MANUAL Location - Area: Garfagnana , magnitude (ML): -0.4
2025-10-19 22:40:27 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-20 06:55:12

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Earthquake info - Manual location
Event - ID :251019223903
Magnitude (ML) :-0.4 +/- 0.1
Origin Time :2025-10-19 22:40:27.38 (UTC)
Location : Latitude: 43.946 N, Longitude: 10.543 E
Area :Garfagnana
Depth (km) :1.55
Distances (km) : 3.8 --- Borgo a Mozzano
8.2 --- Bagni di Lucca
8.4 --- Villa Basilica
10.7 --- Pescaglia
10.9 --- Fabbriche di Vallico
11.6 --- Lucca
11.6 --- Capannori
13.0 --- Pescia
13.2 --- Coreglia Antelminelli
13.3 --- Porcari
14.5 --- Montecarlo
15.0 --- Barga
15.1 --- Uzzano
15.5 --- Gallicano
16.7 --- Buggiano
16.7 --- Massa e Cozzile
17.2 --- Vergemoli
17.4 --- Molazzana
18.1 --- Altopascio
18.2 --- Massarosa

Quality location estimate: Erh: 0.5 km, Erz: 0.9 km, Nf: 14, Gap: 126 °, Rms: 0.07


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.
MAIMGU2025-10-19 22:40:28.8200.00700.081.042025-10-19 22:40:29.6710.0400-0.081.415.8
CARDGU2025-10-19 22:40:29.6400.00900.021.672025-10-19 22:40:31.3040.06610.021.4910.3
BDIIV2025-10-19 22:40:30.3400.0110-0.091.272025-10-19 22:40:32.6700.0400-0.041.6213.9
POPMGU2025-10-19 22:40:31.4500.01500.011.672025-10-19 22:40:34.4800.0902-0.011.3520.5
PIIIV2025-10-19 22:40:31.8630.0422-0.710.002025-10-19 22:40:35.0750.0852-1.400.0025.0
VLCMN2025-10-19 22:40:32.6000.02000.001.702025-10-19 22:40:36.8180.04000.380.0826.9
SARMGU2025-10-19 22:40:32.8180.0200-0.170.642025-10-19 22:40:37.6850.04000.570.0628.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MAIM GUHH-0.536.17e-25.8228
CARD GUHH-0.343.92e-210.3331
BDI IVHH-0.511.99e-213.918
POPM GUHH-0.272.80e-220.557
PII IVHH-0.554.96e-325.0183
VLC MNHH-0.246.26e-326.9332
SARM GUEH-0.436.03e-328.9337


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.
(°)
MAIM GUHHZ7.8342e-68.0181e-73.3670e-78.8038e-84.7426e-81.0629e-51.5723e-67.6437e-81.2963e-85.8228
MAIM GUHHN7.3040e-61.1039e-64.9121e-71.9559e-71.0333e-71.7499e-51.6212e-61.7822e-72.4189e-85.8228
MAIM GUHHE1.2005e-51.5534e-65.0338e-71.4175e-77.8752e-83.1863e-52.0423e-61.3124e-72.8722e-85.8228
CARD GUHHZ2.2891e-63.4340e-71.7593e-77.2940e-82.7240e-86.6707e-65.7403e-73.8170e-88.3857e-910.3331
CARD GUHHN6.2007e-61.0214e-64.0295e-71.1600e-74.8553e-81.8330e-51.3082e-68.9965e-82.1739e-810.3331
CARD GUHHE5.4955e-66.6097e-72.7220e-77.6397e-83.4944e-81.0527e-59.9743e-75.3535e-81.3241e-810.3331
BDI IVHHZ8.7253e-71.4047e-71.0702e-74.6049e-82.0195e-81.7418e-67.3218e-72.7531e-83.4592e-913.918
BDI IVHHN1.1078e-61.7134e-71.3703e-76.7138e-82.8731e-83.1410e-66.0236e-73.2034e-84.4601e-913.918
BDI IVHHE1.2269e-62.1885e-71.6376e-71.0597e-76.6631e-84.7176e-66.5579e-77.4303e-86.1584e-913.918
POPM GUHHZ2.8459e-62.8256e-71.0232e-72.5201e-81.4410e-83.9465e-66.2531e-72.1262e-84.2965e-920.557
POPM GUHHN1.9410e-64.3108e-72.5390e-75.6536e-83.2264e-84.8667e-61.1865e-65.4679e-81.0884e-820.557
POPM GUHHE1.4772e-62.3788e-72.0414e-74.8356e-82.4374e-83.3115e-61.1669e-63.7621e-86.4298e-920.557
PII IVHHZ3.1023e-76.8090e-83.6716e-81.2365e-86.4619e-95.7636e-71.9769e-78.8161e-91.3355e-925.0183
PII IVHHN3.1680e-74.8110e-84.4732e-81.4747e-85.8942e-98.5044e-72.4904e-78.5787e-91.4038e-925.0183
PII IVHHE3.3555e-76.1427e-84.7531e-81.7027e-86.7365e-91.3296e-62.5854e-79.4593e-91.7095e-925.0183
VLC MNHHZ5.0143e-78.1246e-83.6722e-81.8686e-81.9075e-88.6717e-71.5590e-73.6135e-83.9412e-926.9332
VLC MNHHN7.4944e-71.1334e-75.7352e-82.5099e-81.0555e-81.6747e-62.1879e-71.4534e-82.5893e-926.9332
VLC MNHHE8.8411e-79.3508e-84.4279e-81.6793e-82.0500e-81.4219e-61.8254e-73.8078e-83.1871e-926.9332
SARM GUEHZ2.3138e-73.8340e-82.4747e-89.1948e-94.8268e-98.5821e-71.2990e-76.2535e-99.1166e-1028.9337
SARM GUEHN3.5453e-76.5586e-83.5056e-83.3521e-81.0454e-87.2896e-71.1057e-71.1416e-81.5266e-928.9337
SARM GUEHE3.3145e-74.7684e-82.8351e-81.6943e-85.8100e-94.7562e-71.5088e-78.1525e-91.1333e-928.9337
*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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