JACKSON, Miss. (AP) 鈥 Residents in several towns across Louisiana and Mississippi took cover as tornado sirens blared late Tuesday, and forecasters warned of the threat of strong twisters capable of tracking long distances on the ground as a severe weather outbreak erupted in the Deep South.
There were no immediate reports of severe damage or injuries as multiple tornado warnings were issued starting Tuesday afternoon and continuing into the nighttime hours as heavy thunderstorms rolled from eastern Texas to Georgia and as far north as Indiana. The National Weather Service that tornados hit the ground in Mississippi on Tuesday evening and Alabama was in the forecast path of the storms during the overnight hours.
More than 25 million people were at risk as the vast storm system. The national Storm Prediction Center said in its that affected cities could include New Orleans; Memphis and Nashville in Tennessee; and Birmingham, Alabama.
The NWS received reports of people trapped at a grocery store in Caledonia, Mississippi, just after 6 p.m. Lowndes County Emergency Management Agency Director Cindy Lawrence told the people inside the grocery store made it out safely. Lawrence also said a family trapped in a house about a mile (1.6 kilometers) from the store escaped.
Additional reports of property damage near Columbus were received by the NWS, according to Lance Perrilloux, a forecaster with the agency.
Heavy rain and hail as big as tennis balls were also possible as forecasters said the weather outbreak was expected to continue into Wednesday.
In west Alabama, a suspected tornado damaged numerous homes in Hale County, according to storm damage reports to the National Weather Service. About 29,000 customers were without power early Wednesday morning.
And in the west Alabama town of Eutaw, video from WBMA-TV from showed large sections of the roof missing from an apartment complex, where residents stood outside in the middle of the night.
鈥淲e鈥檝e got power lines, trees just all over the road,鈥 Eutaw Police Chief Tommy Johnson told WBRC-TV. 鈥淚n the morning when we get a little daylight, we鈥檙e going to do a door-by-door search to make sure no one is trapped inside or anything like that.鈥
So far, though, there were no reports of injuries. 鈥淲e haven鈥檛 got any reports of anyone hurt or anything,鈥 he said.
Craig Ceecee, a meteorologist at Mississippi State University, peered out at 鈥渋ncredibly black鈥 skies through the door of a tornado shelter in Starkville. He estimated that about 100 people had already arrived as a lightning storm persisted outside.
The Oktibbeha County Emergency Management agency is operating the shelter, about three miles (5 kilometers) from the university's campus. Ceecee said the dome-shaped multipurpose facility capable of withstanding 250 mph (400 kph) winds.
Before Tuesday鈥檚 storm, Ceecee built a database of Mississippi tornado shelters. He said there are several towns without any.
鈥淚鈥檝e had to go through events without (shelters), and trust me, they were scary,鈥 Ceecee said.
In the small town of Tchula, Mississippi, hail stones crashed against the windows of City Hall, as the mayor and other residents took cover during a tornado warning. 鈥淚t was hitting against the window, and you could tell that it was nice-sized balls of it," Mayor Ann Polk said after the storm passed.
It鈥檚 rare that federal forecasters warn of major tornadoes with the potential for carving damages across long distances, as they did in Tuesday's forecasts. Tornado watches covering much of Louisiana and Mississippi were announced due to 鈥渁 particularly dangerous situation,鈥 the NWS said.
鈥淪upercells are expected to develop this afternoon and track northeastward across much of northeast Louisiana and central Mississippi,鈥 the weather service said. 鈥淧arameters appear favorable for strong and long-tracked tornadoes this afternoon and early evening.鈥
The most intense wave of the storm was projected to move through Mississippi between 5 p.m. and 8 p.m., said Sarah Sickles, an NWS forecaster in Jackson, the state capital.
鈥淢ultiple rounds of severe thunderstorms 鈥 some capable of long-tracked tornadoes with EF3+ damage potential 鈥 will be possible this afternoon into tonight over parts of the lower Mississippi Valley region and Mid-South,鈥 the Norman, Oklahoma-based Storm Prediction Center said.
Tornadoes with an EF3 rating on the Enhanced Fujita tornado scale can produce wind gusts of up to 165 mph (266 kph).
All remaining classes at Mississippi State University鈥檚 main campus in Starkville switched to remote instruction Tuesday due to the weather. A Mississippi State women鈥檚 basketball game against the University of Louisiana-Monroe was to be played on campus, but the venue was closed to spectators. Alcorn State University and the University of Southern Mississippi Hattiesburg were closing early.
Some of Mississippi's public school systems also closed early.
Flood watches were issued for parts of southeast Mississippi and southwest Alabama, where 3 to 5 inches of rain (8 to 13 centimeters) could lead to flash flooding, the National Weather Service said.
Meanwhile, heavy snow was snarling traffic in some parts of the Upper Midwest.
Minneapolis-St. Paul International Airport tweeted Tuesday afternoon that its runways were closed due to fast snowfall rates and reduced visibility. Air traffic websites showed some inbound planes circling or diverting to other airports such as St. Cloud, Minnesota, and Fargo, North Dakota. The National Weather Service reported nearly 4 inches (10) of snow on the ground at the airport by noon.
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Jill Bleed in Little Rock, Arkansas; Michael Goldberg in Jackson, Mississippi; Sara Cline in Baton Rouge, Louisiana; and Steve Karnowski in Minneapolis contributed to this report.
The Associated Press