Early-est:     Costa Rica    2025.08.01-19:33:12.29    q:B      mb:4.5*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754076792595.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754076792595.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754076792595.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: 4.5* [17]    Mwp: - [0]    Mwpd: - [0]
Region: Costa Rica
Origin Time: 2025.08.01-19:33:12.29 UTC
Hypocenter: lat: 10.23°  lon: -84.24°  [+/-21km]    depth: 124km  [+/-19km]
Location Quality: qualityCode:  B     stdErr: 1.2s   assocPhases: 66   usedPhases: 24
minDist: 0.3°   maxDist: 151.6°   AzGap: 73°   2ndAzGap: 87°   atten: -1.52 [+/-0.48]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 21km   azMaxHorUnc: 164°
68%ConfEllipsoid:   semiMajorAxisLength: 28km   majorAxisAzimuth: 164°   majorAxisPlunge: 24°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 258°   intermediateAxisPlunge: 9°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.2 [7]    Td: 1.3Xs [1]    Td*T50Ex: - [0]    To: 1.6s [7]
Closest plate boundaries:
   Panama - Caribbean [continental convergent boundary]: distance: ~30km
   Cocos \ Panama [subduction zone]: distance: ~170km
   Caribbean / Cocos [subduction zone]: distance: ~260km
Subduction geometry:    Zone: Central America: 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?:
 YES (170km)
 YES (30km)
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       124km
       124km
       124km
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.1754076792595.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 21°   dip: 62°   rake: 159°
Nodal Plane 2: strike: 122°   dip: 71°   rake: 30°
Quality: azimuthalGap: -1°   stationPolarityCount: 21   misfitWeightCount: 6.2   misfit: 0.06   stationDistributionRatio: 0.54   meanDistP: 45.2   meanDistT: 37.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754076792595.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.1754076792595.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 14°   dip: 62°   rake: 162°
Nodal Plane 2: strike: 113°   dip: 74°   rake: 29°
Quality: azimuthalGap: 116°   stationPolarityCount: 21   misfit: 0.31   stationDistributionRatio: 0.85   rmsAngDiffAccPref: 42.39   fracAcc30degPref: 0.44   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754076792595.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754076792595
Event info last updated: 2025.08.01-20:32:04 UTC
Event first association/location: 2025.08.01-19:35:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA