EF0 tornado in Duval County, Florida

A brief EF0 tornado with maximum winds near 80 mph produced widespread tree damage just east of Interstate 95 in the Bartram Park area of the Jacksonville Southside. The tornado touched down just west of Bartram Park around

4:08 pm, north of Arching Branch Circle, and tracked quickly

to the ENE across Woody Vine Drive and Roundleaf Drive before

dissipating across a wooded area just west of I-95 around

4:10 pm. There was some minor structure damage to gutters

and window screens, but the majority of damage included

snapped trees and large limbs blown down. There were

some trees were blown down and uprooted, indicative of a

descending rear flank downdraft.

A strong pre-frontal squall line of strong to severe storms moved quickly eastward across SE GA and NE FL during the afternoon and exited off the SE GA coast into the Atlantic waters by the late afternoon and offshore of the NE FL coast by the evening. Strong dynamics with this system included a very strong low-level jet of 45-55 knots and 0-6 km shear of 50-70 knots, which along with good lapse rates aloft around 6.5 C/km and high dewpoints into the upper 60s created 500-800 J/KG of CAPE. These ingredients promoted threat of damaging wind gusts of 50-70 mph or greater, hail, and isolated tornadoes within more intense storms embedded within the Squall line.