Effects of Hurricane Katrina in Mississippi

Hurricane Katrina
Hurricane Katrina at landfall on the Louisiana-Mississippi border
Meteorological history
FormedAugust 29, 2005
DissipatedAugust 30, 2005
Category 3 major hurricane
1-minute sustained (SSHWS/NWS)
Highest winds120 mph (195 km/h)
Lowest pressure928 mbar (hPa); 27.40 inHg
Overall effects
Fatalities238 total
Damage$30 billion (2005 USD)
Areas affectedMississippi, particularly the Mississippi Gulf Coast

Part of the 2005 Atlantic hurricane season
Hurricane Katrina
2005 Atlantic hurricane season
General
Impact
Relief
Analysis
External links
  • Media related to Hurricane Katrina at Wikimedia Commons
  • Katrina stories at Wikinews
  • Works related to Katrina sources at Wikisource
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Hurricane Katrina's winds and storm surge reached the Mississippi coastline on the morning of August 29, 2005.[1][2] beginning a two-day path of destruction through central Mississippi; by 10 a.m. CDT on August 29, 2005, the eye of Katrina began traveling up the entire state, only slowing from hurricane-force winds at Meridian near 7 p.m. and entering Tennessee as a tropical storm.[3] Many coastal towns of Mississippi (and Louisiana) had already been obliterated, in a single night.[4] Hurricane-force winds reached coastal Mississippi by 2 a.m.[1] and lasted over 17 hours, spawning 11 tornadoes (51 in other states[2]) and a 28-foot (8.5 m) storm surge[2] flooding 6–12 miles (9.7–19.3 km) inland. Many, unable to evacuate,[5] survived by climbing to attics or rooftops, or swimming to higher buildings and trees. The worst property damage from Katrina occurred in coastal Mississippi, where all towns flooded over 90% in hours, and waves destroyed many historic buildings, with others gutted to the 3rd story. Afterward, 238 people died in Mississippi, and all counties in Mississippi were declared disaster areas, 49 for full federal assistance.[6][7] Regulations were changed later for emergency centers and casinos. The emergency command centers were moved higher because all 3 coastal centers flooded at 30 ft (9.1 m) above sea level. Casinos were allowed on land rather than limited to floating casino barges as in 2005.

More than one million people in Mississippi were affected, and almost 6 months later, the extent of the devastation in Mississippi was still described as "staggering" in USA Today on February 16, 2006:[8] "The Mississippi Gulf Coast has been devastated. The extent of the devastation in Mississippi is also staggering. Since Katrina hit, more than half a million people in Mississippi have applied for assistance from FEMA. In a state of just 2.9 million residents, that means more than one in six Mississippians have sought help.

Scattered damage

General: The effects of a hurricane can be scattered across a large area, because hurricanes are large complex storms which spawn smaller thunderstorms, tornadoes, storm surges, and sea waves. Wind speeds east of the eye can be 40–50 mph (64–80 km/h) higher than winds west of the eye. Wind gusts can be scattered, so boats or debris can ram one house but not another. One building can seem untouched, while others nearby are flattened; also trees can be partly weakened: tree limbs can fall months later, crashing onto a roof, automobile, fence, etc.

Specific: Because Hurricane Katrina became a massive storm,[3] [9] over 450 miles (720 km) wide, not only the eyewall-path, and 28-foot (8.5 m) storm surge, but also the outer bands of the hurricane arms caused scattered damage hundreds of miles away from the center. Eleven (11) spawned tornadoes were recorded in Mississippi (51 elsewhere).[2] It is possible that scattered damage to northern Mississippi occurred, by spin-off storms, around the time Katrina made landfall in eastern Greater New Orleans (Louisiana's "boot toe") and then, again, near Bay St. Louis, Mississippi, heading north-northeast into central Mississippi, at 10 a.m. on August 29.[3] Note that "landfall" occurred over towns submerged under 20 feet (6 m) of water. As buildings collapsed, water-tight appliances floated, sending refrigerators and dishwashers to ram other buildings and block streets.[9] Millions of homes and buildings were affected, along with ships, boats, and more than 40 offshore oil rigs.

Roadways and railways were put out of service by excessive amounts of debris and occasional collapse (most notably the I-10 Twin Span Bridge). Costs of debris removal in the Gulf Coast region is estimated at $200 million. Until major roadways (US 49, US 59) could be cleared, deliverers of supplies and other emergency relief were forced to detour through highway 609 or highway 43/603, though these routes were not officially posted.[10]

Impact synopsis

Damage to Long Beach, Mississippi following Hurricane Katrina
Figure KW10: Katrina Wind speed at 10 a.m. CDT, August 29, 2005: hurricane eye (central blue hub) a few miles to the west of Waveland, Mississippi.

The Gulf Coast of Mississippi suffered near total devastation[1][11][12] from Hurricane Katrina on August 29, with hurricane winds, 28-foot (8.5 m) storm surge, and 55-foot (17 m) sea waves[13] pushing casino barges, boats and debris into towns, and leaving 236 people dead, 67 missing, and billions of dollars in damages.[14] Katrina made landfall below central Mississippi, 30 miles (48 km) east of New Orleans at 6:10 a.m.,[3] the storm's powerful, right, front quadrant covered coastal Mississippi and southern Alabama, increasing wind and flood damage. After making initial landfall in Louisiana, four hours later Katrina made another landfall north at the state line (near the mouth of the Pearl River)[3] and passed over submerged towns around Bay St. Louis as a Category 3 hurricane with winds over 120 mph (190 km/h) and 28-foot (8.5 m) surge.[13] Battered by wind, rain and storm surges, some beachfront neighborhoods were leveled entirely, with flooding 6–12 miles (9.7–19.3 km) inland, crossing Interstate-10 (I-10) in some places.[15]

Winds reached hurricane-force in Hancock and Harrison County[1] by 2 a.m.,[16] and winds intensified. As Katrina passed 30 miles (48 km) east of central New Orleans, with 57 mph (92 km/h) winds, by 10 a.m., landfall in Mississippi increased hurricane-force winds in an area of 600,000 Mississippi residents, covering several counties (see Figure KW10: Katrina Wind Speed map): Hancock, Harrison, Jackson County, Pearl River County, Stone, Walthall, Marion, Lamar County, Forrest County, and Perry County (see Map of Counties). Other counties to see a strong hurricane force impact of Katrina were Covington County, Jefferson Davis County, Simpson County, Smith County, Hinds County, Rankin County, and Scott County. Katrina maintained a high wind capacity of 80–85 mph in cities like Mendenhall, Magee, Jackson, Brandon, and Forest in Mississippi. Those cities contained much tree damage, roof and patio damage, power line damage, and much thrown debris. In Jackson, streets were cleared off due to the intense strong winds and rains that carried throughout the entire day. During this 10 a.m. timeframe, hurricane-force winds continued over the barrier islands and Louisiana peninsula nearby; however, for the remainder of Louisiana, the winds were subsiding into gale-force winds after 10 a.m. when Katrina was becoming primarily a Mississippi hurricane.[17]

Map of Mississippi Counties, noting flood/severe damage areas (yellow shaded counties).

Several casinos, which were floated on barges to comply with Mississippi land-based gambling laws, were washed hundreds of yards inland by waves.[18] According to MSNBC, a 28-foot (8.5 m) storm surge came ashore wiping out 90% of the buildings along the Biloxi-Gulfport coastline. A number of streets and bridges were washed away, including the bridge sections of U.S. Highway 90. In particular, the roadway portion of the U.S. Highway 90 bridge between Bay St. Louis and Pass Christian was completely destroyed by the storm; only the support structure was left.

The three counties most affected by the storm were Hancock County, Harrison County, and Jackson County, although almost all counties had damage, and 47 counties were declared full disaster areas. Mississippi Emergency Management Agency (MEMA) officials also recorded deaths in Hinds, Warren, and Leake counties. About 800,000 people through the state experienced power outages, which is almost a third of the population.[19]

The three coastal counties of Mississippi, populated by about 400,000 people (almost the population of central New Orleans), had been mostly evacuated before Katrina flooded the 100-mile (160 km) region. Katrina's storm surge was the most extensive, as well as the highest, in the documented history of the United States; large portions of Hancock County, Harrison County,[1] and Jackson County were inundated by the storm surge, affecting most of the populated areas.[20] Surge covered almost the entire lower half of Hancock County, destroying the coastal communities of Clermont Harbor and Waveland, and much of Bay St. Louis, and flowed up the Jourdan River, flooding Kiln. In Harrison County, Pass Christian was completely inundated, along with a narrow strip of land to the east along the coast, which includes the cities of Long Beach and Gulfport; the flooding was more extensive in communities such as D'Iberville, which borders the Back Bay of Biloxi. Biloxi, on a peninsula between the Back Bay and the coast, was particularly hard hit, especially the low-lying Point Cadet area.

In Jackson County, storm surge flowed up the wide river estuary, with the combined surge and freshwater floods cutting the county in half. Over 90% of Pascagoula, the easternmost coastal city in Mississippi, was flooded from surge. Other Jackson County communities such as Porteaux Bay were destroyed, and St. Martin was hard hit, along with Ocean Springs, Moss Point, Gautier, and Escatawpa.

Two destroyers that were under construction at Litton-Ingalls Shipbuilding in Pascagoula were damaged, as well as the Amphibious assault ship USS Makin Island.

Surveying the damage the day after Katrina's passing, Mississippi governor Haley Barbour called the scene indescribable, saying "I can only imagine that this is what Hiroshima looked like 60 years ago."[21] The mayor of Biloxi, A.J. Holloway, told the Biloxi Sun Herald, "This is our tsunami."[22] Relief and rebuilding efforts initially focused on restoring power and clearing communities of debris up to eight feet (2.4 m) in depth.[23]

Many historic buildings were destroyed in Mississippi, including the cottages and second-story porches around the Beauvoir mansion, home of Jefferson Davis. Hundreds of irreplaceable Civil War-era artifacts from the Jefferson Davis home and museum were either lost or destroyed.

The lower three floors of many high-rise casinos and hotels were gutted. (See details below).

Along with countless others affected by the hurricane, U.S. senator Trent Lott lost his Pascagoula home, and the boyhood home of Green Bay Packers quarterback Brett Favre was also totally destroyed.

Psychological impact

Both the Mississippi residents who survived the hurricanes as well as the disaster relief workers who supported them are at high risk of developing Post-Traumatic Stress Disorder, or PTSD, a mental health disorder that can develop after exposure to an extreme situation such as warfare, a natural disaster or abuse.[24]

Path of Hurricane Katrina

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
circle Tropical cyclone
square Subtropical cyclone
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression