Alert archive / Wisconsin / Tornado Warnings in 2021
Tornado Warning 9, NWS Milwaukee, WI
NWS Milwaukee, WI issued this tornado warning at Aug 7, 2021, 5:26 PM CDT for Columbia County, Wisconsin. It was in force for 39 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
- Aug 7, 2021, 5:26 PM CDT (22:26 UTC)
- Expired
- Aug 7, 2021, 6:05 PM CDT
- In force
- 39 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
County Columbia County, WI
The radar
The Milwaukee radar (KMKX), 84 km from the middle of the area, began a volume at 22:31 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 7, 4:36 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.4 hours before the alert went out and 135 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
- 20 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 656 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
560
WFUS53 KMKX 072226
TORMKX
WIC021-072315-
/O.NEW.KMKX.TO.W.0009.210807T2226Z-210807T2315Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
526 PM CDT Sat Aug 7 2021
The National Weather Service in Milwaukee/Sullivan has issued a
* Tornado Warning for...
Eastern Columbia County in south central Wisconsin...
* Until 615 PM CDT.
* At 526 PM CDT, severe thunderstorms capable of producing both
tornadoes and extensive straight line wind damage were located near
Poynette, or near Lake Wisconsin, moving east at 40 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.
* Locations impacted include...
Portage, Lake Wisconsin, Poynette, Pardeeville, Randolph, Rio,
Cambria, Wyocena, Otsego, Friesland, Doylestown and Interstate
90/94 Interchange.
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.
This cluster 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 4363 8912 4363 8901 4341 8901 4336 8951
4352 8954 4364 8919 4364 8913
TIME...MOT...LOC 2226Z 257DEG 36KT 4342 8947
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
HANSEN3 follow-up statements
581
WWUS53 KMKX 072236 RRA
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
536 PM CDT Sat Aug 7 2021
WIC021-072315-
/O.CON.KMKX.TO.W.0009.000000T0000Z-210807T2315Z/
Columbia WI-
536 PM CDT Sat Aug 7 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR
NORTHEASTERN COLUMBIA COUNTY...
At 536 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Rio, or 9 miles southeast of Portage, moving east at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Poynette, Pardeeville, Randolph, Rio, Cambria, Wyocena, Otsego,
Friesland and Doylestown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4363 8912 4363 8901 4341 8901 4337 8943
4352 8943 4364 8919 4364 8913
TIME...MOT...LOC 2236Z 257DEG 36KT 4344 8933
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
HANSEN351
WWUS53 KMKX 072249
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
549 PM CDT Sat Aug 7 2021
WIC021-072315-
/O.CON.KMKX.TO.W.0009.000000T0000Z-210807T2315Z/
Columbia WI-
549 PM CDT Sat Aug 7 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR
NORTHEASTERN COLUMBIA COUNTY...
At 549 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Rio, or 11 miles northwest of Columbus, moving east at 50 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.
Locations impacted include...
Randolph, Rio, Cambria, Otsego, Friesland and Doylestown.
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.
This cluster 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 4363 8912 4363 8901 4341 8901 4339 8923
4352 8928 4364 8919 4364 8913
TIME...MOT...LOC 2249Z 256DEG 43KT 4347 8915
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
HANSEN286
WWUS53 KMKX 072305
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
605 PM CDT Sat Aug 7 2021
WIC021-072314-
/O.CAN.KMKX.TO.W.0009.000000T0000Z-210807T2315Z/
Columbia WI-
605 PM CDT Sat Aug 7 2021
...THE TORNADO WARNING FOR NORTHEASTERN COLUMBIA COUNTY IS
CANCELLED...
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, damaging winds remain possible and a Severe
Thunderstorm Warning remains in effect for the area.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
south central Wisconsin.
LAT...LON 4363 8912 4363 8901 4341 8901 4339 8923
4352 8928 4364 8919 4364 8913
TIME...MOT...LOC 2302Z 257DEG 36KT 4350 8894
$$
HANSENThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 7:34 PM CDT | Areal Flood Advisory | MKX | Milwaukee, Waukesha | 119 min |
| Aug 6, 7:38 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 37 min |
| Aug 6, 7:55 PM CDT | Special Marine Warning | MKX | 50 min | |
| Aug 6, 7:57 PM CDT | Special Weather Statement | MKX | Kenosha, Racine, Walworth | 63 min |
| Aug 6, 8:00 PM CDT | Areal Flood Advisory | MKX | Jefferson, Rock, Walworth | 2 hr |
| Aug 6, 8:14 PM CDT | Severe Thunderstorm Warning | MKX | Rock, Walworth | 31 min |
| Aug 6, 8:51 PM CDT | Special Weather Statement | MKX | Rock, Walworth | 54 min |
| Aug 6, 9:45 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 30 min |
| Aug 6, 10:15 PM CDT | Special Weather Statement | MKX | Dane | 30 min |
| Aug 7, 10:06 AM CDT | Special Weather Statement | MKX | Columbia, Marquette | 54 min |
| Aug 7, 11:01 AM CDT | Special Weather Statement | MKX | Columbia, Green Lake | 59 min |
| Aug 7, 11:47 AM CDT | Special Weather Statement | MKX | Dodge, Jefferson | 58 min |
| Aug 7, 12:32 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 43 min |
| Aug 7, 12:54 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Waukesha | 45 min |
| Aug 7, 1:48 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 42 min |
| Aug 7, 3:53 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 52 min |
| Aug 7, 4:33 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Iowa, Sauk | 57 min |
| Aug 7, 4:38 PM CDT | Tornado Warning | MKX | Iowa | 67 min |
| Aug 7, 5:17 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Green Lake, Marquette, Sauk | 58 min |
| Aug 7, 5:31 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 59 min |
| Aug 7, 5:33 PM CDT | Tornado Warning | MKX | Iowa | 57 min |
| Aug 7, 6:03 PM CDT | Special Weather Statement | MKX | Dodge, Fond du Lac, Green Lake | 42 min |
| Aug 7, 6:09 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 66 min |
| Aug 7, 6:25 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 50 min |
| Aug 7, 6:40 PM CDT | Special Weather Statement | MKX | Jefferson | 50 min |
Nearby
Tornado Warnings in Wisconsin, 2021Every tornado warning in 2021Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.