December 1770 Tsunami: W. Luzon Island, Philippines
A tsunami caused by an earthquake began at W. Luzon Island, Philippines in December 1770. Its effects were recorded at 1 place.
Where the waves reached
The source (white) and every runup with a place, colored by the water height recorded there. A ring is a runup NCEI marks doubtful.
- Under 1 m
- 1 to 3 m
- 3 to 10 m
- 10 to 30 m
- 30 m and more
- Height not recorded
Travel times
How long the first wave took to reach each part of the ocean, one line for each hour up to 24, estimated from the source and the depth of the sea.
The travel times are computed in your browser, which needs JavaScript.
- 1 to 4 hours
- 5 to 6 hours
- 7 to 14 hours
- 15 hours and more
Computed in your browser the way NOAA’s own travel time maps are: the wave travels at the square root of gravity times the depth, over NOAA’s ETOPO1 depths averaged to a 10 arc-minute grid. Checked against NOAA NCEI’s maps for 21 tsunamis over the first 24 hours, these lines fall within 10 minutes of NCEI’s at half the points compared and within 52 minutes at 9 in 10. They give when the first wave could arrive, not how high it is; bays, harbors and island chains finer than the grid can see it later. Not for use in a warning: see tsunami.gov.
The tsunami
- Date
- December 1770
- Source
- W. Luzon Island, Philippines
- Cause
- Earthquake
- Earthquake
- The earthquake
- Runups recorded
- 1
- Tsunami intensity (Soloviev-Imamura)
- 0
- Waters
- Ocean
- How certain
- Very doubtful tsunami
- Source location
- 14.600° N, 120.980° E
The toll
- Damage
- Moderate (about $1 to $5 million) with the earthquake or eruption that caused it
- Houses destroyed
- Many (101 to 1,000) with the earthquake or eruption that caused it
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 #414:
1770, December [no date], 21:00. A strong shock was felt at Manila. Several homes were destroyed. The earthquake began with a sharp southern wind, which caused a rough sea.
Reference #1187:
1770, December, 9-11 p.m. Manila: Violent, and destroyed many houses. Within an hour, felt three shocks which caused the author a sudden jump of the heart. Vessels in the bay felt the shocks and thought they had struck the bottom of a reef.
Reference #1072:
1770, December, 23:00, intensity VIII. Destructive earthquake. Mr. Sonnerat states that it wrecked many houses in Manila. This traveler was at the time on board a ship in the very Bay of Manila; hence it is very strange that he does not give the day of the month on which the disaster took place.
Reference #1058:
1770, December, intensity VII. Manila, destructive.
Reference #3029:
1770 December. 9:00-11:00 p.m. Manila. These earthquakes were reported by Sonnerat without giving the date: "There are many volcanoes in the island of Luzon and they may well be the cause of the frequent earthquakes to which the island is subjected; there is not a year without two, three, or four being felt... It seems, as M. Legentil has forcefully said, that the earthquakes come more frequently at the end of the year, and most of them occur at night; I felt two in 1770, in the month of December; the first was violent and destroyed some houses; it was preceded at nine o'clock in the evening by a very strong south wind, which agitated the sea; the sky was covered with a reddish haze; and during two hours I felt three successive shocks, which gave me a palpitation of the heart. The ships which were anchored in the roadstead felt the same motions and one would believe they had touched bottom." MSo, II, 111-112, in the two-volume set. AP, p. 165.
Every runup
Nearest the source first. Heights are above sea level at the time; a tide gauge reads half the wave’s full height.
| Where | Country | Km from source | Water height, m | Inland, m | Measured by | First wave, UTC | Deaths |
|---|---|---|---|---|---|---|---|
| Manila Bay | Philippines | 6 | Eyewitness observation of water height |
More
Every tsunami in 1770The 1700sTsunamis of PhilippinesThe earthquakeAlerts in force
Sources
Tsunami events and runups 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 tsunami event 502.