Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

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In the Southern Hemisphere: Tropical cyclone (tc) 16s (Gabekile), located approximately 809 nm south of Diego Garcia, is tracking north-northeastward at 04 knots.

NewsBytes:

UK – Major incidents have been declared in south Wales and parts of England, as Storm Dennis batters the UK. South Wales Police has been dealing with “multiple” landslides and floods – some trapping residents. Homes have also been flooded, while police in Worcestershire are searching for a person who is feared to have been swept into the River Teme. More than 700 flood warnings and alerts are in place across the UK, as of 23:45 GMT on Sunday. There are currently eight severe flood warnings in England, which mean there is a danger to life.

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Indian Ocean Dipole

Many parts of Kenya have been experiencing torrential rainfall for a couple of months now. This has resulted in floods and landslides.

The unusual weather can be attributed to the Indian Ocean Dipole. This is the difference in sea surface temperatures between the eastern and western tropical Indian Ocean.

In Kenya, when warmer sea surface temperatures are experienced heavy rainfall occurs, while hot dry conditions (conducive for wildfires) are experienced in Australia. When warmer sea surface temperatures are experienced off the West Coast of Australia, Australia is likely to experience heavy rainfall, while Kenya experiences drought conditions.

The larger the difference in temperatures between the eastern and western tropical Indian Ocean, the more severe the climatic effects will be.

This event is similar to the El Niño Southern Oscillation that occurs in the tropical Pacific Ocean.

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