The Great Hurricane of 1780 kills 20,000–30,000 in the Caribbean.

The Great Hurricane of 1780 was the deadliest tropical cyclone in the Western Hemisphere. An estimated 22,000 people died throughout the Lesser Antilles when the storm passed through the islands from October 10 to October 16. Specifics on the hurricane's track and strength are unknown, as the official Atlantic hurricane database only goes back to 1851.

Great Hurricane (1780) areas affected
Great Hurricane (1780) areas affected (Source: Wikimedia Commons)
Great hurricane of 1780 Sint Eustatius
Great hurricane of 1780 Sint Eustatius (Source: Wikimedia Commons)
Representation of the unfortunate Loss of His Majesty's Ship Stirling Castle - after having been dismasted in the Great Hurricane Octr 6th 1780 - was wrecked near the Silver Keys, off the NE end of Island Hispaniola RMG PY0732 (cropped)
Representation of the unfortunate Loss of His Majesty's Ship Stirling Castle - after having been dismasted in the Great Hurricane Octr 6th 1780 - was wrecked near the Silver Keys, off the NE end of Island Hispaniola RMG PY0732 (cropped) (Source: Wikimedia Commons)

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Sources and further reading: Wikipedia — Great Hurricane of 1780 (CC BY-SA). Images: Wikimedia Commons.