October 12, 1927 Tsunami: SE. Alaska, AK, United States
A tsunami caused by a landslide began at SE. Alaska, AK, United States on October 12, 1927 at 08:31:00 UTC. 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
The tsunami
- Date
- October 12, 1927, 08:31:00 UTC
- Source
- SE. Alaska, AK, United States
- Cause
- Landslide
- Runups recorded
- 1
- Waters
- Ocean
- How certain
- Questionable tsunami
The toll
The record gives no deaths, injuries or damage for this tsunami.
What the record says
NCEI’s account, from the sources it cites.
A small tsunami was recorded at Ketchikan; its source is unknown. (Ref #239)
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 |
|---|---|---|---|---|---|---|---|
| Ketchikan, AK, AK | United States | 0.03 | Eyewitness observation of water height | day 12, 08:31 |
More
Every tsunami in 1927The 1900sTsunamis of United StatesThis 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 1583.