Early-est:     South of Kermadec Islands    2025.08.01-16:02:45.37    q:B      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754064166507.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754064166507.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754064166507.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* [10]    Mwp: - [0]    Mwpd: - [0]
Region: South of Kermadec Islands
Origin Time: 2025.08.01-16:02:45.37 UTC
Hypocenter: lat: -33.05°  lon: -178.13°  [+/-23km]    depth: 15km  [+/-14km]
Location Quality: qualityCode:  B     stdErr: 1.9s   assocPhases: 15   usedPhases: 14
minDist: 7.2°   maxDist: 152.0°   AzGap: 222°   2ndAzGap: 249°   atten: -1.41 [+/-0.23]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 23km   azMaxHorUnc: 102°
68%ConfEllipsoid:   semiMajorAxisLength: 28km   majorAxisAzimuth: 282°   majorAxisPlunge: 4°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 14°   intermediateAxisPlunge: 27°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [6]    Td: -s [0]    Td*T50Ex: - [0]    To: 6.4s [6]
Closest plate boundaries:
   Kermadec / Pacific [subduction zone]: distance: ~30km
   Kermadec - Australia [oceanic spreading ridge]: distance: ~190km
Subduction geometry:    Zone: Kermadec-Tonga: 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 (30km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       15km
       15km
       15km
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.1754064166507.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 54°   dip: 21°   rake: -137°
Nodal Plane 2: strike: 283°   dip: 76°   rake: -75°
Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 4.0   misfit: 0.05   stationDistributionRatio: 0.32   meanDistP: 50.9   meanDistT: 42.9   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754064166507.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.1754064166507.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: 222°   stationPolarityCount: 13   misfit: 0.99   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 38.63   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754064166507.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754064166507
Event info last updated: 2025.08.01-17:01:03 UTC
Event first association/location: 2025.08.01-16:08:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA