Citara was at the Dow Chemical plant, formerly Rohm and Haas, at Route 413 & Old Route 13 in Bristol when he saw the tornado right in front of him.
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In the video that has been shared over 1,000 times on Facebook, Citara alerted one of his coworkers over a walkie-talkie.
"John, come up here quick, quick, quick! There's one crossing over the Delaware," Citara said.
As Citara continued to record, the tornado twirled and twirled as it crossed the Delaware River; at one point, the tornado's direction appeared to aim right toward Citara.
"It looks like it's coming right towards the plant, dude," Citara told his coworker.
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Powerful tornado rips through Mullica HIll, NJ community
Citara could not believe what he was seeing, letting out a few expletives.
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The tornado then went back up as Citara let out a laugh of disbelief, with some relief as well.
Citara said everyone at the plant was safe.
The EF-1 tornado was confirmed in Edgewater Park, New Jersey.
According to the National Weather Service, at least seven tornadoes touched down in New Jersey and suburban Pennsylvania on Wednesday evening.
In a preliminary rating by the National Weather Service, a tornado that tore through Mullica Hill, New Jersey has been deemed consistent with an EF-3 rating with max winds of 150 mph.
Chopper 6 video shows tornado damage in Mullica Hill, N.J.
An EF-2 tornado with max winds of 130 mph touched town in Montgomery County, Pa. The twister barreled through Fort Washington, Upper Dublin Township into Horsham Township.
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Meanwhile, at least four people died from the storm, Montgomery County officials confirm - three in their county and one resident who was driving in Bucks County.
In Buckingham Township, Bucks County, an EF-1 tornado with max winds of 100 mph touched down in the area.
An EF-0 tornado with max winds of 75 mph was confirmed in Princeton, New Jersey.
In Upper Makefield Township, Pa., officials said an EF-1 tornado with max winds of 90 mph touched down.
The National Weather Service confirmed late Thursday night that the tornado that whipped through Oxford, Pa. was an EF-1 twister with max winds of 95 mph.