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

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

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

2025-07-30 08:22 message from NTWC

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)
Amchitka (Alaska)	51.57	178.88	00:56	0.55	-
Atka (Alaska)	52.19	-174.21	21:49	0.46	-
Adak (Alaska)	-	-	23:21	0.82	-
Nikolski (Alaska)	52.93	-168.85	22:27	0.37	-
Langara (BC)	-	-	23:05	0.06	-
Winter Harbour (BC)	-	-	00:32	0.27	-
Tofino British (Columbia)	-	-	00:20	0.21	-
Port Orford (Oregon)	42.75	-124.48	00:19	0.21	-
La Push (Washington)	47.9	-124.62	00:24	0.18	-
Charleston (Oregon)	43.34	-124.33	00:30	0.18	-
Humboldt Bay (California)	-	-	00:41	0.24	-
Crescent City (CA)	-	-	00:37	0.46	-
Bamfield (BC)	-	-	00:53	0.09	-
Arena Cove (California)	-	-	00:53	0.49	-
Point Reyes (California)	-	-	00:55	0.24	-
Monterey (California)	36.61	-121.91	00:51	0.43	-
Nikolskoe (Russia)	54.3	35.88	17:14	0.06	-

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
NTWC	Amchitka (Alaska)	51.57	178.88	00:56	0.55	-
NTWC	Atka (Alaska)	52.19	-174.21	21:49	0.46	-
NTWC	Adak (Alaska)	-	-	23:21	0.82	-
NTWC	Nikolski (Alaska)	52.93	-168.85	22:27	0.37	-
NTWC	Langara (BC)	-	-	23:05	0.06	-
NTWC	Winter Harbour (BC)	-	-	00:32	0.27	-
NTWC	Tofino British (Columbia)	-	-	00:20	0.21	-
NTWC	Port Orford (Oregon)	42.75	-124.48	00:19	0.21	-
NTWC	La Push (Washington)	47.9	-124.62	00:24	0.18	-
NTWC	Charleston (Oregon)	43.34	-124.33	00:30	0.18	-
NTWC	Humboldt Bay (California)	-	-	00:41	0.24	-
NTWC	Crescent City (CA)	-	-	00:37	0.46	-
NTWC	Bamfield (BC)	-	-	00:53	0.09	-
NTWC	Arena Cove (California)	-	-	00:53	0.49	-
NTWC	Point Reyes (California)	-	-	00:55	0.24	-
NTWC	Monterey (California)	36.61	-121.91	00:51	0.43	-
NTWC	Nikolskoe (Russia)	54.3	35.88	17:14	0.06	-

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