The 1916 Pensacola hurricane was a tropical cyclone that swept across the western Caribbean Sea and Gulf of Mexico in October 1916. It was the last hurricane of the 1916 Atlantic hurricane season, forming as a tropical depression near Jamaica on October 9 and moved slowly southwest and west, taking an unusual track for storms in October. Intensification was initially slow, but proceeded in earnest after October 11 as the depression strengthened into a tropical storm and then a hurricane. It passed over the Swan Islands before moving ashore the Yucatán Peninsula on October 15 near the border between British Honduras and Mexico. Plantains and coconuts in British Honduras sustained harsh losses. Twenty people were killed following the loss of a ship in the western Caribbean. The tropical cyclone weakened as it moved across the peninsula and curved north into the Gulf of Mexico on October 16.
The hurricane restrengthened as it accelerated towards the U.S. Gulf Coast, reaching a peak with winds of shortly before making landfall near Pensacola, Florida, on the morning of October 18. Records for extreme wind velocities were set in Pensacola and in Mobile, Alabama, where gusts above were recorded. Two people were killed in Alabama. However, the storm's quick movement into the coast reduced the associated storm surge and rainfall, lessening the damage wrought by the hurricane. Total property damage in the Pensacola area amounted to approximately $100,000. In Louisiana, the storm's rainfall was beneficial for crops struggling from a concurrent drought. After moving inland, the storm weakened and merged with another area of low pressure near the Great Lakes on October 19. The resulting storm produced gusty winds over much of the Eastern United States and was blamed for the loss of 49 lives on Lake Erie in what became known as Black Friday.
Meteorological history
In the wake of an earlier hurricane over the Virgin Islands, lowered air pressures prevailed over the Caribbean Sea in mid-October. The 1916 Pensacola hurricane arose from this broad area of low pressure, though its initial developments were not well-observed; a summary of the storm in the October 1916 issue of the Monthly Weather Review described its origins as "uncertain". The Jamaican Weather Service noted that it was difficult to differentiate the barometric influence of the developing tropical cyclone from the Virgin Islands hurricane. A reanalysis of the hurricane, conducted by the Atlantic Oceanographic and Meteorological Laboratory in 2008, determined that it began as a tropical depression east of Jamaica on October 9. The depression moved slowly southwest for the next two days without much fluctuation in its strength. At the time, the Weather Bureau first noted the storm's cyclonic nature on October 11, but nonetheless the available observations suggested the cyclone was of meager intensity south of Jamaica. The storm then turned west and quickly strengthened, becoming a tropical storm on October 12 and a hurricane the following day.
On October 14, its maximum sustained winds topped out at based on nearby observations taken on the Swan Islands. The hurricane maintained these winds for the remainder of its trek in the western Caribbean, eventually making landfall on the Yucatán Peninsula just north of the British Honduras–Mexico border on October 15. The hurricane weakened as it traversed the Yucatán Peninsula and emerged into the Gulf of Mexico as a tropical storm by 12:00 UTC on October 16. Up until that point, the storm's sustained westward trek in tropical latitudes was unprecedented for an October hurricane. After reaching the Gulf of Mexico, the cyclone then curved towards the central Gulf and restrengthened, attaining hurricane intensity on October 17. As it was accelerating north towards the central U.S. Gulf Coast on October 18, the hurricane's winds once again reached , equivalent to a Category 2 on the modern Saffir–Simpson scale. With this intensity, the hurricane made landfall near Pensacola, Florida, at 14:00 UTC that day. Its central pressure was estimated to have been 970 mbar (hPa; 28.64 inHg). Pensacola briefly experienced the storm's calm center. The storm quickly weakened after moving inland, tracking over Alabama, Tennessee, Kentucky, and Illinois before ultimately merging with another area of low pressure near the Great Lakes by 12:00 UTC on October 19. This resulting combined system was initially broad and diffuse, but a dominant center of circulation soon emerged over Illinois on October 19. This new storm tracked northeast into the Great Lakes region and was last observed crossing Ontario.