Something went wrong - please try again later. Sign Up. Now another storm — Irma — is heading towards the Caribbean and Florida.
Similar weather in other regions is referred to as typhoons or cyclones. At its strongest, Katia was a Category 4 storm , the second major hurricane of the Atlantic hurricane season.
Though Katia is now a post-tropical storm, it is capable of producing Lili-like wind gusts that are strong enough to down trees and power lines and cause widespread damage. Gusty winds from Katia began today Sept. A deep area of low pressure containing Katia is expected to bring the strongest winds to Northern Ireland, the Central Lowlands and southern Scotland and parts of northern England. Large waves could top sea walls in western coastal areas.
Parts of western Scotland could flood. Collectively, they are often referred to as 'tropical cyclones'. In the tropics there is a broad zone of low pressure which stretches either side of the equator. The winds on the north side of this zone blow from the north-east the north-east trades and on the southern side blow from the south-east south-east trades. Within this area of low pressure the air is heated over the warm tropical ocean.
This air rises in discrete parcels, causing thundery showers to form. These showers usually come and go, but from time to time, they group together into large clusters of thunderstorms.
This creates a flow of very warm, moist, rapidly rising air, leading to the development of a centre of low pressure, or depression, at the surface. There are various trigger mechanisms required to transform these cloud clusters into a tropical storm and eventually into a hurricane. These trigger mechanisms depend on several conditions being 'right' at the same time. The most influential factors are:.
Tornadoes form wen the cold and moist air mixes with the hot and dry air from the inlands of America. They will mix forming a storm cell and will start to rotate. Once the tornado starts to rotate it will start to form a funnel. Once the funnel touches the ground the tornado will start to move in the direction of the wind.
The tornado will pick up speed the moment it hits the ground and will depending on the strength flatten everything that gets in its path. The deadliest American hurricane on record was a Category 4 storm that hit the island city of Galveston, Texas, on September the 8 th Some 8, people lost their lives when the island was destroyed by ft waves and mph winds.
Hurricanes occur when hot and dry air mixes with cool and moist air. It then gets carried with the jet stream but as it moves it gain strength and gets bigger and bigger.
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