Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 137, NWS Milwaukee, WI

June 25, 2024Rock County, Walworth County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 25, 2024, 7:42 PM CDT for Rock County, Walworth County, 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 counties it named.

The facts

Issued: Jun 25, 2024, 7:42 PM CDT (00:42 UTC)
Expired: Jun 25, 2024, 8:15 PM CDT
In force: 33 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Rock County, WI, Walworth County, WI

The radar

The Milwaukee radar (KMKX), 39 km from the middle of the area, began a volume at 00:41 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.7 hours before the alert went out and 209 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: 2228 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Jun 25, 3:00 PM CDT, 4 hours 42 minutes earlier.

Area forecast discussion, Jun 25, 3:00 PM CDT, 4 hours 42 minutes before

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Hazardous weather outlook, Jun 25, 2:25 PM CDT, 5 hours 17 minutes before

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In the hours before

Local storm report, Jun 25, 2:21 PM CDT, 5 hours 21 minutes before

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Local storm report, Jun 25, 2:24 PM CDT, 5 hours 18 minutes before

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Local storm report, Jun 25, 3:49 PM CDT, 3 hours 53 minutes before

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Local storm report, Jun 25, 4:00 PM CDT, 3 hours 42 minutes before

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Local storm report, Jun 25, 4:15 PM CDT, 3 hours 27 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
Jun 25, 7:31 PM CDT	Special Weather Statement	MKX	Green, Rock	44 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.