A tornado watch advisory remains in effect for Ascension, Jefferson, Livingston and Orleans parishes, and has been extended until 5 a.m., according to the National Weather Service.

The watch also includes Assumption, Jefferson Lafourche, Plaquemines, St.Bernard, St. Charles, St. James, St. John The Baptist, St. Tammany, Tangipahoa, Terrebonne and Washington parishes, a weather advisory reported.

A tornado watch designates that conditions are favorable for a tornado to form, weather authorities said.

In Livingston Parish, the National Weather Service’s website shows that the sheriff’s office reported to them a tornado touchdown at around 8:20 p.m. near La. 63 and La. 442. There were trees down, according to the report.

Another report from the sheriff’s office to NWS described a brief touchdown around 7:50 p.m. and damage to fences near Denham Springs.

In a phone interview, Denham Springs-resident Ryan Moran said he pulling into his driveway with his family just after 8 p.m., when he saw a tornado approaching their subdivision.

“We ran in the house,” he said. “It lasted about 20 seconds and when we came outside, there was damage everywhere -- garage doors, fences, flipped-over trampolines.”

Livingston Parish sheriff’s deputies have not yet confirmed the damage in the parish, spokeswoman Lori Steele said.

The National Weather Service also indicated that the tornados are not yet confirmed.

“If there’s damage reported, we’d go out tomorrow and check things out before confirming anything,” NWS meteorologist Gavin Phillips said.