Weather is an all-encompassing term used to describe all of the many and varied phenomena that can occur in the atmosphere of a planet. The term is normally taken to mean the activity of these phenomena over short periods of time, usually no more than a few days in length. Average atmospheric conditions over significantly longer periods are known as climate. Usage of the two terms often overlaps and the concepts are obviously very closely related.
Basic mechanism
Weather phenomena result from temperature differences around the globe, which arise mainly because areas closer to the tropics, around the equator, receive more energy from the Sun than more northern and southern regions, nearer to the Earth's poles.
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BBC Weather Centre - Country Guides: Cuba - Provides climate and weather information, facts and statistics about the country, along with five-day forecasts for major cities.
Meta Description: [ BBC Weather Centre country guide displaying weather information, facts and statistics about one particular country in the world. ]
NOAA NWS - Cuba Weather - US government site provides hour-by-hour weather conditions for the past 24 hours for major cities and locations in the country.
Meta Description: [ Government Internet Service Home page. The starting point for official governemnt weather forecasts, warning, and meteorological products for forecasting the weather. ]
Weather Underground - Cuba - Displays current conditions for all major cities on one page, with five-day forecast and more detailed information for each available.