Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 53, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 11, 2021, 5:10 PM CDT for Iowa County, Wisconsin. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2021, 5:10 PM CDT (22:10 UTC)
- Expired
- Aug 11, 2021, 6:00 PM CDT
- In force
- 50 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Iowa County, WI
The radar
The La Crosse radar (KARX), 124 km from the middle of the area, began a volume at 22:12 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 11, 12:17 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.2 hours before the alert went out and 163 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
- 2852 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 1040 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 170 m²/s²
- 0-3 km storm-relative helicity
- 193 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted.
607 WUUS53 KMKX 112210 SVRMKX WIC049-112300- /O.NEW.KMKX.SV.W.0053.210811T2210Z-210811T2300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Milwaukee/Sullivan WI 510 PM CDT Wed Aug 11 2021 The National Weather Service in Milwaukee/Sullivan has issued a * Severe Thunderstorm Warning for... Iowa County in south central Wisconsin... * Until 600 PM CDT. * At 510 PM CDT, a severe thunderstorm was located 10 miles south of Muscoda, or 12 miles northwest of Dodgeville, moving east at 40 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Dodgeville, Barneveld, Highland, Ridgeway, Centerville, Linden, Cobb, Clyde, Blue Mound St Park, Blackhawk Lake Rec Area, Governor Dodge St Park and Edmund. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 800 PM CDT for south central Wisconsin. For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4316 8984 4289 8984 4293 9043 4312 9043 TIME...MOT...LOC 2210Z 269DEG 33KT 4304 9036 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.88 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ STUMPF
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 7:05 PM CDT | Special Weather Statement | MKX | Jefferson | 25 min |
| Aug 10, 7:24 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 51 min |
| Aug 10, 7:43 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Ozaukee, Racine | 32 min |
| Aug 10, 8:07 PM CDT | Special Marine Warning | MKX | 53 min | |
| Aug 10, 8:16 PM CDT | Special Marine Warning | MKX | 44 min | |
| Aug 11, 6:44 AM CDT | Small Craft Advisory | MKX | 15 hr | |
| Aug 11, 9:58 AM CDT | Special Weather Statement | MKX | Kenosha, Milwaukee, Racine, Rock, Walworth | 77 min |
| Aug 11, 10:06 AM CDT | Special Marine Warning | MKX | 84 min | |
| Aug 11, 2:46 PM CDT | Severe Thunderstorm Warning | MKX | Green Lake, Marquette | 59 min |
| Aug 11, 4:22 PM CDT | Severe Thunderstorm Warning | MKX | Iowa | 53 min |
| Aug 11, 5:05 PM CDT | Special Weather Statement | MKX | Iowa | 25 min |
| Aug 11, 5:24 PM CDT | Special Weather Statement | MKX | Milwaukee | 36 min |
| Aug 11, 5:49 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Waukesha | 41 min |
| Aug 11, 5:56 PM CDT | Special Marine Warning | MKX | 94 min | |
| Aug 11, 5:58 PM CDT | Special Weather Statement | MKX | Iowa | 47 min |
| Aug 11, 6:04 PM CDT | Tornado Warning | MKX | Iowa | 41 min |
| Aug 11, 6:24 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 53 min |
| Aug 11, 6:34 PM CDT | Tornado Warning | MKX | Dane | 15 min |
| Aug 11, 6:48 PM CDT | Special Marine Warning | MKX | 57 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.