1 / 28

Hurricanes

Hurricanes. Chapter 13.3. Objectives. The conditions required for tropical cyclone development The life cycle of a tropical cyclone The dangers of tropical cyclones. Cyclone . Tropical cyclone Large, rotating, LOW pressure tropical storm. A.K.A.

idania
Download Presentation

Hurricanes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hurricanes Chapter 13.3

  2. Objectives • The conditions required for tropical cyclone development • The life cycle of a tropical cyclone • The dangers of tropical cyclones

  3. Cyclone • Tropical cyclone • Large, rotating, LOW pressure tropical storm

  4. A.K.A • Tropical Cyclones have different names depending on where they form • Pacific Ocean: Typhoon • Indian Ocean: Cyclone • Atlantic Ocean: Hurricane

  5. Requirements for Cyclone Formation • 1. Abundant supply of warm ocean water • 2. Mechanism to lift the warm air • 3. Minimum wind shear

  6. 1st stage of formation • Formative stage – moving tropical disturbance • Less dense, moist air rises • Rainfall and air circulation • As air moves to replace low pressure area, coriolis effect takes place • Produces a counter-clockwise rotation of the air • Known as tropical depression (less than 38 mph)

  7. 2nd stage of formation • Mature stage • moving air approaches center, more condensation • more energy • Air pressure in center continues to drop • Wind speed increases • 39 to 73 mph • Tropical storm

  8. Mature stage When a tropical storm intensifies with winds greater than 73 mph it becomes a hurricane • Eye • Center of storm • Calm and sunny • Eyewall: surrounds the eye • Strong winds and dense clouds on the edge of the eye

  9. 3rd stage of formation • Dissipation stage • Moved over land – friction • Moved over cold water • No longer has warm air at the surface to feed it

  10. Tropical cyclone movement • Move according to wind currents which steer them • Caught up in the high pressure systems that are present in the tropics • Move west and become caught up in the westerlies • React with mid-latitude systems • Interaction with many systems make their path unpredictable

  11. Saffir-Simpson Hurricane Scale

  12. Hurricane hazards • Damage • Mostly caused by high winds • Storm surge • Hurricane force winds carry a mound of ocean water toward shore

More Related