The wind map is a visualization of the surface wind circulation in the United States. The data, updated hourly, is pulled from the National Weather Services' National Digital Forecast Database. The map is intended to draw attention to the massive amount of renewable wind energy that flows across the United States, most of it not utilized.
Of more recent interest, the map shows the awesome power of Hurricane Sandy as it draws the winds east of the Mississippi into the storm system. Be safe over there. BP