MANUAL Location - Area: Riviera di ponente , magnitude (ML): 0.8
2026-10-19 10:31:47 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-10-20 09:13:39

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Earthquake info - Manual location
Event - ID :261019103031
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2026-10-19 10:31:47.974 (UTC)
Location : Latitude: 44.218 N, Longitude: 8.313 E
Area :Riviera di ponente
Depth (km) :6.15
Distances (km) : 1.1 --- Orco Feglino
1.9 --- Calice Ligure
4.1 --- Rialto
4.3 --- Vezzi Portio
5.8 --- Magliolo
5.8 --- Tovo San Giacomo
5.9 --- Finale Ligure
6.4 --- Borgio Verezzi
7.3 --- Giustenice
7.9 --- Pietra Ligure
8.3 --- Noli
8.3 --- Mallare
8.4 --- Spotorno
9.3 --- Bormida
10.7 --- Bergeggi
10.8 --- Loano
11.3 --- Quiliano
11.3 --- Vado Ligure
11.3 --- Osiglia
11.7 --- Boissano

Quality location estimate: Erh: 1.3 km, Erz: 1.3 km, Nf: 34, Gap: 167 °, Rms: 0.29


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.
QLNOIV2026-10-19 10:31:51.3900.00600.001.912026-10-19 10:31:53.2100.2116-0.610.7913.8
SVAIT2026-10-19 10:31:51.8880.02000.011.862026-10-19 10:31:54.2010.0400-0.470.8516.6
ROROGU2026-10-19 10:31:52.5100.01100.031.792026-10-19 10:31:55.0690.0651-0.610.7823.8
PVTIT2026-10-19 10:31:54.6600.0200-0.101.412026-10-19 10:31:58.9380.0400-0.810.5037.4
GBOSGU2026-10-19 10:31:54.7280.02000.021.712026-10-19 10:31:58.7190.1013-0.630.7738.4
PCPGU2026-10-19 10:31:55.7700.02010.430.862026-10-19 10:32:00.5800.1805-0.061.2941.0
MGROGU2026-10-19 10:31:55.9720.0200-0.350.822026-10-19 10:32:01.5690.3788-0.850.5545.4
IMIGU2026-10-19 10:31:56.7200.02000.210.772026-10-19 10:32:02.8000.0400-0.041.4348.4
SAOFFR2026-10-19 10:32:00.2200.02000.460.772026-10-19 10:32:07.8030.0400-0.450.9466.1
ENRGU2026-10-19 10:32:00.9030.02000.520.642026-10-19 10:32:08.4900.2026-0.420.9971.6
TURFFR2026-10-19 10:32:02.4710.02000.400.842026-10-19 10:32:11.3090.0400-0.770.6078.5
STVGU2026-10-19 10:32:02.1260.02000.580.502026-10-19 10:32:10.2310.3918-0.630.7678.9
VINDIV2026-10-19 10:32:03.9350.02000.211.062026-10-19 10:32:14.1650.0400-0.391.0291.3
PZZGU2026-10-19 10:32:05.1100.0482-0.251.132026-10-19 10:32:16.2300.4078-1.420.20100.6
BHBGU2026-10-19 10:32:06.2100.05220.261.022026-10-19 10:32:16.6400.1604-1.800.05108.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
QLNO IVHH0.612.11e-113.813
SVA ITHG0.882.80e-116.650
RORO GUHH1.263.52e-123.8239
PVT ITHN1.131.09e-137.4238
PCP GUHH0.653.33e-241.027
MGRO GUHH0.511.81e-245.4244
IMI GUHH0.592.54e-248.4225
SAOF FRHH0.671.19e-266.1247
TURF FRHH0.708.72e-378.5250
STV GUHH0.961.06e-278.9273
PZZ GUHH0.931.41e-2100.6289
BHB GUHH1.017.72e-3108.0310


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.
(°)
QLNO IVHHZ5.8566e-56.2548e-66.1278e-72.0487e-71.3279e-72.1976e-52.5472e-62.0875e-73.1935e-813.813
QLNO IVHHN6.0488e-54.4796e-61.6995e-64.4856e-72.7689e-74.8036e-57.2338e-64.7370e-79.6774e-813.813
QLNO IVHHE7.1954e-55.5925e-61.3164e-64.7953e-72.5699e-76.5582e-55.5083e-64.6270e-79.8726e-813.813
SVA ITHGZ2.9798e-53.2592e-61.1654e-64.5213e-72.4210e-75.1109e-55.9730e-63.8346e-76.7568e-816.650
SVA ITHGN4.0816e-55.3974e-62.4604e-67.3710e-73.0976e-71.0177e-49.6506e-65.1210e-71.2507e-716.650
SVA ITHGE3.8166e-54.8081e-62.1787e-66.5741e-73.3034e-71.2872e-48.4989e-65.9923e-71.2396e-716.650
RORO GUHHZ1.5965e-52.1217e-66.8910e-71.4604e-79.2192e-83.1712e-52.3374e-61.4807e-73.7163e-823.8239
RORO GUHHN3.7898e-57.9205e-62.8537e-66.8292e-73.8634e-71.0736e-41.0282e-56.8426e-71.6623e-723.8239
RORO GUHHE2.4699e-53.2103e-61.1626e-62.7468e-71.4719e-78.3883e-53.1984e-62.8013e-76.9866e-823.8239
PVT ITHNZ9.2073e-61.1536e-64.0561e-72.5537e-71.4921e-71.7273e-51.8623e-61.5558e-72.9069e-837.4238
PVT ITHNN1.5115e-51.7008e-65.4329e-72.8930e-71.7109e-72.3002e-51.9485e-62.2316e-73.8362e-837.4238
PVT ITHNE1.8406e-51.9297e-67.5218e-74.1245e-71.9312e-72.4377e-53.5974e-62.9319e-74.5475e-837.4238
GBOS GUHHZ9.3096e-61.2926e-65.6250e-71.6163e-78.5978e-82.5211e-52.5212e-61.2877e-72.4365e-838.4274
GBOS GUHHN8.1414e-61.0148e-65.8023e-72.2971e-71.0383e-71.8077e-52.8506e-61.3954e-72.2558e-838.4274
GBOS GUHHE1.0293e-51.3877e-67.0717e-72.4629e-71.1718e-71.7822e-52.8589e-62.0286e-73.8409e-838.4274
PCP GUHHZ8.7623e-67.5011e-71.4116e-74.3339e-82.5197e-86.4947e-65.6564e-74.1905e-88.3359e-941.027
PCP GUHHN6.4677e-65.2899e-71.5287e-74.6092e-82.7727e-87.3062e-65.0784e-76.1306e-81.0650e-841.027
PCP GUHHE6.7427e-67.5119e-72.8930e-76.8024e-83.8899e-81.5850e-58.2620e-76.9575e-81.5775e-841.027
MGRO GUHHZ1.2477e-61.7990e-71.6338e-76.4983e-83.4345e-82.5905e-61.1525e-65.1049e-85.0332e-945.4244
MGRO GUHHN2.6830e-63.4203e-71.5629e-77.1166e-84.8129e-83.7869e-67.0767e-76.1045e-88.6540e-945.4244
MGRO GUHHE2.4386e-62.7427e-71.3466e-76.4138e-83.8986e-85.9329e-66.3123e-75.9448e-87.1535e-945.4244
IMI GUHHZ1.6030e-61.8677e-71.2081e-76.0546e-83.9789e-83.4413e-67.9418e-75.4484e-85.0041e-948.4225
IMI GUHHN3.9000e-64.5810e-72.7316e-78.6114e-85.0571e-89.1709e-61.0496e-68.1357e-81.0438e-848.4225
IMI GUHHE2.5922e-63.3323e-71.8836e-76.6936e-83.5629e-84.3111e-66.3184e-75.4171e-87.0483e-948.4225
SAOF FRHHZ3.5063e-77.4566e-85.9494e-82.9505e-81.7135e-87.4535e-72.8400e-72.7814e-82.2734e-966.1247
SAOF FRHHN5.5929e-78.3152e-86.0103e-83.0718e-81.8984e-81.4592e-62.9623e-72.7358e-81.8383e-966.1247
SAOF FRHHE5.8225e-71.1160e-77.2796e-86.4524e-86.3871e-81.5669e-63.4295e-78.4637e-81.4657e-866.1247
ENR GUHHZ5.1369e-66.7082e-72.7533e-71.0044e-75.4478e-81.7027e-51.0475e-68.9634e-81.7946e-871.6271
ENR GUHHN1.3180e-51.4470e-64.8179e-71.5464e-78.3150e-82.4708e-51.8245e-61.4418e-73.0583e-871.6271
ENR GUHHE9.0591e-69.7409e-72.9119e-78.0085e-84.9102e-81.9292e-59.6154e-79.4263e-81.9124e-871.6271
TURF FRHHZ5.2215e-76.8380e-84.4040e-83.0287e-82.2164e-81.5030e-61.8149e-73.3353e-82.3109e-978.5250
TURF FRHHN5.8849e-78.7163e-86.5056e-82.8840e-83.2171e-81.4214e-63.1478e-74.4482e-83.1832e-978.5250
TURF FRHHE6.3274e-71.0531e-76.3593e-84.1872e-83.0064e-82.2398e-63.3031e-73.9226e-83.8249e-978.5250
STV GUHHZ1.3805e-61.6833e-78.5537e-82.6187e-81.3443e-84.0441e-63.3331e-71.9077e-83.1075e-978.9273
STV GUHHN1.5279e-62.0579e-79.9528e-83.2006e-82.0060e-84.0273e-65.0193e-73.1540e-84.3281e-978.9273
STV GUHHE1.5578e-62.0008e-71.0002e-72.7280e-81.7108e-83.6350e-66.2253e-73.5557e-84.8589e-978.9273
PZZ GUHHZ7.5749e-71.2965e-79.5101e-83.5107e-82.2513e-82.2885e-64.6034e-73.2884e-83.9766e-9100.6289
PZZ GUHHN6.8585e-71.3871e-71.0614e-75.0656e-82.5729e-82.8984e-67.9804e-73.0020e-85.3264e-9100.6289
PZZ GUHHE8.3327e-71.4805e-71.1415e-74.3599e-82.7682e-82.8775e-66.2449e-73.2403e-83.9081e-9100.6289
BHB GUHHZ1.9620e-62.4802e-75.9877e-82.7831e-82.4621e-81.8135e-61.8626e-75.2283e-83.7993e-9108.0310
BHB GUHHN1.1620e-61.4038e-75.9966e-82.4080e-81.6633e-81.2419e-63.1803e-73.1948e-82.4081e-9108.0310
BHB GUHHE1.5104e-61.0843e-76.1925e-83.0737e-82.0508e-81.0355e-62.4750e-74.2741e-82.9179e-9108.0310
*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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