Early-est:     Northern Algeria    2025.06.05-02:22:49.04    q:C      mb:4.3*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1749090168305.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1749090168305.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1749090168305.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: 4.3* [6]    Mwp: - [0]    Mwpd: - [0]
Region: Northern Algeria
Origin Time: 2025.06.05-02:22:49.04 UTC
Hypocenter: lat: 36.27°  lon: 3.47°  [+/-25km]    depth: 17km  [+/-15km]
Location Quality: qualityCode:  C     stdErr: 1.7s   assocPhases: 10   usedPhases: 10
minDist: 3.7°   maxDist: 23.4°   AzGap: 250°   2ndAzGap: 256°   atten: -1.84 [+/-0.83]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 25km   azMaxHorUnc: 170°
68%ConfEllipsoid:   semiMajorAxisLength: 31km   majorAxisAzimuth: 350°   majorAxisPlunge: 8°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 260°   intermediateAxisPlunge: 0°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.2 [4]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.9Xs [3]
Closest plate boundaries:
   Eurasia - Africa [continental convergent boundary]: distance: ~60km
   Eurasia \ Africa [subduction zone]: distance: ~670km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (60km)
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       17km
       17km
       17km
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.1749090168305.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 316°   dip: 11°   rake: -18°
Nodal Plane 2: strike: 64°   dip: 87°   rake: -101°
Quality: azimuthalGap: -1°   stationPolarityCount: 9   misfitWeightCount: 2.2   misfit: 0.06   stationDistributionRatio: 0.30   meanDistP: 53.1   meanDistT: 55.6   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1749090168305.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.1749090168305.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: 250°   stationPolarityCount: 9   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1749090168305.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1749090168305
Event info last updated: 2025.06.05-03:21:02 UTC
Event first association/location: 2025.06.05-02:25:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA