MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.4
2026-09-28 15:11:58 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-29 07:58:53

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Earthquake info - Manual location
Event - ID :260928151054
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2026-09-28 15:11:58.103 (UTC)
Location : Latitude: 44.611 N, Longitude: 7.223 E
Area :Alpi Cozie
Depth (km) :6.01
Distances (km) : 4.4 --- Sampeyre
5.8 --- Frassino
7.9 --- Oncino
8.5 --- Sanfront
9.2 --- Melle
9.3 --- Paesana
9.7 --- Ostana
10.0 --- Gambasca
10.9 --- Rifreddo
11.3 --- Crissolo
11.3 --- Martiniana Po
11.7 --- Brossasco
12.1 --- Valmala
12.4 --- Casteldelfino
12.7 --- Macra
12.7 --- Isasca
13.1 --- Elva
13.7 --- San Damiano Macra
13.8 --- Stroppo
14.1 --- Revello

Quality location estimate: Erh: 0.8 km, Erz: 1.8 km, Nf: 24, Gap: 122 °, Rms: 0.17


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.
PZZGU2026-09-28 15:12:01.8500.00800.430.222026-09-28 15:12:03.7600.0471-0.011.7616.1
PONCIV2026-09-28 15:12:01.8220.02000.180.782026-09-28 15:12:04.1360.0400-0.021.7617.6
BHBGU2026-09-28 15:12:03.0400.01200.001.852026-09-28 15:12:05.9100.0752-0.470.3526.0
VINDIV2026-09-28 15:12:04.4370.02000.001.802026-09-28 15:12:08.6250.0400-0.260.8634.2
STVGU2026-09-28 15:12:05.6790.02000.081.512026-09-28 15:12:10.6980.2126-0.111.1442.0
ENRGU2026-09-28 15:12:06.1300.1165-0.061.442026-09-28 15:12:11.8270.48190.010.7745.7
RRLGU2026-09-28 15:12:06.7800.0231-0.290.742026-09-28 15:12:12.3900.1464-0.980.1449.3
ISOFR2026-09-28 15:12:07.7100.04020.600.122026-09-28 15:12:13.4800.15140.181.0149.8
OGAGFR2026-09-28 15:12:08.3700.0200-0.300.742026-09-28 15:12:15.1780.0400-1.060.1258.0
RSPGU2026-09-28 15:12:08.6900.02000.011.612026-09-28 15:12:15.9700.0400-0.061.3360.3
GBOSGU2026-09-28 15:12:09.1150.0200-0.051.542026-09-28 15:12:16.6840.1965-0.041.1264.2
LSDGU2026-09-28 15:12:14.4870.02000.181.032026-09-28 15:12:24.6300.3918-0.970.2695.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.149.21e-216.1216
PONC IVHH0.802.12e-117.6277
BHB GUHH0.162.15e-226.07
STV GUHH0.369.99e-342.0169
ENR GUHH0.693.75e-245.7160
RRL GUHH0.601.27e-249.3315
ISO FRHH0.075.35e-349.8196
OGAG FRHH0.428.93e-358.0290
RSP GUHH0.306.58e-360.33
LSD GUHH0.604.46e-395.0356


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 GUHHZ1.2841e-51.2135e-66.7659e-71.9120e-71.0666e-71.1073e-54.0551e-61.6774e-72.6304e-816.1216
PZZ GUHHN1.1826e-51.6369e-66.3796e-71.4626e-78.2552e-83.1092e-52.1903e-61.5886e-73.4101e-816.1216
PZZ GUHHE1.2481e-51.4189e-68.4709e-71.9535e-79.9141e-82.5136e-54.3355e-61.6810e-73.3147e-816.1216
PONC IVHHZ6.0685e-53.9748e-64.7980e-71.9860e-71.0780e-71.7412e-52.3201e-62.7862e-77.1074e-817.6277
PONC IVHHN5.0591e-56.1608e-61.2785e-64.5482e-72.7805e-77.1373e-55.2481e-65.6135e-71.3054e-717.6277
PONC IVHHE3.3103e-53.0486e-64.9734e-72.0805e-71.1918e-71.7624e-52.9923e-62.4774e-76.4496e-817.6277
BHB GUHHZ4.1181e-64.3041e-72.0556e-76.4877e-84.9129e-81.0310e-51.0154e-61.0371e-79.3804e-926.07
BHB GUHHN3.0386e-63.6534e-71.8668e-74.0717e-82.8559e-89.0488e-67.0338e-76.2129e-88.7338e-926.07
BHB GUHHE3.9155e-64.4844e-71.5060e-74.9160e-82.7638e-88.1331e-66.9576e-75.3962e-88.3998e-926.07
STV GUHHZ1.1848e-61.2852e-77.1807e-81.8923e-81.0652e-82.2190e-63.6094e-71.8567e-82.2599e-942.0169
STV GUHHN1.3977e-61.6675e-76.2589e-81.8862e-81.0758e-82.4088e-62.9676e-71.8447e-83.4283e-942.0169
STV GUHHE1.7173e-62.3811e-77.8476e-82.7663e-81.3085e-84.5500e-63.0056e-71.9732e-85.0835e-942.0169
ENR GUHHZ4.2268e-64.4068e-71.4179e-74.2286e-82.0469e-86.6976e-65.6585e-73.6565e-89.5627e-945.7160
ENR GUHHN8.0976e-66.3391e-72.4247e-76.7788e-83.5912e-81.2409e-58.8956e-77.2632e-81.4004e-845.7160
ENR GUHHE9.9675e-67.8000e-73.4164e-77.9549e-84.8206e-81.1373e-51.5861e-68.0013e-81.8785e-845.7160
RRL GUHHZ9.8683e-71.2334e-75.5737e-82.5094e-81.0584e-81.7044e-62.7679e-71.4286e-82.6661e-949.3315
RRL GUHHN1.4026e-62.2417e-71.0279e-72.3148e-81.4794e-86.1139e-62.9981e-72.4861e-84.9785e-949.3315
RRL GUHHE1.4621e-62.3969e-71.0047e-73.2090e-81.7831e-86.3562e-63.7530e-72.9137e-85.8515e-949.3315
ISO FRHHZ6.4002e-79.5508e-84.7685e-81.8107e-87.7134e-92.0073e-62.2698e-71.1775e-82.2870e-949.8196
ISO FRHHN7.7691e-78.0503e-82.8317e-88.8664e-95.0684e-91.3803e-61.2386e-78.3031e-91.8035e-949.8196
ISO FRHHE8.7778e-71.2450e-74.5311e-81.6781e-86.8219e-92.3456e-61.3667e-71.0272e-82.4316e-949.8196
OGAG FRHHZ2.7540e-75.6223e-83.9980e-82.2308e-81.0768e-81.0701e-62.3758e-71.1155e-81.4912e-958.0290
OGAG FRHHN2.7121e-75.6592e-84.4668e-82.3005e-81.2436e-87.8945e-72.0205e-71.7542e-81.5777e-958.0290
OGAG FRHHE3.1154e-78.1760e-85.8134e-84.3136e-82.2102e-85.5348e-72.7591e-72.9672e-82.8476e-958.0290
RSP GUHHZ7.5823e-78.7579e-84.5193e-82.0024e-89.8828e-91.7391e-62.3098e-71.5251e-82.2231e-960.33
RSP GUHHN1.2075e-61.4323e-76.4250e-82.1870e-81.0883e-82.6462e-62.5774e-71.9743e-83.1799e-960.33
RSP GUHHE1.0941e-61.3657e-76.3340e-82.7238e-81.2723e-83.6824e-62.7646e-71.9683e-82.8928e-960.33
GBOS GUHHZ2.3221e-64.1360e-72.8917e-78.5525e-83.9212e-89.1801e-61.3717e-66.5214e-89.4411e-964.2130
GBOS GUHHN1.5845e-63.3062e-72.2182e-75.0681e-83.0724e-83.9676e-61.1852e-65.1995e-88.8190e-964.2130
GBOS GUHHE1.4958e-62.7768e-71.6596e-76.9508e-82.5190e-83.9751e-67.5505e-73.6358e-85.8202e-964.2130
LSD GUHHZ4.6253e-75.2858e-83.3201e-81.1520e-85.8270e-97.0061e-71.5225e-79.0487e-91.3658e-995.0356
LSD GUHHN5.7051e-76.0674e-83.3332e-81.1464e-86.5277e-91.2709e-62.5073e-79.7769e-91.4744e-995.0356
LSD GUHHE8.1793e-77.5730e-83.9239e-81.2314e-87.1829e-91.3242e-62.1491e-71.1989e-81.9978e-995.0356
*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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