Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 11, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 28, 2021, 2:28 AM CDT for Lafayette County, Wisconsin. It was in force for 47 min. 1 report 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 28, 2021, 2:28 AM CDT (07:28 UTC)
- Expired
- Jul 28, 2021, 3:15 AM CDT
- In force
- 47 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lafayette County, WI
The radar
The Quad Cities radar (KDVN), 119 km from the middle of the area, began a volume at 07:32 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 28, 2:40 AM CDT | TSTM WND DMG | 2 N Gratiot, WI | A FEW TREES DOWN. TIME ESTIMATED BASED ON RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 7.5 hours before the alert went out and 117 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
- 1554 J/kg
- Mixed-layer CIN
- -284 J/kg
- Mixed-layer LCL
- 1342 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
138
WUUS53 KMKX 280728
SVRMKX
WIC065-280815-
/O.NEW.KMKX.SV.W.0011.210728T0728Z-210728T0815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
228 AM CDT Wed Jul 28 2021
The National Weather Service in Milwaukee/Sullivan has issued a
* Severe Thunderstorm Warning for...
Lafayette County in south central Wisconsin...
* Until 315 AM CDT.
* At 228 AM CDT, a severe thunderstorm was located near Shullsburg,
or 10 miles southwest of Darlington, moving east 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...
Darlington, Shullsburg, Belmont, Benton, Argyle, Wiota, New
Diggings, South Wayne, Elk Grove, Lamont, Gratiot, Lead Mine and
Woodford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4274 9043 4272 8984 4251 8984 4251 9042
TIME...MOT...LOC 0728Z 281DEG 28KT 4262 9030
HAIL...1.00IN
WIND...60MPH
$$
MRC3 follow-up statements
557
WWUS53 KMKX 280744
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
244 AM CDT Wed Jul 28 2021
WIC065-280815-
/O.CON.KMKX.SV.W.0011.000000T0000Z-210728T0815Z/
Lafayette WI-
244 AM CDT Wed Jul 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT
FOR LAFAYETTE COUNTY...
At 243 AM CDT, a severe thunderstorm was located near Shullsburg, or
near Darlington, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Darlington, Shullsburg, Belmont, Benton, Argyle, Wiota, New Diggings,
South Wayne, Elk Grove, Lamont, Gratiot, Lead Mine and Woodford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4274 9043 4272 8984 4251 8984 4251 9042
TIME...MOT...LOC 0743Z 281DEG 28KT 4260 9014
HAIL...1.00IN
WIND...60MPH
$$
MRC802 WWUS53 KMKX 280756 SVSMKX Severe Weather Statement National Weather Service Milwaukee/Sullivan WI 256 AM CDT Wed Jul 28 2021 WIC065-280815- /O.CON.KMKX.SV.W.0011.000000T0000Z-210728T0815Z/ Lafayette WI- 256 AM CDT Wed Jul 28 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT FOR SOUTHEASTERN LAFAYETTE COUNTY... At 256 AM CDT, a severe thunderstorm was located near Apple River, or 8 miles south of Darlington, moving east at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Darlington, Shullsburg, Wiota, South Wayne, Gratiot and Woodford. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4268 9015 4266 8984 4251 8984 4251 9033 TIME...MOT...LOC 0756Z 287DEG 20KT 4255 9011 HAIL...<.75IN WIND...60MPH $$ MRC
805
WWUS53 KMKX 280806
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
306 AM CDT Wed Jul 28 2021
WIC065-280816-
/O.EXP.KMKX.SV.W.0011.000000T0000Z-210728T0815Z/
Lafayette WI-
306 AM CDT Wed Jul 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAFAYETTE COUNTY
WILL EXPIRE AT 315 AM CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 4268 9015 4266 8984 4251 8984 4251 9033
TIME...MOT...LOC 0806Z 281DEG 28KT 4254 9006
$$
MRCThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 12:12 AM CDT | Special Weather Statement | MKX | Iowa, Sauk | 63 min |
| Jul 28, 1:12 AM CDT | Special Weather Statement | MKX | Columbia, Dane, Iowa, Sauk | 63 min |
| Jul 28, 1:52 AM CDT | Special Weather Statement | MKX | Iowa, Lafayette | 53 min |
| Jul 28, 2:09 AM CDT | Special Weather Statement | MKX | Dane | 66 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.