PHEB-2-26110000 ntwc@noaa.gov 2026-04-20T08:46:03-00:00 Actual Update PTWC Public IPAWSv1.0 ntwc@noaa.gov,PHEB-1-26110000,2026-04-20T08:04:07-00:00 26110000 Geo Tsunami Information None Unknown Minor Unlikely 2026-04-20T08:46:03-00:00 2026-04-20T09:46:03-00:00 NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI TSUNAMI INFORMATION STATEMENT TSUNAMI INFORMATION STATEMENT - Event details: Preliminary magnitude 7.4 (Mwp) earthquake / Lat: 39.881, Lon: 143.250 at 2026-04-20T07:52:56Z N/A http://www.tsunami.gov/events/PHEB/2026/04/20/26110000/2/WEHW42/WEHW42.txt EventLocationName OFF THE EAST COAST OF HONSHU JAPAN EventPreliminaryMagnitude 7.4 EventPreliminaryMagnitudeType Mwp EventOriginTime 2026-04-20T07:52:56-00:00 EventDepth 10 kilometers EventLatLon 39.881,143.250 0.000 NWSUGC HIZ001-003-006>007-009-016>018-023-026-029>035-037>050-051>054-201046- ProductDefinition WEHW42 Tsunami Information Bulletin for large earthquakes in the Pacific Basin that are evaluated not to have destructive teletsunamigenic potential, or for large earthquakes with tsunamigenic potential located in the Pacific region but outside the Pacific Basin. EAS-ORG WXR Energy Map image/jpeg http://www.tsunami.gov/events/PHEB/2026/04/20/26110000/2/WEHW42/ Event Data as a JSON document application/json http://www.tsunami.gov/events/PHEB/2026/04/20/26110000/2/WEHW42/PHEB.json OFF THE EAST COAST OF HONSHU JAPAN 39.881,143.25 0.0 zOEfck+NYIZGpFdb7C7k5+w6MpM=UBmRVjo2RHMNopHaN/fqJAHAUKcCTXsPzb/RzaGDfhOnBxHjWMCFVA==

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