American Isotach Wind Map
- Values are 3-second gust speeds in miles per hour (m/s) at 33ft (10m) above ground for Exposure C category and are associated with an annual probability of 0.02.
- Linear interpolation between wind speed contours is permitted.
- Islands and costal areas shall use wind speed contour or coastal area.
- Mountainous terrain, gorges, ocean promontories, and special wind regions shall be examined for unusual wind conditions.
PDF Version of American Isotach Wind Map
