The part of the typhoon where the highest wind speeds occur. The Eye-wall is a small area that surrounds the eye of the typhoon, usually only extending about 10 to 20 miles from the calm eye. The feeder bands literally feed warm moist tropical air into the developing cyclone. Winds blow out and away from the area of highest atmospheric pressure. These systems produce sunny skies and fair weather.
Winds blow inward toward an area of lowest atmospheric pressure.
These systems produce clouds and rain. A weather instrument used to observe rainfall near a land area. The radar beam can extend to about 240 miles from land but is most accurate closer in. Doppler radar can measure wind speed by calculating the motion of rain drops in the atmosphere. This is accurate within 100 miles of the land base.