Early-est:     Afghanistan - Tajikistan Bord Reg.    2026.03.31-13:20:34.28    q:C      mb:4.6*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1774963237976.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1774963237976.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1774963237976.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: 4.6* [13]    Mwp: - [0]    Mwpd: - [0]
Region: Afghanistan - Tajikistan Bord Reg.
Origin Time: 2026.03.31-13:20:34.28 UTC
Hypocenter: lat: 36.36°  lon: 71.54°  [+/-32km]    depth: 184km  [+/-21km]
Location Quality: qualityCode:  C     stdErr: 1.3s   assocPhases: 41   usedPhases: 19
minDist: 3.1°   maxDist: 149.5°   AzGap: 92°   2ndAzGap: 132°   atten: -1.96 [+/-0.29]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 17km   maxHorUnc: 32km   azMaxHorUnc: 156°
68%ConfEllipsoid:   semiMajorAxisLength: 42km   majorAxisAzimuth: 337°   majorAxisPlunge: 21°   semiIntermediateAxisLength: 22km   intermediateAxisAzimuth: 72°   intermediateAxisPlunge: 13°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.0 [7]    Td: 0.4Xs [1]    Td*T50Ex: - [0]    To: 0.9s [7]
Closest plate boundaries:
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       184km
       184km
       184km
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.1774963237976.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 55°   dip: 42°   rake: 131°
Nodal Plane 2: strike: 185°   dip: 60°   rake: 59°
Quality: azimuthalGap: -1°   stationPolarityCount: 17   misfitWeightCount: 8.1   misfit: 0.14   stationDistributionRatio: 0.40   meanDistP: 50.6   meanDistT: 49.2   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1774963237976.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.1774963237976.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 84°   dip: 74°   rake: -173°
Nodal Plane 2: strike: 351°   dip: 83°   rake: -16°
Quality: azimuthalGap: 104°   stationPolarityCount: 17   misfit: 0.11   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 40.22   fracAcc30degPref: 0.40   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1774963237976.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1774963237976
Event info last updated: 2026.03.31-14:19:01 UTC
Event first association/location: 2026.03.31-13:31:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA