STORMS
Storms are always associated with low pressure.
THUNDERSTORMS
Warm air rises quickly and condenses to form thunderheads: (cumulonimbus clouds)
Up and down air currents build-up of electrical charge: released as lightning.
TORNADOES
Form from severe thunderstorms.
Vortex (center) has VERY low pressure; extremely strong counterclockwise winds. (300-400 mph)
Damage is severe, but localized. tornado water spout tornado damage
HURRICANES
Originate as low pressure systems over warm waters in late summer.
Constant cycle of evaporation and condensation lowers pressure and strengthens winds. (over 75 mph)
Damage is extensive due to sustained heavy winds over a large area.
Storm surge can cause flooding on the coast. Katrina flooding
Storms get their energy from the condensation of water vapor which releases energy. (540 cal/g) hurricane formation satellite view
Hurricanes weaken over land. Hurricane path