MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.7
2026-05-04 02:32:05 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-05-04 07:59:52

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Earthquake info - Manual location
Event - ID :260504023138
Magnitude (ML) :0.7 +/- 0.2
Origin Time :2026-05-04 02:32:05.338 (UTC)
Location : Latitude: 44.313 N, Longitude: 7.321 E
Area :Alpi Marittime
Depth (km) :12.15
Distances (km) : 2.0 --- Demonte
5.1 --- Valloriate
5.5 --- Moiola
7.1 --- Valdieri
7.3 --- Gaiola
7.6 --- Rittana
8.1 --- Aisone
10.0 --- Entracque
10.0 --- Roccasparvera
10.8 --- Monterosso Grana
11.6 --- Roaschia
11.7 --- Vinadio
12.0 --- Valgrana
12.2 --- Bernezzo
12.4 --- Pradleves
12.7 --- Roccavione
13.0 --- Vignolo
13.4 --- Borgo San Dalmazzo
13.9 --- Castelmagno
14.1 --- Cervasca

Quality location estimate: Erh: 0.5 km, Erz: 0.5 km, Nf: 48, Gap: 65 °, Rms: 0.32


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.
STVGU2026-05-04 02:32:08.2000.0090-0.011.512026-05-04 02:32:09.5700.0451-0.610.8715.1
VINDIV2026-05-04 02:32:08.6330.02000.001.492026-05-04 02:32:10.4560.0400-0.421.1316.8
ENRGU2026-05-04 02:32:08.7200.01000.041.352026-05-04 02:32:10.5700.0541-0.421.1317.9
ISOFR2026-05-04 02:32:11.1700.01400.430.042026-05-04 02:32:14.1900.0852-0.201.1729.0
PZZGU2026-05-04 02:32:11.0900.0160-0.121.222026-05-04 02:32:14.7160.1715-0.650.7830.3
TURFFR2026-05-04 02:32:12.9560.02000.041.242026-05-04 02:32:17.6700.0400-0.640.8239.8
SAOFFR2026-05-04 02:32:13.3710.0200-0.001.382026-05-04 02:32:18.0410.1303-0.980.2842.6
GBOSGU2026-05-04 02:32:13.3000.02410.011.342026-05-04 02:32:18.4690.1344-0.221.1744.0
PONCIV2026-05-04 02:32:13.3180.0200-0.011.392026-05-04 02:32:18.7640.0400-0.241.1544.4
SURFFR2026-05-04 02:32:13.7090.0281-0.221.082026-05-04 02:32:19.6000.1384-0.461.0446.1
MLIGIV2026-05-04 02:32:13.8770.0200-0.481.112026-05-04 02:32:19.2240.0400-1.530.0247.8
MVIFFR2026-05-04 02:32:14.7210.02000.011.282026-05-04 02:32:20.6300.1494-0.870.4449.7
CMAGIV2026-05-04 02:32:14.5590.0200-0.570.992026-05-04 02:32:22.0700.04000.110.8352.3
ESCAFR2026-05-04 02:32:15.5220.02000.071.052026-05-04 02:32:21.9200.0400-0.640.8155.2
BRDIT2026-05-04 02:32:15.3350.1004-0.391.112026-05-04 02:32:22.4510.0400-0.520.9957.6
PVTIT2026-05-04 02:32:15.7070.02000.011.262026-05-04 02:32:22.7750.0400-0.281.1658.0
BHBGU2026-05-04 02:32:15.0560.0200-0.421.122026-05-04 02:32:21.7800.2577-0.760.6259.6
BIGNGU2026-05-04 02:32:16.1460.0200-0.101.292026-05-04 02:32:23.2500.1835-0.590.8560.8
BURYGU2026-05-04 02:32:16.3530.0200-0.501.082026-05-04 02:32:23.8100.2416-1.050.3163.0
ROROGU2026-05-04 02:32:16.7200.0341-0.051.292026-05-04 02:32:24.3400.1965-0.361.0664.6
IMIGU2026-05-04 02:32:16.6360.0200-0.181.192026-05-04 02:32:24.2700.1975-0.660.7565.2
RRLGU2026-05-04 02:32:19.1470.0200-0.431.102026-05-04 02:32:29.8040.16040.130.7280.9
FENEIV2026-05-04 02:32:19.5730.0200-0.211.182026-05-04 02:32:29.4330.0400-0.500.9783.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
STV GUHH1.002.98e-115.1177
ISO FRHH0.514.31e-229.0237
PZZ GUHH0.689.90e-230.3323
SAOF FRHH0.522.08e-242.6153
PONC IVHH0.391.44e-244.4326
ESCA FRHH0.419.67e-355.2175
BHB GUHH0.397.15e-359.6356
BIGN GUEH0.781.85e-260.8146
BURY GUHH0.902.24e-263.0162
RORO GUHH0.831.82e-264.6110
IMI GUHH0.953.13e-265.2134
RRL GUHH0.443.05e-380.9328


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 GUHHZ6.3412e-57.2543e-61.3020e-63.4114e-71.7673e-73.5281e-56.0139e-64.4040e-71.1507e-715.1177
STV GUHHN6.0045e-55.6573e-68.5903e-73.0607e-71.9279e-74.1864e-53.0440e-63.9151e-78.3401e-815.1177
STV GUHHE6.8364e-58.8433e-61.8216e-65.8960e-73.7256e-76.0117e-58.0554e-67.7791e-71.8296e-715.1177
ENR GUHHZ1.1260e-41.1139e-51.4816e-64.1894e-72.5372e-79.7178e-55.5963e-66.3930e-71.8746e-717.9140
ENR GUHHN3.2034e-42.3633e-53.2156e-69.8180e-75.3582e-71.4048e-41.2232e-51.4368e-64.1711e-717.9140
ENR GUHHE4.9835e-43.9254e-54.1297e-61.3143e-68.0748e-72.5388e-42.4243e-52.3256e-67.2719e-717.9140
ISO FRHHZ5.7407e-65.4277e-72.0664e-78.0572e-84.1001e-86.7047e-61.0562e-66.8537e-81.2750e-829.0237
ISO FRHHN9.5141e-61.1739e-62.4986e-79.3383e-85.4877e-88.5596e-61.2773e-69.7819e-81.9913e-829.0237
ISO FRHHE7.3638e-67.7479e-72.4538e-77.1448e-84.8626e-81.0077e-51.1180e-68.0650e-81.3937e-829.0237
PZZ GUHHZ9.3724e-61.2029e-67.0617e-71.6837e-78.9854e-81.9851e-52.7001e-61.5017e-72.8812e-830.3323
PZZ GUHHN1.0970e-51.6853e-67.9993e-72.2559e-71.3104e-73.9530e-53.3828e-62.0988e-73.4800e-830.3323
PZZ GUHHE7.8797e-61.2166e-66.7330e-71.5616e-77.5767e-81.2792e-53.9327e-61.1724e-72.6118e-830.3323
TURF FRHHZ1.0858e-61.0408e-75.2246e-82.7582e-83.3978e-81.7602e-62.9295e-75.8054e-86.7828e-939.8171
TURF FRHHN1.3284e-61.6055e-76.5004e-82.0637e-81.1272e-82.6908e-62.6756e-71.7657e-83.2789e-939.8171
TURF FRHHE7.3800e-71.3515e-75.6110e-81.9076e-81.1052e-81.8382e-63.1037e-71.6886e-82.6301e-939.8171
SAOF FRHHZ1.6450e-63.2201e-72.0284e-76.3739e-82.9200e-83.7885e-69.4973e-73.9443e-86.5908e-942.6153
SAOF FRHHN2.2370e-64.6727e-71.8576e-76.8107e-85.6312e-85.4428e-65.9275e-71.0547e-71.4804e-842.6153
SAOF FRHHE1.4809e-62.4102e-71.5266e-75.6847e-82.4921e-83.8823e-68.3436e-73.8166e-85.6259e-942.6153
GBOS GUHHZ8.4161e-61.5072e-67.0788e-71.5343e-79.6695e-82.9093e-52.5368e-61.7151e-73.4550e-844.0101
GBOS GUHHN8.9821e-61.4052e-66.0997e-71.9174e-79.0011e-81.8164e-51.9977e-61.3023e-72.6409e-844.0101
GBOS GUHHE8.5866e-61.5581e-66.7475e-71.6643e-79.4508e-82.5507e-52.4076e-61.7570e-73.5487e-844.0101
PONC IVHHZ4.9621e-64.6161e-71.3316e-75.1091e-82.1257e-86.3445e-66.7764e-73.8876e-88.2833e-944.4326
PONC IVHHN3.0282e-63.3865e-71.2370e-73.1792e-81.7230e-84.8629e-65.9882e-73.2175e-86.2153e-944.4326
PONC IVHHE2.0559e-61.6967e-71.0069e-73.4508e-81.6205e-83.6547e-65.0113e-72.4695e-83.8597e-944.4326
CMAG IVHHZ2.8673e-66.5132e-74.0259e-71.9277e-78.9004e-87.4842e-61.9968e-61.1589e-71.2956e-852.361
CMAG IVHHN3.6431e-68.4669e-76.3323e-71.8262e-79.6639e-81.4317e-54.1735e-61.2381e-71.9909e-852.361
CMAG IVHHE4.2760e-68.2496e-76.3721e-72.0838e-78.5662e-81.4932e-53.7354e-61.1446e-71.8205e-852.361
ESCA FRHHZ3.4262e-63.8211e-75.7115e-82.1090e-81.4657e-81.5164e-62.2933e-72.1436e-82.5690e-955.2175
ESCA FRHHN1.9796e-62.3907e-78.0872e-82.7898e-81.9912e-84.6494e-63.6331e-72.7513e-85.0916e-955.2175
ESCA FRHHE1.1799e-61.7148e-79.2358e-83.0214e-82.3498e-82.3980e-64.1103e-73.6949e-83.6232e-955.2175
BRD ITHNZ2.4074e-63.1031e-72.8106e-72.2541e-71.0150e-73.0497e-61.9049e-61.0948e-79.9332e-957.6145
BRD ITHNN2.3424e-65.4180e-74.3302e-73.0086e-71.6357e-76.5476e-62.9200e-62.2159e-71.8390e-857.6145
BRD ITHNE2.5776e-64.8733e-73.3065e-72.4445e-71.4290e-77.2396e-61.6087e-61.6183e-71.4845e-857.6145
PVT ITHNZ5.1205e-65.6260e-73.7864e-72.7932e-71.5546e-77.6145e-62.0752e-62.0315e-71.5961e-858.0122
PVT ITHNN7.6703e-68.3424e-74.0432e-72.9412e-71.6435e-71.2658e-51.7740e-61.9582e-72.1748e-858.0122
PVT ITHNE9.5528e-61.0606e-63.6068e-73.0667e-71.8707e-71.0158e-51.6671e-62.4087e-72.3299e-858.0122
BHB GUHHZ1.7495e-61.9376e-75.2349e-81.5669e-88.5141e-92.9588e-61.8029e-71.4880e-83.4208e-959.6356
BHB GUHHN1.3932e-61.7501e-76.4024e-81.8462e-81.0881e-82.8056e-62.6779e-71.7157e-83.0898e-959.6356
BHB GUHHE1.6586e-61.6607e-75.6536e-81.7787e-89.9414e-92.6227e-62.4281e-71.7577e-83.2539e-959.6356
BIGN GUEHZ1.2889e-61.2667e-76.9795e-82.9778e-82.5146e-82.9785e-62.6839e-73.6727e-83.5946e-960.8146
BIGN GUEHN3.6530e-64.7256e-71.6631e-75.3883e-83.0450e-86.4433e-64.7615e-73.9967e-81.0150e-860.8146
BIGN GUEHE4.4593e-64.4330e-71.1482e-73.7521e-82.6503e-86.5622e-64.7479e-74.8830e-81.0160e-860.8146
BURY GUHHZ1.6705e-61.8823e-78.0958e-85.3378e-84.0179e-83.5126e-63.0429e-75.5805e-84.5177e-963.0162
BURY GUHHN3.7931e-63.5939e-71.0472e-75.7065e-83.6305e-84.8812e-64.5554e-73.4588e-87.1388e-963.0162
BURY GUHHE6.4621e-67.1138e-71.3366e-76.0686e-83.9229e-83.8409e-65.8897e-75.2305e-81.2593e-863.0162
RORO GUHHZ1.9389e-62.2082e-79.7765e-82.7547e-81.3787e-83.5536e-64.9511e-72.1322e-85.1486e-964.6110
RORO GUHHN2.6858e-63.0169e-71.7783e-74.1821e-82.7179e-85.3970e-67.9759e-74.5554e-87.6133e-964.6110
RORO GUHHE2.5925e-62.8907e-71.1371e-73.0500e-81.5750e-84.0091e-64.5282e-72.6214e-85.5112e-964.6110
IMI GUHHZ2.5265e-64.0100e-71.7481e-74.7673e-82.8890e-86.2029e-65.3251e-74.4424e-89.2701e-965.2134
IMI GUHHN6.2221e-67.9426e-72.8337e-77.8878e-84.5427e-81.4270e-51.1451e-66.6174e-81.6023e-865.2134
IMI GUHHE3.8935e-65.5668e-72.3744e-76.1038e-83.2566e-88.4374e-68.7199e-74.9530e-81.1665e-865.2134
RRL GUHHZ2.3067e-72.8989e-81.6132e-89.5018e-95.2931e-94.7896e-78.6038e-88.4064e-98.7208e-1080.9328
RRL GUHHN2.1647e-73.7605e-82.5189e-81.2452e-87.3099e-96.2051e-79.5879e-81.2590e-89.8415e-1080.9328
RRL GUHHE2.4641e-74.8939e-82.5454e-81.2233e-87.2969e-98.4900e-71.1367e-71.0243e-81.1434e-980.9328
FENE IVHHZ5.2508e-76.0404e-82.6138e-88.8688e-94.3537e-91.2857e-68.5945e-86.5739e-91.2661e-983.4346
FENE IVHHN6.6752e-79.2034e-82.8653e-89.1156e-95.2486e-91.2144e-61.2458e-79.8598e-92.0278e-983.4346
FENE IVHHE4.8901e-75.3636e-82.7104e-87.9495e-94.8374e-91.1152e-69.7122e-88.9784e-91.3824e-983.4346
*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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