WIND SIGNAL n.
In general, any signal announcing information concerning winds, and esp. the expected approach of winds whose direction and force are dangerous to shipping, etc. The wind-signal system of the United States Weather Bureau consists of storm, information, hurricane, hot wind, and inland storm signals.
WINDFALL n. 2 definitions
Anything blown down or off by the wind, as fruit from a tree, or the tree itself, or a portion of a forest prostrated by a violent wind, etc. "They became a windfall upon the sudden." Bacon.