Early-est:     Northern Italy    2026.08.16-03:49:28.75    q:A      mb:4.3*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786852167543.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786852167543.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786852167543.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: 4.3* [6]    Mwp: - [0]    Mwpd: - [0]
Region: Northern Italy
Origin Time: 2026.08.16-03:49:28.75 UTC
Hypocenter: lat: 44.07°  lon: 9.96°  [+/-3km]    depth: 90km  [+/-8km]
Location Quality: qualityCode:  A     stdErr: 0.9s   assocPhases: 27   usedPhases: 17
minDist: 1.7°   maxDist: 51.3°   AzGap: 86°   2ndAzGap: 150°   atten: -0.60 [+/-0.71]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 3km   maxHorUnc: 3km   azMaxHorUnc: 62°
68%ConfEllipsoid:   semiMajorAxisLength: 8km   majorAxisAzimuth: 319°   majorAxisPlunge: 84°   semiIntermediateAxisLength: 4km   intermediateAxisAzimuth: 60°   intermediateAxisPlunge: 1°   semiMinorAxisLength: 4km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 68%
T50Ex: 0.8 [4]    Td: -s [0]    Td*T50Ex: - [0]    To: 151.2s [4]
Closest plate boundaries:
   Eurasia \ Africa [subduction zone]: distance: ~560km
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:
 68%
 68%
 68%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       90km
       90km
       90km
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.1786852167543.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 147°   dip: 69°   rake: 165°
Nodal Plane 2: strike: 243°   dip: 76°   rake: 21°
Quality: azimuthalGap: -1°   stationPolarityCount: 16   misfitWeightCount: 5.6   misfit: 0.06   stationDistributionRatio: 0.35   meanDistP: 45.9   meanDistT: 49.0   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786852167543.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.1786852167543.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 332°   dip: 87°   rake: -161°
Nodal Plane 2: strike: 241°   dip: 71°   rake: -4°
Quality: azimuthalGap: 111°   stationPolarityCount: 16   misfit: 0.32   stationDistributionRatio: 0.32   rmsAngDiffAccPref: 40.97   fracAcc30degPref: 0.41   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786852167543.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786852167543
Event info last updated: 2026.08.16-04:48:02 UTC
Event first association/location: 2026.08.16-03:51:03 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA