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Extreme Weather

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Liz Grimshaw

on 25 February 2013

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Transcript of Extreme Weather

CYCLONE Bhola Where: India, East Pakistan
When: Formed on the
7th November 1970
What: Category 3 hurricane
Deaths: 500 000
Damages: $86.4 million
10 metre storm surge up the Ganges
3.6 million people were directly affected
90% of fisherman suffered heavy loses Where: Bahamas, South Florida, Cuba, Louisiana,
Mississippi, Alabama
When: 23rd August, 2005
What: Category 5 hurricane
Deaths: 1836
Damages: $108 billion
53 different breeches in New Orleans which
submerged 80% of the city
3 million without electricity
wind speeds reached 175 mph HURRICANE Katrina DROUGHT HURRICANE Sandy BUSH FIRE TORNADO BUSH FIRE TORNADO DROUGHT BLIZZARD BLIZZARD Tri-State Where: Missouri, Illinois, Indiana
When: 18th March 1925
What: 9 known, the strongest was a F5 tornado
Deaths: over 800
Damages: $1.4 billion (2010 USD)
15 000 homes destroyed
Left the longest track,
over 219 miles long
9 schools were destroyed
Thousands left homeless EXTREME WEATHER
Mid-Atlantic America, Canada
When: Formed 22nd October 2012
What: Category 3 hurricane
Deaths: 284
total Damages: $75 billion
Impacts in America
20 000 flights cancelled
4.8 million left without power
7000 people spent nights in emergency shelters Joplin Where: Joplin, Missouri
When: 22nd May 2011
What: EF5 Tornado
Deaths: 160
Damages: $2.8 billion
Winds over 200 mph
15% of Joplin destroyed
7000 houses destroyed
A chemical plant leaked 2300 Kg
of Ammonia What is it?
"A hurricane is a intense rotating weather system which
has winds exceeding 74 mph" Where: Ardakan, Southern Iran
When: 3-9th February 1972
What: Blizzard which left snow up
to 7.9 m
Deaths: 4000
wiped 200 villages off the map
temperatures reached
-13 degrees Where: Afghanistan
What: Blizzard which reached 1.2 m in depth
When: February 2009
Deaths: 926
temperatures reached
-30 degrees
100 000 sheep and 315 000 cattle died
100 people have to have amputations
because of frostbite Peshtigo Fire Where: Peshtigo, Wisconsin
When: 8th October 1871
What: Firestorm
Deaths: 1200
1.2 million acres were burned
The fires were so intense they
jumped over the river What is it?
"A bushfire is a fire that burns in grass, bush or woodland and can threaten life, property and the environment" "a period of time without rain, or below the seasonal average rainfall" "a reduced flow of water in rivers and an area's water table not being replenished as quickly as it is being used" What is it? "a strong winter cyclone event producing large snowfall accumulations, usually combined with strong winds causing blowing and drifting of snow" What is it? "a powerful column of winds spiraling around a center of low atmospheric pressure" What is it? Where: China
When: 1958-1961
What: Famine caused
by prolonged drought
Deaths: over 15 million
end of the Great Leap Forward
Birth rate decreased by 1%
reports of cannibalism increased
crop production almost halved Kursha-2 Where: Kursha-2 USSR
When: 3rd August 1936
What: Firestorm
Deaths: 1200
A train full of escapees burned to
The whole town was annihilated The Great Chinese Famine Bengal Famine Where: Bengal (Now west Bengal and Bangladesh)
When: 1769-1773
What: Famine caused by drought
Deaths: Over 10 million
Widespread starvation
Large areas were depopulated as
people moved away
1/3 of Bengal's population died
The East India Company aggravated the famine by monopolizing
the grain market and by growing opium poppies
instead of food U.S Weather Disasters In America, weather disasters from 1980-1995 cost $339 billion with 46 disasters costing over $1 million. From 1996-2011, they cost $541 billion with 87 disasters costing over $1 million. These were the top ten weather disasters for the U.S in the past 31 years Hurricane Ivan 2004 $17 billion HEATWAVES FLOODS FLOODS HEATWAVE What is it? What is it? "A general and temporary condition of partial or complete inundation of normally dry land areas from overflow of inland or tidal waters from the unusual and rapid accumulation or runoff of surface waters from any source" "A prolonged period of excessively hot weather, which may be accompanied by high humidity" Hurricane katrina 2005 $146 billion Drought 1988 $78 billion Drought 1980 $56 billion Hurricane Andrew 1992 $44 billion Flooding Midwest 1994 $33 billion Hurricane Ike 2008 $29 billion Hurricane Rita 2005 $19 billion Hurricane Wilma 2005 $19 billion Hurricane Charley 2004 $18 billion Out of 133 weather disasters;
16 were Droughts
11 were Wildfires
17 were Floods
28 were Hurricanes
43 were Tornadoes/hailstorms/
16 were Blizzards/ice storms FLOOD Central China Floods Where: Yellow River, Yangtze River, Huai River
When: July- November 1931
What: Floods caused by
heavy rains
Deaths: Between 145000-4 million
Flood damage affected 28 million
waterborne diseases were rife
Waters reached 16 m in Hankou FLOOD Yellow River flood Where: Yellow river
When: September 1887
What: Heavy rain breaking
Deaths: 1-2 million
Covered 50000 square miles
2 million left homeless
half of the victims died from the
resultant pandemic HEATWAVE Where: Western Europe
When: June-August 2003
What: High temperatures
Deaths: 70000
Forest fires in Portugal
temperatures reached 45 Celsius in Spain
Total EU production of wheat
fell by 10% Where: Eastern Europe
When: June-August 2010
What: High temperatures
Deaths: 56000
150 hectares burned in Georgia
9 million hectares of crop was lost in Russia
Temperatures reached 41 Celsius HEATWAVES Northern Hemisphere summer What is the most extreme weather? You cannot pick just one, as each one causes different impacts. You then have to take into account where the disaster strikes. If it is in a poor country, then there is likely to be far more deaths and less economic damage, whereas in a richer country you would expect a lower death toll with far higher economic damage Hazards of a Hurricane Storm Surges: A uprising of the sea level, can be caused by hurricanes if strong winds push the water or if the storm creates suction Heavy Rainfall: This is produced by the hurricane and cause devastating impacts like flooding High Winds: Is another effect, and the wind speed and potential damage can be categorized by the Saffir- Simpson Hurricane Scale Tornadoes: Are often produced by hurricanes and cannot be predicted Rip tides: A strong sea current which pushes away from the shore if a storm is present Hazards of a Tornado Strong winds: These are generated by the tornado Flying Debris: This is caused by the strong winds which could pick up objects and fling them Subsidiary Vortices: They form of the side of a main vortex and often have the strongest wind speed, although they quickly die out Hazards of a Bushfire High temperatures: A bushfire is a widespread fire, and extreme temperatures in and around it are to be expected Smoke/ash: Can cause obstruction and damage to lungs if inhaled Fire whirls: A tornado like storm, with wind speeds over 160km/h and can last for over 20 minutes Hazards of a Heatwave High temperatures: This has several dangers, including heat cramps, fainting, heat exhaustion and heatstroke Unrelenting heat: This is where the temperature remains high constantly Hazards of a Drought High Temperatures: Often the high temperatures cause the drought and lead to other heat related hazards Lack of water: The lack of rainfall can cause reservoirs to dry up leading to dehydration, and damage to agriculture Dust storms: In some areas which experience drought the top soil becomes dry due to the lack of water which then can be blow by the wind Hazards of a Blizzard Cold temperatures: The cold temperatures can cause many health risks Heavy snowfall: A blizzard often brings heavy snowfall in a matter of hours, which can increase in height very quickly leading to a variety of impacts Hazards of a Flood Flash flooding: A rapid flooding of low-lying areas usually within 6 hours, caused by heavy rainfall Disease: Floods often lead to stagnant water, which waterborne diseases like cholera can spread
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