Early-est:     Poland    2026.08.12-03:45:17.26    q:B      mb:4.5*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786506317591.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786506317591.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786506317591.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: 4.5* [9]    Mwp: 4.7X [1]    Mwpd: - [0]
Region: Poland
Origin Time: 2026.08.12-03:45:17.26 UTC
Hypocenter: lat: 51.71°  lon: 16.30°  [+/-6km]    depth: 21km  [+/-36km]
Location Quality: qualityCode:  B     stdErr: 1.2s   assocPhases: 24   usedPhases: 14
minDist: 1.7°   maxDist: 77.2°   AzGap: 127°   2ndAzGap: 158°   atten: -1.86 [+/-0.37]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 4km   maxHorUnc: 6km   azMaxHorUnc: 3°
68%ConfEllipsoid:   semiMajorAxisLength: 36km   majorAxisAzimuth: 333°   majorAxisPlunge: 87°   semiIntermediateAxisLength: 7km   intermediateAxisAzimuth: 187°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 4km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.4 [11]    Td: -s [0]    Td*T50Ex: - [0]    To: 5.7s [11]
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:
       21km
       21km
       21km
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.1786506317591.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 22°   dip: 54°   rake: 174°
Nodal Plane 2: strike: 115°   dip: 85°   rake: 36°
Quality: azimuthalGap: -1°   stationPolarityCount: 16   misfitWeightCount: 4.5   misfit: 0.09   stationDistributionRatio: 0.39   meanDistP: 54.9   meanDistT: 49.9   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786506317591.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.1786506317591.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 21°   dip: 75°   rake: -176°
Nodal Plane 2: strike: 290°   dip: 86°   rake: -15°
Quality: azimuthalGap: 127°   stationPolarityCount: 16   misfit: 0.37   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 41.71   fracAcc30degPref: 0.50   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786506317591.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786506317591
Event info last updated: 2026.08.12-04:44:00 UTC
Event first association/location: 2026.08.12-03:47:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA