MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.5
2026-02-03 14:52:43 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-02-04 10:26:10

RSNI Logo

Earthquake info - Manual location
Event - ID :260203145218
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2026-02-03 14:52:43.703 (UTC)
Location : Latitude: 44.336 N, Longitude: 7.274 E
Area :Alpi Marittime
Depth (km) :17.07
Distances (km) : 2.8 --- Demonte
5.0 --- Aisone
7.9 --- Valloriate
8.5 --- Vinadio
9.0 --- Monterosso Grana
9.3 --- Moiola
9.3 --- Pradleves
9.6 --- Castelmagno
10.1 --- Rittana
10.5 --- Gaiola
11.6 --- Valdieri
11.9 --- Valgrana
13.2 --- Roccasparvera
13.9 --- Montemale di Cuneo
14.0 --- Bernezzo
14.4 --- Entracque
15.2 --- Caraglio
15.8 --- Cartignano
15.8 --- Vignolo
15.9 --- Sambuco

Quality location estimate: Erh: 1.7 km, Erz: 1.2 km, Nf: 24, Gap: 103 °, Rms: 0.35


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.
STVGU2026-02-03 14:52:47.5700.00900.021.522026-02-03 14:52:49.6200.0461-0.571.1321.0
ENRGU2026-02-03 14:52:48.0630.0200-0.061.382026-02-03 14:52:50.4800.1845-0.690.8724.6
PZZGU2026-02-03 14:52:49.2100.1135-0.031.322026-02-03 14:52:52.6890.0400-0.500.9829.3
ISOFR2026-02-03 14:52:49.8400.01500.660.012026-02-03 14:52:52.9160.04000.031.3930.5
SURFFR2026-02-03 14:52:51.7180.0200-0.051.422026-02-03 14:52:57.0140.6209-0.520.6943.5
TURFFR2026-02-03 14:52:52.2970.02000.270.342026-02-03 14:52:57.2770.0400-0.660.9844.6
SAOFFR2026-02-03 14:52:52.6390.02000.081.292026-02-03 14:52:58.2020.0400-0.601.0148.1
GBOSGU2026-02-03 14:52:52.5700.04220.121.062026-02-03 14:52:57.9090.1354-0.540.9549.6
MVIFFR2026-02-03 14:52:53.2920.0200-0.210.762026-02-03 14:52:59.7620.0400-0.820.6552.7
BHBGU2026-02-03 14:52:52.9080.0200-0.641.092026-02-03 14:52:59.7640.0400-0.700.8958.2
ESCAFR2026-02-03 14:52:54.5630.02000.101.182026-02-03 14:53:01.7400.1785-0.330.9859.4
IMIGU2026-02-03 14:52:55.8600.0200-0.091.202026-02-03 14:53:04.1900.1975-0.510.9270.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
STV GUHH0.759.28e-221.0158
ENR GUHH0.861.80e-124.6136
PZZ GUHH0.022.31e-229.3327
ISO FRHH0.362.74e-230.5227
TURF FRHH0.501.80e-244.6167
BHB GUHH0.468.79e-358.2359
ESCA FRHH0.601.26e-259.4172
IMI GUHH0.641.30e-270.7134


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.
(°)
STV GUHHZ2.2213e-52.1954e-63.6170e-71.4692e-79.4127e-82.0637e-51.6645e-61.9894e-75.2361e-821.0158
STV GUHHN2.1284e-52.5371e-65.0186e-71.3467e-78.2444e-83.1575e-51.8952e-61.8843e-75.0823e-821.0158
STV GUHHE1.9493e-52.3169e-65.8500e-71.9915e-71.3403e-72.1593e-52.2875e-62.4330e-75.2129e-821.0158
ENR GUHHZ4.7649e-53.7693e-64.0446e-71.4692e-79.7541e-82.3022e-51.4279e-62.5278e-76.6556e-824.6136
ENR GUHHN5.9758e-55.6996e-66.2762e-71.8401e-71.0933e-73.3413e-52.6924e-62.9130e-78.3310e-824.6136
ENR GUHHE9.0536e-58.3351e-68.9965e-73.2223e-71.8960e-74.1949e-54.0460e-65.2226e-71.2982e-724.6136
PZZ GUHHZ2.9452e-63.5981e-71.6071e-75.1525e-82.9321e-85.8395e-67.4090e-74.9630e-88.7258e-929.3327
PZZ GUHHN4.2756e-64.7412e-71.4966e-75.6921e-82.8211e-87.6503e-64.7339e-75.0027e-89.4748e-929.3327
PZZ GUHHE3.3441e-64.7957e-71.8787e-75.7612e-83.7134e-88.2378e-67.7887e-75.8008e-81.1120e-829.3327
ISO FRHHZ8.7725e-67.6021e-71.1612e-74.3390e-82.7193e-85.3310e-64.1459e-74.6837e-81.0654e-830.5227
ISO FRHHN5.9744e-68.1484e-71.7078e-74.8875e-82.9953e-89.3438e-66.6645e-75.7545e-81.6697e-830.5227
ISO FRHHE4.8108e-64.9829e-71.4343e-74.2350e-82.6263e-86.0478e-66.3143e-74.8034e-89.2321e-930.5227
TURF FRHHZ8.2411e-71.5730e-71.0306e-74.0733e-82.2544e-82.6409e-66.2240e-72.9647e-84.1119e-944.6167
TURF FRHHN1.5006e-61.8674e-71.1082e-73.6582e-81.9891e-84.0322e-65.6065e-73.8118e-84.6873e-944.6167
TURF FRHHE1.2971e-62.9213e-71.3729e-75.0656e-82.5986e-82.9990e-68.6071e-73.6245e-86.8704e-944.6167
SAOF FRHHZ4.5734e-79.3326e-87.1349e-82.9432e-81.7822e-81.1827e-65.2495e-72.6096e-82.6970e-948.1150
SAOF FRHHN6.4074e-71.1282e-76.2660e-83.1626e-82.1958e-81.5243e-63.0090e-72.7720e-83.3508e-948.1150
SAOF FRHHE5.5867e-78.9903e-85.4545e-83.0306e-82.1154e-88.3921e-73.5588e-72.9045e-82.3781e-948.1150
GBOS GUHHZ6.4311e-61.0503e-64.0225e-79.5740e-85.7879e-81.7310e-51.5646e-68.9911e-82.1611e-849.6103
GBOS GUHHN3.8941e-68.5264e-74.6466e-71.4618e-79.9121e-81.5854e-51.8632e-61.5722e-73.2492e-849.6103
GBOS GUHHE4.3051e-68.0995e-74.1594e-71.0276e-75.5772e-81.6482e-51.5515e-69.0036e-81.8019e-849.6103
BHB GUHHZ7.8020e-78.8399e-84.8253e-82.8387e-82.1724e-81.4389e-61.6426e-74.4036e-82.8462e-958.2359
BHB GUHHN7.6255e-76.8525e-83.9891e-82.1119e-81.6488e-81.3501e-61.4322e-73.3014e-82.3005e-958.2359
BHB GUHHE8.9628e-71.0145e-75.9462e-83.2743e-82.0399e-81.0080e-62.1118e-74.2042e-82.6614e-958.2359
ESCA FRHHZ1.1908e-61.1641e-76.6411e-82.9812e-82.6142e-81.6007e-64.0212e-73.9312e-83.5827e-959.4172
ESCA FRHHN2.4514e-63.1610e-78.7778e-83.4117e-82.0743e-84.8368e-62.8157e-73.2425e-86.2119e-959.4172
ESCA FRHHE1.3313e-61.8429e-79.6873e-84.0171e-82.9795e-83.4023e-65.6367e-73.5831e-84.7568e-959.4172
IMI GUHHZ4.4736e-78.2218e-84.5080e-83.9119e-83.5536e-81.3790e-61.8564e-75.2540e-83.0505e-970.7134
IMI GUHHN1.2913e-61.8179e-71.0580e-76.8372e-85.3610e-82.5970e-64.9253e-77.2247e-84.6958e-970.7134
IMI GUHHE1.0740e-61.5430e-77.4978e-84.3934e-83.6733e-81.6196e-64.8437e-75.3307e-84.0048e-970.7134
*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)

rsni