Early-est:     New Britain Region, P.N.G.    2026.09.30-08:15:19.80    q:B      mb:5.0*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1790756123784.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1790756123784.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1790756123784.mech.hash.thumb.jpg

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details:
Magnitude: mb: 5.0* [15]    Mwp: 4.0X [1]    Mwpd: - [0]
Region: New Britain Region, P.N.G.
Origin Time: 2026.09.30-08:15:19.80 UTC
Hypocenter: lat: -5.32°  lon: 152.46°  [+/-15km]    depth: 59km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 0.5s   assocPhases: 44   usedPhases: 12
minDist: 1.2°   maxDist: 157.4°   AzGap: 153°   2ndAzGap: 211°   atten: -1.42 [+/-0.53]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 101°
68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 281°   majorAxisPlunge: 26°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 96°   intermediateAxisPlunge: 64°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [10]    Td: 0.5Xs [2]    Td*T50Ex: - [0]    To: 4.1s [10]
Closest plate boundaries:
   South Bismarck / Solomon Sea [subduction zone]: distance: ~40km
   North Bismarck - South Bismarck [continental transform fault]: distance: ~90km
   North Bismarck / Solomon Sea [subduction zone]: distance: ~190km
Subduction geometry:    Zone: Solomon Islands: DEBUG: error: [Errno 2] No such file or directory: 'gmt'    Slab depth at epicenter: error: evaluating slab depth: -999.9
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (40km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       59km
       59km
       59km
Slab depth at epicenter:
       n/a
       -
       -
Tsunami and Rupture predictions (TEST!): No prediction: Event too small (Mwp<7.0) or too few Mwp readings (N<20)
./hypo.1790756123784.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 72°   dip: 44°   rake: -50°
Nodal Plane 2: strike: 202°   dip: 58°   rake: -122°
Quality: azimuthalGap: -1°   stationPolarityCount: 16   misfitWeightCount: 6.2   misfit: 0.07   stationDistributionRatio: 0.45   meanDistP: 49.3   meanDistT: 51.8   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1790756123784.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: 0°
Nodal Plane 2: strike: 270°   dip: 90°   rake: 90°
Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1790756123784.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (No solution available)
Nodal Plane 1: strike: 999°   dip: 99°   rake: 999°
Nodal Plane 2: strike: 324°   dip: 13°   rake: 135°
Quality: azimuthalGap: 233°   stationPolarityCount: 16   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1790756123784.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1790756123784
Event info last updated: 2026.09.30-09:14:01 UTC
Event first association/location: 2026.09.30-08:21:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA