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Seismic Event Dossier05:58 Local (21:58 UTC)(2mo ago)

M 7.8 earthquake Flores Sea (Indonesia)

A magnitude 7.8 (MW) earthquake occurred on 2026-08-14, 05:58 local time (21:58 UTC) (2mo ago), centered Flores Sea (100 km W of Maumere, Indonesia). The hypocenter was located at a shallow depth of 10 km. Primary telemetry verified by USGS.

Historical Landmark Earthquake

#88 of All Time

Curated Global Seismic Archive (1700–Present)

Top-100 Earthquakes

A magnitude 7.8 earthquake struck ⁨Flores Sea (Indonesia)⁩ on 2026年8月14日. Documented deaths: 156.

Documented Fatalities156Source: NOAA NCEI Significant Earthquake Database
Fault KinematicsActive fault
Equivalent Energy7.56 Mt TNT

マグニチュード

MW
M 7.8

7.56 Mt TNT

震源の深さ

10 km
10 km

shallow (浅発・地殻内)

PAGER影響評価

yellow
10 – 100 fatalities

負傷者数: > 5,000 · ~30.3M 人が体感

震央・断層インタラクティブマップ

8.34°S, 121.34°E
断層37 km
活断層セグメント
Slip · ~15.0 mm/yr
Felt byMMI III+
~30.3M exposed
~2.6M strong shaking
Primary SolutionUSGS
USGS#us6000tkt2reviewed
1 agencies reporting
Setting8.3°S
フローレス島・バンダ弧
Flores Sea (海域)

Seismic Activity & Aftershock Sequence

Timeline of foreshocks, main rupture, aftershocks and machine learning risk probability evolution.

M0.0M4.5M9.0100%50%0%本震8月14日 04時8月14日 16時8月15日 04時8月15日 16時8月16日 04時8月16日 16時8月17日 04時8月17日 16時M7.8
Hover or tap a point to inspect aftershocks and risk probability curve.
<35 km (浅発・被害大)35–70 km（やや深い）>70 km (深発地震)本震

Situation Monitoring

Continuous verification
Multi-agency verification of casualties, tsunami alerts, and seismic sequence

Key facts so far

Casualties
None expected (offshore epicenter)
Zero exposed population
Tsunami Status
No tsunami threat
NOAA PTWC & regional buoys
Citizen Felt Reports
66
Felt locally near epicenter
Macroseismic DYFI verification
Aftershock Sequence
Monitoring
Aftershocks expected (Omori law)
LightGBM hazard model forecast
Multi-agency seismic telemetry active. Awaiting wire headlines.

Agency Discrepancy Matrix (Cross-Network Verification)

Comparing multi-network solutions from primary and teleseismic monitoring agencies.

Network / SourceMagnitude (Scale & Diff)Depth & DiffEpicenter & Shift (Δd)ConsensusEvent ID / Data
USGS
United States Geological Survey · Global / US
M7.8(Mw)Ref
10.0 kmRef
-8.34°, 121.34°Origin
Authoritative
us6000tkt2

Why do agency magnitudes differ? Seismological agencies use different instrumentation networks, crustal velocity models, and mathematical magnitude scales (e.g. Moment Magnitude Mw vs Local Richter ML vs Surface Wave Ms). Differences of 0.1–0.3 are common and reflect physical observation geometry rather than errors.

Where it was felt

5 か所の集落

Shaking intensity is modelled from magnitude, depth and distance (GMPE attenuation), not reported by residents.

TownDistanceIntensity
Ende · Nusa Tenggara Timur67 kmMMI VIII
Maumere · Nusa Tenggara Timur101 kmMMI VIII
Ruteng · Nusa Tenggara Timur101 kmMMI VIII
Waingapu · Nusa Tenggara Timur190 kmMMI VII
Raba · Nusa Tenggara Barat284 kmMMI VI

Tectonic setting

Nearest mapped active fault: 活断層セグメント, 37 km away, slip rate ~15.0 mm/yr (GEM Global Active Faults).

地域地震プロファイル

フローレス島・バンダ弧

このゾーンのリアルタイム地震モニタリング、過去の危険基準、断層すべりモデル、再来周期を表示。