September 18, 2025 Tsunami: Kamchatka Peninsula, Russia
A tsunami caused by a magnitude 7.8 earthquake began at Kamchatka Peninsula, Russia on September 18, 2025 at 18:58:13 UTC. The water rose as high as 0.31 meters. Its effects were recorded at 33 places in at least 6 countries.
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
- September 18, 2025, 18:58:13 UTC
- Source
- Kamchatka Peninsula, Russia
- Cause
- Earthquake
- Earthquake
- Magnitude 7.8, 19 km deep
- Maximum water height
- 0.31 m (1.0 ft)
- Runups recorded
- 33
- Warning
- Regional Tsunami Warning issued by PTWC for areas without a warning system
- Waters
- Ocean
- How certain
- Definite tsunami
- Source location
- 53.193° N, 160.513° E
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.
Reference #14187 and other news outlets reported Sergey Lebedev (Minister of Emergency Situations of the Kamchatka Territory) stated that a wave reaching a height of 62 cm was recorded in the Semyachik volcano area in Kamchatka translated as “Semyachik. 62 cm second wave,” Lebedev reported on the social network VKontakte.
Location uncertain
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 |
|---|---|---|---|---|---|---|---|
| Nalychevo, Kamchatka | Russia | 86 | 0.3 | Eyewitness observation of water height | |||
| Semjachik, Kamchatka | Russia | 109 | 0.31 | Tide gauge (half the maximum wave height) | |||
| D21416, Kamchatka | Russia | 599 | 0.04 | Deep ocean gauge (half the maximum wave height) | day 18, 19:35 | ||
| D21415 Bpr, 175 NM S of Attu, AK, AK | United States | 856 | 0.06 | Deep ocean gauge (half the maximum wave height) | day 18, 20:02 | ||
| D21419 Bpr, 209 NM S of Kuril Is | Russia | 1,040 | 0.02 | Deep ocean gauge (half the maximum wave height) | day 18, 20:06 | ||
| Amchitka, AK, AK | United States | 1,294 | 0.08 | Tide gauge (half the maximum wave height) | |||
| D21414 Bpr, Northwest Pacific Ocean, AK | United States | 1,321 | 0.05 | Deep ocean gauge (half the maximum wave height) | day 18, 20:34 | ||
| Adak, Sweeper Cove, AK, AK | United States | 1,551 | 0.05 | Tide gauge (half the maximum wave height) | day 18, 21:33 | ||
| Atka Island, AK, AK | United States | 1,705 | 0.02 | Tide gauge (half the maximum wave height) | day 18, 21:21 | ||
| D46413 Bpr, East of Adak, AK, AK | United States | 1,887 | 0.02 | Deep ocean gauge (half the maximum wave height) | day 18, 21:15 | ||
| D21413, SE Tokyo, Japan | Japan | 2,611 | 0.01 | Deep ocean gauge (half the maximum wave height) | day 18, 21:56 | ||
| Midway Islands, HI | US Territories | 3,100 | 0.08 | Tide gauge (half the maximum wave height) | day 18, 23:26 | ||
| French Frigate Shoals, HI, HI | United States | 4,283 | Tide gauge (half the maximum wave height) | day 19, 00:19 | |||
| Hanalei, Kauai, HI, HI | United States | 4,817 | 0.08 | Tide gauge (half the maximum wave height) | day 19, 00:24 | ||
| Port Allen, Kauai, HI, HI | United States | 4,840 | 0.04 | Tide gauge (half the maximum wave height) | day 19, 00:59 | ||
| Nawiliwili, Kauai, HI, HI | United States | 4,849 | 0.04 | Tide gauge (half the maximum wave height) | day 19, 01:12 | ||
| Haleiwa, Oahu, HI, HI | United States | 4,955 | 0.21 | Tide gauge (half the maximum wave height) | day 19, 01:08 | ||
| Waianae, Oahu, HI, HI | United States | 4,963 | 0.08 | Tide gauge (half the maximum wave height) | day 19, 01:21 | ||
| Heeia Kea Harbor, Oahu, HI, HI | United States | 4,986 | 0.05 | Tide gauge (half the maximum wave height) | day 19, 01:39 | ||
| Honolulu, Oahu, HI, HI | United States | 4,995 | 0.04 | Tide gauge (half the maximum wave height) | day 19, 01:23 | ||
| Ala Wai Harbor, Oahu, HI, HI | United States | 4,998 | 0.08 | Tide gauge (half the maximum wave height) | |||
| Waimanalo, Oahu, HI, HI | United States | 5,005 | 0.12 | Tide gauge (half the maximum wave height) | |||
| Kaunakakai, Molokai, HI, HI | United States | 5,065 | Tide gauge (half the maximum wave height) | day 19, 01:03 | |||
| Kahului, Maui, HI, HI | United States | 5,115 | 0.28 | Tide gauge (half the maximum wave height) | day 19, 01:26 | ||
| Hilo, Hawaii, HI, HI | United States | 5,305 | 0.17 | Tide gauge (half the maximum wave height) | day 19, 01:35 | ||
| Crescent City, CA, CA | United States | 5,544 | 0.19 | Tide gauge (half the maximum wave height) | |||
| Pago Pago, American Samoa, AS | US Territories | 7,966 | 0.07 | Tide gauge (half the maximum wave height) | day 19, 04:39 | ||
| Nuku Hiva Island, Marquesas Islands | French Polynesia | 8,859 | 0.09 | Tide gauge (half the maximum wave height) | day 19, 06:25 | ||
| Easter Island | Chile | 12,378 | 0.12 | Tide gauge (half the maximum wave height) | |||
| Punta DE Choros | Chile | 15,059 | 0.13 | Tide gauge (half the maximum wave height) | day 19, 15:27 | ||
| Coquimbo | Chile | 15,125 | 0.1 | Tide gauge (half the maximum wave height) | day 19, 15:50 | ||
| Quintero | Chile | 15,339 | 0.11 | Tide gauge (half the maximum wave height) | day 19, 16:00 | ||
| Coliumo | Chile | 15,530 | 0.18 | Tide gauge (half the maximum wave height) |
More
Every tsunami in 2025The 2000sTsunamis of RussiaThe earthquakeThis 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 6061.