Hurricane Ivan was the 10th most intense Atlantic
hurricane ever recorded. The
cyclone formed
as a
Cape Verde-type
hurricane in early September and became the ninth named storm,
the sixth
hurricane, and the fourth
major hurricane of the year. Ivan reached
Category 5 strength on the
Saffir-Simpson Hurricane
Scale, the strongest possible category.
At its peak in the
Gulf of
Mexico
, Ivan was the size of the state of Texas
. It
also spawned 117 tornadoes across the eastern United States.
Ivan
caused catastrophic damage to Grenada
and heavy
damage to Jamaica
, Grand Cayman
, and the western tip of Cuba
.
After
peaking in strength, the hurricane moved north-northwest across the
Gulf of Mexico to strike Gulf Shores, Alabama
as a strong Category 3 storm, causing
significant damage. Ivan dropped heavy rains on the
Southeastern United States as it
progressed northeast and east through the eastern United States,
becoming an
extratropical
cyclone.
The remnant low from the storm moved into the
western subtropical Atlantic and regenerated into a tropical
cyclone, which then moved across Florida
and the Gulf
of Mexico into Louisiana
and Texas
, causing
minimal damage. Ivan caused an estimated
US$13 billion (2004 USD) in
damages to the United States, making it the sixth costliest
hurricane ever to strike that country.
Meteorological history
On
September 2, 2004, Tropical Depression Nine formed from a large
tropical wave southwest of Cape Verde
. As the system moved to the west, it
strengthened gradually, becoming Tropical Storm Ivan on September 3
and reaching hurricane strength on September 5, to the east of
Tobago
. Later that day, the storm intensified
rapidly, and by 5 p.m.
EDT (2100
UTC), Ivan became a
Category 3 hurricane with
winds of .
The National Hurricane Center said
that the rapid strengthening of Ivan on September 5 was
unprecedented at such a low latitude in the
Atlantic
basin
.
As it moved west, Ivan weakened slightly because of vertical
wind shear in the area.
The storm passed over
Grenada
on September 7, battering several of the Windward Islands as it entered the Caribbean Sea
. Ivan reintensified rapidly and became a
Category 5 hurricane just north of the Windward Netherlands
Antilles
(Curacao
and Bonaire
) and
Aruba
on September 9 with winds reaching .
Ivan
weakened slightly as it moved west-northwest towards Jamaica
. As
Ivan approached the island late on September 10, it began a
westward jog that kept the eye and the strongest winds to the south
and west. However, because of its proximity to the Jamaican coast,
the island was battered with hurricane-force winds for hours.
After passing Jamaica, Ivan resumed a more northerly track and
regained Category 5 strength.
Ivan's strength continued to fluctuate as
it moved west on September 11, and the storm attained its highest
winds of as it passed within of Grand Cayman
. Ivan reached its peak strength with a
minimum central pressure of 910
mbar
(
hPa) on September 12, making Ivan the
tenth most intense
Atlantic
hurricane on record, as of August 2007.
Ivan passed through
the Yucatán
Channel
late on September 13 while its eyewall affected the
westernmost tip of Cuba
.
Once over
the Gulf of
Mexico
, it weakened slightly to Category 4 strength,
which it maintained while approaching the Gulf Coast of the United
States.
Just before it made landfall in the United States, Ivan's eyewall
weakened considerably, and its southwestern portion almost
disappeared. Around 2 a.m.
CDT September 16 (0700 UTC), Ivan made
landfall on the U.S. mainland in Gulf Shores, Alabama
as a Category 3 hurricane with winds; some
hurricane information sources put the winds from Hurricane Ivan
near upon landfall in Alabama and northwestern Florida.
Ivan then
continued inland, maintaining hurricane strength until it was over
central Alabama
. Ivan weakened rapidly that evening and
became a tropical depression the same day, still over Alabama.
Ivan lost
tropical characteristics on September 18 while crossing Virginia
. Later that day, the remnant low drifted off
the U.S.
mid-Atlantic coast into
the Atlantic Ocean, and the low pressure disturbance continued to
dump rain on the United States.
On September 20, Ivan's remnant surface low completed an
anticyclonic loop and moved across the Florida
peninsula. As it continued west across the northern Gulf of Mexico,
the system reorganized and again took on tropical characteristics.
On September 22 the National Weather Service, "after considerable
and sometimes animated in-house discussion [regarding] the demise
of Ivan," determined that the low was in fact a result of the
remnants of Ivan and thus named it accordingly.
On the evening of
September 23, the revived Ivan made landfall near Cameron,
Louisiana
as a tropical depression. Ivan finally
dissipated on September 24 as it moved overland into Texas
.
Records
Ivan set several new records for intensity at low latitudes. When
Ivan first became a
Category 3 hurricane on
September 3 (1800 UTC), it was centered near 10.2 degrees
north. This is the most southerly location on record for a major
hurricane in the Atlantic basin. Just six hours later, Ivan also
became the most southerly Category 4 hurricane on record in
the Atlantic basin when it reached that intensity while located at
10.6 degrees north. Finally, at midnight (UTC) on September 9
while centered at 13.7 degrees north, Ivan became the most
southerly Category 5 hurricane on record in the Atlantic
basin.
Hurricane Felix nearly
matched this record in 2007, becoming a Category 5 hurricane
at 13.8 degrees north latitude.
Ivan had the world record of 33 (32 consecutive) six-hour
periods with an intensity at or above Category 4 strength.
This record was broken two years later by Pacific
Hurricane/Typhoon Ioke, which had 36 (33
consecutive) six-hour periods at Category 4 strength. This
contributed to Ivan's total ACE of 70.38, second only to the
1899 Hurricane San
Ciriaco.
Scientists from the Naval Research Laboratory at
Stennis
Space Center
, Mississippi
have used a computer model to predict that, at the
height of the storm, the maximum wave height within Ivan's eyewall
reached .
Preparations
In the
Caribbean, 500,000 Jamaicans
were told to evacuate from coastal areas, but only
5,000 were reported to have moved to shelters. Many schools and
businesses were closed in the Netherlands Antilles
, and about 300 people evacuated their homes on
Curaçao
. 12,000 residents and tourists were evacuated
from Isla
Mujeres
off the Yucatán Peninsula
.
In
Louisiana
, mandatory evacuations of vulnerable areas in
Jefferson, Lafourche
, Plaquemines
, St. Charles
, St. James
, St. John the Baptist
, and Tangipahoa
parishes took place, with voluntary evacuations
ordered in six other parishes. More than one-third
of the population of Greater New
Orleans evacuated voluntarily, including more than half of the
residents of New Orleans
itself. At the height of the evacuation,
intense traffic congestion on local highways caused delays of up to
12 hours.
About a thousand special-needs patients were
housed at the Louisiana
Superdome
during the storm. Ivan was considered a
particular threat to the New Orleans area because dangers of
catastrophic flooding. However, Plaquemines and St. Bernard
Parishes suffered a moderate amount of wind damage.
Hurricane preparedness
for New Orleans was judged poor. At one point, the media
sparked fears of an "
Atlantean" catastrophe
if the hurricane were to make a direct strike on the city. These
fears were not realized, as the storm's path turned further east.
The publicity generated may have contributed to the somewhat more
effective evacuation of the city in preparation for
Hurricane Katrina a year later,
however.
In
Mississippi
, evacuation of mobile
homes and vulnerable areas took place in Hancock
, Jackson
, and Harrison
counties. In Alabama
, evacuation in the areas of Mobile
and Baldwin
counties south of Interstate 10 was ordered, including a third
of the incorporated territory of the City of Mobile, as well as
several of its suburbs.
In
Florida, a full evacuation of the Florida Keys
began at 7:00 a.m. EDT September 10 but was
lifted at 5:00 a.m. EDT September 13 as Ivan tracked further west
than originally predicted.
Voluntary evacuations were declared in ten
counties along the Florida
Panhandle, with strong emphasis in the immediate western
counties of Escambia
, Santa Rosa
, and Okaloosa
.
Ivan prompted the evacuation of 270 animals at "
The Little Zoo That Could" in
Alabama. The evacuation had to be completed within a couple of
hours, with only 28 volunteers available to move the animals.
Impact
Ivan
killed 64 people in the Caribbean—mainly in Grenada
and Jamaica
—three in
Venezuela
, and 25 in the United States, including fourteen in
Florida
.
Thirty-two more deaths in the United States were indirectly
attributed to Ivan. Tornadoes spawned by Ivan struck communities
along concentric arcs on the leading edge of the storm.
In
Florida, Blountstown
, Marianna
, and Panama City Beach
suffered three of the most devastating
tornadoes. A Panama City Beach news station was nearly hit
by an
F2 tornado during the storm. Ivan
also caused over
US$13 billion in damages in the
United States and US$3 billion in the Caribbean
(2004 USD).
Southeastern Caribbean and Venezuela
Ivan
passed directly over Grenada
on September
7, 2004, killing 39 people. The capital, St.
George's
, was severely damaged and several notable buildings
were destroyed, including the residence of the prime
minister. Ivan also caused extensive damage to a local
prison, allowing most of the inmates to escape. The island, in the
words of a Caribbean disaster official, suffered "total
devastation." According to a member of the Grenadian parliament, at
least 85% of the small island was devastated. Extensive looting was
reported. In all, damage on the island totaled
US$815 million
(2004 USD).
Elsewhere
in the Caribbean, a pregnant woman was killed in Tobago
when a tree
fell on top of her home, and a 75-year-old Canadian woman drowned
in Barbados
. Three deaths were reported in Venezuela
. Over one-hundred fifty homes on Barbados and
around 60 homes in St. Vincent and the
Grenadines
were also reportedly damaged.
Jamaica
On
September 11 and September 12, the center of Ivan passed near
Jamaica
, causing
significant wind and flood damage. Looters were reported roaming the streets of
Jamaica's capital city, Kingston
(which appeared deserted), robbing emergency
workers at gunpoint. Overall, 17 people were killed in
Jamaica and 18,000 people were left homeless as a result of
the flood waters and high winds. Most of the major resorts and
hotels fared well, though, and were reopened only a few days after
Ivan had passed. Damage on Jamaica totaled
US$360 million
(2004 USD).
Cayman Islands
the
Cayman
Islands
, Governor
Bruce
Dinwiddy described damage as "very, very severe and
widespread." Despite strict building codes which made the islands'
buildings well able to withstand even major hurricanes, Ivan's
winds and storm surge were so strong that a quarter or more of the
buildings on the islands were reported to be uninhabitable, with
85% damaged to some extent.
Much of Grand Cayman
still remained without power, water, or sewer
services for several months later. After five months, barely
half the pre-Ivan hotel rooms were usable. Only two people were
killed on the islands, though at first many deaths were suspected
because of the many graves that were washed up during the storm.
The damage totaled
US$1.85 billion (2004 USD) in
the Cayman Islands.
Rest of the Caribbean
There
were four deaths in the Dominican Republic
. The region's Caribbean Development Bank
estimates Ivan caused over US$3 billion (2004 USD)
damage on island nations, mostly in the Cayman Islands
, Grenada
, and
Jamaica
.
Minor
damage, including some beach erosion, was reported in the ABC
islands
.
Even
though Ivan did not make landfall on Cuban
soil, its
storm surge caused localized flooding on Santiago de
Cuba
and Granma, on the
southern part of the island. At Cienfuegos
, the storm produced waves of , and Pinar del
Río
recorded of rainfall. While there were no
casualties on the island, the Cuban government estimates that about
US$1.2 billion (2004 USD) of property damage were
directly due to Ivan.
United States
Along
with the 14 deaths in Florida
, Ivan is
blamed for eight deaths in North Carolina
, two in Georgia
, and one in Mississippi
. An additional 32 deaths were reported
as indirectly caused by the storm.
Ivan caused an estimated
US$13 billion (2004 USD) in
damage in the United States alone, making it the third costliest
hurricane on record at the time, being very near
Hurricane Charley's US$14 billion but
well below
Hurricane Andrew's
US$26 billion. Ivan displaced
Hurricane Hugo, which had previously held the
third spot, but in 2005,
Hurricane
Katrina caused US$81 billion in damage, displacing Ivan to
fourth place, and
Hurricane Wilma
caused US$20.6 billion in damage, displacing Ivan again to
fifth place, and in 2008, Ivan was surpassed by another storm,
Hurricane Ike which caused upwards of
$27 billion in damages.
Florida
In
Florida there was heavy damage as Ivan made landfall on the U.S.
coastline was observed in Pensacola
, Pensacola Beach,
dwellings situated far inland, as much as 20 miles from the Gulf
coast, along the shorelines of Escambia
Bay, East
Bay
, Blackwater Bay, and
Ward Basin in Escambia County
and Santa Rosa
County, and Fort Walton Beach, Florida
on the eastern side of the storm.
The area
just west of Pensacola, including the community of Warrington
(which includes Pensacola
NAS
), Perdido
Key
, and Innerarity Point, took the brunt of the
storm. Some of the subdivisions in this part of the county
were completely destroyed, with a few key roads in the Perdido area
only opened in late 2005, over a year after the storm hit.
Shattered windows from gusts and flying projectiles experienced
throughout the night of the storm were common. As of December 2007,
roads remained closed on Pensacola Beach because of damage from
Ivan's storm surge.
In Pensacola, the
Interstate 10 bridge
across
Escambia Bay was heavily
damaged, with as much as a quarter-mile (400 m) of the bridge
collapsing into the bay. The causeway that carries
U.S. Highway
90 across the northern part of the same bay was also heavily
damaged. Virtually all of Perdido Key, an area on the outskirts of
Pensacola that bore the brunt of Ivan's winds and rain, was
essentially leveled. High surf and wind brought extensive damage to
Innerarity Point.
On September 26, 2006, over two years after Ivan struck the region,
funding for the last 501
FEMA-provided
trailers ran out for those living in Santa Rosa and Escambia
counties.
Alabama
The city
of Demopolis
, over inland in west-central Alabama
, endured wind gusts estimated at , while Montgomery
saw wind gusts in the to range at the height of the
storm.
The
heaviest damage as Ivan made landfall on the U.S. coastline was
observed in Baldwin County
in Alabama, where the storm's eye (and eyewall)
made landfall. High surf and wind brought extensive damage
to Orange
Beach
near the border with Florida. There, two
five-story condominium buildings were undermined to the point of
collapse by Ivan's storm surge of . Both were made of
steel-reinforced concrete. Debris gathered in piles along the storm
tide, exaserbating the damage when the floodwaters crashed into
homes sitting on pilings.
Brewton
, a community about inland, also suffered severe
damage.
In addition to the damage to the southern portions of the state,
there was extensive damage to the state's electrical grid. At the
height of the outages,
Alabama Power
reported 489,000 subscribers had lost electrical power—roughly
half of its subscriber base.

Ivan Rainfall in the United
States
Rest of the United States
Further
inland, Ivan caused major flooding,
bringing the Chattahoochee River
near Atlanta
and many other rivers and
streams to levels at or near 100-year
records. The
Delaware River
and its tributaries crested just below their all-time records set
by
Hurricane Diane in 1955.
Locations
in southern New
Hampshire
and
Massachusetts
received over 7 inches of rainfall from the
remnants of Ivan, causing flooding and mudslides.
In
Western North
Carolina
, many
streams and rivers reached well above flood stage in an area that
was heavily flood damaged just a week and a half before from the
remnants of Hurricane Frances,
causing many roads to be closed. The Blue Ridge
Parkway
as well as Interstate
40 through the Pigeon River gorge
in Haywood
County, North Carolina
, sustained major damage, and landslides were common
across the mountains. As a result of the rain, a major debris flow
of mud, rocks, trees, and water surged down Peek's Creek, near Franklin,
North Carolina
, sweeping away 15 houses and killing five
people.
The
system also spawned deadly tornadoes as far
north as Maryland
and destroyed seven oil platforms in the Gulf of Mexico
while at sea. While crossing over
the Mid-Atlantic states, Ivan's remnants spawned 117 tornadoes
across the eastern United States, with the 40 tornadoes
spawned in Virginia
on September 17 setting a daily record for the
commonwealth. Ivan then moved into the Wheeling,
West Virginia
and Pittsburgh
area, causing major flooding.
Pittsburgh
International Airport
recorded the highest 24-hour rainfall for
Pittsburgh, recording of rain. Ivan's rain caused widespread
flooding. The
Juniata River basin was
flooded, and the Frankstown Branch crested at its highest level
ever.
After Ivan regenerated in the Gulf of
Mexico, it caused further heavy rainfall up to in areas of Louisiana
and Texas
.
Canada
On the morning of September 21, the remnant mid-level circulation
of Ivan combined with a frontal system.
This produced a plume
of moisture over the Canadian
Maritimes for four days, producing heavy rainfall totaling in
Gander,
Newfoundland
. High winds of up to downed trees and caused
power outages in Newfoundland
, Prince Edward Island
, and eastern Nova Scotia
. The system produced intense waves of up to
near Cape
Bonavista
.
The system killed two when it grounded a fishing vessel and was
indirectly responsible for four traffic fatalities in
Newfoundland.
Aftermath
Grenada
Grenada
suffered
serious economic repercussions following the destruction caused by
Ivan. Before Ivan, the economy of Grenada was projected to
grow by 4.7%, but the island's economy instead contracted by nearly
3% in 2004. The economy was also projected to grow by at least 5%
through 2007, but, , that estimate had been lowered to less than
1%. The government of Grenada also admitted that
government debt, 130% of the island's
GDP, was "unsustainable" in
October 2004 and appointed a group of professional debt advisors in
January 2005 to help seek a cooperative restructuring agreement
with creditors.
More than
US$150 million
was sent to Grenada in 2004 to aid reconstruction following Ivan,
but the economic situation remains fragile.
The International Monetary Fund
reports that as "difficult enough as the
present fiscal situation is, it is unfortunately quite easy to
envisage circumstances that would make it even more so."
Furthermore, "shortfalls in donor financing and tax revenues, or
events such as a further rise in global oil prices, pose a grave
risk."
United States
Ivan is
suspected of bringing spores of soybean
rust from Venezuela
into the United States, the first ever occurrences
of soybean rust found in North America. Since the Florida
soybean crop had already been mostly harvested, economic damage was
limited. Some of the most severe outbreaks in South America have
been known to reduce
soybean crop yields by
half or more.
Retirement
This storm also marked the third occasion the name "Ivan" had been
used to name a tropical cyclone in the Atlantic, as well as the
fourth of five occurrences worldwide.
Because of the severe
damage and deaths in the Caribbean and United States, the name Ivan
was retired in the spring of 2005 by the World Meteorological
Organization and will never again be used in the Atlantic
basin
. It was replaced by Igor for the 2010
season.
Hydrological records
Ivan broke several
hydrological
records; it is credited with possibly causing the largest
ocean wave ever recorded, a 91 foot
(27 meter) wave that may have been as high as 131 ft
(40 m), and the fastest seafloor current, at
2.25
m/s (5 mph).
See also
References
- Stacey R. Stewart. Tropical
Cyclone Report for Hurricane Ivan. Retrieved on
2008-02-01.
- National Hurricane Center.
Hurricane Ivan Discussion 14. Retrieved on
2008-02-01.
- National Hurricane Center.
Hurricane Ivan Discussion 17. Retrieved on
2008-02-01.
- National Hurricane Center's
Tropical Depression IVAN Special Discussion Number
67, September 22 2004
- National Hurricane Center.
Atlantic Hurricane Track Database. Retrieved on
2008-02-01.
- National Hurricane Center.
Hurricane Felix Tropical Cyclone Report.
Retrieved on 2008-02-01.
- National Climatic Data Center.
Climate of 2004: Atlantic Hurricane Season.
Retrieved on 2008-02-01
- U.S. Naval Research
Laboratory. NRL Measures Record Wave During Hurricane Ivan.
Retrieved on 2008-02-01.
- Natural Hazards Observer (November 2004). What if Hurricane Ivan Had Not Missed New
Orleans? Retrieved on 2008-02-03.
- USA Today.
Direct hit by Ivan in New Orleans could mean a
modern Atlantis. Retrieved on 2004-09-14.
- CNN. Ivan's stormy trek floods Southeast. Retrieved
on 2004-09-16.
- Video of the tornado
- Associated Press. Cuba mostly
spared Ivan's wrath. Retrieved on 2004-09-15.
- United States Department of
State. U.S. Gives Jamaica $450,000 for School Equipment
and Supplies. Retrieved on 2005-02-16.
- Caribbean Disaster Emergency Response Agency. News Conference Report: Tourism impact on the Caribbean by
Hurricanes Frances, Ivan, Jeanne. Retrieved on 2004-09-30.
- Franklin Hayes. Elderly Left Homeless by FEMA Deadline.
Retrieved on 2008-02-03.
- National Weather Service Forecast
Office, Birmingham, Alabama. Hurricane Ivan...September 2004. Retrieved on
2008-02-03.
- Timothy P. Marshall. Hurricane Ivan Damage Survey. Retrieved on
2008-02-01.
- Dnet Web Services. Peeks
Creek Photos. Retrieved on 2008-02-01.
- North Carolina Geological Survey. Landslides. Retrieved on 2008-02-01.
- The Washington Times. Maryland women die in Ivan's wake. Retrieved
2004-09-19.
- Virginia Department of Emergency Management. Virginia's Weather History: Virginia Tornadoes.
Retrieved on 2008-02-03.
- National Weather Service Forecast
Office, Pittsburgh, PA. NWS
Pittsburgh Hourly Climate Data Archive, August, 2004. Retrieved
on 2008-02-01.
- Pennsylvania Emergency Management Agency. Ivan Flooding Situation Reports: September 28,
2004, Situation Report #15. Retrieved on 2008-02-01.
- United States Department of
State. Grenada Making Comeback from Hurricane Ivan.
Retrieved on 2005-02-24.
- Florida Department of Agriculture and Consumer Services.
Soybean Rust Confirmed In Florida. Retrieved on
2004-11-17.
- NOAA. The Retirement of Hurricane Names. Retrieved on
2008-02-12.
- National Hurricane Center.
Worldwide Tropical Cyclone Names. Retrieved on
2008-02-12.
External links