Significant earthquakes of 1844

April 16, 1844 Earthquake: San Juan, St Thomas, Puerto Rico, US Territories

April 16, 1844

An earthquake struck San Juan, St Thomas, Puerto Rico, US Territories on April 16, 1844 at 13:20:00 UTC.

Map

Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.

The earthquake

Date
April 16, 1844
Time
13:20:00 UTC
Place
San Juan, St Thomas, Puerto Rico, US Territories
Intensity
8 on the Modified Mercalli scale
Tsunami
None recorded
Epicenter
18.300° N, 66.800° W

The toll

Damage
Moderate (about $1 to $5 million)

Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.

What the record says

NCEI’s account, from the sources it cites.

Reference #124 states that In San Juan all the stone masonry houses were cracked; one of the towers of the Catholic temple in Isabela was cracked. In Bacao the church suffered major damage and in Guyana the customs building was cracked.

Severe earthquake of 30 seconds duration. Felt in Puerto Rico, VII-VIII, and in St. Thomas. In Puerto Rico, several houses and some public buildings were overthrown or cracked. A tower of the temple at Isabela was cracked. The origin may have been north of Puerto Rico. The felt report from Guadeloupe must have been a n error"). Puerto Rico. A violent shock (2) . St. Thomas, Puerto Rico and Guadeloupe (3) . Puerto Rico VIII. In San Juan, nearly all stone houses were cracked. In Bairoa the church was badly damaged and there was damage to the customs hous- at Guayama (reference #1189)

Not mentioned in the Saint Thomas Tidende for the period of April 11th -May 11th although the Barbadian, 5.25.1844 refers to it being felt on this island (as cited in Robson, 1964). Reid and Taber feel that the report of the event being felt in Guadeloupe must be erroneous). First hand reports are primarily found for the eastern part of the island. Supposedly felt as far as St. Thomas and Guadeloupe. (reference #14050)

Other significant earthquakes nearby

Within 200 km, the deadliest first.

More

Significant earthquakes of 1844The 1800sRecent earthquakes near hereThis day in weather history

Sources

Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI earthquake 1855.