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

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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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Kansas City, Missouri Weather

Kansas City, Missouri Weather :: 68F Clear
Wed, 20 Aug 2008 04:54:00 -0500
68F Clear
Forecast for Today
Wed, 20 Aug 2008 03:41:00 -0500
Mostly cloudy. Slight chance of showers in the morning. Then a chance of showers in the afternoon. Highs in the upper 70s. East winds 5 to 10 mph. Chance of precipitation 30 percent.
Forecast for Tonight
Wed, 20 Aug 2008 03:41:00 -0500
Cloudy with chance of showers and isolated thunderstorms. Lows in the mid 60s. East winds 5 to 10 mph. Chance of precipitation 50 percent.
Forecast for Thursday
Wed, 20 Aug 2008 03:41:00 -0500
Showers likely and isolated thunderstorms. Highs in the upper 70s. Southeast winds 5 to 10 mph. Chance of precipitation 60 percent.
Forecast for Thursday Night
Wed, 20 Aug 2008 03:41:00 -0500
Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 60s. South winds 5 to 10 mph.
Forecast for Friday
Wed, 20 Aug 2008 03:41:00 -0500
Partly cloudy. Highs in the upper 80s. South winds 5 to 15 mph.

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