⚠️ Severe Thunderstorm Warning – Jefferson, WI – Wednesday, June 17, 2026

Severe Thunderstorm Warning issued June 17 at 7:23PM CDT until June 17 at 8:00PM CDT by NWS Milwaukee/Sullivan WI

Details

SVRMKX

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for…
Jefferson County in southeastern Wisconsin…

* Until 800 PM CDT.

* At 723 PM CDT, severe thunderstorms were located along a line
extending from near Lake Ripley to near Edgerton, moving east at 50
mph.

HAZARD…60 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Expect damage to roofs, siding, and trees.

* Locations impacted include…
Whitewater, Fort Atkinson, Jefferson, Lake Mills, Johnson Creek,
Palmyra, Cambridge, Lake Ripley, Lake Koshkonong, Rome, Hebron,
Sullivan, Busseyville, Helenville, and Nws Milwaukee/sullivan.

Instructions

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

A Tornado Watch remains in effect until 900 PM CDT for southeastern
Wisconsin.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.