Early-est:     Northwestern Caucasus    2026.02.09-23:21:06.49    q:A      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:0.7     fmamp_polarity:./hypo.1770679270816.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1770679270816.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1770679270816.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: 4.9* [65]    Mwp: - [0]    Mwpd: - [0]
Region: Northwestern Caucasus
Origin Time: 2026.02.09-23:21:06.49 UTC
Hypocenter: lat: 44.93°  lon: 37.64°  [+/-7km]    depth: 9km  [+/-6km]
Location Quality: qualityCode:  A     stdErr: 1.7s   assocPhases: 102   usedPhases: 79
minDist: 3.4°   maxDist: 147.1°   AzGap: 38°   2ndAzGap: 71°   atten: -0.85 [+/-0.15]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 6km   maxHorUnc: 7km   azMaxHorUnc: 33°
68%ConfEllipsoid:   semiMajorAxisLength: 8km   majorAxisAzimuth: 212°   majorAxisPlunge: 4°   semiIntermediateAxisLength: 7km   intermediateAxisAzimuth: 122°   intermediateAxisPlunge: 11°   semiMinorAxisLength: 6km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.6 [53]    Td: 1.2s [5]    Td*T50Ex: 0.7 [5]    To: 21.7s [48]
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:
   0.7
   0.7
   0.7
Td*To:
     26.0
     26.0
     26.0
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       9km
       9km
       9km
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.1770679270816.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 339°   dip: 63°   rake: -19°
Nodal Plane 2: strike: 78°   dip: 73°   rake: -152°
Quality: azimuthalGap: -1°   stationPolarityCount: 67   misfitWeightCount: 15.4   misfit: 0.21   stationDistributionRatio: 0.49   meanDistP: 36.8   meanDistT: 48.9   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1770679270816.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.1770679270816.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 122°   dip: 50°   rake: -161°
Nodal Plane 2: strike: 19°   dip: 75°   rake: -42°
Quality: azimuthalGap: 37°   stationPolarityCount: 67   misfit: 0.30   stationDistributionRatio: 0.60   rmsAngDiffAccPref: 42.65   fracAcc30degPref: 0.44   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1770679270816.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1770679270816
Event info last updated: 2026.02.10-00:20:00 UTC
Event first association/location: 2026.02.09-23:24:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA