Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 168, NWS Milwaukee, WI

August 27, 2024Rock County, Walworth County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 27, 2024, 4:42 PM CDT for Rock County, Walworth County, Wisconsin. It was in force for 32 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: Aug 27, 2024, 4:42 PM CDT (21:42 UTC)
Expired: Aug 27, 2024, 5:14 PM CDT
In force: 32 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 0.75 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 21:45 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, 9.7 hours before the alert went out and 182 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: 3530 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 1209 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 25 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 Aug 27, 4:03 PM CDT, 39 minutes earlier.

Area forecast discussion, Aug 27, 4:03 PM CDT, 39 minutes before

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Hazardous weather outlook, Aug 27, 2:27 PM CDT, 2 hours 15 minutes before

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In the hours before

Local storm report, Aug 27, 1:19 PM CDT, 3 hours 23 minutes before

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Local storm report, Aug 27, 1:21 PM CDT, 3 hours 21 minutes before

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Local storm report, Aug 27, 1:45 PM CDT, 2 hours 57 minutes before

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Local storm report, Aug 27, 1:54 PM CDT, 2 hours 48 minutes before

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Local storm report, Aug 27, 1:58 PM CDT, 2 hours 44 minutes before

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Local storm report, Aug 27, 3:06 PM CDT, 1 hour 36 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
Aug 27, 12:02 AM CDT	Special Weather Statement	MKX	Marquette	43 min
Aug 27, 12:25 AM CDT	Special Weather Statement	MKX	Green Lake	50 min
Aug 27, 12:49 AM CDT	Special Weather Statement	MKX	Fond du Lac	56 min
Aug 27, 1:03 AM CDT	Special Marine Warning	MKX		87 min
Aug 27, 1:13 AM CDT	Special Weather Statement	MKX	Ozaukee, Sheboygan	47 min
Aug 27, 9:38 AM CDT	Special Weather Statement	MKX	Marquette	37 min
Aug 27, 9:44 AM CDT	Severe Thunderstorm Warning	MKX	Green Lake, Marquette	46 min
Aug 27, 10:22 AM CDT	Special Weather Statement	MKX	Fond du Lac, Green Lake	23 min
Aug 27, 10:43 AM CDT	Special Weather Statement	MKX	Dane	32 min
Aug 27, 10:46 AM CDT	Special Weather Statement	MKX	Fond du Lac	29 min
Aug 27, 10:57 AM CDT	Special Weather Statement	MKX	Columbia	18 min
Aug 27, 11:13 AM CDT	Special Weather Statement	MKX	Dodge, Fond du Lac, Washington	47 min
Aug 27, 11:16 AM CDT	Special Weather Statement	MKX	Jefferson, Washington	44 min
Aug 27, 11:29 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Dodge, Jefferson	31 min
Aug 27, 11:41 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac, Sheboygan, Washington	19 min
Aug 27, 11:50 AM CDT	Special Marine Warning	MKX		115 min
Aug 27, 11:59 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Jefferson, Milwaukee, Ozaukee, Washington, Waukesha	46 min
Aug 27, 12:13 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock, Walworth, Waukesha	32 min
Aug 27, 12:23 PM CDT	Special Marine Warning	MKX		92 min
Aug 27, 12:44 PM CDT	Special Weather Statement	MKX	Kenosha, Milwaukee, Racine, Walworth, Waukesha	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.