{"groups":[{"group_name":"Alaska M5.5","group_summary":"The strongest event was M5.5, 92 km NNW of Aleneva, AK. It had a green alert and a USGS ShakeMap; no higher alert was issued."},{"group_name":"Northern Marianas","group_summary":"Several notable events occurred near the Northern Mariana Islands and Volcano Islands, including M5.1 and M5.0 events on Oct. 4–5; one had a green alert."},{"group_name":"Mostly microquakes","group_summary":"682 of 710 events were micro magnitude; only 5 were light or moderate. Overall activity was dominated by small events."},{"group_name":"Leading regions","group_summary":"CA, AK, TX, HI, and WA were the leading reported regions. The supplied data does not give event counts by region."},{"group_name":"Sparse impact data","group_summary":"Only 12 events had ShakeMaps. No red, orange, or yellow alerts were reported; 2 were green and 708 had no alert."}],"briefing_sections":[{"title":"Seismic Pattern","facts":[{"label":"Largest event","value":"M5.5 - AK - 92 km NNW of Aleneva, Alaska","detail":null,"detail_display":null,"tone":"warning","item_ref":{"family":"earthquakes","id":"aka2026tuxgky","kind":"earthquake_event"}},{"label":"Peak significance","value":"M5.5 - AK - 92 km NNW of Aleneva, Alaska","detail":"significance 619","detail_display":null,"tone":"warning","item_ref":{"family":"earthquakes","id":"aka2026tuxgky","kind":"earthquake_event"}}]},{"title":"Operational Context","facts":[{"label":"ShakeMap coverage","value":"12 of 710","detail":"1.7%","detail_display":null,"tone":"default","item_ref":null},{"label":"Public alerts","value":"None","detail":null,"detail_display":null,"tone":"default","item_ref":null},{"label":"Top regions","value":"CA, AK, TX, HI +1","detail":null,"detail_display":null,"tone":"default","item_ref":null},{"label":"Latest event","value":"Oct 7, 2026, 10:53 AM UTC","detail":null,"detail_display":null,"tone":"default","item_ref":null},{"label":"Latest update","value":"Oct 7, 2026, 10:54 AM UTC","detail":null,"detail_display":null,"tone":"default","item_ref":null}]},{"title":"Leading Events","facts":[{"label":"By magnitude","value":"M5.5 - AK - 92 km NNW of Aleneva, Alaska, M5.1 - MP - Volcano Islands, Japan region, M5 - MP - 187 km ENE of Saipan, Northern Mariana Islands +2","detail":null,"detail_display":null,"tone":"default","item_ref":null}]}],"stats":{"event_count":710,"with_shakemap_count":12,"with_shakemap_ratio":0.0169,"magnitude_class_counts":{"micro":682,"minor":23,"light":2,"moderate":3,"strong":0,"major":0,"great":0,"unknown":0},"alert_counts":{"red":0,"orange":0,"yellow":0,"green":2,"none":708,"other":0},"top_regions":["CA","AK","TX","HI","WA"],"max_magnitude":5.5,"max_significance":619,"latest_event_time":"2026-10-07T10:53:19.360000Z","latest_update_time":"2026-10-07T10:54:53.770000Z","top_events_by_magnitude":[{"event_id":"aka2026tuxgky","mag":5.5,"mag_class":"moderate","sig":619,"alert":"green","place":"92 km NNW of Aleneva, Alaska","country_code":"US","primary_state_abbr":"AK","time_utc":"2026-10-06T18:34:31.760000Z","updated_utc":"2026-10-07T06:44:40.875000Z","has_usgs_shakemap":true,"has_shakemap_overlays":true},{"event_id":"us6000tzid","mag":5.1,"mag_class":"moderate","sig":400,"alert":"green","place":"Volcano Islands, Japan region","country_code":"MP","primary_state_abbr":"MP","time_utc":"2026-10-04T11:12:48.352000Z","updated_utc":"2026-10-05T17:33:35.040000Z","has_usgs_shakemap":true,"has_shakemap_overlays":true},{"event_id":"us6000tzna","mag":5.0,"mag_class":"moderate","sig":385,"alert":"none","place":"187 km ENE of Saipan, Northern Mariana Islands","country_code":"MP","primary_state_abbr":"MP","time_utc":"2026-10-05T10:52:09.844000Z","updated_utc":"2026-10-06T11:02:16.793000Z","has_usgs_shakemap":false,"has_shakemap_overlays":false},{"event_id":"us6000tzmt","mag":4.9,"mag_class":"light","sig":369,"alert":"none","place":"Volcano Islands, Japan region","country_code":"MP","primary_state_abbr":"MP","time_utc":"2026-10-05T07:13:38.006000Z","updated_utc":"2026-10-05T07:40:32.040000Z","has_usgs_shakemap":false,"has_shakemap_overlays":false},{"event_id":"us6000tzl0","mag":4.2,"mag_class":"light","sig":272,"alert":"none","place":"off the coast of Oregon","country_code":"US","primary_state_abbr":"OR","time_utc":"2026-10-04T22:13:26.165000Z","updated_utc":"2026-10-06T22:23:35.605000Z","has_usgs_shakemap":false,"has_shakemap_overlays":false}],"top_events_by_significance":[{"event_id":"aka2026tuxgky","mag":5.5,"mag_class":"moderate","sig":619,"alert":"green","place":"92 km NNW of Aleneva, Alaska","country_code":"US","primary_state_abbr":"AK","time_utc":"2026-10-06T18:34:31.760000Z","updated_utc":"2026-10-07T06:44:40.875000Z","has_usgs_shakemap":true,"has_shakemap_overlays":true},{"event_id":"us6000tzid","mag":5.1,"mag_class":"moderate","sig":400,"alert":"green","place":"Volcano Islands, Japan region","country_code":"MP","primary_state_abbr":"MP","time_utc":"2026-10-04T11:12:48.352000Z","updated_utc":"2026-10-05T17:33:35.040000Z","has_usgs_shakemap":true,"has_shakemap_overlays":true},{"event_id":"us6000tzna","mag":5.0,"mag_class":"moderate","sig":385,"alert":"none","place":"187 km ENE of Saipan, Northern Mariana Islands","country_code":"MP","primary_state_abbr":"MP","time_utc":"2026-10-05T10:52:09.844000Z","updated_utc":"2026-10-06T11:02:16.793000Z","has_usgs_shakemap":false,"has_shakemap_overlays":false},{"event_id":"us6000tzmt","mag":4.9,"mag_class":"light","sig":369,"alert":"none","place":"Volcano Islands, Japan region","country_code":"MP","primary_state_abbr":"MP","time_utc":"2026-10-05T07:13:38.006000Z","updated_utc":"2026-10-05T07:40:32.040000Z","has_usgs_shakemap":false,"has_shakemap_overlays":false},{"event_id":"us6000tzl0","mag":4.2,"mag_class":"light","sig":272,"alert":"none","place":"off the coast of Oregon","country_code":"US","primary_state_abbr":"OR","time_utc":"2026-10-04T22:13:26.165000Z","updated_utc":"2026-10-06T22:23:35.605000Z","has_usgs_shakemap":false,"has_shakemap_overlays":false}]},"created_at":"2026-10-07T10:55:36.935121Z","model":"gpt-6-luna","usage":{"input_tokens":1919,"input_tokens_details":{"cache_write_tokens":0,"cached_tokens":0},"output_tokens":591,"output_tokens_details":{"reasoning_tokens":357},"total_tokens":2510},"message":null,"country_code":"US","state_abbr":null,"view":"earthquakes","tiles_version":null,"tiles_updated_at":null}