4 southern states under tornado surveillance

Some areas are recovering from last week’s tornado damage.

Wednesday’s severe weather has triggered tornado clocks for parts of four southern states, with some areas still clearing damage from last week’s swarm of twisters.

Parts of Arkansas, North Louisiana, East Texas and southeastern Oklahoma were under a tornado observation issued by the National Weather Service, forecasting 75 miles per hour and inches of hail. The tornado warning is expected to remain in effect until Wednesday night.

A fire broke out in northeastern Oklahoma and people were told to evacuate.

A large storm system is pushing eastward from the Rocky Mountains and is expected to bring severe weather outbreaks to the south.

Severe weather is forecast for cities such as Dallas, Jackson, Memphis and Mobile.

A possible tornado landed in Springdale, Arkansas early Wednesday morning, causing extensive damage to an elementary school and injuring seven people, two seriously, according to the ABC-approved station KATV in Little Rock.

The Springdale School District said on its Facebook page that George Elementary School had been damaged by a possible tornado. The district primary school posted pictures showing the destroyed gymnasium and reported that the school kitchen and cafeteria were severely damaged.

Tornado Clock means the conditions are favorable for tornadoes and severe thunderstorms in the vicinity of the clock. People in the area have been advised to be alert for the weather threat and to be safe for the announcement of the local authorities.

The National Weather Service issued a tornado warning Tuesday night as the storm moved into Seminole County, Oklahoma, with gusts of up to 60 mph and hailstones the size of inches.

The weather service confirmed a tornado Tuesday night in East St. Joseph, Missouri. No injuries were immediately reported and the damage was being assessed on Wednesday.

Oklahoma emergency management officials were not only responding to the tornado warning on Wednesday, but also to the fire warning. Roger Mills County, Oklahoma has been evacuated due to the fire. Roger Mills Emergency Management officials on Tuesday told residents to evacuate their homes in the Durham and Dead Warrior Lake areas of northwestern Roger Mills County, where severe weather is expected on Wednesday.

Some areas where tornado clocks have been issued have been hit by more than 60 tornadoes in the past week that have blown southeast. Most of the tornadoes were reported in Texas, where a 73-year-old woman was killed and 10 were injured in Grayson County.

On March 22, two tornadoes hit New Orleans, causing extensive damage to St. Bernard’s parish, including the Ninth Ward, Chalmet, and the Arabian Peninsula. Authorities say one was killed in the Arabian Peninsula.

Severe weather this week also extended to the northeast, where a blizzard on Monday caused multiple vehicles to pile up on Interstate 81 in Pennsylvania. Pennsylvania State Police said Wednesday that six of the 39 commercial vehicles and 41 passenger vehicles in Schweilkill County were killed.

Interstate 81 reopened after midnight on Wednesday after an investigation and clearance.

Max Golembo and Whitney Lloyd of ABC News contributed to this report.

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