West Bay - Weather
Supplied by BBC Weather
Weather Observations - Rain Radar, Satellite, etc.
Supplied by Meteorological Office
Supplied by BBC Weather / Environment Agency
There are four jet streams, two flowing in the northern hemisphere and two in the southern hemisphere, referred to as the Polar Front Jet Stream and Subtropical Jet Stream. They are rivers of fast moving air in excess of 100 miles per hour, at an altitude of 20,000 feet or more, flowing around the Earth from west to east. The northern Polar Front Jet Stream can have a dramatic effect on the UK weather. The Jet Streams are affected by the El Niño Southern Oscillation, a cycle which can last between 2 to 7 years. The cycle alternates between El Niño years, when the Eastern Pacific Ocean (centred off the coast of Peru) is unusually warm and La Niña years, when the Eastern Pacific Ocean is cool. La Niña is linked to bad summers across Europe. Bad weather (Low Pressure) tends to be pushed north of the Jet Stream. Good weather (High Pressure) tends to be pushed south of the Jet Stream. If the Jet Stream flows north of the UK, expect good weather. If the Jet Stream flows south of the UK, expect bad weather.
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