WHAT DO HURRICANES AND TORNADOES HAVE IN COMMON Low Pressure Strong Winds Hazardous to Life and Property HOW DO THEY DIFFER Location Size Duration Season of Occurrence Distinctive Hazards ID: 582549
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Slide1
Tornados vs. HurricanesSlide2
WHAT DO HURRICANES AND TORNADOES HAVE IN COMMON?
Low Pressure
Strong Winds Hazardous to Life and Property Slide3
HOW DO THEY DIFFER?
Location
Size Duration Season of Occurrence Distinctive Hazards Slide4
WHEN DO THEY OCCUR?
Hurricane season
Late Summer and Fall Tornado seasonSpring and Early Summer Slide5
Hurricanes form over warm (80 °F) tropical seas
Latitude 7-15 degrees North and South of the equator
Tornadoes form over land in the mid-latitudes Slide6
TornadoesSlide7
What is a tornado?
A tornado is a violent whirling wind that moves across the ground in a narrow path.Slide8
How are Tornadoes formed?
Late in the day, when earth’s surface is very warm, convection
(The flow of heat through a material, causing hot parts to rise and cooler parts to sink.) can get very strong. This can lead to a tornado.Slide9
Tornado Happenings
1.When the updraft in a
convection cell is really strong, the air rushes in from all sides at high speeds.Slide10
2. Air curves into a spin. This lowers the pressure even more. Air rushes in even faster, and the pressure gets even lower, and so on.
Like a skater who pulls her arms in close to her sides. The tornado spins faster and faster.
Slide11
3. As the tornado gets stronger, a funnel forms that can destroy anything in it’s path. The center of the tornado can reach speeds of
300
miles per hour or more.Slide12
Where Do Tornadoes Happen?
Tornadoes happen where dry, cold air masses mix with warm, moist air masses.
More tornadoes occur in the United States than in any other country, especially in the area known as
TORNADO ALLEY
.Slide13Slide14
HurricanesSlide15
What is a Hurricanes
A hurricane can best be described as a huge tropical storm with winds up to 200 mph!
Storm usually doesn’t last for more than 7-10 days.As it moves inland it continues to move across the land but it begins to weakenSlide16
Intertropical Convergence Zone
The ITCZ is an area of low pressure located roughly 5 degrees North and South of the Equator. It is a place where air converges, rises, and condenses (forming clouds). It is the rainiest place on Earth!Slide17
So What Does a Hurricane Need in Order to Develop?
So a hurricane needs warm water, time to grow, and favorable upper level winds in the troposphere. If the winds are too strong, they will blow the hurricane apart – we call that wind shear!Slide18
The End