Weather Warning Display Signals Small Craft Advisory: Winds in the range of 21 to 33 knots (24 to 38 mph) create conditions considered dangerous to small vessels. Gale Warning: Winds are in the range of 34 to 47 knots (39 to 54 mph). Storm Warning: Winds are 48 knots (55 mph) and above. If winds are associated with a tropical cyclone, this warning signals winds of 48 to 63 knots. Hurricane Warning: Winds are 64 knots (74 mph) and above. This warning is displayed only in connection with a hurricane.