Update: The tornado warning has expired.
The national weather service in Jacksonville has issued a tornado warning for northeastern Alachua County, Bradford County and northwestern Clay County.
At 1:31 p.m., a severe thunderstorm capable of producing a tornado was located 7 miles south of Sampson or 10 miles west of Keystone Heights, moving north at 45 mph.
MORE | For the latest on Tropical Storm Colin
IMPACT: Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows and vehicles will occur. Tree damage is likely.
DANGER ZONES: Dangerous storm will be near Sampson around 1:40 p.m.; New River around 1:45 p.m.; and Starke around 1:50 p.m.
ADVISORY: Take cover now. ... Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors in a mobile home or in a vehicle move to the closest substantial shelter and protect yourself from flying debris.