WIND
SPEED OBSERVATIONS
30-44 Mph Trees in motion. Light-weight loose objects (e.g., lawn furniture) tossed or toppled.
45-57 Mph
Large trees bend; twigs, small limbs break, and a few larger dead or weak branches
may brake. Old/weak structures (e.g., sheds, barns) may sustain minor damage
(roofs, doors). Buildings partially under construction maybe damaged. A few loose
shingles removed from houses. Carports may be uplifted, minor cosmetic damage to
mobile homes and pool lanai cages.
58-74 Mph
Large limbs break, shallow rooted trees pushed over. Semi-trucks overturned. More
significant damage to old/weak structures. Shingles, awnings removed from houses,
damage to chimneys and antennas; mobile homes, carports incur minor structural
damage; large billboard signs may be toppled.
75-89 Mph
Widespread tree damage (trees either broken or uprooted). Mobile homes may incur
more significant structural damage; be pushed off foundations or overturned. Roofs
may be partially peeled off industrial/commercial/warehouse buildings. Some minor
roof damage to homes. Weak structures (e.g., farm buildings, airplane hangars) may
be severely damaged.
90+ Mph
Groves of trees flattened. Mobile homes severely damaged; moderate roof damage to
homes. Roofs partially peeled off homes and buildings. Moving automobiles pushed
off dry roads. Barns and sheds completely demolished.
Note: All references to trees are for trees with foliage. Significantly higher winds may be required to cause similar
damage to trees without foliage. Very wet soil conditions may allow weaker winds (30-57 Mph) to uproot trees.