Early-est:     Central Alaska    2025.08.06-18:38:57.24    q:A      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754505536793.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754505536793.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754505536793.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* [62]    Mwp: 4.6X [1]    Mwpd: - [0]
Region: Central Alaska
Origin Time: 2025.08.06-18:38:57.24 UTC
Hypocenter: lat: 62.49°  lon: -151.21°  [+/-15km]    depth: 74km  [+/-17km]
Location Quality: qualityCode:  A     stdErr: 1.0s   assocPhases: 98   usedPhases: 76
minDist: 1.3°   maxDist: 150.8°   AzGap: 54°   2ndAzGap: 106°   atten: -0.88 [+/-0.25]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 67°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 245°   majorAxisPlunge: 37°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 129°   intermediateAxisPlunge: 30°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.5 [28]    Td: 1.2Xs [1]    Td*T50Ex: - [0]    To: 1.6s [27]
Closest plate boundaries:
Subduction geometry:    Zone: Alaska-Aleutians: DEBUG: error: [Errno 2] No such file or directory: 'gmt'    Slab depth at epicenter: error: evaluating slab depth: -999.9
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:
       74km
       74km
       74km
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.1754505536793.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 186°   dip: 33°   rake: -125°
Nodal Plane 2: strike: 46°   dip: 64°   rake: -70°
Quality: azimuthalGap: -1°   stationPolarityCount: 67   misfitWeightCount: 14.1   misfit: 0.19   stationDistributionRatio: 0.62   meanDistP: 43.8   meanDistT: 40.1   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754505536793.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.1754505536793.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 359°   dip: 89°   rake: -161°
Nodal Plane 2: strike: 268°   dip: 71°   rake: -1°
Quality: azimuthalGap: 83°   stationPolarityCount: 67   misfit: 0.40   stationDistributionRatio: 0.64   rmsAngDiffAccPref: 23.65   fracAcc30degPref: 0.84   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754505536793.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754505536793
Event info last updated: 2025.08.06-19:37:01 UTC
Event first association/location: 2025.08.06-18:41:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA