Early-est:     Poland    2025.12.08-05:31:06.27    q:B      mb:4.2    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1765171873483.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765171873483.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765171873483.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765171873483.mech.fmamp_amp_mwp.thumb.jpg

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details:
Magnitude: mb: 4.2 [9]    Mwp: - [0]    Mwpd: - [0]
Region: Poland
Origin Time: 2025.12.08-05:31:06.27 UTC
Hypocenter: lat: 51.53°  lon: 16.07°  [+/-4km]    depth: 10km  [+/-3km]
Location Quality: qualityCode:  B     stdErr: 1.0s   assocPhases: 15   usedPhases: 12
minDist: 0.7°   maxDist: 24.9°   AzGap: 84°   2ndAzGap: 132°   atten: -0.56 [+/-0.99]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 3km   maxHorUnc: 4km   azMaxHorUnc: 5°
68%ConfEllipsoid:   semiMajorAxisLength: 5km   majorAxisAzimuth: 4°   majorAxisPlunge: 6°   semiIntermediateAxisLength: 3km   intermediateAxisAzimuth: 272°   intermediateAxisPlunge: 19°   semiMinorAxisLength: 2km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.8 [5]    Td: -s [0]    Td*T50Ex: - [0]    To: -s [0]
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:
       10km
       10km
       10km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1765171873483.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 140°   dip: 69°   rake: 178°
Nodal Plane 2: strike: 231°   dip: 88°   rake: 21°
Quality: azimuthalGap: -1°   stationPolarityCount: 9   misfitWeightCount: 3.8   misfit: 0.13   stationDistributionRatio: 0.42   meanDistP: 48.8   meanDistT: 52.9   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1765171873483.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 52°   dip: 7°   rake: -106°
Nodal Plane 2: strike: 248°   dip: 83°   rake: -88°
Quality: azimuthalGap: 119°   stationPolarityCount: 9   misfit: 0.43   stationDistributionRatio: 0.65   rmsAngDiffAccPref: 51.83   fracAcc30degPref: 0.27   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765171873483.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: nan°
Nodal Plane 2: strike: nan°   dip: nan°   rake: nan°
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/_amp_aref
./hypo.1765171873483.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: nan°
Nodal Plane 2: strike: nan°   dip: nan°   rake: nan°
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/_amp_mwp
./hypo.1765171873483.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765171873483
Event info last updated: 2025.12.08-06:31:50 UTC
Event first association/location: 2025.12.08-05:33:05 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI