PRAIRIE DU CHIEN, Wis. -

The National Weather Service (NWS) representatives met with Richland County Emergency Management to assess the damage after a severe thunderstorm swept through the area Wednesday night.

Emergency Management says the NWS is now analyzing radar data and aerial photos to determine whether the damage was caused by straight line winds, down burtst of wind, or an actual tornado.

Richland County Emergency Management says about 30 properties in the county have reported damage. If you live in the area and would like to report property damage from the storm, you're asked to contact Richland County Emergency Management at (608) 647-8187.

Severe storms with high winds also knocked over campers and uprooted trees at a campground near Prairie du Chien in Crawford County.

Authorities say no one was injured when a possible tornado touched down at the Jelly Stone Campground in the town of Bagley in Grant County Wednesday night.

Fire Chief Fred White tells our sister station WISC in Madison several trailers were on their sides, and downed power lines left about half the town without power.

Emergency management officials say a tornado caused the damage, but the National Weather Service has not confirmed that. Grant County authorities say witnesses reported seeing a tornado form, then disappear, within 20 to 30 seconds in the campground area.

There is also storm damage in Crawford County. The Prairie du Chien Police Department says people needing clean-up help can call (608)326-0267 Thursday between 8 a.m. and 4 p.m.

"We sincerely thank the citizens of Prairie du Chien for their cooperation in helping their neighbors," says Chief of Police Chad Abram.  "Without good citizenship our job would be much more difficult to complete in a safe and orderly manner."

Richland County Emergency Management officials say several businesses on Highway 14 in Richland Center were seriously damaged by the storm.  Wind reached a sustained speed of 60 MPH in the southern part of that county Wednesday night.

Alliant Energy tells News 8 about 3,000 people in Crawford and Richland Counties lost power in the storm.  As of 7 a.m. Thursday, about 400 people are still without electricity.  Power should be fully restored in affected areas by the end of the day.

In Trempealeau County, there are reports of scattered trees down and power outages.

Photos from News 8 viewers in southern Vernon County show downed trees.  If you have storm photos, please share them with us by uploading them here.