Early-est:     Crimea Region, Ukraine    2025.12.12-17:13:18.54    q:A      mb:4.4    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1765559597499.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765559597499.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765559597499.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765559597499.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: 4.4 [24]    Mwp: - [0]    Mwpd: - [0]
Region: Crimea Region, Ukraine
Origin Time: 2025.12.12-17:13:18.54 UTC
Hypocenter: lat: 44.43°  lon: 33.33°  [+/-3km]    depth: 20km  [+/-6km]
Location Quality: qualityCode:  A     stdErr: 1.0s   assocPhases: 38   usedPhases: 35
minDist: 2.5°   maxDist: 17.6°   AzGap: 122°   2ndAzGap: 125°   atten: -1.57 [+/-0.32]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 2km   maxHorUnc: 3km   azMaxHorUnc: 179°
68%ConfEllipsoid:   semiMajorAxisLength: 6km   majorAxisAzimuth: 340°   majorAxisPlunge: 83°   semiIntermediateAxisLength: 3km   intermediateAxisAzimuth: 180°   intermediateAxisPlunge: 6°   semiMinorAxisLength: 3km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.3 [18]    Td: 0.3Xs [2]    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:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       20km
       20km
       20km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1765559597499.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 65°   dip: 26°   rake: -168°
Nodal Plane 2: strike: 324°   dip: 85°   rake: -64°
Quality: azimuthalGap: -1°   stationPolarityCount: 25   misfitWeightCount: 4.8   misfit: 0.20   stationDistributionRatio: 0.53   meanDistP: 52.5   meanDistT: 37.4   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1765559597499.mech.fmamp_polarity.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: 168°   stationPolarityCount: 25   misfit: 0.99   stationDistributionRatio: 0.78   rmsAngDiffAccPref: 26.13   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765559597499.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (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/_amp_aref
./hypo.1765559597499.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (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/_amp_mwp
./hypo.1765559597499.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765559597499
Event info last updated: 2025.12.12-18:14:07 UTC
Event first association/location: 2025.12.12-17:16:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI