(By Bonny Apunyu)   

At least one person was killed and others are still unaccounted for as several tornadoes ripped through the northern part of the U.S. state of Texas over the weekend, Associated Press reported.

Eastland County Judge Rex Fields reportedly said one of the tornadoes on Saturday shattered homes in a rural area south of Cisco, a town about 100 miles west of Fort Worth.

"The homes that I've seen, there are just maybe one or two walls standing," Fields, who also serves as the county's emergency services coordinator, told The Associated Press.

AP reported Fields as saying one person was killed and there were likely other injuries. Authorities were going house to house to assess the damage, but that proved difficult amid the heavy rainfall.

However, the extent of injuries or fatalities also wasn't immediately clear in the town of Burkburnett, about 15 miles north of Wichita Falls, where a second tornado touched down, according to AP.

Elsewhere in the U.S., storms brought heavy rain and quarter-sized hail to parts of southwest Oklahoma on Saturday afternoon, but meteorologists said a tornado threat there had diminished as the hours wore on Sunday.

Parts of western Kansas also were hit by severe weather ripe for tornadoes. In Kansas City, in the eastern part of the state, a band of rain halted NASCAR's Sprint Cup race at Kansas Speedway.

Two weather systems stretching from the Carolinas to California produced an unseasonably early tropical storm in the Atlantic and a late-season snowstorm in the Rocky Mountains. Tropical Storm Ana was reported early Sunday to be just off the coast of South Carolina, weakening with top sustained winds of 45 mph. (AP)