LEAVE A COMMENT – CLICK THE CLOUD ABOVE
After decades of relative inactivity in the Atlantic basin, Hurricane Andrew marked the first time in modern history that a Category 4 or Category 5 hurricane had directly threatened a large American city. As people across the country watched, the tightly wound storm took aim on downtown Miami. On August 23rd, 1992, journalists and camera crews positioned themselves in iconic areas throughout the city. By 1am on August 24th, winds were howling across Dade County. Employees at the National Hurricane Center, then located in Coral Gables, had the dual task of monitoring the storm and protecting themselves as windows shattered in the upper floors of their building.
At the break of dawn, the eye of the storm was entering the Gulf of Mexico and the winds across Dade County had begun to die down. Daylight revealed extensive damage across the city of Miami and Coral Gables. Strangely, however, there was little word from areas farther south. A last minute dip in the storm’s path meant that the urbanized areas south of Miami, from Kendall to Florida City, had taken the brunt of the storm. Despite the widespread use of video cameras in the early 90’s, no clear footage exists of the storm at its height. Nearly all of the videos taken south of 152nd Street end abruptly at 4am.
News helicopters and emergency crews quickly realized the extent of the damage. Cities to the south of Miami had taken the full force of the Category 5 hurricane, leaving tens of thousands of people homeless. Nearly everyone who lived south of 152nd Street seemed to agree that “something unusual happened” between 4am and 6am the morning of August 24th. In the words of one Homestead resident –“I’ve been through plenty of hurricanes, and all of them together was nothing compared to this.”
Hurricane Andrew’s right front quadrant came ashore in the vicinity of Cutler. As would be expected, the maximum storm surge of 17ft occurred in this area. Due to the storm’s fairly rapid forward speed, the most extreme winds should have occurred along the immediate coastline of Cutler and East Perrine. And indeed, the damage was astounding. Trees in the area were stripped bare, and some homes near the shoreline were unroofed and partially leveled by wind gusts in excess of 175mph. The Pinewood Villas, a one-story apartment community in Cutler Ridge, experienced some of the most severe wind damage in the area. Several apartment buildings in the complex were completely leveled, and the remaining units suffered extensive internal damage as doors were ripped from their hinges. Professor Fujita toured the damage at the Pinewood Villas and noted the inconsistent nature of the destruction, which was reminiscent of the narrow streaks of damage left by tornadoes.
A little farther inland in Cutler, the hurricane punched through the windows and walls of large retailers and completely gutted a two-story furniture store. Due to Andrew’s incredible power and brisk westward motion, areas well inland were affected by wind gusts over 150mph. The Tamiami Airport, located 10 miles from the coast, suffered tens of millions of dollars in damage. Airplanes were flipped and rolled into piles, and the airport’s hangars were shredded to their metal frames.
During the storm, even though routine weather observations had ceased operation, the official weather observer at the airport continued to keep track of the station’s wind dial. Around 4:45am, he noted that the needle became pegged at a position beyond the instrument’s peak value (later shown to be a bit over 120mph). The needle remained fixed at this point for three to five minutes before dropping to zero as the anemometer failed. The weather observer reported that the winds increased in intensity for another 30 minutes, so it is quite likely sustained winds well over 120mph affected the Tamiami Airport (NHC, 1992).
Andrew was a rather fast moving storm, so winds in the northern half of the eyewall should have been more than 35mph stronger than winds in the southern eyewall. Despite the destruction in Cutler and Perrine, however, even more intense damage was found farther south. Arguably the most severe wind damage caused by the hurricane was four miles inland in Naranja Lakes, a small community just north of Homestead. The devastation was unusual because the area was near the geographic center of the storm’s path, well away from the onshore winds that affected Cutler Bay. Even more unusual, survivors in Naranja Lakes and Homestead told surveyors that the most extreme winds occurred during the back-eyewall of the hurricane. One woman in Naranja Lakes was fatally injured as her home was destroyed by southerly winds following the passage of the eye.
Radar views of the hurricane provided some clues as to why its southern eyewall caused such incredible damage in Naranja Lakes, Homestead and Florida City. The Miami radar failed as the leading edge of Andrew’s eyewall came ashore, and the Key West radar ceased functioning when the power went out across the region, so no radars within 200 miles of Homestead captured the hurricane as it crossed the coastline. Radar in Tampa, however, was able to fill in the gap, though with slightly less detail due to its distance. As the hurricane came ashore, radar images showed powerful convection cells forming over Homestead and nearby areas in the storm’s southern eyewall. It is likely these dense cells of precipitation led to extremely intense bursts of wind that may have reached 200mph.
The winds that affected Homestead, Florida City and Naranja Lakes were like nothing that has ever been filmed before. Deep convection in Hurricane Andrew’s southern eyewall likely led to near complete white-out conditions during the peak of the storm. Survivors described the roar of the storm as being so loud that “you could barely hear someone screaming next to you.” Lisa Frantz, a Los Angeles resident who survived the storm in her mother’s home in Florida City, described the impact of the storm:
The whole home shook as if it was going to be ripped from the ground. We could hear furniture banging against the walls and being blown out the windows. You could hear some of the gusts right before they hit – it sounded like jet planes were taking off right over us…I was sure we both were going to die.
Unlike most US hurricanes, the majority of Hurricane Andrew’s deaths were caused by its winds. Falling trees are generally the biggest killer, but the deaths in South Florida were more consistent with tornado-related fatalities. Half of the 15 deaths directly attributed to the storm occurred in the collapse of frame homes or apartment buildings. Additionally: two men sheltering together in a metal storage trailer west of the Tamiami Airport were killed when the container was flipped several times. One man, who was also more than 12 miles inland on SW 198th Street, was killed by flying debris while running for shelter after the building he had been in collapsed. Two more deaths occurred in two separate mobile homes that were obliterated. Only one of the deaths was the result of drowning. (Natural Disaster Survey Report, 1993). A third of the deaths occurred more than 10 miles inland.
Extensive research in the decade following the storm concluded that Hurricane Andrew was significantly stronger than previously estimated (the official intensity at landfall in Homestead was originally 145mph). In 2002, the hurricane was posthumously upgraded to a Category 5 with maximum sustained winds of 175mph. At landfall in Homestead, the storm’s winds are now estimated to have been 165mph, even though the storm’s lowest pressure of 922mb was recorded at this time. The complicated and isolated nature of the wind features in Hurricane Andrew make a single intensity estimate almost impossible to calculate.
Hurricane Andrew remains one of only two Category 5 hurricanes to ever make landfall in the United States.* The storm redefined the concept of a hurricane to a whole new generation and left lasting scars in South Florida that are still visible 20 years later. More than anything, the storm highlighted the continued discrepancies that exist between National Hurricane Center estimates and the actual surface conditions in landfalling hurricanes.
*Hurricane Camille’s official landfall intensity of 190mph, according to many objective sources, is inaccurate. The storm was very likely under Category 5 intensity when it crossed the Mississippi coastline.