25-31 mph
Large branches in motion; whistling in telephone wires.

32-38 mph
Whole trees in motion; inconvenience felt walking against wind.

39-54 mph
Twigs break off trees; wind generally impedes progress.

55-72 mph
Damage to chimneys and TV antennas; pushes over shallow-rooted trees.

73-112 mph
Peels surfaces off roofs; windows broken; mobile homes overturned; moving cars pushed off road.

113-157 mph
Roofs torn off houses; cars lifted off ground.

This and more information can be found at the National Oceanic and Atmospheric Administration Web site at www.noaa.gov