Alert archive / Wisconsin / Tornado Warnings in 2026
Tornado Warning 2, NWS Milwaukee, WI
NWS Milwaukee, WI issued this tornado warning at Apr 2, 2026, 6:07 PM CDT for Rock County, Wisconsin. It was in force for 38 min. 1 report 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
- Apr 2, 2026, 6:07 PM CDT (23:07 UTC)
- Expired
- Apr 2, 2026, 6:45 PM CDT
- In force
- 38 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Rock County, WI
The radar
The Milwaukee radar (KMKX), 48 km from the middle of the area, began a volume at 23:11 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 |
|---|---|---|---|
| Apr 2, 6:27 PM CDT | HAIL 0.75 | 2 E Janesville, WI |
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 |
|---|---|---|---|
| Apr 2, 1:43 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.1 hours before the alert went out and 282 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
- 19 J/kg
- Mixed-layer CIN
- -278 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 453 m²/s²
- 0-3 km storm-relative helicity
- 450 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
529
WFUS53 KMKX 022307
TORMKX
WIC105-022345-
/O.NEW.KMKX.TO.W.0002.260402T2307Z-260402T2345Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
607 PM CDT Thu Apr 2 2026
The National Weather Service in Milwaukee/Sullivan has issued a
* Tornado Warning for...
Eastern Rock County in south central Wisconsin...
* Until 645 PM CDT.
* At 607 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Beloit, moving northeast 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.
* This dangerous storm will be near...
Janesville around 610 PM CDT.
Other locations impacted by this tornadic thunderstorm include Lima
Center, Johnstown Center, and Afton.
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 4255 8919 4284 8880 4284 8877 4273 8878
4252 8914
TIME...MOT...LOC 2307Z 216DEG 33KT 4260 8911
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
PATTERSON1 follow-up statement
358
WWUS53 KMKX 022332
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
632 PM CDT Thu Apr 2 2026
WIC105-022345-
/O.CON.KMKX.TO.W.0002.000000T0000Z-260402T2345Z/
Rock WI-
632 PM CDT Thu Apr 2 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN ROCK COUNTY...
At 631 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Milton, moving northeast at 40 mph.
HAZARD...Tornado.
SOURCE...Weather spotters reported a funnel cloud.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
northeastern Rock County, including the following locations... Lima
Center and Johnstown Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4284 8880 4284 8877 4273 8878 4264 8894
4267 8903
TIME...MOT...LOC 2331Z 216DEG 33KT 4278 8893
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
PATTERSONThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 11:46 AM CDT | River Flood Watch | MKX | Kenosha | 24 hr |
| Apr 2, 12:52 PM CDT | Marine Dense Fog Advisory | MKX | 6 hr | |
| Apr 2, 5:48 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 57 min |
| Apr 2, 5:58 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 47 min |
| Apr 2, 6:03 PM CDT | Tornado Warning | MKX | Jefferson, Rock | 42 min |
| Apr 2, 6:15 PM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 30 min |
| Apr 2, 6:35 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Iowa | 40 min |
| Apr 2, 6:39 PM CDT | Tornado Warning | MKX | Jefferson, Rock, Walworth | 30 min |
| Apr 2, 6:43 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Jefferson, Rock | 32 min |
| Apr 2, 6:58 PM CDT | Tornado Warning | MKX | Rock | 23 min |
Nearby
Tornado Warnings in Wisconsin, 2026Every tornado warning in 2026Tornadoes in 2026
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.