HARVEYVILLE, Kan. - As the sun comes up in Harveyville, Kan., Wednesday, the damage left behind by an apparent tornado that injured a dozen people a day earlier becomes more evident.
The apparent tornado struck Harveyville Tuesday evening, part of a powerful storm system that pounded parts of central Kansas.
The Wabaunsee County Sheriff said between 40 and 60 percent of the town, about 90 miles southwest of Kansas City, was severely damaged.
An emergency official there says tornado sirens never sounded Tuesday night, because the National Weather Service never issued a tornado warning.
Kansas Gov. Sam Brownback declared a state of emergency late Tuesday that covers Wabaunsee County, southwest of Topeka.
A news release from the Kansas Incident Team Management System said four people were hospitalized following the storm in Harveyville. Three were listed as critical and the fourth non-critical, the release said. Eight others were treated by emergency crews but not hospitalized.
"It is quite hectic," said Bill Beasley of the American Medical Response for Shawnee and Wabaunsee counties, who said nine ambulances were dispatched to the scene.
The American Red Cross is assisting and officials have set up a shelter at a local high school.
Service trucks from area fire stations and emergency management departments were dispatched to Harveyville.
Earlier, the National Weather Service reported brief tornado touchdowns southwest of Hutchinson.
Elsewhere in central Kansas, trained spotters and law enforcement reported hail the size of golf balls and winds estimated at 70 mph Tuesday night north of Hillsboro in Marion County.
Farther east, Pittsburg State University, in the southeastern corner of the state, canceled classes Wednesday.
A school spokesperson said the main problem is a power outage across the campus.
The storm damaged at least three buildings on the east side of the campus.
Strong winds peeled back part of the roof on the Weede Physical Education Building, according to the spokesperson.
Winds also caused damage to the Kansas Technology Center and the student recreation center.
Teams are still walking around the campus to check on damage.
About 7,300 students attend the university.
CNN News and The Associated Press Contributed to this Report