Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 24, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 6, 2021, 4:58 PM CDT for Dodge County, Jefferson 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 outline as issued.
The facts
- Issued
- Aug 6, 2021, 4:58 PM CDT (21:58 UTC)
- Expired
- Aug 6, 2021, 5:30 PM CDT
- In force
- 32 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Dodge County, WI, Jefferson County, WI
The radar
The Milwaukee radar (KMKX), 39 km from the middle of the area, began a volume at 22:00 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.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.0 hours before the alert went out and 152 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
- 132 J/kg
- Mixed-layer CIN
- -114 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
071
WUUS53 KMKX 062158
SVRMKX
WIC027-055-062230-
/O.NEW.KMKX.SV.W.0024.210806T2158Z-210806T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
458 PM CDT Fri Aug 6 2021
The National Weather Service in Milwaukee/Sullivan has issued a
* Severe Thunderstorm Warning for...
Northwestern Jefferson County in southeastern Wisconsin...
Southwestern Dodge County in southeastern Wisconsin...
* Until 530 PM CDT.
* At 457 PM CDT, a severe thunderstorm was located near Waterloo,
moving east at 20 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...
Watertown, Waterloo, Reeseville, Richwood, Lowell and Hubbleton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4319 8874 4317 8901 4327 8901 4335 8883
TIME...MOT...LOC 2157Z 252DEG 17KT 4323 8892
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
HANSEN1 follow-up statement
864
WWUS53 KMKX 062216
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
516 PM CDT Fri Aug 6 2021
WIC027-055-062230-
/O.CON.KMKX.SV.W.0024.000000T0000Z-210806T2230Z/
Jefferson WI-Dodge WI-
516 PM CDT Fri Aug 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTH CENTRAL JEFFERSON AND SOUTHWESTERN DODGE COUNTIES...
At 515 PM CDT, a severe thunderstorm was located near Watertown,
moving east at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Watertown, Reeseville, Richwood and Hubbleton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4317 8895 4327 8894 4333 8882 4319 8874
TIME...MOT...LOC 2215Z 262DEG 11KT 4323 8886
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
HANSENThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 3:06 PM CDT | Special Weather Statement | MKX | Calumet | 24 min |
| Aug 6, 3:44 PM CDT | Special Weather Statement | MKX | Sheboygan | 31 min |
| Aug 6, 3:48 PM CDT | Special Marine Warning | MKX | 42 min | |
| Aug 6, 4:04 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Sheboygan | 41 min |
| Aug 6, 4:09 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac | 39 min |
| Aug 6, 4:21 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 24 min |
| Aug 6, 4:23 PM CDT | Special Marine Warning | MKX | 52 min | |
| Aug 6, 4:38 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 52 min |
| Aug 6, 4:41 PM CDT | Special Marine Warning | MKX | 64 min | |
| Aug 6, 5:06 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan | 24 min |
| Aug 6, 5:08 PM CDT | Special Marine Warning | MKX | 52 min | |
| Aug 6, 5:23 PM CDT | Special Marine Warning | MKX | 111 min | |
| Aug 6, 5:26 PM CDT | Special Weather Statement | MKX | Dodge, Ozaukee, Washington, Waukesha | 94 min |
| Aug 6, 6:22 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 38 min |
| Aug 6, 6:53 PM CDT | Special Weather Statement | MKX | Jefferson, Milwaukee, Waukesha | 82 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.