It may travel unnoticed across the ocean for thousands of miles from its point of origin and builds up to great heights over shallower water. Also known as a seismic sea wave, and incorrectly, as a tidal wave. TULE FOG Ground fog in the central valley of California and the leading cause of weather-related casualties in that state. It forms at night and in the early morning when the ground cools, lowering the air temperature near the ground to or below its initial dew point . The irregular and instantaneous motions of air which is made up of a number of small of eddies that travel in the general air current.
Atmospheric turbulence is caused by random fluctuations in the wind flow .
It can be caused by thermal or convective currents, differences in terrain and wind speed , along a frontal zone, or variation in temperature and pressure . Often called dusk , it is the evening period of waning light from the time of sunset to dark. The time of increasing light in the morning is called dawn . Twilight ends in the evening or begins in the morning at a specific time and can be categorized into three areas of decreasing light. Civil twilight is the time in the evening when car headlights need to be turned on to be seen by other drivers.