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Download Storms - Thomas C. Cario Middle School
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Storms Tornado Thunderstorms Hurricanes Cyclone vs. Anti-cyclone • Cyclone • Low Pressure • Counter Clockwise winds • Storms/ precipitation • • • • Anti-cyclone High Pressure Clockwise winds Dry clear weather Tornadoes • • • • • Low pressure Form in Cumulonimbus clouds Spring and summer Late afternoon when the ground is warm Warm humid air mass– meets--- a cool dry air mass • * rapidly whirling, funnel shaped cloud that reaches the ground from a storm cloud Tornado Alley • • • • • North-Central Texas Kansas Nebraska Oklahoma *BUT can happen anywhere Thunderstorms • Form inside Cumulonimbus clouds • Warm air is forced upward at a Cold Front • Produce: heavy rain, thunder, lightning, and sometimes hail Thunder • When lightning heats the sky to 30,000ºC • The lightning creates a loud explosion • Light travels faster than sound, explaining why the lighting occurs before the thunder Lightning • A sudden spark, or energy discharge, as electricity charges jump between parts of a cloud, or between the cloud to the ground. Hurricanes • • • • • Form over warm tropical oceans Winds at least 75 mph Eye- calm center of hurricane Weakens over land The lower the pressure, the stronger the storm • Barrier islands protect the coast by weakening the hurricane Storm Surge • A dome or wave of water that sweeps across the coast onto the land where a hurricane lands. • This causes flooding and possible water damage • Wind and storm surges cause most of the damage
