# 1906 Atlantic hurricane season

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The 1906 Atlantic hurricane season was an average season in terms of number of tropical cyclones. It is, however, also considered an extremely active season in terms of accumulated cyclone energy, due to the strength and longevity of several of its hurricanes. It featured twelve tropical cyclones, eleven of which became tropical storms, six became hurricanes and three became major hurricanes. The first storm of the season, a tropical storm in the northern Caribbean, formed on June 8; although it struck the United States, no major impacts were recorded. July saw a period of inactivity, with no known storms. However, in August, the streak of inactivity ended with two storms, including a powerful hurricane. September brought three storms, including a deadly hurricane, with catastrophic impacts in Pensacola and Mobile. October included three storms, with a powerful hurricane that killed over 200 people. The final storm of the season impacted Cuba in early November and dissipated on November 9. The season was quite deadly, with at least with 381 total recorded deaths.

## Season summary

Prior to the advent of modern tropical cyclone tracking technology, notably satellite imagery, many hurricanes that did not affect land directly went unnoticed, and storms that did affect land were not recognized until their onslaught. As a result, information on older hurricane seasons was often incomplete. Modern-day efforts have been made and are still ongoing to reconstruct the tracks of known hurricanes and to identify initially undetected storms. In many cases, the only evidence that a hurricane existed was reports from ships in its path, and judging by the direction of winds experienced by ships, and their location in relation to the storm, it is possible to roughly pinpoint the storm's center of circulation for a given point in time. This is the manner in which all of the eleven known storms in the 1906 season were identified by hurricane expert José Fernández-Partagás's reanalysis of hurricane seasons between 1851 and 1910. Partagás also extended the known tracks of three other hurricanes previously identified by scholars. The information Partagás and his colleague uncovered was largely adopted by the National Oceanic and Atmospheric Administration's Atlantic hurricane reanalysis in their updates to the Atlantic hurricane database (HURDAT), with some slight adjustments. HURDAT is the official source for such hurricane data as track and intensity, although due to a sparsity of available records at the time the storms existed, listings on some storms are incomplete.
The season's activity was reflected with an accumulated cyclone energy (ACE) rating of 163, the highest total since 1893. ACE is a metric used to express the energy used by a tropical cyclone during its lifetime. Therefore, a storm with a longer duration will have high values of ACE. It is only calculated at six-hour increments in which specific tropical and subtropical systems are either at or above sustained wind speeds of 39 mph (63 km/h), which is the threshold for tropical storm intensity. Thus, tropical depressions are not included here.

## Systems
### Tropical Storm One

The first storm of the season formed on June 8, south of western Cuba, attaining its peak winds of 50 mph (80 km/h) by June 9. On June 10, a weather station in Havana reported a minimum air pressure of 1002 mbar (hPa; 29.59 inHg); however, the minimum pressure of the system itself is unknown. On June 12, the system caused the sinking of a schooner; however, all on board the schooner were rescued. The system continued traveling north-northwestward, making landfall near Panama City on June 13, quickly weakening to a tropical depression as it moved inland. The system became extratropical by June 14, dissipating shortly thereafter; no deaths and injuries are known to have been caused by the storm.

### Hurricane Two

This first hurricane of the season's effects were first noted in Santa Clara, Cuba, where rainy and windy conditions were observed on the afternoon of June 14. Several vessels sank during the hurricane during the early morning hours of June 15. The system was thought to have entered the Florida Straits during the evening. The system began to travel towards the west-northwest, steadily strengthening into a hurricane by the afternoon. On June 17, a minimum pressure of 979 mbar (hPa; 28.91 inHg) was recorded, as the hurricane passed over southern Florida.
The hurricane slowly intensified as it traveled offshore, continuing to strengthen throughout the day on June 17, eventually reaching Category 2 status by June 18. As the storm headed northeastward, the hurricane began to weaken, becoming a tropical storm by June 21. The system turned toward the east-southeast on June 21, later recurving towards the east-northeast on June 22. It weakened to a tropical depression by June 23, transitioning into an extratropical cyclone later that day. Impacts caused by the hurricane were minimal—a boat was partially dismantled at Key West, and a wharf at Coconut Grove was also damaged. In addition, the schooner Hidie Feroe sank, although her crew was later rescued.

### Tropical Storm Three

This tropical storm was previously unidentified until modern research by José Fernández-Partagás revealed the storm in 1997. The tropical storm is believed to have originated as a tropical depression in the North Atlantic on August 22. By August 23, the depression had intensified into a tropical storm, with winds of 40 mph (65 km/h). The system further intensified into a powerful tropical storm on August 24, with winds of 70 mph (115 km/h). However, the storm began to weaken, and it transitioned into an extratropical storm on August 25, with winds of 60 mph (95 km/h).

### Hurricane Four

The fourth storm of the season was believed to have originated as a tropical storm off the coast of Africa on August 25. The storm slowly intensified, eventually reaching hurricane status on August 28. As the storm headed west-northwestward on August 31, it passed by the Lesser Antilles as a Category 2 hurricane. The storm became a Category 3 hurricane on September 2 as it passed north of the Dominican Republic. The storm further intensified into a Category 4 hurricane on September 5, located east of the Bahamas. Throughout the day on September 6, the hurricane began to curve northward. During the evening, it weakened to Category 3 status and began to travel northeastward on September 7.
The hurricane maintained its intensity and passed northwest of Bermuda on September 9, where winds reached 70 mph (115 km/h) and air pressures fell to 988 mbar (hPa; 29.18 inHg). The storm continued to weaken, eventually becoming a Category 2 hurricane on September 11; at this time, the Koenigin Luise measured an air pressure of 950 mbar (hPa; 28.06 inHg). The system became extratropical later during the day, and lost its identity on September 12 in the North Atlantic near the British Isles. As a result of warnings in advance, little damage was caused by the hurricane.

### Hurricane Five

The fifth storm of the season formed on September 3 in the western Atlantic. It drifted west-northwestward, slowly gaining intensity, and turned northwest on September 8. However, the tropical storm then changed course and began to head west-northwest on September 11 as it slowly intensified. By September 12, the tropical storm had intensified to a minimal hurricane, and began to turn towards the north-northwest on September 13. It attained its peak winds of 90 mph (145 km/h) on September 14. As it maintained its intensity on September 15, the hurricane began to turn westward while it continued to approach the coast of South Carolina on September 17. The hurricane made landfall near Myrtle Beach later on September 17, and quickly weakened to a tropical storm as it moved inland. The storm dissipated as a tropical depression on September 18 over Tennessee.
The hurricane caused moderate impacts — two hundred people were stranded at Wrightsville Beach, North Carolina. At Charleston, South Carolina, winds of 46 mph (74 km/h) were recorded, in addition to a barometric pressure of 997 mbar (hPa; 29.44 inHg). Many small buildings were damaged in Charleston; damage in the city totaled to $1,000, while at the town of Georgetown, damage was estimated to be around $15,000. The Laura encountered the hurricane, and three of the crew of four were killed. A schooner called the Seguranca and its crew were also impacted by the hurricane; the crew on board survived without food for two days. Overall damage to shipping and crops in the Carolinas was moderate; seven people were killed, and at least $2,016,000 (1906 USD) in damage was recorded.

### Hurricane Six

The Mississippi Hurricane of 1906
The sixth hurricane of the season originated as a tropical depression on September 19 in the southwestern Caribbean Sea. The following day, the depression intensified into a tropical storm. It continued to intensify steadily, eventually reaching hurricane status on September 24 as it exited the Yucatán Channel. The hurricane continued to intensify as it moved north-northwest and attained Category 2 intensity in the Gulf of Mexico. During the afternoon, the storm intensified further into a major hurricane. At this time, the hurricane was 300 miles (485 km) west-northwest of Cuba. The hurricane maintained intensity and continued to drift north-northwest, and weakened to a Category 2 hurricane as it made landfall near Pascagoula, Mississippi, on September 27. The hurricane weakened as it moved inland, quickly weakening to a tropical storm by September 28. The storm became extratropical on September 29.
The hurricane caused severe damage along the Gulf Coast. Many marine vessels were blown ashore or sunken in Pensacola, and railroads in the city were severely damaged. Numerous wharfs were damaged or destroyed, and many roofs were torn off buildings. Three forts in the vicinity of Pensacola suffered damage. Electricity in the city was shut off. A total of 25 people were killed in Pensacola. Mobile and surrounding areas suffered similar damage, including destroyed timber, smashed windows, and sunken watercraft. In Mississippi, over 300,000 cotton bales were ruined during the hurricane, amounting to $12,000,000 in damage. Damage in New Orleans was minimal; however, Lake Pontchartrain overflowed, flooding the city. The hurricane killed a total of 134 people.

### Tropical Storm Seven

This tropical storm was previously unidentified and was not considered a tropical storm until research by José Fernández-Partagás in 1997. The storm is believed to have originated west of the Canary Islands in the northeastern Atlantic on September 22. The tropical storm moved west-southwestward for several days, maintaining its peak winds of 70 mph (115 km/h); however, the storm began to curve early on September 26 and traveled directly westward before curving northward during the afternoon. The tropical storm continued to change course, turning west-northwestward by September 28. The transitioned to an extratropical system on October 1, and reached England on October 3.

### Tropical depression

A tropical depression developed over the eastern Caribbean on September 26. The depression moved generally westward and likely peaked with maximum sustained winds of 35 mph (55 km/h). By September 30, the depression curved west-northwestward and dissipated near Cuba's Cabo San Antonio on the following day.

### Hurricane Eight

The Florida Keys and Miami Hurricane of 1906
This hurricane originated on October 4 near Barbados as a "cyclonic perturbation"; however, no closed circulation was evidently associated with the system. Barometric pressures began sinking in Panama as the system drifted westward, and it was considered a tropical storm by October 8. As the storm headed west, it rapidly strengthened; the storm became a hurricane on October 9 and intensified into a major hurricane on October 10. As it began to curve northwestward, the hurricane made landfall in Nicaragua, and weakened to a tropical storm on October 11. It began to drift north-northwestward later that day, intensifying into a minimal hurricane as it drifted into the Gulf of Honduras.
However, the hurricane weakened to a tropical storm again on October 14 as it moved overland, and began to curve north-northwest, restrengthening to a major hurricane by October 17 while it was west-southwest of Cuba. The hurricane made landfall over Cuba on the evening of October 17. The hurricane passed over southern Florida near Pigeon Key and Downtown Miami on October 18. The hurricane continued traveling north-northwest; however, it was forced to re-curve south-southwest, as a result of a high-pressure area. The hurricane weakened to a tropical storm overland, eventually becoming a tropical depression. The system meandered into the Gulf of Mexico, making a final landfall in Central America on October 23.
The hurricane wreaked havoc throughout its path — crops in Central America suffered severe damage, and rainfall destroyed many roads and bridges in Nicaragua. In Cuba, at least 29 people were killed, and tobacco crops in the country were ruined. The most severe damage was caused in Florida — the state suffered more than $420,000 in damage and more than two hundred people were killed. Of the people killed in Florida, 135 were workers on the Florida East Coast Railway, and more than 70 people were drowned near Elliott Key after two steamers sank. Throughout its path, damage caused by the hurricane totaled to at least $4,135,000 and at least 240 deaths were recorded.

### Tropical Storm Nine

A tropical storm was believed to have formed from a low-pressure area, possibly on the tail end of a cold front on October 14. The storm moved westward; however, it began to curve west-southwestward on October 15, as it reached its peak winds of 50 mph (80 km/h). The storm continued to trek towards the west-southwest on October 16, later making landfall in eastern Florida on October 17 as a tropical depression. No damage is known to have been caused by the tropical storm.

### Tropical Storm Ten

The tenth storm of the season formed on October 15 as a tropical storm east of the Bahamas and north of Hispaniola. The tropical storm moved northwest, but changed direction and began to curve northeastward on October 17. As the storm moved eastward, it slowly strengthened; the storm attained its peak winds of 50 mph (80 km/h) on October 18. The tropical storm headed directly eastward on October 19, and dissipated in the open Atlantic on October 20.

### Hurricane Eleven

The final storm of the season started as a tropical depression on November 5, located in the Caribbean, south of Cuba. It strengthened into a tropical storm later during the day as it curved northward, and the storm turned towards the northeast on November 6. As it approached Cuba, the storm briefly attained hurricane status; however, as the hurricane made landfall over Cuba, it weakened to a tropical storm. The storm drifted over the Bahamas as a minimal tropical storm on November 8 while it traced east-northeast. It continued to weaken, and transitioned into an extratropical storm on November 10. No damage is known to have been caused by the hurricane. Its path, its intensity, and the time of the year in which it formed are very similar to those of Hurricane Katrina of 1981.