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There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage
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There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

Dec 13, 2015

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Gregory Wiggins
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Page 2: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

Cumulus Stage – air starts to rise upward creating updrafts of moisture. Cloud droplets coalesce and form larger droplets.

Page 3: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

Mature Stage – Precipitation falls creating downdrafts. The updrafts and downdrafts form a convection cell with gusty winds.

Page 4: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

Dissipation Stage – The convection cell is losing its steady supply of warm, moist air from the downdrafts. The updrafts cease and the precipitation stops.

Page 5: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

Severe thunderstorms can develop supercells, which have intense, rotating updrafts.

About 10% of thunderstorms are severe.

Page 6: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

Lightning – friction between the clouds creates regions of air with opposite charges.

Page 8: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

Lightning heats the air to about 300,000 C.

Thunder – sound made by the rapid expansion of air around the lightning bolt.

Page 13: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

The Fujita tornado intensity scale –classifies tornadoes.

They usually form in the spring in the late afternoon. Tornado alley – northern Texas through Oklahoma, Kansas, and Missouri.

Page 14: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

Tropical cyclones (Hurricanes) – large, rotating, low-pressure storms.

• common in the summer and fall• thrives on energy from warm, tropical

oceans • air pressure in the center is low• moves because wind currents steer

themeye – the calm center of the stormeyewall – band immediately surrounding

the eye that has the strongest winds

Page 15: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

The Saffir-Simpson hurricane scale classifies hurricanes according to their wind speed, air pressure in the center, and potential for property damage.

The Saffir-Simpson hurricane scale classifies hurricanes according to their wind speed, air pressure in the center, and potential for property damage.

Page 17: There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.

A storm surge occurs when hurricane-force windsdrive a mound of ocean water toward coastal areas, where it washes over the land. They can reach 6m above normal sea level. Lots of rain and flooding also causes enormous damage.