MANUAL Location - Area: Garfagnana , magnitude (ML): -0.2
2026-08-04 17:38:59 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-08-04 20:41:47

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Earthquake info - Manual location
Event - ID :260804173809
Magnitude (ML) :-0.2 +/- 0.0
Origin Time :2026-08-04 17:38:59.986 (UTC)
Location : Latitude: 44.115 N, Longitude: 10.509 E
Area :Garfagnana
Depth (km) :11.02
Distances (km) : 3.8 --- Fosciandora
4.9 --- Barga
5.9 --- Coreglia Antelminelli
7.8 --- Castelnuovo di Garfagnana
8.0 --- Pieve Fosciana
8.3 --- Gallicano
8.5 --- Molazzana
8.8 --- Castiglione di Garfagnana
10.2 --- Villa Collemandina
12.1 --- Vergemoli
13.0 --- Abetone
13.3 --- Pievepelago
13.3 --- Fiumalbo
13.3 --- Bagni di Lucca
14.3 --- San Romano in Garfagnana
14.5 --- Fabbriche di Vallico
14.7 --- Camporgiano
14.8 --- Careggine
15.3 --- Borgo a Mozzano
17.3 --- Riolunato

Quality location estimate: Erh: 0.9 km, Erz: 0.8 km, Nf: 10, Gap: 160 °, Rms: 0.16


Manual location results
Station Net P arrival time P pick
err
P pick
weight
P res Nll
weight
S arrival time S pick
err
S pick
weight
S res Nll
weight
Dist.
BDIIV2026-08-04 17:39:02.8600.15870.021.552026-08-04 17:39:04.3000.0400-0.680.0015.0
VLCMN2026-08-04 17:39:03.2410.02000.300.812026-08-04 17:39:05.1390.0400-0.011.7115.9
SARMGU2026-08-04 17:39:03.3000.15770.241.232026-08-04 17:39:05.1420.0400-0.230.3216.7
POPMGU2026-08-04 17:39:04.8700.16770.320.982026-08-04 17:39:08.0260.0400-0.001.7024.2
MAIMGU2026-08-04 17:39:01.7370.0200-2.840.002026-08-04 17:39:08.0320.04000.021.7125.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BDI IVHH-0.213.42e-215.0130
VLC MNHH-0.201.78e-215.9297
SARM GUEH-0.222.66e-216.7312
MAIM GUHH-0.161.07e-225.2183


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)
PGV
(m/s)
IH 0*
(m)
IH 1*
(m)
IH 2*
(m)
Sa(T=0.10)
(g)
Sa(T=0.30)
(g)
Sa(T=1.00)
(g)
Sa(T=3.00)
(g)
Dist.
(km)
Azim.
(°)
BDI IVHHZ4.6914e-65.1223e-71.3320e-73.4614e-81.9262e-86.7768e-64.7676e-73.6817e-81.0407e-815.0130
BDI IVHHN4.5450e-64.4480e-72.9273e-79.4079e-84.8579e-88.4361e-61.8949e-67.8884e-81.2666e-815.0130
BDI IVHHE4.5619e-63.7498e-71.8726e-74.7400e-82.3726e-86.1136e-67.1672e-74.0880e-88.2984e-915.0130
VLC MNHHZ2.7492e-62.7818e-76.3983e-83.0761e-81.7566e-82.8973e-62.3826e-72.5324e-85.3938e-915.9297
VLC MNHHN4.0062e-64.0270e-71.1014e-75.6401e-82.8796e-84.0096e-65.8937e-74.9349e-88.5004e-915.9297
VLC MNHHE4.0222e-62.8762e-76.3495e-82.4807e-81.3308e-83.6205e-63.2360e-72.1127e-85.4473e-915.9297
SARM GUEHZ1.8179e-62.1708e-71.1278e-74.5086e-82.0375e-83.5336e-66.7792e-72.6722e-85.0254e-916.7312
SARM GUEHN2.4695e-63.6735e-72.1237e-71.2555e-74.7542e-87.1473e-66.6219e-77.1326e-89.8959e-916.7312
SARM GUEHE2.8738e-63.3148e-71.7113e-71.0901e-74.5131e-85.6952e-69.1955e-75.8858e-87.2414e-916.7312
POPM GUHHZ6.1405e-68.3563e-73.3418e-76.5044e-84.0082e-81.2058e-51.1351e-67.6106e-81.8608e-824.2111
POPM GUHHN1.0669e-52.0233e-69.4139e-71.9866e-71.1767e-73.3503e-52.4848e-62.1368e-74.3802e-824.2111
POPM GUHHE8.4776e-61.6184e-68.6805e-71.8015e-71.0056e-72.5452e-53.1362e-61.7508e-73.3729e-824.2111
MAIM GUHHZ9.2500e-77.6088e-84.1270e-82.5600e-81.4473e-81.0645e-62.2537e-71.5952e-81.9996e-925.2183
MAIM GUHHN9.4890e-71.2331e-76.5771e-83.5098e-82.0610e-81.4517e-62.7344e-72.1765e-82.8329e-925.2183
MAIM GUHHE1.0496e-61.2639e-77.4355e-86.7513e-85.5584e-81.7075e-63.3470e-76.0354e-85.8058e-925.2183
*IH (Housner Intensity) calculated on the velocity spectrum (SV) between 0.1 and 0.5 s (IH0), 0.1 and 1.0 s (IH1), 0.1 and 1.5 s (IH2)

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