Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 70, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 28, 2021, 10:57 PM CDT for Dunn County, Pepin County, Pierce County, Wisconsin; Goodhue County, Minnesota. It was in force for 48 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, 10:57 PM CDT (03:57 UTC)
- Expired
- Jul 28, 2021, 11:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Goodhue County, MN, Dunn County, WI, Pepin County, WI, Pierce County, WI
The radar
The Minneapolis radar (KMPX), 102 km from the middle of the area, began a volume at 04:00 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 28, 11:07 PM CDT | TSTM WND GST 60 | 6 Sw Durand, WI | MESONET STATION TT569 GANOE HILL. |
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
Minneapolis, MN (KMPX), launched 00:00Z, 4.0 hours before the alert went out and 105 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
- 4815 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1185 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 374 m²/s²
- 0-3 km storm-relative helicity
- 461 m²/s²
- Significant tornado parameter
- 8.9
- Supercell composite
- 48.1
The text
As transmitted.
568
WUUS53 KMPX 290357
SVRMPX
MNC049-WIC033-091-093-290445-
/O.NEW.KMPX.SV.W.0070.210729T0357Z-210729T0445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1057 PM CDT Wed Jul 28 2021
The National Weather Service in the Twin Cities has issued a
* Severe Thunderstorm Warning for...
Central Goodhue County in southeastern Minnesota...
Pepin County in west central Wisconsin...
Pierce County in west central Wisconsin...
Southern Dunn County in west central Wisconsin...
* Until 1145 PM CDT.
* At 1057 PM CDT, a severe thunderstorm was located 6 miles west of
Plum City, or 12 miles east of Red Wing, moving southeast at 40
mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* This severe thunderstorm will be near...
Plum City and Frontenac around 1105 PM CDT.
Stockholm around 1110 PM CDT.
Other locations in the path of this severe thunderstorm include
Pepin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in the Twin Cities.
&&
LAT...LON 4460 9200 4456 9204 4441 9209 4445 9224
4445 9243 4437 9243 4437 9255 4462 9279
4463 9273 4471 9273 4474 9279 4482 9278
4483 9165 4460 9165
TIME...MOT...LOC 0357Z 317DEG 35KT 4462 9231
HAIL...1.00IN
WIND...70MPH
$$
CTG4 follow-up statements
062
WWUS53 KMPX 290411
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1111 PM CDT Wed Jul 28 2021
WIC033-290420-
/O.CAN.KMPX.SV.W.0070.000000T0000Z-210729T0445Z/
Dunn WI-
1111 PM CDT Wed Jul 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DUNN COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
southeastern Minnesota...and west central Wisconsin.
LAT...LON 4460 9200 4456 9204 4441 9209 4445 9224
4445 9243 4452 9264 4470 9254 4468 9201
TIME...MOT...LOC 0410Z 317DEG 35KT 4452 9218
$$
MNC049-WIC091-093-290445-
/O.CON.KMPX.SV.W.0070.000000T0000Z-210729T0445Z/
Goodhue MN-Pepin WI-Pierce WI-
1111 PM CDT Wed Jul 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR NORTHEASTERN GOODHUE...WESTERN PEPIN AND SOUTHEASTERN PIERCE
COUNTIES...
At 1110 PM CDT, a severe thunderstorm was located near Stockholm, or
12 miles northwest of Wabasha, moving southeast at 40 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Pepin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Twin Cities.
&&
LAT...LON 4460 9200 4456 9204 4441 9209 4445 9224
4445 9243 4452 9264 4470 9254 4468 9201
TIME...MOT...LOC 0410Z 317DEG 35KT 4452 9218
HAIL...1.00IN
WIND...70MPH
$$
CTG320
WWUS53 KMPX 290423
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1123 PM CDT Wed Jul 28 2021
MNC049-290432-
/O.CAN.KMPX.SV.W.0070.000000T0000Z-210729T0445Z/
Goodhue MN-
1123 PM CDT Wed Jul 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GOODHUE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
southeastern Minnesota...and west central Wisconsin.
LAT...LON 4458 9203 4456 9204 4441 9209 4445 9224
4450 9230 4452 9230 4456 9234 4456 9242
4461 9236 4460 9200
TIME...MOT...LOC 0422Z 317DEG 35KT 4443 9206
$$
WIC091-093-290445-
/O.CON.KMPX.SV.W.0070.000000T0000Z-210729T0445Z/
Pepin WI-Pierce WI-
1123 PM CDT Wed Jul 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR SOUTHWESTERN PEPIN AND SOUTHEASTERN PIERCE COUNTIES...
At 1122 PM CDT, a severe thunderstorm was located near Wabasha,
moving southeast at 40 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Pepin, Stockholm, Ella and Porcupine.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Twin Cities.
&&
LAT...LON 4458 9203 4456 9204 4441 9209 4445 9224
4450 9230 4452 9230 4456 9234 4456 9242
4461 9236 4460 9200
TIME...MOT...LOC 0422Z 317DEG 35KT 4443 9206
HAIL...1.00IN
WIND...70MPH
$$
CTG239
WWUS53 KMPX 290429
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1129 PM CDT Wed Jul 28 2021
WIC093-290439-
/O.CAN.KMPX.SV.W.0070.000000T0000Z-210729T0445Z/
Pierce WI-
1129 PM CDT Wed Jul 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PIERCE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
southeastern Minnesota...and west central Wisconsin.
LAT...LON 4456 9204 4441 9209 4445 9224 4450 9230
4452 9230 4454 9232 4454 9214
TIME...MOT...LOC 0429Z 317DEG 35KT 4438 9199
$$
WIC091-290445-
/O.CON.KMPX.SV.W.0070.000000T0000Z-210729T0445Z/
Pepin WI-
1129 PM CDT Wed Jul 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR SOUTHWESTERN PEPIN COUNTY...
At 1129 PM CDT, a severe thunderstorm was located over Wabasha,
moving southeast at 40 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Pepin, Stockholm and Ella.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Twin Cities.
&&
LAT...LON 4456 9204 4441 9209 4445 9224 4450 9230
4452 9230 4454 9232 4454 9214
TIME...MOT...LOC 0429Z 317DEG 35KT 4438 9199
HAIL...1.00IN
WIND...70MPH
$$
CTG507
WWUS53 KMPX 290437
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1137 PM CDT Wed Jul 28 2021
WIC091-290447-
/O.EXP.KMPX.SV.W.0070.000000T0000Z-210729T0445Z/
Pepin WI-
1137 PM CDT Wed Jul 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN PEPIN COUNTY WILL
EXPIRE AT 1145 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
southeastern Minnesota...and west central Wisconsin.
LAT...LON 4456 9204 4441 9209 4445 9224 4450 9230
4452 9230 4454 9232 4454 9214
TIME...MOT...LOC 0437Z 317DEG 35KT 4433 9193
$$
CTGThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 7:19 PM CDT | Special Weather Statement | MPX | Rusk | 26 min |
| Jul 28, 7:37 PM CDT | Severe Thunderstorm Warning | MPX | Rusk | 23 min |
| Jul 28, 7:43 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Polk, Rusk | 32 min |
| Jul 28, 8:01 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Rusk | 44 min |
| Jul 28, 8:09 PM CDT | Tornado Warning | MPX | Polk | 35 min |
| Jul 28, 8:46 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Rusk | 59 min |
| Jul 28, 8:55 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Polk | 50 min |
| Jul 28, 9:08 PM CDT | Tornado Warning | MPX | Chippewa | 37 min |
| Jul 28, 9:25 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Saint Croix | 65 min |
| Jul 28, 9:30 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 60 min |
| Jul 28, 9:36 PM CDT | Tornado Warning | MPX | Saint Croix | 24 min |
| Jul 28, 9:37 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 38 min |
| Jul 28, 9:55 PM CDT | Tornado Warning | MPX | Saint Croix | 35 min |
| Jul 28, 10:09 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin, Pierce, Saint Croix | 51 min |
| Jul 28, 10:18 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Eau Claire, Pepin | 42 min |
| Jul 28, 10:21 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 24 min |
| Jul 28, 10:36 PM CDT | Severe Thunderstorm Warning | MPX | Pepin | 39 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2021Severe Thunderstorm Warnings in Minnesota, 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.