Meteorologist Mitchell Gaines says it was an F-0 twister - the lowest classification.
It touched down at 6:31 p.m. Tuesday in the Philadelphia suburb of Mount Ephraim.
It traveled about on the ground for about 120 yards, cutting a path up to 75 feet wide with winds topping out at 70 mph.
It was enough to knock down one large tree and down several limbs, causing roof damage to some homes in the area.
The last confirmed tornado in New Jersey was in Millstone on Aug. 9, 2011.
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