Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 1, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 11, 2021, 3:06 PM CDT for Columbia County, Dane County, Sauk County, Wisconsin. It was in force for 24 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
- Jun 11, 2021, 3:06 PM CDT (20:06 UTC)
- Expired
- Jun 11, 2021, 3:30 PM CDT
- In force
- 24 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Columbia County, WI, Dane County, WI, Sauk County, WI
The radar
The Milwaukee radar (KMKX), 98 km from the middle of the area, began a volume at 20:08 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 12:00Z, 8.1 hours before the alert went out and 178 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1468 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
679
WUUS53 KMKX 112006
SVRMKX
WIC021-025-111-112030-
/O.NEW.KMKX.SV.W.0001.210611T2006Z-210611T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
306 PM CDT Fri Jun 11 2021
The National Weather Service in Milwaukee/Sullivan has issued a
* Severe Thunderstorm Warning for...
Southwestern Columbia County in south central Wisconsin...
Northwestern Dane County in south central Wisconsin...
East central Sauk County in south central Wisconsin...
* Until 330 PM CDT.
* At 305 PM CDT, a severe thunderstorm was located near Prairie Du
Sac, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Prairie Du Sac, Sauk City, Lake Wisconsin, Lodi, Dane, Arlington,
Bluffview, Merrimac, Harmony Grove, Okee and Marxville.
This includes the following Location Gibraltar Rock Natural Area
County Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4337 8980 4344 8968 4334 8934 4315 8966
TIME...MOT...LOC 2005Z 313DEG 24KT 4336 8968
HAIL...1.00IN
WIND...60MPH
$$
HANSEN1 follow-up statement
229
WWUS53 KMKX 112026
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
326 PM CDT Fri Jun 11 2021
WIC021-025-111-112036-
/O.EXP.KMKX.SV.W.0001.000000T0000Z-210611T2030Z/
Columbia WI-Dane WI-Sauk WI-
326 PM CDT Fri Jun 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN COLUMBIA...
NORTHWESTERN DANE AND EAST CENTRAL SAUK COUNTIES WILL EXPIRE AT 330
PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
is still possible with this thunderstorm.
LAT...LON 4337 8980 4344 8968 4334 8934 4315 8966
TIME...MOT...LOC 2026Z 313DEG 24KT 4327 8955
$$
HANSENThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 12:25 PM CDT | Special Weather Statement | MKX | Rock | 50 min |
| Jun 11, 1:00 PM CDT | Special Weather Statement | MKX | Rock | 45 min |
| Jun 11, 2:36 PM CDT | Special Weather Statement | MKX | Sauk | 54 min |
| Jun 11, 2:50 PM CDT | Special Weather Statement | MKX | Green | 55 min |
| Jun 11, 3:24 PM CDT | Special Weather Statement | MKX | Lafayette | 51 min |
| Jun 11, 3:49 PM CDT | Special Weather Statement | MKX | Marquette | 56 min |
| Jun 11, 4:13 PM CDT | Special Weather Statement | MKX | Columbia, Dane, Marquette | 62 min |
| Jun 11, 4:33 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Dodge, Jefferson | 14 min |
| Jun 11, 4:54 PM CDT | Special Weather Statement | MKX | Waukesha | 51 min |
| Jun 11, 5:05 PM CDT | Special Weather Statement | MKX | Dodge, Jefferson, Waukesha | 40 min |
| Jun 11, 5:55 PM CDT | Special Weather Statement | MKX | Jefferson, Walworth, Waukesha | 65 min |
| Jun 11, 6:46 PM CDT | Special Weather Statement | MKX | Milwaukee, Racine | 29 min |
| Jun 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.