Alert archive / Wisconsin / Tornado Warnings in 2018
Tornado Warning 13, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Sep 20, 2018, 7:13 PM CDT for Dunn County, Pepin County, Pierce County, Wisconsin; Goodhue County, Minnesota. It was in force for 36 min. 9 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
- Sep 20, 2018, 7:13 PM CDT (00:13 UTC)
- Expired
- Sep 20, 2018, 7:49 PM CDT
- In force
- 36 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Goodhue County, MN, Dunn County, WI, Pepin County, WI, Pierce County, WI
The radar
The Minneapolis radar (KMPX), 106 km from the middle of the area, began a volume at 00:16 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 |
|---|---|---|---|
| Sep 20, 7:15 PM CDT | TSTM WND DMG | Red Wing, MN | A FEW TREES AND POWER LINES DOWN. |
| Sep 20, 7:25 PM CDT | TSTM WND DMG | Ellsworth, WI | FEW TREES AND POWER LINES DOWN. TIME APPROXIMATE. |
| Sep 20, 7:26 PM CDT | TORNADO | 1 E Ellsworth, WI | EF0 TORNADO TRACKED 1.7 MILES NORTHEAST. |
| Sep 20, 7:28 PM CDT | TSTM WND DMG | 2 N Stockholm, WI | CORRECTS TIME - TSTM WND DMG REPORT FROM 2 N STOCKHOLM. REPORT VIA NWSCHAT OF TREE DOWN OVER HWY 35 SOUTH OF STOCKHOLM. ALSO, A DOWNED POWER LINE STARTED A FIRE IN A WOODS. |
| Sep 20, 7:29 PM CDT | TSTM WND DMG | Lake City, MN | TREES BLOWN DOWN IN TOWN |
| Sep 20, 7:29 PM CDT | TSTM WND DMG | Lake City, MN | TREES BLOWN DOWN IN TOWN. |
| Sep 20, 7:30 PM CDT | TSTM WND DMG | Stockholm, WI | FEW TREES AND POWER LINES DOWN. |
| Sep 20, 7:34 PM CDT | TSTM WND DMG | Spring Valley, WI | CALLED IN TO REPORT DAMAGE TO SPRING VALLEY HIGH SCHOOL. NO PHOTOS PROVIDED. |
| Sep 20, 7:57 PM CDT | TSTM WND DMG | 2 N Stockholm, WI | REPORT VIA NWSCHAT OF TREE DOWN OVER HWY 35 SOUTH OF STOCKHOLM. ALSO, A DOWNED POWER LINE STARTED A FIRE IN A WOODS. |
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 |
|---|---|---|---|
| Sep 20, 6:23 PM CDT | Tornado Watch | SPC | 5 hr |
| Sep 20, 3:33 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.2 hours before the alert went out and 331 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
- 3 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 340 m²/s²
- 0-3 km storm-relative helicity
- 454 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted.
771
WFUS53 KMPX 210013
TORMPX
MNC049-WIC033-091-093-210100-
/O.NEW.KMPX.TO.W.0013.180921T0013Z-180921T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
713 PM CDT THU SEP 20 2018
The National Weather Service in The Twin Cities has issued a
* Tornado Warning for...
Northeastern Goodhue County in southeastern Minnesota...
Pepin County in west central Wisconsin...
Pierce County in west central Wisconsin...
Southwestern Dunn County in west central Wisconsin...
* Until 800 PM CDT.
* At 713 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Welch, or 8 miles west of Red Wing, moving east at
65 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation. These storms have produced
widespread wind damage with embedded tornadoes.
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...
Ellsworth and Bay City around 725 PM CDT.
Plum City around 735 PM CDT.
Elmwood around 740 PM CDT.
Eau Galle around 745 PM CDT.
Other locations impacted by this tornadic thunderstorm include El
Paso, Wacouta, Central Point, Martel, Esdaile, Beldenville, Arkansaw,
Weston, Porcupine and Red Wing Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4460 9200 4458 9203 4441 9209 4445 9224
4445 9243 4441 9243 4457 9254 4465 9263
4474 9280 4486 9245 4486 9208 4460 9187
TIME...MOT...LOC 0013Z 248DEG 59KT 4460 9271
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
BORGHOFF3 follow-up statements
968
WWUS53 KMPX 210028
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
728 PM CDT THU SEP 20 2018
MNC049-WIC033-091-093-210100-
/O.CON.KMPX.TO.W.0013.000000T0000Z-180921T0100Z/
Goodhue MN-Pepin WI-Pierce WI-Dunn WI-
728 PM CDT THU SEP 20 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR EAST
CENTRAL GOODHUE...PEPIN...PIERCE AND SOUTHWESTERN DUNN COUNTIES...
At 727 PM CDT, a confirmed tornado was located near Ellsworth, or 12
miles northeast of Red Wing, moving northeast at 65 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Elmwood around 740 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Beldenville, Arkansaw, Weston, El Paso, Porcupine, Wacouta, Frontenac
State Park, Central Point, Martel and Esdaile.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4460 9200 4458 9203 4441 9209 4445 9224
4445 9243 4441 9243 4461 9244 4467 9253
4481 9260 4486 9245 4486 9208 4460 9187
TIME...MOT...LOC 0027Z 246DEG 58KT 4470 9241
TORNADO...OBSERVED
HAIL...<.75IN
$$
BORGHOFF514
WWUS53 KMPX 210039
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
739 PM CDT THU SEP 20 2018
MNC049-210049-
/O.CAN.KMPX.TO.W.0013.000000T0000Z-180921T0100Z/
Goodhue MN-
739 PM CDT THU SEP 20 2018
...THE TORNADO WARNING FOR EAST CENTRAL GOODHUE COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until midnight CDT for west central
Wisconsin.
LAT...LON 4444 9208 4442 9213 4444 9222 4485 9238
4486 9236 4486 9208 4460 9187 4460 9200
4458 9203
TIME...MOT...LOC 0039Z 239DEG 56KT 4482 9226 4456 9211
$$
WIC033-091-093-210100-
/O.CON.KMPX.TO.W.0013.000000T0000Z-180921T0100Z/
Pepin WI-Pierce WI-Dunn WI-
739 PM CDT THU SEP 20 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR PEPIN...
EASTERN PIERCE AND SOUTHWESTERN DUNN COUNTIES...
At 739 PM CDT, severe thunderstorms capable of producing tornadoes
were located along a line extending from near El Paso to Porcupine,
moving northeast at 65 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
These dangerous storms will be near...
Durand around 745 PM CDT.
Eau Galle around 750 PM CDT.
Other locations impacted by these tornadic storms include Arkansaw,
Weston, El Paso, Ella and Porcupine.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4444 9208 4442 9213 4444 9222 4485 9238
4486 9236 4486 9208 4460 9187 4460 9200
4458 9203
TIME...MOT...LOC 0039Z 239DEG 56KT 4482 9226 4456 9211
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
BORGHOFF262
WWUS53 KMPX 210049
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
749 PM CDT THU SEP 20 2018
WIC033-091-093-210058-
/O.CAN.KMPX.TO.W.0013.000000T0000Z-180921T0100Z/
Pepin WI-Pierce WI-Dunn WI-
749 PM CDT THU SEP 20 2018
...THE TORNADO WARNING FOR PEPIN...EASTERN PIERCE AND SOUTHWESTERN
DUNN COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been cancelled.
A Tornado Watch remains in effect until midnight CDT for west central
Wisconsin.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
The Twin Cities.
LAT...LON 4444 9208 4442 9213 4444 9222 4485 9238
4486 9236 4486 9208 4460 9187 4460 9200
4458 9203
TIME...MOT...LOC 0048Z 248DEG 59KT 4488 9207 4462 9192
$$
BORGHOFFThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 7:05 PM CDT | Special Weather Statement | MPX | Barron, Polk | 3 hr |
| Sep 20, 7:37 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Dunn, Eau Claire, Pepin, Saint Croix | 38 min |
| Sep 20, 8:08 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 37 min |
| Sep 21, 8:21 AM CDT | River Flood Warning | MPX | Brown | 6 days |
Nearby
Tornado Warnings in Wisconsin, 2018Tornado Warnings in Minnesota, 2018Every tornado warning in 2018Tornadoes in 2018
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.