The scale had the advantage of relating ranges of sustained winds to effects on vegetation and structures. No real damage occurs in building structures. Some damage is done to poorly constructed signs. Considerable damage is done to shrubbery and tree foliage, some trees are blown down. Major structural damage occurs to exposed mobile homes.
Extensive damage occurs to poorly constructed signs.
Considerable pier damage occurs, marinas are flooded. Small craft in unprotected anchorages torn from moorings. Evacuation of some shoreline residences and low-lying island areas is required. Practically all poorly constructed signs are blown down. Some damage to roofing materials of buildings occurs, with some window and door damage.