Early-est:     Azores Islands Region    2025.08.02-16:41:28.71    q:A      mb:5.1*    Mwp:5.5    Mwpd:-    Td*T50Ex:1.0     fmamp_polarity:./hypo.1754152886418.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754152886418.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754152886418.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: 5.1* [88]    Mwp: 5.5 [9]    Mwpd: 5.6Xinv [8]
Region: Azores Islands Region
Origin Time: 2025.08.02-16:41:28.71 UTC
Hypocenter: lat: 37.34°  lon: -23.65°  [+/-25km]    depth: 15km  [+/-22km]
Location Quality: qualityCode:  A     stdErr: 1.4s   assocPhases: 149   usedPhases: 84
minDist: 1.5°   maxDist: 139.3°   AzGap: 37°   2ndAzGap: 65°   atten: -1.10 [+/-0.25]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 18km   maxHorUnc: 25km   azMaxHorUnc: 61°
68%ConfEllipsoid:   semiMajorAxisLength: 31km   majorAxisAzimuth: 239°   majorAxisPlunge: 5°   semiIntermediateAxisLength: 25km   intermediateAxisAzimuth: 144°   intermediateAxisPlunge: 44°   semiMinorAxisLength: 18km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [61]    Td: 2.4s [24]    Td*T50Ex: 1.0 [24]    To: 14.6s [58]
Closest plate boundaries:
   Eurasia - Africa [oceanic spreading ridge]: distance: ~70km
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:
   1.0
   1.0
   1.0
Td*To:
     35.0
     35.0
     35.0
Mwp magnitude:
       5.5
       5.5
       5.5
Hypocenter depth:
       15km
       15km
       15km
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.1754152886418.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 95°   dip: 13°   rake: -178°
Nodal Plane 2: strike: 3°   dip: 90°   rake: -77°
Quality: azimuthalGap: -1°   stationPolarityCount: 73   misfitWeightCount: 9.8   misfit: 0.14   stationDistributionRatio: 0.65   meanDistP: 32.1   meanDistT: 33.0   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754152886418.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.1754152886418.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 276°   dip: 10°   rake: 8°
Nodal Plane 2: strike: 178°   dip: 89°   rake: 100°
Quality: azimuthalGap: 65°   stationPolarityCount: 73   misfit: 0.12   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 28.73   fracAcc30degPref: 0.67   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754152886418.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754152886418
Event info last updated: 2025.08.02-17:40:03 UTC
Event first association/location: 2025.08.02-16:45:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA