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Tsunami warnings: How high could the waves be in Russia, Japan, Hawaii, and California?

An earthquake that hit near Russia’s Kamchatka Peninsula has triggered tsunami warnings, evacuation orders for Japan, parts of Russia, Alaska and the Pacific.

Published on: Jul 30, 2025, 07:18:14 IST
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A strong earthquake that hit near Russia’s Kamchatka Peninsula on Wednesday, June 30, triggered tsunami warnings and evacuation orders for Japan, parts of Russia, Alaska and the Pacific. The tremors occurred at 8:25am (2325 GMT Tuesday), registering a preliminary magnitude of 8.0. The magnitude was later upgraded to 8.7.

Tsunami warnings: How high could the waves be in Russia, Japan, Hawaii, and California?  (Unsplash - representational image)
Tsunami warnings: How high could the waves be in Russia, Japan, Hawaii, and California? (Unsplash - representational image)

Also Read | Hawaii under tsunami watch after Russia earthquake: First wave could hit by Tuesday evening

Dangerous tsunami waves, some of them as high as 3m, could reportedly reach areas along the coasts of Russia, Japan and other places in the next few hours. According to latest alerts, here’s how high the waves could be in Russia, Japan, Hawaii, and California and more, as reported by The Guardian:

  • Russia could see waves greater than 3 metres.
  • Japan could see waves of 1 to 3 metres.
  • Hawaii could see waves of 1 to 3 metres.
  • Pacific islands including Midway Island, Johnston Atoll and Palmyra Island could see waves of 1 to 3 metres.
  • Palau, the Marshall Islands and the Philippines could see waves of 0.3 to 1 metres.
  • It is unclear how high the waves will be in California. Should a tsunami be generated, it is likely to reach San Francisco around 12:40 am Wednesday, which is about seven hours after the earthquake.

Estimated wave arrival times in the US

Estimated wave arrival times in the United States range from 11:50 p.m. Tuesday, July 29, in Northern California cities like Fort Bragg and Crescent City to about 1 a.m. Wednesday, July 30, in Southern California locations, including Newport Beach, Oceanside, and La Jolla, according to Visalia Times Delta.

The tsunami watch extended down the West Coast, including Oregon, Washington, Hawaii, and Alaska. In Hawaii, the estimated arrival time of the first tsunami wave is 10:17 p.m. Pacific time or 7:17 p.m. Hawaii time. It is around 9:30 p.m. for parts of Alaska.

"This is a significant, real event," said Reid Wolcott, a meteorologist with the weather service in Seattle. "The imminent threat is for Alaska and areas near the quake. The National Tsunami Warning Center needs additional observation information before more is known about the threat to the US West Coast."

  • Sumanti Sen
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    Sumanti Sen

    Sumanti Sen covers everything that’s happening in the US, from politics to entertainment, but her expertise lies in covering crime news. She has comprehensively chronicled the Idaho student murders, the Laken Riley and Iryna Zarutska cases, and the killing of Charlie Kirk, among other incidents. Over the years, she has interviewed several victims/families of victims of crimes seeking justice. She digs up stories that might otherwise remain unheard, and does her bit to ensure that victims and survivors’ voices are heard. Sumanti’s many years of experience also include interviews with Hamas attack survivors and mental health experts, among others. Her coverage of the October 7 Hamas attack on Israel and interviews with survivors of the tragedy, coupled with her other works including the Titan submersible coverage, earned her the Digi Journo of the Quarter award during her first year at Hindustan Times. Sumanti actively tracks missing person cases in the United States, and peruses Reddit and other social media platforms to bring to light cases that frequently elude public attention. She has extensively covered the disappearances of Nancy Guthrie, Thomas Medlin, Beau Mann, and Sudiksha Konanki, among others. When not at work, you will either find her with her novels, or with her beloved rescue pooches.Read More

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