Early-est:     Java, Indonesia    2026.06.27-07:47:24.94    q:A      mb:5.2*    Mwp:-    Mwpd:-    Td*T50Ex:0.5     fmamp_polarity:./hypo.1782546442477.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1782546442477.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1782546442477.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: 5.2* [47]    Mwp: - [0]    Mwpd: - [0]
Region: Java, Indonesia
Origin Time: 2026.06.27-07:47:24.94 UTC
Hypocenter: lat: -8.69°  lon: 111.33°  [+/-7km]    depth: 67km  [+/-8km]
Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 96   usedPhases: 68
minDist: 1.9°   maxDist: 163.7°   AzGap: 44°   2ndAzGap: 46°   atten: -1.23 [+/-0.23]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 6km   maxHorUnc: 7km   azMaxHorUnc: 11°
68%ConfEllipsoid:   semiMajorAxisLength: 8km   majorAxisAzimuth: 10°   majorAxisPlunge: 25°   semiIntermediateAxisLength: 7km   intermediateAxisAzimuth: 198°   intermediateAxisPlunge: 65°   semiMinorAxisLength: 7km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6 [34]    Td: 0.8s [4]    Td*T50Ex: 0.5 [4]    To: 31.6s [33]
Closest plate boundaries:
   Sunda / Australia [subduction zone]: distance: ~200km
Subduction geometry:    Zone: Sumatra-Java: 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 (200km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.5
   0.5
   0.5
Td*To:
     25.3
     25.3
     25.3
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       67km
       67km
       67km
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.1782546442477.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 40°   dip: 2°   rake: 176°
Nodal Plane 2: strike: 135°   dip: 90°   rake: 88°
Quality: azimuthalGap: -1°   stationPolarityCount: 43   misfitWeightCount: 20.0   misfit: 0.17   stationDistributionRatio: 0.50   meanDistP: 35.9   meanDistT: 16.7   qualityCode: B
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1782546442477.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.1782546442477.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 306°   dip: 60°   rake: 171°
Nodal Plane 2: strike: 41°   dip: 82°   rake: 30°
Quality: azimuthalGap: 44°   stationPolarityCount: 43   misfit: 0.28   stationDistributionRatio: 0.65   rmsAngDiffAccPref: 32.41   fracAcc30degPref: 0.79   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1782546442477.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1782546442477
Event info last updated: 2026.06.27-08:46:00 UTC
Event first association/location: 2026.06.27-07:50:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA