JACKSON, Miss. – Just days after tornadoes ripped across parts of the South, a deadly and “particularly dangerous” tornado watch affecting millions of people was underway in the Gulf states through Saturday night.

One person died Saturday as a result of multiple tornadoes that slammed Texas earlier in the day, Manvel Mayor Dan Davis said in a post on X.

The victim was killed in Brazoria County, located less than an hour outside of Houston, where multiple homes were destroyed and four other people were injured, according to KHOU.

Three other tornadoes were reported in Waller, Montgomery and Chambers counties in Texas, the outlet reported. 

Drone video showed several buildings suffering damage in Porter Heights, north of Houston.

Spotters reported multiple mobile homes were hit, and the twister caused significant damage to a brick home and the East Montgomery Fire Department building, according to the National Weather Service office in Houston.

An image taken near the Houston suburb of Katy showed a funnel hovering above the ground.

Spotters reported damage to a mobile home park near Noel Lane.

Other reports of tornadoes came in near the towns of Cypress and Liverpool. Multiple homes suffered damage between Alvin and Liverpool, NWS Houston reported.

A tornado was also reported Saturday morning near Oretta, Louisiana, where officials said the twister was captured on video.

Forecasters urged millions from Texas to the Carolinas and south to Florida to keep their guard up this weekend.

Severe thunderstorm warnings, tornado warnings and watches were issued for parts of at least five states.

A watch means that conditions are favorable for the development of severe weather and people should prepare to take action if a warning is issued.

A “Particularly Dangerous Situation” tornado watch with wind gusts up to 80 mph was issued by the National Weather Service, affecting nearly 2.4 million people from eastern Texas to Louisiana and Mississippi through 9 p.m. CT.

The “particularly dangerous” designation is given to a tornado watch when the Storm Prediction Center has “a high confidence forecast of multiple intense tornadoes.” 

A Level 4 severe weather zone has been outlined for Saturday and includes parts of Alabama, Arkansas, Louisiana, Mississippi and Texas. A Level 3 zone stretches from Texas to Florida.

“This just has a classic tornado day feel to it,” FOX Weather Storm Tracker Brandon Copic said from southern Mississippi early Saturday afternoon. “You can just feel it in the air with how the environment is. And it was definitely an eerie feeling this morning and the amount of sunshine we’ve seen – the breaks in the clouds are definitely very concerning.”

Large hail, damaging wind and tornadoes are likely with any severe storms that develop from late Saturday morning into Saturday night. Some strong tornadoes, meaning EF-2 or higher, are also possible. However, forecasters are concerned that some tornadoes could be even stronger.

“These discreet supercells out ahead of this line that will be developing across East Texas into the afternoon, that’s going to pose the risk for strong tornadoes, and not just EF-2,” said FOX Weather Meteorologist Jane Minar. “We could see … several long-track, EF-3 or greater tornadoes.”

People living in these zones should review their tornado safety plans and ensure they have a reliable way to receive weather alerts. Download the FOX Weather app to get alerts based on your location and a 3D radar that lets you track storms.

The dangerous storms will march east by Sunday, with the worst weather expected in a swath that stretches from Virginia to Florida. Tornadoes, damaging wind and hail are possible with any severe storms that develop in this zone.