At 626 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from near Callahan to near Oakleaf Plantation. Movement was east at 10 mph. Outflow boundary and storms could produce gusts 40 to 50 mph. Colliding boundaries could spin up a quick landspout. HAZARD...Landspouts and wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Jacksonville, Fernandina Beach, Orange Park, Callahan, Jacksonville International Arpt, Unf, Mandarin, Fruit Cove, Arlington, and Middleburg.