Aller au contenu principal
Open on Live Map
Seismic Event Dossier01:46 Local (17:46 UTC)(à l'instant)

Earthquake near Negros Occidental, Philippines

A magnitude 7.8 (MW) earthquake occurred on 1948-01-24, 01:46 local time (17:46 UTC) (à l'instant), centered 82 km W of Bacolod (Philippines). The hypocenter was located at a shallow depth of 15 km. Primary telemetry verified by USGS.

Historical Landmark Earthquake

#98 of All Time

Curated Global Seismic Archive (1700–Present)

Top-100 Earthquakes
Magnitude 7.8 historical earthquake occurring on 1948-01-24 in Philippines. Associated with the West Panay Fault (Active Fault). Documented casualties: > 1,000.
Documented Fatalities> 1,000
Fault KinematicsActive Fault
Equivalent Energy7.56 Mt TNT

Magnitude

MW
M 7.8

7.56 Mt TNT

Profondeur

15 km
15 km

shallow (Croûte superficielle)

Impact PAGER

red
> 1,000 fatalities

Blessés: > 5,000 · ~56.3M ressenti

Carte interactive de l'épicentre et des failles

10.71°N, 122.23°E
Faille5 km
West Panay Fault
Active Fault · ~15.0 mm/yr
Felt byMMI III+
~56.3M exposed
~11.2M strong shaking
Primary SolutionUSGS
USGS#iscgem897163reviewed
1 agencies reporting
Setting10.7°N
Île de Mindanao et fosse
Continental / Inland crustal

Seismic Activity & Aftershock Sequence

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

M0.0M4.5M9.0100%50%0%Choc principal27 janv.1 févr.6 févr.M7.8
Hover or tap a point to inspect aftershocks and risk probability curve.
<35 km (superficiel)35–70 km (intermédiaire)>70 km (profond)Choc principal
Prévision de risque ML:12h35%24h47%72h61%7d76%

Verified Disaster & Impact Assessment

Official emergency management data cross-checked against multi-agency wires

Continuous verification
Casualties
Damage assessment in progress
Tsunami Status
No tsunami threat
NOAA PTWC & regional buoys
Citizen Felt Reports
0
No felt reports submitted
Macroseismic DYFI verification
Aftershock Sequence
Aftershocks: 2
High Omori aftershock probability
LightGBM hazard model forecast

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
15.0 kmRef
10.71°, 122.23°Origin
Authoritative
iscgem897163

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

6 localités

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

TownDistanceIntensity
Iloilo · Iloilo34 kmMMI IX
Bacolod · Negros Occidental82 kmMMI VIII
Roxas · Capiz112 kmMMI VIII
Cadiz · Negros Occidental120 kmMMI VII
Cebu · Cebu187 kmMMI VII
Ormac · Leyte262 kmMMI VI

Tectonic setting

Nearest mapped active fault: West Panay Fault, 5 km away, slip rate ~15.0 mm/yr (GEM Global Active Faults).

Profil sismique régional

Île de Mindanao et fosse

Consultez la surveillance sismique en direct, les références historiques de danger, les modèles de glissement des failles et les intervalles de récurrence pour cette zone.