Hurricane Carmen was the most intense tropical cyclone of the 1974 Atlantic hurricane season. A destructive storm with widespread impacts, Carmen developed from a tropical wave that emerged from Africa toward the end of August. The disturbance traveled westward, and organized as a tropical depression east of the Lesser Antilles on August 29. The storm moved through the Caribbean Sea, and in an environment conducive to intensification, it quickly strengthened to its initial peak intensity as a Category 4 hurricane on the Saffir–Simpson Hurricane Scale. Carmen moved ashore on the Yucatán Peninsula, where, despite striking a sparsely populated region, it caused significant crop damage and killed several people. Before the storm's arrival, officials had set up several evacuation centers, and many residents had moved to higher ground.
Upon entering the Gulf of Mexico, Carmen turned northward and re-intensified as it approached the United States. Initially threatening the major city of New Orleans, it veered westward and made landfall on the marshland of southern Louisiana, eventually dissipating over eastern Texas on September 10. Tropical cyclone watches and warnings had been issued for the storm, and approximately 100,000 residents left their homes and sought shelter. Damage was lighter than first feared, but the sugar industry suffered substantial losses. Throughout its course, the hurricane killed 8 people and caused $162 million in damage. Due to the severity of the storm, the name Carmen was retired from the list of Atlantic tropical cyclone names.
Meteorological history
The origins of Hurricane Carmen can be traced to a weather disturbance over Africa during the middle of August 1974. The disturbance moved slowly westward with little convective activity initially, although upon entering the Atlantic Ocean, it spawned a tropical wave within the Intertropical Convergence Zone. The wave had intensified and broadened by August 25, and it eventually split into two components, the northernmost of which consolidated into an organized storm system. Moving westward, the system developed into a tropical depression on August 29, more than east of Guadeloupe. Due to favorable outflow from an anticyclone nearby, the depression gradually strengthened as it moved through the Lesser Antilles. It attained tropical storm status on August 30, south of Puerto Rico, At first, the storm's proximity to Hispaniola prevented further strengthening, but by August 31, it had managed to intensify into a Category 1 hurricane on the Saffir–Simpson Hurricane Scale.
On September 1, the hurricane began to rapidly deepen over warm waters of the Caribbean Sea; by 18:00 Coordinated Universal Time (UTC), it had strengthened to Category 4 intensity. Carmen's forward movement gradually slowed as the storm took a west by north direction, and it reached its initial peak intensity with maximum sustained winds of 150 mph (240 km/h), accompanied by a central barometric pressure of 928 mbar (hPa; 27.4 inHg). Later on September 2, the hurricane made landfall on the Yucatán Peninsula; its northern jog spared Belize City from a direct hit. The storm's center passed a few miles north of Chetumal, Quintana Roo. Fearing significant loss of life and property, the Red Cross began preparations for the approaching hurricane in Belize.
Although it initially threatened the United States city of New Orleans, the hurricane turned west prior to making landfall and spared the area from severe damage. Over 100,000 residents of the Gulf Coast, mostly in Louisiana and Mississippi, evacuated in advance of the hurricane, causing heavy congestion on highways.
Hurricane warnings were issued along the coast, while Coast Guard personnel went door-to-door on Grand Isle urging residents to leave the area. From there through the coast of southwestern Florida, small craft were advised to remain near shore due to rough seas. Offshore, workers were removed from oil rigs. Many Mississippi citizens, having experienced the destruction of Hurricane Camille just five years earlier, quickly left their coastal homes.
Impact
As a tropical depression and storm, Carmen produced moderate rainfall across Puerto Rico and the northern Lesser Antilles, peaking at in Jájome Alto, Cayey, Puerto Rico. The storm spawned a tornado on Puerto Rico and triggered flash flooding, which collectively left over $2 million in damage. Heavy rain fell on Hispaniola as the storm progressed westward, and on Jamaica, the storm caused three drownings. High winds and heavy rainfall were reported there and in Cuba. The hurricane damaged local reefs on the north shore of Jamaica during its passage. In Louisiana, Carmen caused about $150 million damage, much of it was in crop damage. Also, there were five storm-related deaths in Louisiana. Freshwater and tidal flooding occurred there, and, to a lesser degree, in the other Gulf Coast states.
On account of the hurricane's landfall intensities and the widespread damage it caused, the name Carmen was later retired from the rotating lists of Atlantic hurricane names. It will never again be used to name a tropical storm in the Atlantic basin.
Yucatán Peninsula
thumb|right|200px|Radar image of Hurricane Carmen near landfall on September 2|alt=Radar image of Hurricane Carmen
Although Carmen made landfall as a powerful Category 4 hurricane, it caused significantly less damage than anticipated because it struck a sparsely populated region. However, torrential rainfall from the storm inundated farmland across the region, ruining rice crops. The fishing industry also sustained major losses. Communication with the hardest hit regions was lost following Carmen's passage; however, early reports stated that at least five people were injured. Several days later, officials in Mexico confirmed that three people had been killed by the storm. Sustained winds of 136 mph (217 km/h) were reported in the city of Chetumal, More than 5,000 people in the city lost their homes and belongings as a result of the storm. Officials in the area estimated that damage in Chetumal alone reached $8 million (1974 USD). Throughout the Yucatán Peninsula, Hurricane Carmen claimed four lives and wrought $10 million (1974 USD) in damage.
Following Carmen's passage, officials feared the worst for an area of 1,000 mi<sup>2</sup> (2,590 km<sup>2</sup>) where communication was lost in Belize. A reconnaissance task force was sent out from Belize City the day after Carmen made landfall to assist any residents stranded by the storm. One person was killed off the coast of Belize after being washed off his boat by large swells produced by Carmen. Three other fishermen were listed as missing following similar incidents. Thousands of people moved from coastal areas inland to escape the storm. Crop damage in the country was reportedly severe.
United States
Carmen dropped moderate rainfall along its path, though the heaviest rainfall occurred well to the east of the storm's center, in southern Alabama and the northern Florida Panhandle. Precipitation peaked at over in Atmore, Alabama. In New Orleans, despite wind gusts to , minimal damage was reported. The hurricane's effects in Baton Rouge were confined to strewn debris and a few downed trees. Because Carmen moved ashore over uninhabited marshland, it caused far less damage than initially feared. Nonetheless, tidal flooding from the Gulf of Mexico and coastal bodies of water was severe. Freshwater flooding was less extreme. In total, the storm inundated of land in Louisiana, including in Terrebonne Parish and in Plaquemines Parish. A large oak tree was overturned by high winds in the town of Jeanerette in Iberia Parish.
left|thumb|Rainfall map of the [[Gulf Coast|alt=Map of the southeastern United States showing rainfall amounts from Hurricane Carmen]]
The storm's greatest impact was the loss of sugar cane crops in Louisiana. An estimated of sugar cane in 16 parishes was damaged, and about 20 percent was completely ruined. After a tour of the affected area, then-Governor Edwin Edwards estimated crop damage alone at $400 million, although a more recent estimate placed total agricultural damage from the hurricane at $74 million. Other crops damaged by Carmen included soybeans, rice, and cotton.
The hurricane caused two fatalities in Louisiana: a utility repairman who was electrocuted while working on power lines damaged by strong winds, Total monetary losses in the state was estimated at $150 million. One touched down near Brandon, Mississippi, destroying a barn and causing other damage. Another struck Kaplan, Louisiana, injuring one person. The storm's effects in Mississippi were described as minimal and were mainly confined to minor traffic accidents during bouts of heavy precipitation. Light to moderate rainfall from the storm extended as far east as Florida and Georgia and as far west as Oklahoma and Texas.