Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 43, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2021, 8:34 PM CDT for Dunn County, Eau Claire County, Pepin County, Wisconsin. It was in force for 56 min. 6 reports 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
- Jun 17, 2021, 8:34 PM CDT (01:34 UTC)
- Expired
- Jun 17, 2021, 9:30 PM CDT
- In force
- 56 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Dunn County, WI, Eau Claire County, WI, Pepin County, WI
The radar
The La Crosse radar (KARX), 102 km from the middle of the area, began a volume at 01:37 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 |
|---|---|---|---|
| Jun 17, 8:50 PM CDT | HAIL 0.75 | 8 S Elk Mound, WI | |
| Jun 17, 9:01 PM CDT | HAIL 1 | 2 Sw Altoona, WI | |
| Jun 17, 9:02 PM CDT | HAIL 1 | 2 Sw Altoona, WI | TIME ESTIMATED VIA RADAR. |
| Jun 17, 9:03 PM CDT | HAIL 0.7 | 2 Sse Eau Claire, WI | |
| Jun 17, 9:04 PM CDT | HAIL 0.75 | 2 Sse Altoona, WI | |
| Jun 17, 9:05 PM CDT | HAIL 0.88 | 2 S Altoona, WI | AT OAKWOOD MALL. |
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 |
|---|---|---|---|
| Jun 17, 7:22 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.6 hours before the alert went out and 164 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
- 61 J/kg
- Mixed-layer CIN
- -387 J/kg
- Mixed-layer LCL
- 1555 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
651
WUUS53 KMPX 180134
SVRMPX
WIC033-035-091-180230-
/O.NEW.KMPX.SV.W.0043.210618T0134Z-210618T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
834 PM CDT Thu Jun 17 2021
The National Weather Service in the Twin Cities has issued a
* Severe Thunderstorm Warning for...
Northeastern Pepin County in west central Wisconsin...
Southeastern Dunn County in west central Wisconsin...
Eau Claire County in west central Wisconsin...
* Until 930 PM CDT.
* At 834 PM CDT, severe thunderstorms were located along a line
extending from 8 miles northeast of Eau Galle to near Durand,
moving east at 50 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Altoona and Lake Hallie around 855 PM CDT.
Eau Claire around 900 PM CDT.
Fall Creek around 910 PM CDT.
Augusta around 920 PM CDT.
Fairchild around 930 PM CDT.
Other locations impacted by these severe thunderstorms include
Caryville, Foster, Brackett, Lake Eau Claire County Park, Rock Falls,
Ludington, Allen and Seymour.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4459 9172 4460 9192 4483 9183 4486 9165
4486 9092 4460 9093
TIME...MOT...LOC 0134Z 270DEG 44KT 4476 9186 4458 9202
HAIL...1.50IN
WIND...60MPH
$$
Borghoff3 follow-up statements
270
WWUS53 KMPX 180151
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
851 PM CDT Thu Jun 17 2021
WIC033-035-091-180230-
/O.CON.KMPX.SV.W.0043.000000T0000Z-210618T0230Z/
Pepin WI-Dunn WI-Eau Claire WI-
851 PM CDT Thu Jun 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR NORTHEASTERN PEPIN...SOUTHEASTERN DUNN AND EAU CLAIRE COUNTIES...
At 851 PM CDT, severe thunderstorms were located along a line
extending from 8 miles south of Elk Mound to 7 miles southeast of
Durand, moving east at 50 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
These severe storms will be near...
Altoona around 905 PM CDT.
Eau Claire around 910 PM CDT.
Fall Creek around 915 PM CDT.
Augusta around 925 PM CDT.
Fairchild around 945 PM CDT.
Other locations impacted by these severe thunderstorms include
Caryville, Foster, Brackett, Lake Eau Claire County Park, Rock Falls,
Ludington, Allen and Seymour.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4459 9172 4460 9192 4483 9183 4486 9165
4486 9092 4460 9093
TIME...MOT...LOC 0151Z 270DEG 44KT 4476 9166 4458 9183
HAIL...1.25IN
WIND...60MPH
$$
Borghoff846
WWUS53 KMPX 180203
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
903 PM CDT Thu Jun 17 2021
WIC033-091-180213-
/O.CAN.KMPX.SV.W.0043.000000T0000Z-210618T0230Z/
Pepin WI-Dunn WI-
903 PM CDT Thu Jun 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PEPIN AND
SOUTHEASTERN DUNN COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
west central Wisconsin.
LAT...LON 4460 9165 4486 9165 4486 9092 4460 9093
TIME...MOT...LOC 0203Z 267DEG 45KT 4478 9138 4460 9155
$$
WIC035-180230-
/O.CON.KMPX.SV.W.0043.000000T0000Z-210618T0230Z/
Eau Claire WI-
903 PM CDT Thu Jun 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR EAU CLAIRE COUNTY...
At 903 PM CDT, severe thunderstorms were located along a line
extending from near Altoona to 6 miles east of Mondovi, moving east
at 50 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
These severe storms will be near...
Fall Creek around 910 PM CDT.
Augusta around 930 PM CDT.
Fairchild around 940 PM CDT.
Other locations impacted by these severe thunderstorms include
Foster, Brackett, Lake Eau Claire County Park, Ludington, Allen and
Seymour.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4460 9165 4486 9165 4486 9092 4460 9093
TIME...MOT...LOC 0203Z 267DEG 45KT 4478 9138 4460 9155
HAIL...1.25IN
WIND...60MPH
$$
Borghoff412
WWUS53 KMPX 180221
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
921 PM CDT Thu Jun 17 2021
WIC035-180230-
/O.EXP.KMPX.SV.W.0043.000000T0000Z-210618T0230Z/
Eau Claire WI-
921 PM CDT Thu Jun 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAU CLAIRE COUNTY WILL EXPIRE
AT 930 PM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
west central Wisconsin.
LAT...LON 4460 9165 4486 9165 4486 9092 4460 9093
TIME...MOT...LOC 0220Z 270DEG 44KT 4478 9109 4460 9126
$$
BorghoffThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 7:50 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin, Pierce | 55 min |
| Jun 17, 8:28 PM CDT | Severe Thunderstorm Warning | MPX | Pepin | 34 min |
| Jun 18, 3:21 AM CDT | Red Flag Warning | MPX | Barron, Polk, Rusk, Saint Croix | 16 hr |
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.