SUPER TORNADO OUTBREAK 148 TORNADOES IN 18 HOURS 315-330 DEATHS $3.5 BILLION (2005 DOLLARS) APRIL...
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Transcript of SUPER TORNADO OUTBREAK 148 TORNADOES IN 18 HOURS 315-330 DEATHS $3.5 BILLION (2005 DOLLARS) APRIL...
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SUPER TORNADO OUTBREAK
148 TORNADOES IN 18 HOURS
315-330 DEATHS
$3.5 BILLION (2005 DOLLARS)
APRIL 3-4, 1974
Walter Hays, Global Alliance for Disaster Reduction, University of
North Carolina, USA
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CAUSE
A powerful spring-time low pressure system that developed
across the North American Interior Plains on April 1st was intensified when it collided with a system of
very moist cold air creating a large contrast in temperature.
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SUPER TORNADO OUTBEAK: APRIL 3-4, 1974
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STATES IMPACTED BY THE 1974 TORNADO OUTBREAK: APRIL 3-4
• Illinois
• Indiana
• Ohio
• Kentucky
• Michigan
• Tennessee
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STATES IMPACTED BY THE 1974 TORNADO OUTBREAK: APRIL 3-4
• Alabama
• Mississippi
• Georgia
• North Carolina
• Virginia
• West Virginia
• New York
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DIMENSIONS OF THE TORNADO OUTBREAK
• DURATION: 18 HOURS
• MAXIMUM: F5
• AREA OF IMPACT: 13 STATES
• DAMAGE: $3.5 BILLION (2005 DOLLARS)
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DISTRIBUTION OF STORMS IN THE 1974 OUTBREAK
• 6 F5’s (Including the Xenia storm)
• 24 F4’s
• 34 F3’s
• 32 F2’s
• 33 F1’s
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XENIA, OHIO: ONE OF THE WORST TORNADOES IN HISTORY
The tornado formed near Bellbrook, Ohio at 4:30 pm EDT, and reached Xenia as a F5 storm at 4:40 pm.
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THE TORNADO DESTROYED XENIA
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NATURAL HAZARDS FOR WHICH NATURAL HAZARDS FOR WHICH EVACUATION IS TYPICALEVACUATION IS TYPICAL
NATURAL HAZARDS FOR WHICH NATURAL HAZARDS FOR WHICH EVACUATION IS TYPICALEVACUATION IS TYPICAL
FLOODS
HURRICANES
TYPHOONS
TSUNAMIS
VOLCANIC ERUPTIONS
WILDFIRES
ADVANCE WARNING FOR TORNADOES IS INADEQUATE EXCEPT FOR GOING TO A SAFE ROOM IN THE HOUSE
ADVANCE WARNING FOR TORNADOES IS INADEQUATE EXCEPT FOR GOING TO A SAFE ROOM IN THE HOUSE
GOAL: MOVE PEOPLE OUT GOAL: MOVE PEOPLE OUT OF HARM’S WAYOF HARM’S WAY
GOAL: MOVE PEOPLE OUT GOAL: MOVE PEOPLE OUT OF HARM’S WAYOF HARM’S WAY