Alert archive / Wisconsin / Tornado Warnings in 2023
Tornado Warning 8, NWS Milwaukee, WI
NWS Milwaukee, WI issued this tornado warning at Jul 13, 2023, 6:43 PM CDT for Rock County, Walworth County, Wisconsin. It was in force for 32 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 13, 2023, 6:43 PM CDT (23:43 UTC)
- Expired
- Jul 13, 2023, 7:15 PM CDT
- In force
- 32 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Rock County, WI, Walworth County, WI
The radar
The Milwaukee radar (KMKX), 49 km from the middle of the area, began a volume at 23:42 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
Davenport, (KDVN), launched 12:00Z, 11.7 hours before the alert went out and 178 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
- 5 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 884 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
577
WFUS53 KMKX 132343
TORMKX
WIC105-127-140015-
/O.NEW.KMKX.TO.W.0008.230713T2343Z-230714T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
643 PM CDT Thu Jul 13 2023
The National Weather Service in Milwaukee/Sullivan has issued a
* Tornado Warning for...
Southwestern Walworth County in southeastern Wisconsin...
Eastern Rock County in south central Wisconsin...
* Until 715 PM CDT.
* At 643 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Darien, or 8 miles southwest of Delavan, moving
southeast at 20 mph.
HAZARD...Tornado.
SOURCE...Weather spotters reported funnel cloud north of Sharon.
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...
Walworth, Sharon, Darien, and Allens Grove.
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 4257 8883 4262 8875 4250 8855 4249 8877
TIME...MOT...LOC 2343Z 317DEG 17KT 4256 8876
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
PATTERSON1 follow-up statement
268
WWUS53 KMKX 132358
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
658 PM CDT Thu Jul 13 2023
WIC105-140007-
/O.CAN.KMKX.TO.W.0008.000000T0000Z-230714T0015Z/
Rock WI-
658 PM CDT Thu Jul 13 2023
...THE TORNADO WARNING FOR EASTERN ROCK COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
LAT...LON 4250 8878 4254 8878 4258 8870 4250 8855
4249 8876 4249 8877
TIME...MOT...LOC 2357Z 317DEG 17KT 4251 8870
$$
WIC127-140015-
/O.CON.KMKX.TO.W.0008.000000T0000Z-230714T0015Z/
Walworth WI-
658 PM CDT Thu Jul 13 2023
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
SOUTHWESTERN WALWORTH COUNTY...
At 657 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Sharon, or 7 miles northwest of Harvard, moving
southeast at 20 mph.
HAZARD...Tornado.
SOURCE...Weather spotters reported a funnel cloud near Sharon.
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...
Walworth and Sharon.
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 4250 8878 4254 8878 4258 8870 4250 8855
4249 8876 4249 8877
TIME...MOT...LOC 2357Z 317DEG 17KT 4251 8870
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
PATTERSONThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 8:21 PM CDT | Small Craft Advisory | MKX | 7 hr | |
| Jul 12, 8:25 PM CDT | Beach Hazards Statement | MKX | Kenosha, Milwaukee, Racine | 7 hr |
| Jul 13, 3:48 PM CDT | Special Weather Statement | MKX | Sauk | 42 min |
| Jul 13, 5:38 PM CDT | Special Weather Statement | MKX | Rock | 37 min |
| Jul 13, 6:06 PM CDT | Special Weather Statement | MKX | Walworth | 39 min |
| Jul 13, 6:18 PM CDT | Tornado Warning | MKX | Rock, Walworth | 27 min |
Nearby
Tornado Warnings in Wisconsin, 2023Every tornado warning in 2023Tornadoes in 2023
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.