Hurricane Allen

Hurricane Allen was the most powerful Atlantic hurricane by wind speed on record, tied with Hurricane Melissa of 2025. The second tropical depression and first named storm of the 1980 Atlantic hurricane season, Allen was also the seventh most intense Atlantic hurricane on record in terms of barometric pressure. It was one of the few hurricanes to reach Category 5 status on the Saffir–Simpson scale on three occasions, and spent more time at Category 5 status than all but two other Atlantic hurricanes. Until Hurricane Melissa in 2025, Allen was the only hurricane in the recorded history of the Atlantic basin to achieve sustained winds of 190 mph (305 km/h), and until Hurricane Patricia in 2015, these were also the highest sustained winds in the Western Hemisphere. Hurricane Allen was also the third-most intense tropical cyclone to exist in the Gulf of Mexico in terms of minimum central pressure, behind hurricanes Milton in 2024 and Rita in 2005.

Throughout its track, Allen moved through the deep tropics on a westward to northwestward course across the tropical Atlantic Ocean, Caribbean Sea, and Gulf of Mexico before making its final landfall near the United States–Mexico border. At peak strength, the hurricane passed near Haiti, causing hundreds of deaths and heavy damage. After crossing the Gulf of Mexico, Allen weakened as it struck the lower Texas coast, causing high winds, a significant storm surge, and heavy rainfall, which resulted in considerable damage to South Texas. Overall, Allen killed at least 281 people and left $1.57 billion in damages (1980 US dollars), mostly in Haiti and the United States. Due to the hurricane's impact, the name Allen was retired from the six-year revolving list of Atlantic tropical cyclone names in 1981 and replaced by Andrew. The remnants of the storm caused a brief lapse in the heat wave of 1980 in places like Dallas/Fort Worth, Texas, which had recorded 69 days of heat.

Meteorological history

Allen was an early-season Cape Verde-type hurricane, originating from a tropical wave that left the African coastline on July 30. The system developed quickly as it moved westward, becoming a tropical depression the following day. However, the National Hurricane Center did not initiate advisories on Allen until almost 24 hours later, when it was centered east of the Windward Islands. Early on August 2, as the depression moved quickly westward towards the Caribbean, it intensified into the first named storm of the 1980 Atlantic hurricane season. Allen rapidly strengthened as it continued westward. By the time an aircraft reconnaissance plane entered the tropical cyclone's center late on August 3, it had already achieved major hurricane status, with maximum sustained winds of and a minimum central pressure of , making Allen a Category 3 hurricane. The storm's central pressure dropped to that night as its eye passed north of Barbados on August 4. Another reconnaissance aircraft shortly thereafter discovered Allen had become an extremely strong Category 5 hurricane, with sustained winds of and a minimum pressure of the following day. This was the lowest central pressure ever recorded in the eastern Caribbean Sea. Allen maintained its extreme intensity for most of the day. However, late on August 5, the storm began to weaken as it underwent an eyewall replacement cycle and interacted with the mountainous terrain of Hispaniola, with the storm taking a northwestward jog south of the island, a common track deviation for most hurricanes that have passed through the area.

Allen resumed a more westward course as it left behind Hispaniola and passed north of Jamaica and the Cayman Islands on August 6. The very warm waters of the northwestern Caribbean Sea allowed the storm to begin another phase of rapid intensification. Allen reached its second and greatest peak intensity on the afternoon of August 7, with maximum sustained winds of and a minimum barometric pressure of . Hurricane warnings went into effect for Jamaica from around noon on August 5 until late in the afternoon of August 6. The Cayman Islands saw hurricane watches issued from the afternoon of August 5 into the morning of August 6 before the watches were upgraded to hurricane warnings from the morning until late afternoon of August 6.

In addition to the various watches and warnings put in place ahead of Allen's arrival, various international governments took measures to prepare for the hurricane in Haiti. A disaster committee and executive committee to address the aftermath of the storm was formed by Haitian President Jean-Claude Duvalier, the latter of which was headed by members of the Haitian Ministry of Health and Hatian Red Cross, while members of the committees included representatives from the army, Pan American Health Organization (PAHO), United States Agency for International Development (USAID), and others. Emergency instructions were issued by the Haitian government to prevent possible increases in malaria cases following Allen's passage. The United States government made preparations to send personnel, as well as financial and aerial assistance, to Haiti. In neighboring Cuba, over 200,000 people across seven provinces were evacuated.

Tens of thousands of people evacuated the Texas coast before Allen's landfall, and forecasters advised that all areas within one mile of the coastline be cleared. The American Red Cross opened 109 shelters across Hidalgo County and in the city of Corpus Christi. Access to Padre Island National Seashore was cut off, and all visitors there and residents of Galveston Island were ordered to evacuate the respective areas. Six thousand people in lower Cameron Parish, Louisiana, 14,000 people in Port Lavaca, and additional residents of the low-lying suburbs of Houston, Texas were ordered to evacuate as well. A total of 2,500 troops were put on alert in Texas prior to the storm's passage.

Impact

{| class="wikitable sortable" align="right"

|+ Deaths and damage by area

! Country !! Deaths !! Damage !! Source

| Barbados || None || ||

| Cayman Islands || None || ||

| Cuba || 3 || ||

| Dominican Republic || || ||

| Jamaica || || ||

| Offshore || || || The country's banana crop was devastated, and its main hospital, Victoria Hospital, was left powerless and with part of its roof missing. Much of St. Lucia's telephone lines and other communications were down due to the storm, and foreign governments communicated with the island via ham radio. Eighteen people lost their lives as a result of the storm's passage. One death in Guadeloupe was attributed to Allen. Torrential rainfall caused damage to agriculture on Saint Vincent. Offshore Jamaica, greater numbers of smaller-sized Damselfishes were witnessed in the wake of Allen. Much of the capital city Kingston was left without power. Wind speeds of occurred along Jamaica's northern coast where Allen made its closest approach to the island. Storm surge and strong waves along Jamaica's northeastern coast damaged buildings, and to inches of rainfall was recorded. Eight deaths in Jamaica occurred due to Allen. In all, 220 people were killed and 835,000 were left homeless by the catastrophic flooding and wind damage Allen caused in Haiti. Allen dumped of rain in south Texas along a 50 to 100 mile swath of land from the coast inland, ending a summer-long drought during the Heat Wave of 1980. The Nueces River peaked at , above flood level.

The storm caused seven deaths in Texas and 17 in Louisiana, most in the latter state resulting from the crash of a helicopter evacuating workers from an offshore oil platform. Allen spawned several tornadoes in Texas; a total of 34 were reported in association with the hurricane, 11 of which were rated F2. One tornado caused an estimated $50 million in damage when it hit an airport in Austin, Texas. Two offshore oil rigs in the Gulf of Mexico were destroyed by Allen, and 13 people died in the aforementioned helicopter crash during the evacuation of a rig. A total of $600 million in damage was recorded in Texas due to Allen. Overall, however, the storm caused less damage than initially feared in the United States due to its suddenly diminished power, as well as its highest tides and winds hitting a sparsely populated portion of the Texas coast.

Elsewhere

Areas of northeastern Mexico saw heavy rains with the passage of Allen, with the highest totals exceeding . The hurricane earlier brushed the Yucatán Peninsula. As Allen only affected sparsely populated regions of Mexico, there were no reports of significant damage. The Haitian Red Cross coordinated aid with other regional Red Crosses, needing supplies and food to support 50,000 people affected by Allen. US President Jimmy Carter declared six counties in southern Texas major disaster areas on August 11, allowing them to receive federal and state financing for cleanup from Allen. Seven American helicopters and 78 Americans assisted in the search for victims. The American Red Cross expected a $2 million expenditure for post-storm relief (as well as to shelter 136,000 evacuees during the storm's climax). Most hotels in southern Texas reported minimal damage from the storm and planned to resume normal operations not long after the storm dissipated. After various tankers were grounded in silt stirred up by the hurricane, the Federal Emergency Management Agency (FEMA) requested the Coast Guard to compile a list of all ships still at sea near southern Texas.

Retirement

Because of the hurricane's destructive impacts, the name Allen was retired from the Atlantic tropical storm name list by the World Meteorological Organization in the spring of 1981, and will never again be used for a future Atlantic hurricane. It was replaced with Andrew for the 1986 season.

Notes

References

External links

National Weather Service - Hurricane Allen
The Wake of Hurricane Allen in the Western Gulf of Mexico
Effects of Hurricane Allen on Buildings and Coastal Construction
Pertinent Meteorological Data for Hurricane Allen of 1980
KENS-TV (San Antonio) news footage from 1980 of the impact Allen had on Texas