Union City, CA Weather

• 70 miles SE of Sand Point, Alaska
  Posted on Jul 20 2025 at 6:31 pm EDT
  
  Category: Information
  
  Bulletin Issue Time: 2025.07.20 22:31:32 UTC
  
  Preliminary Magnitude: 6.1(Mwp)
  
  Lat/Lon: 54.429 / -159.513
  
  Affected Region: 70 miles SE of Sand Point, Alaska
  
  Note: * An earthquake has occurred; a tsunami is not expected.
  
  Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for another section of the ocean. View bulletin
  
  
  
  NTWC Home Page

Tsunami – The Watchers

Watching the world evolve and transform

• Very strong M7.4, series of powerful earthquakes hit Kamchatka Peninsula, triggering Tsunami Watch
  Posted on Jul 20 2025 at 3:30 am EDT
  
  A very strong earthquake registered by the USGS as M7.4 hit near the coast of the Kamchatka Peninsula, Russia at 06:49 UTC on July 20, 2025. The agency is reporting a depth of 20 km (12.4 miles). The quake was preceded by M5.0 at 06:02 and M6.7 at 06:28 UTC and followed by another M6.7 at 09:07 UTC.

  Source

Seismic activity – The Watchers

Watching the world evolve and transform

• Strong M6.3 earthquake hits Sulawesi, Indonesia
  Posted on Jul 23 2025 at 6:39 pm EDT
  
  A strong earthquake registered by the USGS as M6.3 hit Sulawesi, Indonesia at 20:50 UTC on July 23, 2025. The agency is reporting a depth of 144 km (89 miles). EMSC is reporting the same magnitude and depth.

  Source



• Moderately strong M5.1 earthquake off Crete felt across western Greece
  Posted on Jul 23 2025 at 3:02 pm EDT
  
  A moderately strong earthquake registered by the EMSC as M5.1 (downgraded from M5.8) hit offshore Crete near Antikythera, Greece at 16:26 local time (13:26 UTC) on July 23, 2025. The agency is reporting a depth of 50 km (31 miles).

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• Seven shallow earthquakes strike near Randolph, New Jersey in under 18 hours
  Posted on Jul 23 2025 at 7:31 am EDT
  
  Morris County, New Jersey experienced a sequence of seven shallow earthquakes over an 18-hour period on July 21, 2025, with magnitudes ranging from M0.7 to M2.0 and all events occurring at a depth of approximately 5 km (3 miles).

  Source



• More than 130 strong aftershocks recorded after M7.4 earthquake east of Petropavlovsk-Kamchatsky, Kamchatka
  Posted on Jul 22 2025 at 5:34 am EDT
  
  Strong aftershocks continue shaking eastern Kamchatka following a powerful M7.4 earthquake that struck east of Petropavlovsk-Kamchatsky at 06:49 UTC on July 20, 2025. A total of 136 M4+ earthquakes, including six foreshocks and multiple M6+ events, have been recorded since the sequence began.

  Source



• Strong M6.2 earthquake hits near Sand Point days after M7.3, Alaska
  Posted on Jul 21 2025 at 1:53 am EDT
  
  A strong earthquake registered by the USGS as M6.2 hit south of Sand Point, Alaska at 22:28 UTC on July 20, 2025. The agency is reporting a depth of 47.3 km (29 miles). EMSC is reporting the same magnitude and depth. The quake hit four days after powerful M7.3 struck the same region, triggering a Tsunami Warning.

  Source



• Very strong M7.4, series of powerful earthquakes hit Kamchatka Peninsula, triggering Tsunami Watch
  Posted on Jul 20 2025 at 3:30 am EDT
  
  A very strong earthquake registered by the USGS as M7.4 hit near the coast of the Kamchatka Peninsula, Russia at 06:49 UTC on July 20, 2025. The agency is reporting a depth of 20 km (12.4 miles). The quake was preceded by M5.0 at 06:02 and M6.7 at 06:28 UTC and followed by another M6.7 at 09:07 UTC.

  Source