Alert archive / Wisconsin / Tornado Warnings in 2020
Tornado Warning 26, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Jul 21, 2020, 7:03 PM CDT for Chippewa County, Wisconsin. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2020, 7:03 PM CDT (00:03 UTC)
- Expired
- Jul 21, 2020, 7:45 PM CDT
- In force
- 42 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Chippewa County, WI
The radar
The La Crosse radar (KARX), 137 km from the middle of the area, began a volume at 00:05 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.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.1 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
- 8 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1146 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
638
WFUS53 KMPX 220003
TORMPX
WIC017-220045-
/O.NEW.KMPX.TO.W.0026.200722T0003Z-200722T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
703 PM CDT Tue Jul 21 2020
The National Weather Service in The Twin Cities has issued a
* Tornado Warning for...
Southwestern Chippewa County in west central Wisconsin...
* Until 745 PM CDT.
* At 702 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Colfax, or 17 miles northeast of Menomonie, moving
southeast at 20 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.
* This dangerous storm will be near...
Bloomer around 715 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Eagleton and Tilden.
This includes U.S. Highway 53 between mile markers 101 and 110.
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 4492 9146 4502 9166 4511 9165 4512 9164
4508 9135
TIME...MOT...LOC 0002Z 299DEG 18KT 4507 9164
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
CEO2 follow-up statements
747
WWUS53 KMPX 220036
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
736 PM CDT Tue Jul 21 2020
WIC017-220045-
/O.CON.KMPX.TO.W.0026.000000T0000Z-200722T0045Z/
Chippewa WI-
736 PM CDT Tue Jul 21 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHWESTERN CHIPPEWA COUNTY...
At 736 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Chippewa Falls, or 9 miles north of Eau Claire,
moving southeast at 20 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
southwestern Chippewa County, including the following locations...
Tilden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4492 9146 4499 9159 4505 9151 4505 9137
TIME...MOT...LOC 0036Z 298DEG 18KT 4500 9145
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
JRB062
WWUS53 KMPX 220040
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
740 PM CDT Tue Jul 21 2020
WIC017-220050-
/O.EXP.KMPX.TO.W.0026.000000T0000Z-200722T0045Z/
Chippewa WI-
740 PM CDT Tue Jul 21 2020
...THE TORNADO WARNING FOR SOUTHWESTERN CHIPPEWA COUNTY WILL EXPIRE
AT 745 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.
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 4492 9146 4499 9159 4505 9151 4505 9137
TIME...MOT...LOC 0040Z 299DEG 18KT 4500 9144
$$
JRBThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 7:10 PM CDT | Special Weather Statement | MPX | Rusk | 65 min |
| Jul 21, 7:18 PM CDT | Special Weather Statement | MPX | Dunn | 57 min |
| Jul 21, 7:34 PM CDT | Special Weather Statement | MPX | Chippewa | 56 min |
| Jul 21, 7:47 PM CDT | Special Weather Statement | MPX | Chippewa | 43 min |
| Jul 21, 8:19 PM CDT | Tornado Warning | MPX | Chippewa, Eau Claire | 41 min |
| Jul 21, 8:30 PM CDT | Special Weather Statement | MPX | Chippewa, Eau Claire | 60 min |
| Jul 21, 8:52 PM CDT | Tornado Warning | MPX | Chippewa, Eau Claire | 53 min |
Nearby
Tornado Warnings in Wisconsin, 2020Every tornado warning in 2020Tornadoes in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.