MANUAL Location - Area: Francia , magnitude (ML): 2.9
2025-07-31 02:31:00 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-31 07:50:31

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Earthquake info - Manual location
Event - ID :250731022926
Magnitude (ML) :2.9 +/- 0.2
Origin Time :2025-07-31 02:31:00.975 (UTC)
Location : Latitude: 44.240 N, Longitude: 6.703 E
Area :Francia
Depth (km) :6.52
Distances (km) : 25.6 --- Argentera
28.7 --- Pietraporzio
31.6 --- Sambuco
34.8 --- Acceglio
38.3 --- Vinadio
38.7 --- Canosio
39.0 --- Prazzo
39.5 --- Marmora
41.9 --- Aisone
44.7 --- Castelmagno
44.9 --- Stroppo
45.4 --- Elva
45.5 --- Bellino
46.6 --- Celle di Macra
47.7 --- Macra
48.0 --- Demonte
48.7 --- Casteldelfino
49.8 --- Pontechianale
50.1 --- Pradleves
52.0 --- San Damiano Macra

Quality location estimate: Erh: 0.7 km, Erz: 1.3 km, Nf: 78, Gap: 99 °, Rms: 0.28


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.
SURFFR2025-07-31 02:31:06.8800.0200-0.001.532025-07-31 02:31:11.5640.04000.440.6728.9
ISOFR2025-07-31 02:31:07.1500.01500.071.442025-07-31 02:31:11.2400.0902-0.031.4729.3
VINDIV2025-07-31 02:31:08.7340.0200-0.031.532025-07-31 02:31:13.7550.0400-0.241.2738.9
OGDIFR2025-07-31 02:31:08.5900.0200-0.500.782025-07-31 02:31:15.2200.12930.071.3241.3
PZZGU2025-07-31 02:31:09.6200.0231-0.161.402025-07-31 02:31:15.8150.1404-0.181.3145.0
STVGU2025-07-31 02:31:10.4400.04520.221.102025-07-31 02:31:16.8000.15240.410.7950.2
MVIFFR2025-07-31 02:31:11.1500.02710.041.472025-07-31 02:31:18.4800.1604-0.261.1952.8
ENRGU2025-07-31 02:31:11.7400.03010.171.212025-07-31 02:31:18.7500.17450.041.2857.5
TURFFR2025-07-31 02:31:12.8300.03210.061.422025-07-31 02:31:21.2100.1905-0.151.2362.7
OGAGFR2025-07-31 02:31:12.4600.0311-0.191.362025-07-31 02:31:20.5280.0400-0.271.2162.8
ESCAFR2025-07-31 02:31:14.2500.03610.191.182025-07-31 02:31:23.3750.2186-0.141.1970.7
SAOFFR2025-07-31 02:31:14.7700.0381-0.121.432025-07-31 02:31:23.9540.1002-0.760.4673.9
RRLGU2025-07-31 02:31:14.9300.0381-0.131.412025-07-31 02:31:25.0300.23060.071.1576.5
BHBGU2025-07-31 02:31:15.4600.04120.111.312025-07-31 02:31:25.0500.3407-0.310.9880.0
MLIGIV2025-07-31 02:31:15.7120.0200-0.900.252025-07-31 02:31:26.6110.0400-0.950.2783.4
EILFFR2025-07-31 02:31:16.4700.04220.690.402025-07-31 02:31:26.5910.04000.490.6984.4
BURYGU2025-07-31 02:31:16.1700.0432-0.520.772025-07-31 02:31:26.7050.4219-1.160.2585.3
BRDIT2025-07-31 02:31:17.0460.0200-0.381.032025-07-31 02:31:28.4420.0400-0.510.8190.3
GBOSGU2025-07-31 02:31:17.2200.04620.141.262025-07-31 02:31:28.0800.27470.171.0390.8
MGROGU2025-07-31 02:31:17.2200.0462-0.590.652025-07-31 02:31:29.2200.3007-0.300.9991.2
BIGNGU2025-07-31 02:31:17.4500.0522-0.341.112025-07-31 02:31:29.3400.2797-0.261.0392.6
SNRMIT2025-07-31 02:31:18.3290.0200-0.241.262025-07-31 02:31:30.6950.0400-0.251.1498.4
PVTIT2025-07-31 02:31:18.5750.0200-0.301.172025-07-31 02:31:31.0060.0400-0.331.05100.0
IMIGU2025-07-31 02:31:18.8800.0522-0.331.122025-07-31 02:31:32.3700.04000.420.80102.1
GARSIT2025-07-31 02:31:19.6920.02000.450.712025-07-31 02:31:32.2320.04000.720.43104.9
OGMOFR2025-07-31 02:31:20.1300.0542-0.151.342025-07-31 02:31:33.1800.0400-0.700.58107.8
ROROGU2025-07-31 02:31:20.1600.0562-0.201.292025-07-31 02:31:33.9290.04000.270.98109.8
RSPGU2025-07-31 02:31:20.5900.05620.021.352025-07-31 02:31:33.9500.3377-0.330.92110.6
DNSPIT2025-07-31 02:31:21.0020.0200-0.061.372025-07-31 02:31:35.5570.04000.500.70114.7
ALBCIT2025-07-31 02:31:21.9220.02000.730.372025-07-31 02:31:36.4230.04001.000.22114.9
QLNOIV2025-07-31 02:31:23.9800.06730.211.112025-07-31 02:31:39.1980.0400-0.630.67131.3
LATOIV2025-07-31 02:31:23.4020.0200-0.261.202025-07-31 02:31:39.6130.04000.031.10132.4
MONCIV2025-07-31 02:31:24.5300.1838-0.181.19--:---.-----.---.-- 134.2
LSDGU2025-07-31 02:31:25.2700.0703-0.241.192025-07-31 02:31:43.9670.04001.410.08140.1
SVAIT2025-07-31 02:31:25.3480.02000.241.062025-07-31 02:31:41.7990.0400-0.440.87140.2
ROTMGU2025-07-31 02:31:27.1400.07530.510.672025-07-31 02:31:45.6990.04000.530.68147.3
ACQIT2025-07-31 02:31:26.6910.02000.390.832025-07-31 02:31:44.3580.0400-0.161.03148.2
PCPGU2025-07-31 02:31:26.7300.07630.340.912025-07-31 02:31:44.5410.04000.001.04150.3
RSLFR2025-07-31 02:31:29.5600.08140.560.612025-07-31 02:31:51.5940.04003.030.00161.3


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
PZZ GUHH2.553.38e+045.048
STV GUHH2.741.68e+050.289
ENR GUHH2.903.75e+057.591
OGAG FRHH2.417.34e-162.8348
ESCA FRHH2.731.18e+070.7130
RRL GUHH2.544.32e-176.55
BHB GUHH2.514.96e-180.034
EILF FRHH3.222.44e+084.4156
BURY GUHH2.809.04e-185.3126
BRD ITHN2.981.21e+090.3114
GBOS GUHH3.128.46e-190.889
MGRO GUHH2.615.06e-191.2104
BIGN GUEH3.151.69e+092.6116
PVT ITHN2.674.67e-1100.0102
IMI GUHH3.051.42e+0102.1111
GARS ITHN3.091.10e+0104.992
RORO GUHH3.151.12e+0109.897
RSP GUHH2.552.95e-1110.624
DNSP ITHN2.926.00e-1114.7107
QLNO IVHH3.076.02e-1131.385
LSD GUHH2.853.05e-1140.114
ROTM GUHH2.991.38e+0147.362
PCP GUHH2.923.22e-1150.376


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.
(°)
ISO FRHHZ1.9468e-42.9223e-51.4233e-55.6504e-63.2258e-64.3162e-45.2884e-55.0755e-67.9719e-729.3102
ISO FRHHN2.6189e-44.3759e-51.4079e-54.4462e-62.3721e-67.3952e-45.0805e-53.8763e-68.4911e-729.3102
ISO FRHHE1.2242e-41.9533e-51.0106e-54.5693e-62.2705e-63.2164e-45.5311e-53.3837e-64.7043e-729.3102
PZZ GUHHZ1.0034e-42.9758e-52.2403e-57.5010e-64.3905e-62.7896e-41.0139e-45.7271e-67.5017e-745.048
PZZ GUHHN1.0746e-43.1823e-52.0082e-51.2588e-56.2091e-63.3099e-41.2060e-47.5676e-69.0044e-745.048
PZZ GUHHE1.5031e-43.8110e-52.7155e-51.6319e-58.1562e-64.4348e-41.2462e-41.1093e-58.2796e-745.048
STV GUHHZ8.3582e-51.2961e-51.0804e-54.7777e-63.5503e-61.2823e-46.6546e-55.1134e-63.9807e-750.289
STV GUHHN8.6135e-51.6886e-51.2783e-55.9399e-63.5754e-61.8987e-47.6662e-55.2599e-65.4585e-750.289
STV GUHHE6.6857e-51.4667e-59.9524e-64.6435e-61.8997e-61.7014e-45.2137e-52.4707e-63.7946e-750.289
ENR GUHHZ1.7106e-43.0457e-51.7158e-51.0480e-53.5425e-63.7639e-46.8614e-54.6271e-67.4797e-757.591
ENR GUHHN3.8143e-44.3850e-53.0009e-51.5603e-58.5397e-67.2873e-41.7689e-41.2256e-51.2129e-657.591
ENR GUHHE2.9158e-43.7311e-52.3787e-58.0815e-63.8543e-66.6076e-41.2997e-45.3429e-68.4887e-757.591
TURF FRHHZ3.7959e-58.7532e-68.5606e-63.3612e-61.6044e-61.1382e-43.8233e-52.2043e-62.6143e-762.7118
TURF FRHHN5.6197e-51.1245e-57.7980e-63.0407e-61.7942e-61.9953e-43.7300e-52.2257e-62.8266e-762.7118
TURF FRHHE4.2784e-51.0919e-57.3983e-63.3509e-61.7618e-61.5392e-43.7454e-52.5836e-62.9446e-762.7118
OGAG FRHHZ1.3866e-54.5674e-63.1184e-62.8863e-61.7542e-62.4844e-51.6365e-52.3848e-61.1162e-762.8348
OGAG FRHHN9.3740e-62.2235e-62.2120e-61.9361e-61.5206e-61.7794e-51.5606e-51.8181e-69.1931e-862.8348
OGAG FRHHE8.5281e-64.2950e-63.4739e-64.9521e-63.6599e-61.7941e-51.9444e-54.1745e-62.3311e-762.8348
ESCA FRHHZ4.2371e-59.4444e-68.2042e-64.2586e-61.9051e-61.2566e-44.1561e-52.2886e-62.4646e-770.7130
ESCA FRHHN5.1207e-51.4203e-58.7575e-65.2769e-62.4955e-61.8089e-43.1479e-53.4731e-63.3394e-770.7130
ESCA FRHHE7.4287e-51.8812e-59.7128e-63.8344e-62.4157e-62.0151e-43.3240e-53.3269e-64.5603e-770.7130
SAOF FRHHZ1.5014e-54.9414e-63.6174e-62.3343e-61.0301e-64.2655e-52.3461e-51.1820e-61.5510e-773.9112
SAOF FRHHN1.5936e-53.6744e-63.5845e-62.4890e-61.2502e-65.3048e-51.8364e-51.4698e-61.2196e-773.9112
SAOF FRHHE1.3632e-53.6714e-63.6625e-61.8508e-68.6857e-74.3740e-52.3954e-59.9651e-71.1636e-773.9112
RRL GUHHZ8.6421e-62.1398e-61.6290e-61.5947e-61.0659e-62.6658e-51.0406e-52.0236e-68.3152e-876.55
RRL GUHHN1.0787e-53.0314e-63.2233e-62.0728e-61.0736e-62.3542e-51.5295e-51.4154e-69.8968e-876.55
RRL GUHHE8.1753e-62.6008e-62.4626e-62.5074e-61.4764e-62.5070e-51.1874e-51.7302e-69.7892e-876.55
BHB GUHHZ2.6804e-54.7484e-63.6450e-62.2805e-69.7429e-79.3707e-51.9263e-51.2749e-61.2498e-780.034
BHB GUHHN1.6150e-54.1458e-63.5569e-62.5863e-61.4833e-66.5223e-51.9456e-51.3691e-61.5685e-780.034
BHB GUHHE1.6947e-53.5482e-64.0629e-62.7582e-69.8336e-74.4828e-51.9331e-51.2136e-61.5659e-780.034
EILF FRHHZ2.7946e-43.9460e-51.3410e-53.8805e-61.8964e-64.3977e-44.8943e-53.3020e-67.6366e-784.4156
EILF FRHHN2.5994e-43.9659e-52.5535e-56.8513e-63.2114e-65.6932e-41.0934e-45.4834e-69.3904e-784.4156
EILF FRHHE2.4160e-43.1366e-51.7614e-56.7735e-63.4738e-64.4557e-49.3287e-54.2195e-67.1617e-784.4156
BURY GUHHZ2.6890e-54.4562e-63.9981e-61.8573e-68.3538e-79.0002e-52.5958e-51.0246e-61.3527e-785.3126
BURY GUHHN6.8408e-51.1688e-58.8253e-62.4600e-61.6272e-62.9585e-45.5846e-52.9518e-63.1120e-785.3126
BURY GUHHE5.6760e-59.2462e-65.3329e-61.9892e-61.0138e-61.5687e-41.6632e-51.3742e-61.9784e-785.3126
BRD ITHNZ4.3026e-58.6190e-67.0290e-62.1101e-61.0370e-61.2426e-43.3225e-51.5537e-62.2482e-790.3114
BRD ITHNN4.8451e-51.0329e-59.0865e-64.0791e-61.4855e-61.3653e-45.0006e-51.8681e-62.3825e-790.3114
BRD ITHNE4.8709e-51.4702e-51.1379e-55.1209e-62.3155e-62.3263e-46.3161e-52.7917e-63.8720e-790.3114
GBOS GUHHZ3.7689e-51.0334e-57.4556e-62.9359e-61.3509e-61.0300e-44.0423e-51.7333e-62.5663e-790.889
GBOS GUHHN2.5284e-57.5906e-67.0093e-62.9172e-61.1197e-66.8273e-54.8434e-51.5662e-62.3841e-790.889
GBOS GUHHE4.3455e-51.0864e-57.9543e-63.8701e-61.7627e-61.0950e-43.3878e-52.1969e-62.7370e-790.889
MGRO GUHHZ1.1234e-52.8307e-62.5171e-61.8018e-69.1394e-73.5365e-51.5148e-51.0748e-68.5128e-891.2104
MGRO GUHHN1.9311e-54.6156e-64.2323e-62.1161e-68.5712e-74.9524e-52.8321e-51.0934e-61.4801e-791.2104
MGRO GUHHE1.6719e-54.0427e-63.2777e-61.6195e-67.8464e-75.5021e-51.4013e-59.2480e-71.0075e-791.2104
BIGN GUEHZ7.2790e-51.1394e-58.1586e-62.4438e-61.1878e-61.4368e-44.1135e-51.5780e-62.6627e-792.6116
BIGN GUEHN9.2222e-51.6670e-51.0721e-54.2699e-61.8855e-63.4983e-45.4984e-52.8031e-64.4995e-792.6116
BIGN GUEHE1.5781e-42.4524e-51.6481e-53.8333e-61.9241e-66.2659e-49.2957e-53.0908e-66.0762e-792.6116
SNRM ITHNZ9.4709e-52.0991e-51.1979e-54.0261e-62.1496e-62.7249e-46.2277e-52.9166e-64.8696e-798.4118
SNRM ITHNN1.8446e-43.4441e-52.7546e-51.1826e-55.8497e-65.1381e-41.6857e-48.4921e-61.2232e-698.4118
SNRM ITHNE1.1911e-42.9205e-52.0886e-59.4411e-64.0987e-63.4907e-41.5486e-45.9199e-69.3411e-798.4118
PVT ITHNZ3.8808e-56.5052e-63.4211e-61.2718e-67.2054e-77.1938e-52.2350e-59.2018e-71.3407e-7100.0102
PVT ITHNN4.1183e-55.7591e-64.5491e-61.6125e-65.8188e-71.0183e-42.5130e-57.8389e-71.2928e-7100.0102
PVT ITHNE5.5496e-56.8471e-64.1365e-61.3020e-66.4761e-71.2981e-42.6001e-59.4689e-71.6278e-7100.0102
IMI GUHHZ4.4291e-58.4032e-65.7180e-62.4065e-61.0352e-61.1217e-42.8205e-51.4081e-61.5245e-7102.1111
IMI GUHHN1.0171e-41.8973e-51.0746e-55.8234e-62.9299e-61.7149e-47.2545e-53.7319e-65.4446e-7102.1111
IMI GUHHE7.0883e-51.4735e-59.3530e-64.9080e-62.0573e-62.0611e-45.0597e-52.9920e-63.4989e-7102.1111
GARS ITHNZ2.0895e-54.8703e-63.5580e-61.8131e-67.6482e-74.4446e-52.0485e-51.0078e-61.2532e-7104.992
GARS ITHNN4.9251e-51.3309e-51.1131e-53.7746e-61.5241e-61.3709e-46.2395e-52.1974e-63.1694e-7104.992
GARS ITHNE3.6664e-58.0141e-66.9374e-62.6144e-61.3768e-68.8365e-54.4794e-51.8370e-61.9859e-7104.992
RORO GUHHZ2.5550e-54.4755e-63.9515e-61.3545e-66.0061e-76.4402e-52.1481e-57.8502e-71.0819e-7109.897
RORO GUHHN2.8395e-55.8310e-64.8531e-61.3028e-66.5824e-71.0113e-41.9561e-59.9598e-71.6813e-7109.897
RORO GUHHE2.1300e-55.4160e-64.1954e-61.3394e-67.5300e-77.7039e-52.4148e-51.1160e-61.4415e-7109.897
RSP GUHHZ8.8683e-62.0977e-61.8248e-61.4293e-66.8664e-72.4034e-59.8808e-61.0408e-67.9692e-8110.624
RSP GUHHN9.3199e-63.1181e-62.4266e-61.5091e-67.3032e-72.9224e-51.1862e-51.0518e-69.7693e-8110.624
RSP GUHHE9.2844e-62.4813e-62.7070e-61.5227e-65.9198e-73.3467e-51.6675e-56.6623e-78.4434e-8110.624
DNSP ITHNZ2.4849e-53.8191e-63.2074e-61.1138e-66.3353e-77.9213e-51.8594e-59.2151e-71.2812e-7114.7107
DNSP ITHNN3.2641e-56.1800e-63.6107e-61.5039e-67.1915e-78.2541e-51.4502e-51.0784e-61.6235e-7114.7107
DNSP ITHNE3.4129e-56.9173e-64.3121e-61.8475e-68.7433e-71.2068e-41.9908e-51.2550e-61.8543e-7114.7107
ALBC ITHNZ2.8767e-57.5846e-65.6912e-62.9887e-61.2100e-61.0578e-43.4396e-51.4375e-61.8065e-7114.964
ALBC ITHNN5.4504e-51.5500e-51.5408e-56.8656e-62.9239e-61.2912e-48.8373e-53.9994e-65.1640e-7114.964
ALBC ITHNE5.8262e-51.6947e-51.7152e-57.0865e-62.8688e-61.3797e-41.2565e-43.9354e-64.6428e-7114.964
QLNO IVHHZ1.3728e-55.3300e-63.6570e-62.0385e-61.2254e-63.1386e-52.1351e-52.1046e-61.4271e-7131.385
QLNO IVHHN1.5735e-54.4796e-63.5239e-61.8167e-66.4561e-74.6656e-51.5803e-58.8561e-79.7969e-8131.385
QLNO IVHHE1.6848e-54.7390e-65.3917e-62.4575e-61.0042e-63.0473e-52.9502e-51.5278e-61.6460e-7131.385
LSD GUHHZ4.5469e-69.8594e-71.0934e-64.7863e-71.7804e-78.0856e-66.5386e-62.3241e-72.7909e-8140.114
LSD GUHHN3.9732e-61.4631e-61.2771e-66.6012e-73.0565e-78.4729e-68.6394e-63.4163e-73.9709e-8140.114
LSD GUHHE4.6109e-61.2614e-61.3457e-67.4277e-73.1775e-79.4528e-61.0018e-53.9825e-73.5670e-8140.114
SVA ITHGZ9.6635e-65.4396e-64.0289e-63.2098e-61.3408e-61.5811e-52.5087e-51.6249e-61.8112e-7140.286
SVA ITHGN1.6360e-53.2188e-62.8261e-61.4518e-66.5906e-72.2420e-51.5521e-58.6016e-77.0911e-8140.286
SVA ITHGE2.0936e-56.8956e-65.4948e-63.1040e-61.0714e-62.9546e-52.6303e-51.4021e-61.9779e-7140.286
ROTM GUHHZ1.1878e-52.4310e-62.1304e-68.9428e-73.6071e-72.4290e-51.1952e-54.7723e-75.8320e-8147.362
ROTM GUHHN1.6372e-56.0220e-63.1606e-61.8650e-61.2384e-62.1880e-52.1969e-51.5719e-61.6102e-7147.362
ROTM GUHHE2.3855e-57.3357e-62.7230e-61.5610e-61.3247e-62.0102e-51.9868e-51.9594e-61.7846e-7147.362
ACQ ITHNZ1.2404e-53.2674e-62.5291e-68.5590e-73.5174e-73.6983e-51.2996e-55.1549e-78.3942e-8148.270
ACQ ITHNN3.3933e-57.9655e-66.7428e-62.2848e-61.0286e-68.9408e-53.2724e-51.1682e-62.0751e-7148.270
ACQ ITHNE4.3360e-51.2320e-59.2231e-63.3404e-61.4451e-61.0745e-43.8918e-52.2724e-63.3267e-7148.270
PCP GUHHZ6.8313e-62.4518e-61.6983e-69.4853e-74.8729e-72.1666e-51.4690e-56.9360e-77.2750e-8150.376
PCP GUHHN9.5246e-63.2496e-61.6374e-69.5896e-73.5919e-71.0405e-51.3174e-54.8466e-74.4167e-8150.376
PCP GUHHE7.3984e-61.9855e-61.6975e-66.0539e-72.8847e-71.3153e-51.7785e-54.0058e-76.0075e-8150.376
*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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