48–55 knots. Very high waves with long overhanging crests; the sea surface takes on a white appearance. Safety and Preparation Guide
"Gale force" (often misspelled as "gail force") primarily refers to sustained surface winds between (39–54 mph). In meteorology, these conditions correspond to forces 7 through 10 on the Beaufort Wind Scale . Understanding Gale Force Classifications gail force
Gale force winds can cause structural damage to roofing and siding and create life-threatening conditions for mariners. Weather Spotter's Field Guide - Non-supercell Tornadoes 48–55 knots