Baraboo Tornado Warning Today: Severe Storm Threat, Latest Updates and What Residents Need to Know
A tornado warning was issued for Baraboo, Wisconsin, and surrounding areas on August 18, 2026. Get the latest storm details, warning timing, safety guidance and what residents should do now.
A tornado warning was issued for Baraboo, Wisconsin, on Tuesday, August 18, 2026, as a severe thunderstorm capable of producing a tornado moved through parts of south-central Wisconsin. The warning covered portions of western Columbia County and northeastern Sauk County, including Baraboo, Wisconsin Dells, Lake Delton and nearby communities.
The National Weather Service warning indicated that radar had detected a severe thunderstorm capable of producing a tornado. The storm was moving east at roughly 45 mph when the warning was issued, creating a potentially dangerous situation for people in and around Baraboo.
Baraboo Tornado Warning: What Happened?
The severe weather developed as thunderstorms moved across Wisconsin on Tuesday afternoon. According to the National Weather Service forecast information for Baraboo, a tornado warning was in effect from approximately 4:48 p.m. until 5:30 p.m. CDT, while a broader severe thunderstorm watch remained in effect through 10 p.m.
The warning area included communities around Baraboo, Wisconsin Dells, Lake Delton and Lake Wisconsin, along with other locations in Sauk and Columbia counties. The storm was capable of producing a tornado and dangerous flying debris.
Residents were urged to take the warning seriously and seek shelter immediately rather than waiting to see whether a tornado became visible.
Where Was the Storm Moving?
The warning information indicated that the storm was near Reedsburg when the tornado warning was issued and was moving eastward at approximately 45 mph. Forecasters identified Baraboo, Wisconsin Dells and Lake Delton as communities that could be affected shortly afterward.
Other locations mentioned in the warning included:
- Baraboo
- Wisconsin Dells
- Lake Delton
- West Baraboo
- Lake Wisconsin
- Portage
- Rock Springs
- Okee
- North Freedom
- Merrimac
- Devils Lake State Park
The National Weather Service forecast page for Baraboo also listed the tornado warning alongside a severe thunderstorm warning and a severe thunderstorm watch, highlighting the broader severe-weather threat across the region.
What Does a Tornado Warning Mean?
A tornado warning is more urgent than a tornado watch.
A tornado watch means conditions are favorable for tornadoes and severe thunderstorms to develop. A tornado warning means a tornado has been detected or that weather radar indicates a storm is capable of producing one.
During the Baraboo warning, residents were advised to move immediately to a safe location because radar indicated rotation capable of producing a tornado.
What Should Baraboo Residents Do During a Tornado Warning?
The safest response is to take shelter immediately.
If you are inside a sturdy building:
- Go to a basement if one is available.
- Otherwise, move to a small interior room on the lowest floor.
- Stay away from windows and exterior walls.
- Cover your head and neck with your arms, blankets or other protective material.
- Keep monitoring official weather alerts.
If you are outside:
- Enter the nearest sturdy building immediately.
- Do not remain outside to watch the storm.
- Avoid trees, power lines and other objects that could fall or become airborne.
If you are driving:
- Do not attempt to outrun a tornado if dangerous weather is immediately nearby.
- If possible, get inside a substantial building.
- Avoid stopping beneath bridges or overpasses, where wind and debris can create additional hazards.
People staying in mobile homes should leave and seek a sturdy shelter whenever a tornado warning is issued, because mobile homes can be particularly vulnerable to extreme winds and flying debris.
Is There a Confirmed Tornado in Baraboo?
The warning indicated a storm capable of producing a tornado based on radar information. A tornado warning by itself does not necessarily mean that a tornado has touched down in Baraboo.
It is important to distinguish between a radar-indicated tornado threat and a confirmed tornado. Confirmation of an actual touchdown generally requires reliable storm reports, trained spotter observations or a subsequent National Weather Service damage survey.
As of the information available for this warning, readers should avoid treating unverified social-media reports or storm videos as confirmation of a tornado.
Could Baraboo See More Severe Weather?
Yes. The tornado warning occurred within a broader period of severe-weather activity across Wisconsin. The National Weather Service forecast page for Baraboo listed a severe thunderstorm watch through 10 p.m. CDT on August 18, meaning additional severe storms remained possible even after the tornado warning ended.
Residents should therefore continue monitoring official alerts for additional tornado warnings, severe thunderstorm warnings, damaging winds, hail and other hazards.
Baraboo and Sauk County Have a History of Severe Storms
Severe weather is not unusual in Sauk County. Historical county records document multiple tornadoes and damaging thunderstorms across the region.
The county’s hazard mitigation records show verified tornadoes dating back decades, along with numerous damaging thunderstorm-wind events affecting Baraboo and surrounding communities.
That history reinforces the importance of having a reliable severe-weather plan before storms arrive.
Where Can Residents Get Official Weather Updates?
During an active tornado threat, residents should prioritize information from the National Weather Service, local emergency management officials and local authorities.
Sauk County Emergency Management, Buildings, and Safety is also a local government resource in Baraboo for emergency-management information.
Residents should keep weather alerts enabled on their phones and avoid relying exclusively on social-media posts, particularly when information has not been verified.
Baraboo Tornado Warning FAQs
Was there a tornado warning for Baraboo today?
Yes. A tornado warning was issued on August 18, 2026, covering portions of the Baraboo area and surrounding communities. The National Weather Service information listed the warning from approximately 4:48 p.m. to 5:30 p.m. CDT.
Was a tornado confirmed in Baraboo?
The available warning information described a severe thunderstorm capable of producing a tornado based on radar indications. A tornado warning should not automatically be interpreted as confirmation that a tornado touched down.
What areas were included in the warning?
The warning included areas around Baraboo, Wisconsin Dells, Lake Delton and other communities in portions of Sauk and Columbia counties.
What should I do during a tornado warning?
Immediately move to a basement or an interior room on the lowest floor of a sturdy building. Stay away from windows and protect your head and neck from flying debris.
Is another severe storm possible after the warning?
Yes. A broader severe thunderstorm watch remained in effect for the Baraboo area through 10 p.m. CDT, so additional severe weather remained possible.
Where should I get the latest Baraboo weather alerts?
The National Weather Service and local emergency-management authorities should be treated as primary sources for official warnings and emergency instructions.
Bottom Line
The Baraboo tornado warning on August 18, 2026, represented a significant severe-weather threat for Baraboo and surrounding communities. Radar indicated a storm capable of producing a tornado, with the warning extending across parts of Sauk and Columbia counties and including communities such as Wisconsin Dells and Lake Delton.
Even after a tornado warning expires, residents should remain alert when a severe thunderstorm watch is still active. Weather conditions can change rapidly, and new warnings can be issued with little notice.
For anyone in Baraboo or nearby communities, the safest approach is simple: take every tornado warning seriously, seek sturdy shelter immediately and rely on official weather and emergency alerts for the latest information.