One of the dozens of tornadoes that ripped across the South on Easter Sunday was so powerful, its mark on Mississippi was picked up by satellites.

More than 30 people were killed in a two-day period as severe storms tore across the South, leaving more than 1 million homes without power. Mississippi Governor Tate Reeves said the storms left “incredible damage” in his state, where 12 people were killed in the storms.

“We’re used to seeing tornadoes and tornadic activity in April in Mississippi, What we’re not used to is what we saw last Sunday, which was two different tornadoes basically taking the exact same path approximately one hour apart,” Governor Reeves said.

The National Weather Service (NWS) office in Jackson, Mississippi said one of those tornadoes that went roughly southwest of the town of Bassfield has a preliminary rating of an EF-4 tornado with peak winds of 170 mph.

The agency released a satellite image that showed the “big long-track tornado scars,” which included the mark from the powerful tornado that killed four people.

The weather service said it traveled at least 67.7 miles from Jefferson Davis to Clarke County and had a width of at least two miles.

A second tornado nearby started in Lawrence County and traveled for 82.5 miles, reaching the strength of an EF-3 tornado with a maximum width of one mile.

Reeves said a tornado staying on the ground that long in his state was “unheard of.”