Early-est:     Southern Sumatra, Indonesia    2025.08.01-11:15:30.08    q:B      mb:4.4*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754046929762.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754046929762.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754046929762.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: 4.4* [10]    Mwp: - [0]    Mwpd: - [0]
Region: Southern Sumatra, Indonesia
Origin Time: 2025.08.01-11:15:30.08 UTC
Hypocenter: lat: -4.90°  lon: 106.70°  [+/-12km]    depth: 355km  [+/-15km]
Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 17   usedPhases: 17
minDist: 3.8°   maxDist: 147.0°   AzGap: 88°   2ndAzGap: 133°   atten: -3.14 [+/-0.42]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 10km   maxHorUnc: 12km   azMaxHorUnc: 33°
68%ConfEllipsoid:   semiMajorAxisLength: 16km   majorAxisAzimuth: 26°   majorAxisPlunge: 38°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 234°   intermediateAxisPlunge: 49°   semiMinorAxisLength: 12km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.0 [7]    Td: -s [0]    Td*T50Ex: - [0]    To: 4.0s [7]
Closest plate boundaries:
   Sunda / Australia [subduction zone]: distance: ~430km
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 (430km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       355km
       355km
       355km
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.1754046929762.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 169°   dip: 32°   rake: 89°
Nodal Plane 2: strike: 351°   dip: 58°   rake: 91°
Quality: azimuthalGap: -1°   stationPolarityCount: 9   misfitWeightCount: 1.7   misfit: 0.00   stationDistributionRatio: 0.23   meanDistP: 56.6   meanDistT: 55.0   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754046929762.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.1754046929762.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: 159°   stationPolarityCount: 9   misfit: 0.99   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 27.37   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754046929762.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754046929762
Event info last updated: 2025.08.01-12:14:03 UTC
Event first association/location: 2025.08.01-11:38:03 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA