GG231 Lecture Notes - Lecture 10: Maximum Sustained Wind, Indian Ocean, Wind Shear
Document Summary
Tropical cyclones and extratropical cyclones differ; however, some tropical cyclones transform into extra tropical cyclones. Low intensity tropical cyclones are called depressions, these can form from depression if winds increase and rotate. Tropical storms can form from depressions when the maximum sustained wind speeds reach 63 kph. High intensity tropical cyclones are hurricanes (minimum 119 kph an hour winds) Most hurricanes start off as tropical disturbances and form only in oceans with water warmer than. Tropical disturbance is a large area of unsettled weather that it typically 200-600 km in diameter. A tropical disturbance may develop into a tropical depression if winds increase and rotate around the area of disturbed weather. When winds reach 63 kph a depression becomes a storm classification of storms from weakest to strongest. Tropical disturbance (large areas of unsettled land) Tropical storm (winds = 63 kph and potential from large amounts of rain fall) Hurricane (winds =119 kph) geographic regions at risk.
