When could a tsunami hit Hawaii, Alaska, or the West Coast of the U.S.? Warnings from the National Weather Service
Find out when a tsunami could impact Hawaii, Alaska, or the U.S. West Coast. Learn about current warnings from the NWS and what to do to stay safe.
The National Weather Service (NWS) has issued a Tsunami Warning for Hawaii and Alaska after an 8.8 magnitude earthquake hit Russia’s Kamchatka peninsula.
As of 6:30 pm PT, the NWS has issued 2 Tsunami Warnings. These warnings are issued when "widespread flooding is expected or occurring.“ These disasters can cause ”dangerous coastal flooding and powerful currents are possible and may continue for several hours or days after initial arrival," reports the NWS.
Tsunami Warning active in Alaska
A tsunami warning remains in effect for coastal areas of Alaska from Samalga Pass, located 30 miles southwest of Nikolski, to Attu.
Tsunami Warning/Advisory/Watch has been UPDATED as of 4:28PM on 7/29/2025.
— NWS Anchorage (@NWSAnchorage) July 30, 2025
Tsunami Warning/Advisory is now in effect for Aleutian and Pribilof Islands, and part of Alaska Peninsula. Much of coastal Alaska is in a Tsunami Watch. Here are the new headlines (1/4): pic.twitter.com/C9Co9fFklF
The NWS advises that residents move to higher ground immediately, with the tsunami expected to arrive at:
- Shemya at 4:40 PM AKDT
- Adak at 5:40 PM AKDT
- Saint Paul at 6:55 PM AKDT.
Find the most up-to-date information on the NWS website.
Tsunami Warning active in Hawaii
A tsunami has been generated and poses a serious threat to all coastlines across the Hawaiian Islands, says the NWS. The NWS says the first tsunami wave could arrive at 7:17 pm HST on Tuesday, July 29, 2025. Island News reported that the City and County of Honolulu Mayor, Rick Blangiardi, said that the tsunami sirens will go off at 4:10 p.m., 5:10 p.m., and 6:10 p.m.
TSUNAMI WARNING
— Hawaii EMA (@Hawaii_EMA) July 30, 2025
IN EFFECT AT 243 PM HST.
THE ESTIMATED ARRIVAL TIME IN HAWAII OF THE FIRST TSUNAMI WAVE IS
0717 PM HST TUE 29 JUL 2025
URGENT ACTION SHOULD BE TAKEN TO PROTECT LIVES AND PROPERTY. HOURLY UPDATES WILL BE POSTED.
STAY SAFE
Residents and visitors should take immediate action if they are currently in coastal areas, and are urged to evacuate to higher ground or move inland without delay. Find the most up-to-date information on the NWS website. You can also find all the evacuation areas here; if you are in one of these areas, you should leave immediately.
Which areas are under a Tsunami Advisory?
West Coast states and American Samoa are currently under a Tsunami Advisory.
In American Samoa, dangerous sea conditions are expected to begin around 9:39 p.m. SST on Tuesday, according to the NWS. Find location-specific information and timing on the NWS website.
As for the West Coast, there are the timing forecasts from just before 7 pm PT:
- Langara, British Columbia, 10:05 PM PDT, July 29
- Tofino, British Columbia, 11:30 PM PDT, July 29
- La Push, Washington, 11:35 PM PDT, July 29
- Neah Bay, Washington, 11:40 PM PDT, July 29
- Port Orford, Oregon, 11:40 PM PDT, July 29
- Long Beach, Washington, 11:45 PM PDT, July 29
- Charleston, Oregon, 11:45 PM PDT, July 29
- Brookings, Oregon, 11:50 PM PDT, July 29
- Fort Bragg, California, 11:50 PM PDT, July 29
- Moclips, Washington, 11:50 PM PDT, July 29
- Westport, Washington, 11:55 PM PDT, July 29
- Seaside, Oregon, 11:55 PM PDT, July 29
- Newport, Oregon, 11:55 PM PDT, July 29
- Crescent City, California, 11:55 PM PDT, July 29
- Monterey, California, 12:15 AM PDT, July 30
- Port Angeles, Washington, 12:20 AM PDT, July 30
- Port San Luis, California, 12:35 AM PDT, July 30
- San Francisco, California, 12:40 AM PDT, July 30
- Port Townsend, Washington, 12:45 AM PDT, July 30
- Santa Barbara, California, 12:50 AM PDT, July 30
- Los Angeles Harbor, California, 1:05 AM PDT, July 30
- Newport Beach, California, 1:10 AM PDT, July 30
- Bellingham, Washington, 1:10 AM PDT, July 30
- Oceanside, California, 1:15 AM PDT, July 30
- La Jolla, California, 1:15 AM PDT, July 30
- Tacoma, Washington, 2:00 AM PDT, July 30
Expected tsunami arrival times in Guam, Rota, Saipan, and Tinian
Here are the expected arrival times for tsunami conditions in Guam, Rota, Saipan, and Tinian, which remain under a Tsunami Advisory:
Saipan
- Magicienne Bay, Saipan, 15.1N, 145.8E, 2:37 PM, July 30
- Obyan, Saipan, 15.1N, 145.7E, 2:37 PM, July 30
- Wing Beach, Saipan, 15.3N, 145.8E, 2:37 PM, July 30
- Garapan, Saipan, 15.2N, 145.7E, 2:40 PM, July 30
Tinian
- Long Beach, Tinian, 15.0N, 145.7E, 2:40 PM, July 30
- Chulu Beach, Tinian, 15.1N, 145.6E, 2:44 PM, July 30
- San Jose, Tinian, 15.0N, 145.6E, 2:47 PM, July 30
Rota
- Mochon Beach, Rota, 14.2N, 145.3E, 2:45 PM, July 30
- Aratsu Bay, Rota, 14.1N, 145.2E, 2:46 PM, July 30
- Songsong, Rota, 14.1N, 145.1E, 2:49 PM, July 30
Guam
- Pati Point, Guam, 13.6N, 145.0E, 2:51 PM, July 30
- Pago Bay, Guam, 13.4N, 144.8E, 2:53 PM, July 30
- Inarajan, Guam, 13.3N, 144.8E, 2:53 PM, July 30
- Apra Harbor, Guam, 13.5N, 144.6E, 2:57 PM, July 30
These forecasts were released at 8:20 pm PT. To ensure you have the most up-to-date information, please check the NWS website.
*This is a developing story
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