Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 112, NWS Milwaukee, WI

April 27, 2026Columbia County, Dodge County, Fond du Lac County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Apr 27, 2026, 9:43 PM CDT for Columbia County, Dodge County, Fond du Lac County, Wisconsin. It was in force for 27 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: Apr 27, 2026, 9:43 PM CDT (02:43 UTC)
Expired: Apr 27, 2026, 10:10 PM CDT
In force: 27 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Columbia County, WI, Dodge County, WI, Fond du Lac County, WI

The radar

The Milwaukee radar (KMKX), 68 km from the middle of the area, began a volume at 02:41 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

Lincoln, IL (KILX), launched 00:00Z, 2.7 hours before the alert went out and 378 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: 1082 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: -57 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 Apr 27, 1:40 PM CDT, 8 hours 3 minutes earlier.

Area forecast discussion, Apr 27, 1:40 PM CDT, 8 hours 3 minutes before

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Hazardous weather outlook, Apr 27, 1:07 PM CDT, 8 hours 36 minutes before

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In the hours before

Local storm report, Apr 27, 4:45 PM CDT, 4 hours 58 minutes before

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Local storm report, Apr 27, 4:57 PM CDT, 4 hours 46 minutes before

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Local storm report, Apr 27, 5:04 PM CDT, 4 hours 39 minutes before

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Local storm report, Apr 27, 5:24 PM CDT, 4 hours 19 minutes before

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Local storm report, Apr 27, 5:37 PM CDT, 4 hours 6 minutes before

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Local storm report, Apr 27, 6:13 PM CDT, 3 hours 30 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
Apr 27, 7:18 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	42 min
Apr 27, 7:54 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	21 min
Apr 27, 7:55 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	36 min
Apr 27, 8:21 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	39 min
Apr 27, 8:58 PM CDT	Special Weather Statement	MKX	Columbia	47 min
Apr 27, 9:06 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dodge, Fond du Lac, Green Lake	39 min
Apr 27, 9:11 PM CDT	Special Weather Statement	MKX	Columbia	34 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2026 Every severe thunderstorm warning in 2026

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.