Overall Red Earthquake in Russia on 29 Jul 2025 23:24 UTC

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M 8.8 Earthquake and Tsunami (9.9 m) in Russia on 29 Jul 2025 23:24 UTC

2025-07-30 06:27 message from NTWC

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 8.8 occurred off the east coast of kamchatka RUSSIA at 2325 UTC on tuesday JULY 29 2025
TSUNAMI waves have been observed
Based on all available data hazardous TSUNAMI waves are forecast for some coasts

Threat Forecast

TSUNAMI waves reaching more than 3 meters above the tide level are possible along some coasts of ecuador... northwestern hawaiian islands... and russia.
TSUNAMI waves reaching 1 to 3 meters above the tide level are possible along some coasts of chile... COSTA rica... FRENCH polynesia... hawaii... japan... JARVIS island... johnston atoll... kiribati... midway island... palmyra island... peru... samoa... and SOLOMON islands.
TSUNAMI waves reaching 0.3 to 1 meters above the tide level are possible for some coasts of antarctica... australia... chuuk... colombia... COOK islands... EL salvador... fiji... guatemala... howland and baker... indonesia... kermadec islands... kosrae... MARSHALL islands... mexico... nauru... NEW caledonia... NEW zealand... nicaragua... niue... NORTHERN marianas... palau... panama... PAPUA NEW guinea... philippines... PITCAIRN islands... pohnpei... taiwan... tokelau... tonga... tuvalu... vanuatu... wake island... WALLIS and futuna... AMERICAN samoa... guam... and yap.
TSUNAMI waves are forecast to be less than 0.3 meters above the tide level for the coasts of brunei... china... dpr of korea... malaysia... REPUBLIC of korea... and vietnam.
Actual amplitudes at the coast MAY vary from forecast amplitudes due to uncertainties in the forecast and local features. in particular maximum TSUNAMI amplitudes on atolls and at locations with fringing or barrier reefs will likely be much smaller than the forecast indicates.
For other areas covered by this product a forecast has not yet been computed. the forecast will be expanded if necessary in subsequent products.

Tsunami Observations

The following are tsunami wave observations from coastal and/or deep-ocean sea level gauges at the indicated locations the maximum tsunami height is measured with respect to the normal tide level

GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
Keehi Hi Usa	21.3	-157.9	06: 12	0.19	34
Makapu'u Hi	21.3	-157.7	06: 04	0.70	14
Kahului Maui	20.9	-156.5	05: 45	1.23	60
Haleiwa Hi	21.6	-158.1	05: 48	1.21	12
Nawiliwili Kauai	22	-159.4	05: 36	0.23	14
Nawiliwili Hi	22	-159.4	05: 37	0.23	12
Hanalei Hi Usa	22.2	-159.5	05: 33	0.90	20
Wake Us	19.3	166.6	03: 50	0.22	14
Mera Jp	34.9	139.8	05: 10	0.32	24
Apra Harbor Guam U	13.4	144.7	04: 42	0.12	56
Saipan Us	15.2	145.7	04: 56	0.23	60
Midway	28.2	-177.4	04: 00	0.96	08
Chichijima Jp	27.1	142.2	03: 57	0.29	16
Atka Ak	52.2	-174.2	03: 22	0.31	68
Hanasaki Hokkaido	43.3	145.6	01: 58	0.32	58
Dart 46413	48	-174.2	01: 44	0.19	40
Kushiro Jp	43	144.4	01: 21	0.33	76
Dart 21415	50.2	171.9	01: 17	0.20	08
Dart 21414	49	178.2	01: 03	0.28	32
Dart 21416	48.1	163.5	00: 03	0.90	24

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
PTWC	Keehi Hi Usa	21.3	-157.9	06: 12	0.19	34
PTWC	Makapu'u Hi	21.3	-157.7	06: 04	0.70	14
PTWC	Kahului Maui	20.9	-156.5	05: 45	1.23	60
PTWC	Haleiwa Hi	21.6	-158.1	05: 48	1.21	12
PTWC	Nawiliwili Kauai	22	-159.4	05: 36	0.23	14
PTWC	Nawiliwili Hi	22	-159.4	05: 37	0.23	12
PTWC	Hanalei Hi Usa	22.2	-159.5	05: 33	0.90	20
PTWC	Wake Us	19.3	166.6	03: 50	0.22	14
PTWC	Mera Jp	34.9	139.8	05: 10	0.32	24
PTWC	Apra Harbor Guam U	13.4	144.7	04: 42	0.12	56
PTWC	Saipan Us	15.2	145.7	04: 56	0.23	60
PTWC	Midway	28.2	-177.4	04: 00	0.96	08
PTWC	Chichijima Jp	27.1	142.2	03: 57	0.29	16
PTWC	Atka Ak	52.2	-174.2	03: 22	0.31	68
PTWC	Hanasaki Hokkaido	43.3	145.6	01: 58	0.32	58
PTWC	Dart 46413	48	-174.2	01: 44	0.19	40
PTWC	Kushiro Jp	43	144.4	01: 21	0.33	76
PTWC	Dart 21415	50.2	171.9	01: 17	0.20	08
PTWC	Dart 21414	49	178.2	01: 03	0.28	32
PTWC	Dart 21416	48.1	163.5	00: 03	0.90	24

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