MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.3
2025-10-19 19:22:51 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-20 06:53:50

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Earthquake info - Manual location
Event - ID :251019192210
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2025-10-19 19:22:51.143 (UTC)
Location : Latitude: 44.426 N, Longitude: 7.278 E
Area :Alpi Cozie
Depth (km) :11.02
Distances (km) : 0.7 --- Pradleves
4.0 --- Monterosso Grana
5.6 --- Castelmagno
5.8 --- Cartignano
7.3 --- San Damiano Macra
7.7 --- Roccabruna
7.9 --- Montemale di Cuneo
8.2 --- Dronero
8.2 --- Valgrana
10.1 --- Celle di Macra
10.4 --- Villar San Costanzo
11.5 --- Macra
11.9 --- Caraglio
12.3 --- Valloriate
12.3 --- Demonte
12.7 --- Rittana
13.3 --- Bernezzo
13.3 --- Aisone
14.2 --- Gaiola
14.2 --- Valmala

Quality location estimate: Erh: 0.7 km, Erz: 1 km, Nf: 24, Gap: 116 °, Rms: 0.27


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.
VINDIV2025-10-19 19:22:54.8690.02000.051.232025-10-19 19:22:56.9310.0400-0.431.2218.9
PZZGU2025-10-19 19:22:55.0800.0090-0.031.402025-10-19 19:22:57.5000.0511-0.441.1620.0
STVGU2025-10-19 19:22:55.5190.0200-0.011.432025-10-19 19:22:58.1100.0641-0.441.1423.7
ENRGU2025-10-19 19:22:56.1880.02000.041.292025-10-19 19:22:59.4700.0772-0.131.1827.4
ISOFR2025-10-19 19:22:57.8820.02000.390.032025-10-19 19:23:01.5280.1002-0.241.2134.6
SURFFR2025-10-19 19:22:58.2400.0190-0.261.102025-10-19 19:23:02.9650.1173-0.890.1939.0
BHBGU2025-10-19 19:22:59.2520.0200-0.031.312025-10-19 19:23:04.7640.0400-0.131.2146.9
GBOSGU2025-10-19 19:23:00.1200.05920.001.222025-10-19 19:23:05.9040.1002-0.391.0850.6
TURFFR2025-10-19 19:23:00.9220.02000.160.572025-10-19 19:23:07.2400.0400-0.391.1152.1
MLIGIV2025-10-19 19:23:01.6720.0200-0.371.232025-10-19 19:23:08.5990.0400-1.220.0859.4
MGROGU2025-10-19 19:23:01.7690.0200-0.401.192025-10-19 19:23:09.1220.0400-0.930.1961.3
IMIGU2025-10-19 19:23:04.0360.0200-0.341.212025-10-19 19:23:13.4230.1002-0.401.0176.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.125.98e-220.0305
STV GUHH0.232.24e-223.7169
GBOS GUHH0.661.06e-250.6114
MGRO GUHH0.214.87e-361.3135
IMI GUHH0.396.15e-376.4139


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.
(°)
PZZ GUHHZ6.5377e-61.2501e-65.3472e-71.6752e-78.1984e-81.4247e-51.5096e-61.3541e-73.0146e-820.0305
PZZ GUHHN7.2989e-61.0663e-66.0362e-72.3299e-71.0368e-71.5985e-53.0081e-61.6386e-73.0353e-820.0305
PZZ GUHHE4.5391e-67.3154e-74.8514e-71.2367e-76.3655e-81.1327e-52.4708e-69.5754e-81.6542e-820.0305
STV GUHHZ3.4562e-63.4552e-71.1074e-72.7418e-81.7646e-84.3330e-64.2497e-72.6416e-87.8026e-923.7169
STV GUHHN3.8081e-63.5335e-71.1817e-74.0142e-82.6646e-86.1259e-64.6334e-74.7092e-87.9793e-923.7169
STV GUHHE4.2950e-64.9953e-71.7069e-75.6378e-83.3963e-87.4274e-66.7025e-76.0760e-81.1591e-823.7169
ENR GUHHZ1.6098e-51.5061e-63.6461e-71.1803e-76.7086e-82.8475e-51.5661e-61.4099e-73.2537e-827.4153
ENR GUHHN4.9364e-54.9583e-68.4877e-72.6372e-71.6942e-77.2957e-53.6800e-63.9770e-79.7621e-827.4153
ENR GUHHE3.4761e-53.4422e-66.1632e-71.6154e-79.2159e-84.2631e-52.1392e-62.1730e-75.5702e-827.4153
ISO FRHHZ1.2112e-62.2917e-78.7180e-82.8634e-81.8038e-83.0638e-63.3721e-72.5524e-84.6552e-934.6214
ISO FRHHN1.1811e-61.5698e-75.0463e-81.7818e-81.0933e-82.2227e-61.9723e-71.8265e-83.8014e-934.6214
ISO FRHHE1.2118e-61.5593e-74.9298e-81.4487e-87.6739e-91.3068e-62.1489e-71.2080e-83.0029e-934.6214
BHB GUHHZ5.5958e-76.8126e-82.9179e-81.5644e-82.1120e-81.6002e-61.1218e-74.9759e-82.2376e-946.9359
BHB GUHHN7.1083e-78.6167e-83.5302e-81.3709e-81.1998e-81.4190e-61.3872e-72.5165e-81.8582e-946.9359
BHB GUHHE6.9934e-77.4730e-82.8621e-81.2470e-81.3351e-81.6576e-61.1705e-73.5666e-82.3587e-946.9359
GBOS GUHHZ6.8463e-71.1788e-77.6448e-81.7861e-81.1375e-82.5577e-62.6270e-71.6882e-82.8690e-950.6114
GBOS GUHHN9.4979e-71.7013e-78.2992e-83.4021e-81.4629e-82.7989e-64.9507e-71.8866e-83.7193e-950.6114
GBOS GUHHE7.4113e-71.2563e-78.1387e-82.7919e-81.3907e-82.5985e-64.9597e-72.2789e-82.8884e-950.6114
TURF FRHHZ3.2302e-74.3284e-82.5380e-81.5050e-89.7560e-94.1776e-71.5299e-71.3077e-81.4421e-952.1170
TURF FRHHN3.6070e-74.7504e-83.3496e-81.2528e-88.5062e-99.6676e-71.5095e-71.1140e-81.6142e-952.1170
TURF FRHHE3.2532e-74.1037e-82.4228e-81.3669e-81.0596e-85.4330e-71.1357e-71.3131e-81.1862e-952.1170
MGRO GUHHZ2.4409e-73.6524e-82.5727e-81.3880e-87.3788e-95.8026e-71.6741e-71.1724e-81.1517e-961.3135
MGRO GUHHN4.0732e-76.3542e-84.3524e-81.4525e-81.3066e-81.3568e-62.7047e-72.0986e-81.7019e-961.3135
MGRO GUHHE3.9182e-76.1075e-83.1230e-81.6820e-89.8909e-99.4920e-71.9863e-71.6380e-81.4079e-961.3135
IMI GUHHZ3.4955e-74.0441e-82.1892e-81.1354e-87.7963e-98.3901e-71.2122e-71.0294e-81.1682e-976.4139
IMI GUHHN1.3405e-61.6750e-74.8525e-82.2031e-81.8537e-82.6441e-61.7185e-72.8889e-83.4003e-976.4139
IMI GUHHE5.2610e-77.7090e-83.0650e-81.5196e-81.0393e-81.1454e-61.5506e-71.4738e-81.8410e-976.4139
*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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