Tsunamis in 1917

September 1, 1917 Tsunami: Maupihaa, French Polynesia

September 1, 1917 · 1.9 m · Questionable tsunami

A tsunami of unknown cause began at Maupihaa, French Polynesia on September 1, 1917. The water rose as high as 1.9 meters. 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

Tsunami warnings in force

The tsunami

Date
September 1, 1917
Source
Maupihaa, French Polynesia
Cause
Unknown
Maximum water height
1.9 m (6.2 ft)
Runups recorded
1
Waters
Ocean
How certain
Questionable tsunami

The toll

Damage
Limited (under about $1 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.

Ironically, once von Luckner had left Maupelia for the journey west, a tidal wave did hit the atoll, with devastating results. The wave - in modern parlance probably a "sea surge" - was not forty-five feet, but just 1.9 metres high, yet much bigger than any of the kanaka had ever experienced. Kling reports in the war diary that the sea was so high that it actually entered their tents. The forty metre-long jetty built by the captives was totally obliterated; most of the provisions which had been stored on the little island near the entrance to the lagoon were swept away into the ocean, and that island was under a metre of water. (reference #11648)

The Seeadler at Maupelia. This picture appears to show the Seeadler in her position at anchor before she swung around, struck the coral reef and had to be abandoned on 2 August. In the foreground is the entrance to the lagoon and part of the small island used by the crew to store provisions salvaged from the ship, until a 1.9-metre sea surge swept them into the sea on 1 September 1917. (reference #11649)

Every runup

Nearest the source first. Heights are above sea level at the time; a tide gauge reads half the wave’s full height.

WhereCountryKm from sourceWater height, mInland, mMeasured byFirst wave, UTCDeaths
Maupihaa AtollFrench Polynesia1.9Eyewitness observation of water height

More

Every tsunami in 1917The 1900sTsunamis of French PolynesiaThis day in weather historyAlerts 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 5617.