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Fronts and severe weather lecture 22.3

Fronts and severe weather lecture 22.3 . Fronts. A front is where masses of air collide. Stationary front. Cold and warm air meet They move side by side along the front. Warm front. Warm air moves up over cold Air cools, forms clouds (cirrus, cumulus) Later, nimbostratus and steady rain.

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Fronts and severe weather lecture 22.3

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  1. Fronts and severe weatherlecture 22.3

  2. Fronts • A front is where masses of air collide.

  3. Stationary front • Cold and warm air meet • They move side by side along the front

  4. Warm front • Warm air moves up over cold • Air cools, forms clouds (cirrus, cumulus) • Later, nimbostratus and steady rain

  5. Cold front • Cold air moves in under warmer air • Warmer air is pushed up quickly • Thunderstorms, maybe tornadoes

  6. Lightning • Electrical charges in a cloud can produce a spark. • Thunder is the shockwave it creates

  7. Lightning storms

  8. Tornadoes Funnels of high-speed wind Occur in spring, early summer when warm, moist air from Gulf meets cool, dry air from Canada

  9. Tornadoes, cont’d

  10. Hurricanes • Begin over warm oceans, in late summer • Energy is released from condensing clouds • Extreme low pressure in the “eye”

  11. Hurricane damage

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