for 40 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: Sep 22, 2025, 7:05 AM CDT (12:05 UTC)
Expired: Sep 22, 2025, 7:45 AM CDT
In force: 40 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Sauk County, WI

The radar

The La Crosse radar (KARX), 109 km from the middle of the area, began a volume at 12:08 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

Davenport, (KDVN), launched 12:00Z, 0.1 hours before the alert went out and 206 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: 304 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1026 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: -32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 22, 4:10 AM CDT, 2 hours 55 minutes earlier.

Area forecast discussion, Sep 22, 4:10 AM CDT, 2 hours 55 minutes before

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Hazardous weather outlook, Sep 22, 4:51 AM CDT, 2 hours 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 22, 4:19 AM CDT	Dense Fog Advisory	MKX	Ozaukee, Sheboygan, Washington	6 hr
Sep 22, 4:51 AM CDT	Marine Dense Fog Advisory	MKX		9 hr
Sep 22, 7:36 AM CDT	Special Weather Statement	MKX	Sauk	39 min
Sep 22, 7:41 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	49 min
Sep 22, 7:56 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Marquette	49 min
Sep 22, 8:25 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dodge, Fond du Lac, Green Lake	50 min
Sep 22, 9:04 AM CDT	Special Weather Statement	MKX	Fond du Lac	56 min
Sep 22, 9:19 AM CDT	Special Weather Statement	MKX	Dodge, Washington	41 min
Sep 22, 10:28 AM CDT	Special Weather Statement	MKX	Ozaukee	47 min
Sep 22, 10:33 AM CDT	Special Weather Statement	MKX	Ozaukee	27 min
Sep 22, 2:14 PM CDT	Marine Dense Fog Advisory	MKX		17 hr
Sep 22, 5:59 PM CDT	Severe Thunderstorm Warning	MKX	Iowa	44 min
Sep 22, 6:34 PM CDT	Special Weather Statement	MKX	Lafayette	41 min
Sep 22, 6:47 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	26 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2025 Every severe thunderstorm warning 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.