Early-est:     New Britain Region, P.N.G.    2026.06.22-10:58:47.97    q:B      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1782125929310.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1782125929310.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1782125929310.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: 4.8* [22]    Mwp: - [0]    Mwpd: - [0]
Region: New Britain Region, P.N.G.
Origin Time: 2026.06.22-10:58:47.97 UTC
Hypocenter: lat: -5.52°  lon: 150.80°  [+/-13km]    depth: 118km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 1.0s   assocPhases: 45   usedPhases: 30
minDist: 1.9°   maxDist: 147.3°   AzGap: 84°   2ndAzGap: 147°   atten: -0.92 [+/-0.42]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 13km   azMaxHorUnc: 53°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 211°   majorAxisPlunge: 75°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 56°   intermediateAxisPlunge: 14°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 23%
T50Ex: 0.3 [10]    Td: -s [0]    Td*T50Ex: - [0]    To: 5.0s [9]
Closest plate boundaries:
   South Bismarck / Solomon Sea [subduction zone]: distance: ~110km
   Manus - South Bismarck [oceanic spreading ridge]: 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 (110km)
 no
 no
Prob underwater:
 23%
 23%
 23%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       118km
       118km
       118km
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.1782125929310.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 284°   dip: 31°   rake: -72°
Nodal Plane 2: strike: 83°   dip: 61°   rake: -100°
Quality: azimuthalGap: -1°   stationPolarityCount: 27   misfitWeightCount: 9.0   misfit: 0.21   stationDistributionRatio: 0.46   meanDistP: 51.5   meanDistT: 54.4   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1782125929310.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.1782125929310.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: 152°   stationPolarityCount: 27   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1782125929310.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1782125929310
Event info last updated: 2026.06.22-11:57:00 UTC
Event first association/location: 2026.06.22-11:04:03 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA