– An organized mass of tropical thunderstorms, with a slight cyclonic circulation, and winds less than 20 knots.

– An organized cyclone in the tropics with wind speed between 35 and 64 knots.

– The lowest layer of the atmosphere where the temperature decreases with height. Most of earth’s weather occurs in this layer.

-An elongated area of low pressure at the surface or aloft.

– An ocean wave generated by a submarine earthquake, volcano or landslide. (Also known as a seismic seawave, and incorrectly as a tidal wave).

– Disrupted flow in the atmosphere that produces gusts and eddies.

– To change slightly. Often in reference to slightly changing MOS output or any other form of model guidance.

– A hurricane that forms in the Western Pacific Ocean.