What conditions made hurricane katrina so powerful

what conditions made hurricane katrina so powerful

Hurricane Katrina

Katrina’s maximum windspeeds at landfall near Grand Isle, LA may have been as high as mph. As Katrina moved further north and made a second landfall along the Mississippi/Louisiana border, the NWS Doppler Radar in Mobile (KMOB) measured winds up to mph between 3,, feet above ground level in the morning. It is estimated that % (approximately mph) of the maximum wind . Jan 17,  · Hurricane Katrina made landfall off the coast of Louisiana on August 29, It hit land as a Category 3 storm with winds reaching speeds as high as .

Hurricane Katrina was an extremely destructive Category 5 hurricane that affected the majority of the Gulf Coast. Its damaging trek began on August 23,when it originated as Tropical Depression Twelve near the Bahamas. The next day, the tropical depression strengthened to a tropical stormwhat causes inequality in society was named Katrina ; it proceeded to make landfall on what happened to puppies galore in charlton ma southern tip of the U.

In passing across Florida, Katrina did not attain any more strength but did manage to maintain hurricane status. After passing over Florida, the warm waters of the Gulf of Mexico allowed it to rapidly intensify to the sixth-strongest Atlantic hurricane in recorded history. Katrina progressed northward through the central United States and finally dissipated near the Great Lakes on August 31, when it was absorbed by a cold front. On August 19, a tropical wave merged with the remnants of Tropical Depression Tenthe surface low of which had dissipated earlier due to the effects of a nearby upper tropospheric trough.

On August 23,at how to cheat on omgpop pool. In a later re-analysis, it was determined that the low-level circulation of Ten had completely detached and dissipated, with only the remnant mid-level circulation moving on and merging with the aforementioned second tropical wave.

As a result, the criteria for keeping the same name and identity were not met. As the atmospheric conditions surrounding Tropical Depression Twelve were favorable for tropical developmentthe system began to intensify and was upgraded to Tropical Storm Katrina on the morning of August A burst of convection allowed Katrina to become the fifth hurricane of the season on August 25, only how to make scrabble tile art hours before it made landfall around p.

Katrina struck the peninsula with mile-per-hour kilometre-per-hour winds, and had a well-defined eye on NEXRAD weather radarwhich remained intact throughout its passage over Florida. Parts of the Florida Keys experienced tropical storm winds throughout August 26, with the Dry Tortugas briefly experiencing hurricane-force winds.

The initial National Hurricane Center forecasts predicted that Katrina would begin turning northward after landfall, eventually to hit the Florida Panhandle approximately three to four days later. Immediately after the storm entered the Gulf of What conditions made hurricane katrina so powerful, the low wind sheargood upper-level outflow, and the warm sea surface temperatures of the Gulf Loop Current caused Katrina to intensify rapidly.

On August 27, the storm was upgraded to Category 3 intensity, [5] becoming the third major hurricane of the season. An eyewall replacement cycle disrupted the intensification of maximum winds for about 18 hours, but almost doubled the radius of the storm.

CDT on August 27, and by a. CDT, [7] twelve hours after the beginning of the second round of rapid intensification, and reached its peak intensity at p.

By the afternoon of August 28, the storm was large enough that some areas of the Gulf Coast were already experiencing tropical storm-force winds. The center of Katrina was about statute miles km from the mouth of the Mississippi Riverbut tropical storm-force winds extended miles km from the center of the storm, and hurricane-force winds extended about miles km away.

The inner eyewall deteriorated before an outer eyewall had fully formed, playing an important role in the weakening. The waves then combined with the storm surge of the large Category 3 hurricane. Katrina made its second landfall at a. Because Katrina had just weakened from Category 4 and due to the shape of the coastline, sustained Category 4 winds likely existed on land while the eye was over water.

As it made its way up the eastern Louisiana coastline, most communities in PlaqueminesSt. Bernard Parishand Slidell in St. Original estimates indicated that Katrina had made this landfall as a Category 4 hurricane, with mile-per-hour kilometre-per-hour winds; [10] however, as indicated above, the storm weakened just before landfall to Category 3 intensity.

The reasons for how to set shutdown timer in windows 7 weakening are not completely understood; while the eye-wall replacement cycle played a part, slightly increasing sheardropping sea-surface temperatures, dry air on the western semicircle of the storm, and interaction with the continental landmass also may have played a role in weakening the cyclone.

A few hours later, after weakening slightly, Katrina made its third landfall near the Louisiana—Mississippi border with mile-per-hour kilometre-per-hour sustained winds and millibar Its minimum pressure at its second landfall was mbar 27 inHgmaking Katrina the fourth-strongest hurricane on record to make landfall on the United States, behind Hurricane Michael 's millibar Because the storm was so large, highly destructive eye-wall winds and the strong northeastern quadrant of the storm pushed record storm surges onshore, smashing the entire Mississippi Gulf Coast, including towns in Mississippi such as WavelandBay St.

The surges peaked at 28 feet 8. Louis, Mississippiand at 13 ft 4. As Katrina moved inland diagonally over Mississippi, high winds cut a swath of damage that affected almost the entire state. Katrina maintained hurricane strength well into Mississippibut weakened thereafter, losing hurricane strength more than miles km inland, near Meridian, Mississippi. It was downgraded to a tropical depression near Clarksville, Tennessee and broke in half.

On August 31, Katrina merged with a frontal boundary and became a powerful extratropical low, causing 1. The other half of Katrina broke off in the eastern part of the Appalachiansprimarily leading to a significant tornado outbreak in the area from central Georgia to central Pennsylvaniakilling two people and causing millions of dollars in additional damage. At p. EDT on August 31, the center of the remnant low of how to disable add ins was Katrina had been completely absorbed by a frontal boundary in southeastern Canada, with no discernible circulation.

From Wikipedia, the free encyclopedia. Meteorological history of a hurricane. See also: Hurricane Katrina effects by region. Play media. Tropical cyclones portal. December 20, National Hurricane Center. Retrieved Hydrometeorological Prediction Center. August 31, Archived from the original on September 22, Retrieved September 16, Canadian Hurricane Centre.

Archived from the original on Listen to this article 16 minutes. This audio file was created from a revision of this article dated 11 Juneand does not reflect subsequent edits. Hurricane Katrina. Disaster relief International response Media coverage Diaspora. Tropical cyclones of the Atlantic hurricane season.

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Download as PDF Printable version. Track of Hurricane Katrina. August 31, [1]. Extratropical after August Part of the Atlantic hurricane season.

Timeline of a Storm

Over the next two days the weather system gathered strength, earning the designation Tropical Storm Katrina, and it made landfall between Miami and Fort Lauderdale, Florida, as a category 1 hurricane (a storm that, on the Saffir-Simpson scale, exhibits winds in the range of 74–95 miles per hour [– km per hour]). Sustained winds of 70 miles per hour ( km per hour) lashed the Florida peninsula, . Jan 28,  · Katrina was massive before it even made landfall. Its hurricane-force winds reached 75 nautical miles east of the center. 5 ? Its maximum winds stretched 25 to 30 nautical miles. It forced the evacuation of 75% of the manned oil platforms in the Gulf . Aug 22,  · Katrina formed over the Bahamas on 23 August as a tropical depression, growing into a category one hurricane by the time it reached Florida but weakening to a .

Houses marked with an X still lie deserted in the most impoverished areas of New Orleans, 10 years on from the day Hurricane Katrina hit the city. One of the deadliest hurricanes to ever strike the United States, more than 1, people died in the storm and the flooding that followed, and more than a million people were left homeless in the Gulf Coast region.

Katrina formed over the Bahamas on 23 August as a tropical depression, growing into a category one hurricane by the time it reached Florida but weakening to a tropical storm once again. On 26 August, as Katrina moved over the Gulf of Mexico, its winds increased to kmh and it was upgraded back to a category one. A state of emergency was declared in Louisiana when the National Hurricane Center estimated Katrina's track could shift from the Florida panhandle to the Mississippi and Louisiana coastlines.

Katrina made landfall as a category three hurricane with kmh winds between Grand Isle, Louisiana and the mouth of the Mississippi River around 6am local time. The hurricane devastated the cities of Gulfport and Biloxi, in Mississippi, and the Gulf Coast of the state suffered near-total devastation on 28 and 29 August.

Hurricane winds, storm surges and sea waves more than 17m high slammed into the coast, before Katrina moved across coastal Mississippi and southern Alabama, eventually making landfall in Louisiana.

Several levees in New Orleans were breached and the city, of which roughly half stands above sea level, began to flood. After causing an astounding loss of life and damage to buildings including hospitals, businesses, schools and homes across Louisiana, Mississippi, Georgia, Alabama and the Florida panhandle, Katrina weakened to a tropical storm.

The hurricane killed people in all five states, but the overwhelming majority of deaths occurred in Louisiana — around 1, of the estimated more than 1, So why was Katrina so destructive in New Orleans?

When Katrina moved across the Gulf of Mexico, it was a category five hurricane with winds up to kmh — the highest and most dangerous rating on the Saffir-Simpson Hurricane Wind Scale. When it hit land in Louisiana, however, it had reduced to a category three with winds up to kmh, which is not the strongest hurricane to ever make landfall the Great Galveston Hurricane struck the Texan coast in September as a category four, killing between 8, and 12, people.

Yet New Orleans and the surrounding area suffered the brunt of Katrina's force. On 29 August, more than half of the 5,km of levees and flood walls protecting the city and its suburbs were breached, damaged or destroyed, allowing billions of litres of water to engulf the area. The United States Army Corps of Engineers, which had built the levees, said that they were not adequate for the strength of Katrina — but critics blamed the construction of the defences.

Engineers who criticised the levees said they were poorly reinforced and built on inadequate land, so when floodwater pushed against them they would give way. According to reports, other levees around the city were topped by floodwaters first before being breached. A preliminary report released in November by the University of California, Berkeley and the American Society of Civil Engineers said that many floodwall failures took place where sections joined together.

The poverty rate in New Orleans before Katrina was high, which is another contributing factor to the death toll. A significant number of poor households did not have a car, making evacuation before the disaster hit much more difficult. The evacuation plan was based on members of the public having their own means of transport. While the Superdome was declared a last-resort shelter, for many it was the only option.

Tens of thousands of displaced people were crowded into the venue — the poorest, mothers with children, the elderly, the disabled and tourists whose hotels had closed were stuck together in the humid heat — surrounded by human waste and drug paraphernalia.

There was no sanitation and little power. African Americans living in New Orleans made up a significant proportion of the hurricane's victims, making up roughly around one in three people who live in the areas hardest hit. Nearly half of the fatalities in the state were people over the age of 74, according to the Federal Emergency Management Agency. New Orleans is still recovering, and while people have moved back into rebuilt areas after the disaster, some of the city remains empty.

Much of the Lower Ninth Ward — levelled by the hurricane and floodwaters — remains uninhabited. But things are gradually turning around, thanks to the input from groups such as Lowernine. The Jazz Foundation of America has helped more than 1, New Orleans musicians and their families with its Housing and Emergency Assistance programme. While the population of New Orleans fell from around , in to an estimated , post-Katrina, a loss of around half of the city's residents, the population had risen to around , in It is clear the city's recovery is ongoing, but things are progressing — as shown by the city's growing tourism economy.

In , 3. The French Quarter has been repaired and the city boasts hundreds of hotels and vibrant restaurants selling local Creole and Cajun delicacies. The scars Katrina left behind are still visible, but life is slowly returning to normal. Hurricane Katrina 10 years on: Why was it so destructive?



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