1. Evin Pearson
CI 350
UNIT PLAN
POWERPOINT #1
HURRICANES
12/5/12

2.  giant, spiraling tropical storms that can pack
wind speeds of over 160 miles an hour and
unleash more than 2.4 trillion gallons of rain
a day. These same tropical storms are known
as cyclones in the northern Indian Ocean and
Bay of Bengal, and as typhoons in the
western Pacific Ocean.

3.  The Atlantic Ocean’s hurricane season
peaks from mid-August to late
October and averages five to six
hurricanes per year.

4.  When they come onto land, the heavy
rain, strong winds and heavy waves
can damage buildings, trees and cars.
The heavy waves are called a storm
surge.

5.  The difference between a tropical storm
and a hurricane is wind speed –
tropical storms usually bring winds of
36-47 miles per hour, whereas
hurricane wind speeds are over 74
miles per hour.

6.  Hurricanes are classified into five categories, based on
their wind speeds and potential to cause damage.
•Category One -- Winds 74-95 miles per hour
•Category Two -- Winds 96-110 miles per hour
•Category Three -- Winds 111-130 miles per hour
•Category Four -- Winds 131-155 miles per hour
•Category Five -- Winds greater than 155 miles per hour

7.  Hurricanes are named to help us identify and track
them as they move across the ocean. For Atlantic
Ocean hurricanes, the names may be French,
Spanish or English, since these are the major
languages bordering the Atlantic Ocean where the
storms occur.

8.  Most hurricanes in North America hit areas near the
Atlantic Ocean and the Gulf of Mexico. The warm
water of the West Atlantic and the Gulf of Mexico
create more favorable conditions for hurricanes.

9.  The costliest hurricane to hit landfall was
Hurricane Katrina, a Category 5 storm that
slammed Louisiana in August of 2005.
Damages cost an estimated $91 billion.