HURRICANES NATURES FURY

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HURRICANES NATURES FURY!!!
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Check these out
Youd probably want to evacuate at this point
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What kind of damage are we talkin about here?
Might want to take the detour
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Ok, So What Exactly Is a Hurricane?
A hurricane can best be described as a huge
tropical storm (up to 600 miles in diameter)!
Winds can be up to 200 mph! Storm usually
doesnt last for more than 7-10 days. It moves
across the ocean at around 10-20 mphnot too fast
really!
Arrows indicate feeder bands or rain bands
The winds are the strongest around the eye wall.
They eye of the storm is usually about 20 miles
in diameter. Within the eye, winds are calm and
the weather is great. Strongest winds are on the
right side, heaviest rain is usually on the left
side.
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Scaryso when do I need to watch out for these
things??
Since were in the USA, well focus on what
meteorologists call the Atlantic Basin. The
Atlantic basin includes the Atlantic Ocean,
Caribbean Sea, and the Gulf of Mexico.
The hurricane season is just a name for the
time period when we expect to see tropical
systems develop. The hurricane season for the
Atlantic runs from June 1st November 30th.
Peak season is the middle part of Septemberwhy
do you think this is?
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So where are these Atlantic Basin Hurricanes
forming???

• Storms of the Atlantic basin will begin forming
  in one of three places
• Off the coast of Africa
• In the Caribbean Sea
• In the Gulf of Mexico

What is the ITCZ????
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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!
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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!
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Evolution of Hurricane Development -- Stages
Stage 1 Tropical Wave (Depression)
Usually has begun its life off of the west coast
of Africa in the ITCZ. Tropical depressions have
winds of less than 39mph, and are not given a
name.
Lacks structure no well developed feeder bands
or eye
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Evolution of Hurricane Development -- Stages
Stage 2 Tropical Storm
At this point, the tropical storm is beginning to
develop some serious structure. Winds range from
40-73 mph. In the Atlantic, storms are given a
name when they reach this stage.
Feeder bands are beginning to develop you can
see the center of the low pressure system more
easily. Eye and eye wall still not well formed.
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Evolution of Hurricane Development -- Stages
Stage 3 Category 1 Hurricane
Winds range from 75-94 mph.
Well developed feeder bands. An eye begins to
form (although it is covered in clouds). Storm
is tightening around center.
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Evolution of Hurricane Development -- Stages
Stage 4 Category 2 Hurricane
Winds range from 95-110 mph.
Well developed feeder bands. An eye and eye wall
are usually very well formed. Storm continues to
tighten around center.
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Evolution of Hurricane Development -- Stages
Stage 5 Category 3 Hurricane
Winds range from 111-130 mph.
Now considered a Major Storm. Intense flooding
and building damage will occur to most areas on
the coast. Further inland, the damage will still
be substantial.
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Evolution of Hurricane Development -- Stages
Stage 6 Category 4 Hurricane
Winds range from 131-155 mph.
All shrubs, signs and trees blown down. COMPLETE
DESTRUCTION of mobile homes. Extensive damage to
doors and windows. Major damage to lower floors
of structures near the coast.
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Evolution of Hurricane Development -- Stages
Stage 7 Category 5 Hurricane
Winds greater than 156 mph!
Complete roof failure on many residential and
industrial buildings. Some complete building
failures with small utility buildings blown over
or away. Massive evacuation of residential areas
on low ground within 5-10 miles of the coastline
maybe required.
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Saffir-Simpson Scale of Hurricane Intensity
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Hurricane Naming System Why do they have names
anyway?
AndreaBarryChantalDeanErinFelixGabrielleHum
bertoIngridJerryKarenLorenzoMelissaNoelOlga
PabloRebekahSebastienTanyaVanWendy

• In 1953 the National Weather Service began naming
  storms after women.
• In 1979, mens names were added to the list of
  hurricane names.
• In the Atlantic, there are 6 lists of names that
  are recycled.
• In the case of storms so devastating that
  reusing the name is inappropriate, the name is
  taken off the list and another name is used to
  replace it. The name Katrina is one that will
  be removed from the list.

This years list
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More cool stuff to check out
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Aftermath
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Aftermath
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Aftermath
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Aftermath