Alert archive / Wisconsin / Tornado Warnings in 2024
Tornado Warning 35, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Aug 29, 2024, 6:21 PM CDT for Dunn County, Saint Croix County, Wisconsin. It was in force for 39 min. 5 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
- Aug 29, 2024, 6:21 PM CDT (23:21 UTC)
- Expired
- Aug 29, 2024, 7:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 0.75 in
Counties Dunn County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 122 km from the middle of the area, began a volume at 23:21 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 |
|---|---|---|---|
| Aug 29, 6:36 PM CDT | TSTM WND DMG | 2 S Wilson, WI | Large tree down blocking road just south of I-94 near Wilson. Time estimated from radar. |
| Aug 29, 6:37 PM CDT | TSTM WND DMG | 2 Ssw Wilson, WI | 2 semi-trailers detached and flipped at truck stop by Kwik Trip. Reported via phone. Time estimated via radar. |
| Aug 29, 6:37 PM CDT | TORNADO | 2 Sw Wilson, WI | Law enforcement reported numerous trees downed in several directions, and a street sign snapped in half near exit 28 along I-94. |
| Aug 29, 6:45 PM CDT | TSTM WND DMG | 3 Ese Knapp, WI | Relayed via Emergency Manager. Power lines down in the area near US 12 and CR K. Time estimated from radar. |
| Aug 29, 6:53 PM CDT | TSTM WND DMG | 2 Se Boyceville, WI | Debris on roadway near 370th St and 950th Ave southeast of Boyceville. Time estimated from radar. |
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 |
|---|---|---|---|
| Aug 29, 2:33 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.4 hours before the alert went out and 125 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
- 832 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 584 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 296 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.9
The text
As transmitted.
143
WFUS53 KMPX 292321
TORMPX
WIC033-109-300000-
/O.NEW.KMPX.TO.W.0035.240829T2321Z-240830T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
621 PM CDT Thu Aug 29 2024
The National Weather Service in the Twin Cities has issued a
* Tornado Warning for...
Northwestern Dunn County in west central Wisconsin...
Southeastern St. Croix County in west central Wisconsin...
* Until 700 PM CDT.
* At 620 PM CDT, a confirmed tornado was located near Baldwin, or 11
miles east of River Falls, moving northeast at 50 mph. Storm
chasers reported a rain wrapped tornado east of River Falls.
HAZARD...Damaging tornado.
SOURCE...Weather spotters confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* The tornado will be near...
Woodville around 625 PM CDT.
Glenwood City around 635 PM CDT.
Boyceville around 640 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Wilson, Connorsville, Downing, Hersey, and Emerald.
This includes Interstate 94 in Wisconsin between mile markers 25 and
35.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4502 9180 4487 9218 4503 9241 4521 9207
4521 9201
TIME...MOT...LOC 2320Z 228DEG 42KT 4489 9239
TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN
$$
RMD1 follow-up statement
086
WWUS53 KMPX 292340
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
640 PM CDT Thu Aug 29 2024
WIC033-109-300000-
/O.CON.KMPX.TO.W.0035.000000T0000Z-240830T0000Z/
Dunn WI-St. Croix WI-
640 PM CDT Thu Aug 29 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
NORTHWESTERN DUNN AND EAST CENTRAL ST. CROIX COUNTIES...
At 639 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Knapp, or 12 miles northwest of Menomonie, moving
northeast at 45 mph. This storm has a history of producing
tornadoes.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Boyceville and Knapp around 645 PM CDT.
Wheeler around 650 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Wilson, Downing, and Hersey.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4502 9180 4487 9218 4489 9220 4502 9225
4519 9198
TIME...MOT...LOC 2339Z 242DEG 39KT 4498 9213
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
RMDThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 4:53 PM CDT | Tornado Warning | MPX | Polk | 20 min |
| Aug 29, 4:58 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 32 min |
| Aug 29, 5:19 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Polk | 29 min |
| Aug 29, 5:57 PM CDT | Flash Flood Warning | MPX | Polk | 2 hr |
| Aug 29, 5:57 PM CDT | Tornado Warning | MPX | Pierce, Saint Croix | 33 min |
| Aug 29, 6:49 PM CDT | Tornado Warning | MPX | Chippewa, Dunn | 27 min |
Nearby
Tornado Warnings in Wisconsin, 2024Every tornado warning in 2024Tornadoes in 2024
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.