Union City, CA Weather

• in the Scotia Sea, southeast of South America
  Posted on Jun 28 2025 at 4:44 am EDT
  
  Category: Information
  
  Bulletin Issue Time: 2025.06.28 08:44:54 UTC
  
  Preliminary Magnitude: 6.5(Mwp)
  
  Lat/Lon: -61.100 / -38.600
  
  Affected Region: in the Scotia Sea, southeast of South America
  
  Note: * There is no tsunami danger for the U.S. east coast, the Gulf of America states, or the eastern coast of Canada. * Based on earthquake information and historic tsunami records, the earthquake is not expected to generate a tsunami.
  
  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

• SCOTIA SEA
  Posted on Jun 28 2025 at 4:44 am EDT
  
  Category: Information
  
  Bulletin Issue Time: 2025.06.28 08:44:10 UTC
  
  Preliminary Magnitude: 6.5(Mwp)
  
  Lat/Lon: -61.137 / -38.592
  
  Affected Region: SCOTIA SEA
  
  Note:
  
  Definition: View bulletin
  
  
  
  NTWC Home Page

Tsunami – The Watchers

Watching the world evolve and transform

Seismic activity – The Watchers

Watching the world evolve and transform

• Ridge of Pennata islet collapses after the strongest earthquake in 40 years strikes Campi Flegrei, Italy
  Posted on Jun 30 2025 at 2:04 pm EDT
  
  An earthquake swarm with the strongest quake registered as an M4.6 quake struck the Campi Flegrei area in southern Italy on June 30, 2025, prompting evacuations and train delays in the region. It was the strongest tremor to strike the region in 40 years, surpassing the M4.4 quakes of March and May.

  Source



• Strong and shallow M6.6 earthquake hits Scotia Sea
  Posted on Jun 28 2025 at 6:45 am EDT
  
  A strong earthquake registered by the USGS as an M6.6 struck the Scotia Sea at 08:32 UTC on June 28, 2025. The agency reports a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth.

  Source



• Strong M6.1 earthquake hits near the coast of Philippines
  Posted on Jun 28 2025 at 4:00 am EDT
  
  A strong earthquake registered by the USGS as M6.1 hit near the coast of the Philippines at 23:07 UTC on June 27, 2025. The agency is reporting a depth of 101 km (63 miles). EMSC is reporting the same magnitude and depth. PHIVOLCS is reporting M6.1 at a depth of 85 km (53 miles).

  Source



• More than 470 earthquakes recorded in the Tokara Islands, Japan
  Posted on Jun 26 2025 at 12:02 pm EDT
  
  An ongoing earthquake swarm in the Tokara Islands, southern Japan, has produced 474 tremors since June 21, 2025, with events reaching magnitudes up to M5.1 and a maximum local Japanese shindo intensity of 4.

  Source