Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 17, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 29, 2021, 12:57 AM CDT for Dodge County, Washington County, Wisconsin. It was in force for 48 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 29, 2021, 12:57 AM CDT (05:57 UTC)
- Expired
- Jul 29, 2021, 1:45 AM CDT
- In force
- 48 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Dodge County, WI, Washington County, WI
The radar
The Milwaukee radar (KMKX), 54 km from the middle of the area, began a volume at 06:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 29, 1:00 AM CDT | TSTM WND DMG | Clyman, WI | MULTIPLE TREES DOWN IN CLYMAN. TIME ESTIMATED FROM RADAR. |
| Jul 29, 1:13 AM CDT | TSTM WND DMG | 2 E Erin, WI | LARGE TREES DOWN ALONG HIGHWAY 167 NEAR HOLY HILL. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 28, 7:17 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 6.0 hours before the alert went out and 119 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.
- Mixed-layer CAPE
- 593 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 1088 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
258
WUUS53 KMKX 290557
SVRMKX
WIC027-131-290645-
/O.NEW.KMKX.SV.W.0017.210729T0557Z-210729T0645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
1257 AM CDT Thu Jul 29 2021
The National Weather Service in Milwaukee/Sullivan has issued a
* Severe Thunderstorm Warning for...
Washington County in southeastern Wisconsin...
Dodge County in southeastern Wisconsin...
* Until 145 AM CDT.
* At 1256 AM CDT, severe thunderstorms were located along a line
extending from near Lomira to near Waterloo, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
West Bend, Watertown, Beaver Dam, Hartford, Waupun, Jackson,
Mayville, Slinger, Kewaskum, Horicon, Juneau, Germantown, Lomira,
Theresa, Newburg, Hustisford, Iron Ridge, Burnett, Richfield and
Addison.
This includes the following Location Horicon Marsh.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4319 8807 4320 8901 4350 8901 4363 8882
4363 8853 4358 8840 4354 8840 4354 8829
4346 8804
TIME...MOT...LOC 0556Z 289DEG 32KT 4357 8841 4319 8893
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
HANSENThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 11:18 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Green Lake, Marquette | 72 min |
| Jul 28, 11:41 PM CDT | Tornado Warning | MKX | Fond du Lac | 20 min |
| Jul 28, 11:48 PM CDT | Special Weather Statement | MKX | Sauk | 42 min |
| Jul 28, 11:55 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Washington | 65 min |
| Jul 29, 12:22 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Sauk | 53 min |
| Jul 29, 12:26 AM CDT | Tornado Warning | MKX | Columbia, Dodge | 31 min |
| Jul 29, 12:43 AM CDT | Tornado Warning | MKX | Columbia, Dane, Dodge, Jefferson | 32 min |
| Jul 29, 12:45 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Jefferson | 45 min |
| Jul 29, 12:51 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Iowa, Sauk | 39 min |
| Jul 29, 1:07 AM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 38 min |
| Jul 29, 1:08 AM CDT | Tornado Warning | MKX | Jefferson, Waukesha | 37 min |
| Jul 29, 1:17 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Jefferson, Kenosha, Milwaukee, Racine, Rock and 2 more | 67 min |
| Jul 29, 1:24 AM CDT | Special Marine Warning | MKX | 96 min | |
| Jul 29, 1:31 AM CDT | Tornado Warning | MKX | Milwaukee, Racine, Walworth, Waukesha | 44 min |
| Jul 29, 1:36 AM CDT | Tornado Warning | MKX | Rock | 24 min |
| Jul 29, 1:51 AM CDT | Special Weather Statement | MKX | Green, Lafayette | 24 min |
| Jul 29, 4:06 AM CDT | Small Craft Advisory | MKX | 33 hr | |
| Jul 29, 2:02 PM CDT | Beach Hazards Statement | MKX | Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan | 29 hr |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.