MANUAL Location - Area: Alpi Marittime , magnitude (ML): 2.1
2025-08-26 21:27:46 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-27 09:00:46

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Earthquake info - Manual location
Event - ID :250826212625
Magnitude (ML) :2.1 +/- 0.2
Origin Time :2025-08-26 21:27:46.399 (UTC)
Location : Latitude: 44.328 N, Longitude: 7.160 E
Area :Alpi Marittime
Depth (km) :6.15
Distances (km) : 2.3 --- Vinadio
4.9 --- Aisone
6.9 --- Sambuco
10.0 --- Castelmagno
10.3 --- Pietraporzio
10.9 --- Demonte
14.0 --- Pradleves
15.6 --- Marmora
15.7 --- Canosio
15.8 --- Monterosso Grana
17.0 --- Valloriate
17.4 --- Celle di Macra
18.2 --- Moiola
19.2 --- Rittana
19.3 --- Argentera
19.3 --- Prazzo
19.3 --- Macra
19.5 --- San Damiano Macra
19.5 --- Cartignano
19.6 --- Valdieri

Quality location estimate: Erh: 0.5 km, Erz: 0.5 km, Nf: 70, Gap: 50 °, Rms: 0.24


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.
STVGU2025-08-26 21:27:50.0400.01400.161.162025-08-26 21:27:52.2700.05210.051.6117.5
ISOFR2025-08-26 21:27:50.7100.01000.440.392025-08-26 21:27:52.8200.0581-0.021.6319.5
PZZGU2025-08-26 21:27:51.0100.0110-0.041.672025-08-26 21:27:53.9400.1243-0.420.8021.6
ENRGU2025-08-26 21:27:51.1600.01300.031.712025-08-26 21:27:54.2640.0772-0.081.4624.4
SURFFR2025-08-26 21:27:52.8200.0160-0.031.672025-08-26 21:27:57.5800.09920.131.2833.0
TURFFR2025-08-26 21:27:54.9100.02210.121.382025-08-26 21:28:00.1800.1324-0.560.6843.8
MVIFFR2025-08-26 21:27:55.5800.0241-0.011.612025-08-26 21:28:01.5890.1454-0.650.5848.3
SAOFFR2025-08-26 21:27:55.9000.02510.121.382025-08-26 21:28:01.7530.3177-0.560.7049.6
GBOSGU2025-08-26 21:27:56.4100.02810.021.582025-08-26 21:28:03.4900.16650.360.7355.4
MLIGIV2025-08-26 21:27:56.4960.0200-0.590.642025-08-26 21:28:03.6410.0400-0.890.3356.6
BHBGU2025-08-26 21:27:56.5700.02910.051.542025-08-26 21:28:03.4600.1725-0.031.2357.4
ESCAFR2025-08-26 21:27:57.2300.0341-0.041.532025-08-26 21:28:04.3690.2997-0.530.7458.2
MGROGU2025-08-26 21:27:57.2500.0311-0.550.672025-08-26 21:28:04.7800.1835-0.960.3061.1
BURYGU2025-08-26 21:27:58.5600.0351-0.500.722025-08-26 21:28:06.9800.2066-0.880.3868.6
PVTIT2025-08-26 21:27:58.6160.0200-0.171.222025-08-26 21:28:07.4630.04000.031.2768.9
BIGNGU2025-08-26 21:27:58.7100.0351-0.111.352025-08-26 21:28:06.6900.2076-0.690.5669.0
OGAGFR2025-08-26 21:27:59.0100.0351-0.231.072025-08-26 21:28:08.6570.25770.330.7671.3
RRLGU2025-08-26 21:27:59.1000.0361-0.490.732025-08-26 21:28:08.5020.3908-0.430.8072.6
IMIGU2025-08-26 21:27:59.5300.0381-0.201.162025-08-26 21:28:08.6300.3287-0.360.8874.9
SNRMIT2025-08-26 21:27:59.7690.02000.061.452025-08-26 21:28:08.8590.0400-0.021.2675.4
ROROGU2025-08-26 21:27:59.9000.0432-0.071.412025-08-26 21:28:09.1310.2727-0.141.0476.3
OGDIFR2025-08-26 21:28:01.3700.03910.340.702025-08-26 21:28:11.0100.4178-0.510.7378.6
DNSPIT2025-08-26 21:28:01.3640.02000.091.362025-08-26 21:28:12.0080.04000.370.7185.3
EILFFR2025-08-26 21:28:01.8600.02000.260.902025-08-26 21:28:12.2600.26170.170.9386.9
RSPGU2025-08-26 21:28:01.4100.0462-0.720.502025-08-26 21:28:12.0740.3928-1.060.3191.9
QLNOIV2025-08-26 21:28:02.7330.0200-0.310.952025-08-26 21:28:14.0000.5299-0.660.5994.5
MONCIV2025-08-26 21:28:04.7600.0562-0.061.322025-08-26 21:28:19.0270.04000.450.60102.9
SVAIT2025-08-26 21:28:04.4990.0200-0.031.352025-08-26 21:28:17.1070.0400-0.161.08103.6
OGMOFR2025-08-26 21:28:04.5900.0914-0.430.822025-08-26 21:28:18.1400.3157-0.030.93105.0
ROTMGU2025-08-26 21:28:06.4500.05620.250.942025-08-26 21:28:20.6500.33370.020.88110.9
PCPGU2025-08-26 21:28:05.6600.0572-0.061.302025-08-26 21:28:19.8410.04000.470.57112.7
LSDGU2025-08-26 21:28:07.6900.0633-0.011.272025-08-26 21:28:22.9450.04000.310.77126.1
RNCAGU2025-08-26 21:28:10.0200.07230.031.212025-08-26 21:28:27.7990.04000.420.64143.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
STV GUHH2.072.70e+017.5125
ISO FRHH2.063.18e+019.5209
PZZ GUHH1.701.94e+021.6350
ENR GUHH2.416.56e+024.4118
TURF FRHH1.894.61e-143.8155
SAOF FRHH1.833.11e-149.6140
GBOS GUHH2.323.99e-155.4100
BHB GUHH1.842.19e-157.48
ESCA FRHH1.852.37e-158.2163
MGRO GUHH2.063.43e-161.1121
BURY GUHH1.871.73e-168.6152
PVT ITHN2.233.99e-168.9117
BIGN GUEH2.032.47e-169.0138
OGAG FRHH2.012.19e-171.3316
RRL GUHH2.021.47e-172.6336
IMI GUHH2.518.46e-174.9128
SNRM ITHN2.394.68e-175.4138
RORO GUHH2.162.69e-176.3108
DNSP ITHN2.323.00e-185.3121
EILF FRHH2.565.09e-186.9182
RSP GUHH1.818.37e-291.95
QLNO IVHH1.909.06e-294.590
MONC IVHH2.031.48e-1102.936
SVA ITHG2.039.74e-2103.691
ROTM GUHH2.083.55e-1110.958
PCP GUHH1.774.86e-2112.777
LSD GUHH2.208.91e-2126.1359
RNCA GUHH1.812.60e-2143.283


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 GUHHZ5.3081e-44.9527e-51.5447e-54.7669e-63.4495e-66.7100e-47.0483e-56.2153e-61.1388e-617.5125
STV GUHHN5.8126e-46.3537e-51.9013e-55.4430e-63.1496e-67.0294e-47.4946e-56.1926e-61.2826e-617.5125
STV GUHHE6.8762e-46.5426e-51.5995e-56.4365e-64.1279e-67.2202e-46.7887e-57.7235e-61.5667e-617.5125
ISO FRHHZ4.3696e-45.7201e-51.7308e-54.2484e-62.4321e-65.9739e-45.8233e-54.3571e-61.0040e-619.5209
ISO FRHHN6.8604e-46.7174e-51.8621e-56.4793e-64.3622e-67.1831e-46.9920e-58.2215e-61.6381e-619.5209
ISO FRHHE4.1141e-46.1990e-52.1579e-57.0792e-64.7556e-67.2112e-49.1520e-58.5064e-61.5525e-619.5209
PZZ GUHHZ2.3841e-43.3445e-51.5675e-53.6664e-61.8804e-65.0929e-47.3810e-53.0386e-66.6789e-721.6350
PZZ GUHHN2.8020e-43.1534e-51.4462e-54.8826e-62.2766e-64.2702e-44.5578e-53.8113e-67.6403e-721.6350
PZZ GUHHE2.3667e-42.5669e-51.3926e-53.6617e-62.1422e-63.4028e-47.5253e-53.7671e-66.9483e-721.6350
ENR GUHHZ1.2716e-31.3443e-42.4412e-56.8549e-64.6871e-61.8763e-39.9671e-59.3012e-62.5526e-624.4118
ENR GUHHN1.9848e-31.9020e-43.9064e-51.2596e-56.5305e-62.5523e-31.7737e-41.1240e-53.0424e-624.4118
ENR GUHHE3.0295e-32.1490e-43.3829e-51.0798e-55.4206e-62.3421e-31.3810e-41.3035e-54.0543e-624.4118
TURF FRHHZ3.3279e-53.8977e-61.9817e-65.2606e-72.8783e-76.6887e-57.1919e-64.7138e-79.3265e-843.8155
TURF FRHHN2.9959e-54.6980e-62.8744e-68.8557e-73.6900e-71.2898e-49.9695e-65.7224e-71.1681e-743.8155
TURF FRHHE2.7732e-56.5876e-63.7605e-61.4875e-65.7418e-79.2673e-51.8193e-58.3826e-71.5762e-743.8155
SAOF FRHHZ1.2326e-53.1121e-62.5707e-61.1378e-64.4156e-73.9506e-51.7683e-56.0286e-77.8591e-849.6140
SAOF FRHHN3.0324e-54.5438e-62.2547e-69.5350e-74.5656e-75.8069e-51.3446e-56.8900e-71.1868e-749.6140
SAOF FRHHE1.6036e-53.4803e-62.5379e-61.0762e-64.1732e-74.6578e-51.7911e-56.0106e-79.6287e-849.6140
GBOS GUHHZ3.6036e-56.4145e-63.3014e-69.1594e-74.3031e-77.9875e-51.3989e-57.6838e-71.6599e-755.4100
GBOS GUHHN3.0450e-55.4182e-63.7453e-61.2920e-65.9514e-77.4505e-51.1129e-57.9361e-71.3821e-755.4100
GBOS GUHHE2.9036e-54.7757e-62.8953e-61.0276e-63.9979e-77.5429e-51.0752e-55.6666e-71.2046e-755.4100
BHB GUHHZ5.0267e-56.0599e-62.3351e-67.3353e-73.3239e-71.0228e-47.2369e-65.2921e-71.1357e-757.48
BHB GUHHN3.9858e-55.1888e-61.9947e-65.5041e-72.7879e-78.3997e-58.4924e-64.3493e-79.3135e-857.48
BHB GUHHE4.6232e-55.2054e-61.8028e-66.7358e-73.4244e-78.8374e-57.1993e-65.4147e-71.1060e-757.48
ESCA FRHHZ1.8943e-52.6944e-61.4901e-64.2261e-72.1339e-72.9628e-57.1725e-63.6641e-77.7980e-858.2163
ESCA FRHHN3.0461e-53.1575e-61.5419e-64.7072e-71.9666e-76.4460e-56.7566e-63.1738e-76.9513e-858.2163
ESCA FRHHE2.8786e-53.9416e-62.0969e-65.6953e-72.7181e-77.8421e-51.2768e-53.9694e-77.9910e-858.2163
MGRO GUHHZ1.4541e-53.0701e-62.5394e-62.0870e-67.9744e-73.3699e-51.4658e-59.6823e-71.0596e-761.1121
MGRO GUHHN2.9302e-54.4849e-63.0866e-61.2999e-64.9631e-76.2839e-51.6252e-57.1319e-71.2073e-761.1121
MGRO GUHHE2.3436e-54.6119e-62.5120e-61.4562e-65.2570e-76.0975e-51.0188e-56.3733e-77.7357e-861.1121
BURY GUHHZ1.3663e-51.6828e-69.0078e-72.7724e-71.4443e-73.1518e-55.4088e-62.1563e-74.0232e-868.6152
BURY GUHHN2.2839e-52.9445e-61.4389e-65.9759e-72.3428e-75.8129e-55.6945e-63.3575e-76.8446e-868.6152
BURY GUHHE2.6428e-53.1441e-61.3128e-65.1711e-72.2734e-75.9145e-55.4798e-63.3524e-76.9955e-868.6152
PVT ITHNZ4.9193e-54.9167e-61.9916e-65.8723e-73.5245e-77.6460e-59.5269e-65.9956e-71.1844e-768.9117
PVT ITHNN6.7103e-56.9634e-63.6615e-61.2578e-65.4860e-71.7505e-41.3517e-58.8871e-71.8642e-768.9117
PVT ITHNE1.0565e-49.9170e-62.4493e-66.9451e-74.1186e-71.4621e-46.1935e-68.5971e-72.0431e-768.9117
BIGN GUEHZ1.9035e-52.0966e-69.7890e-73.1635e-71.5959e-74.1544e-53.1487e-62.6217e-74.3201e-869.0138
BIGN GUEHN5.7796e-55.8728e-62.0648e-66.4801e-72.9079e-78.3936e-56.3725e-65.4691e-71.1891e-769.0138
BIGN GUEHE5.5612e-57.0553e-61.8760e-64.6236e-72.5757e-79.6701e-56.2734e-65.0076e-71.3494e-769.0138
OGAG FRHHZ1.1365e-52.4996e-61.7702e-68.0444e-73.4666e-73.4293e-51.0788e-54.9131e-76.8273e-871.3316
OGAG FRHHN8.3038e-61.4404e-61.1733e-64.5710e-71.7962e-72.7264e-55.2481e-62.4712e-73.8267e-871.3316
OGAG FRHHE8.2238e-62.1967e-62.2457e-61.0827e-64.4561e-71.8120e-51.1530e-56.1729e-77.2268e-871.3316
RRL GUHHZ1.3448e-52.0465e-69.3981e-73.1331e-71.4536e-73.5746e-53.9858e-62.4764e-74.9551e-872.6336
RRL GUHHN1.3679e-52.2864e-61.7403e-66.1262e-72.9022e-75.1582e-59.6700e-63.9915e-76.4121e-872.6336
RRL GUHHE1.5296e-52.4832e-61.5082e-66.2219e-72.8810e-73.8023e-57.3096e-63.4035e-75.0946e-872.6336
IMI GUHHZ3.0530e-54.6072e-62.2024e-66.3380e-73.1003e-75.2648e-51.1614e-55.1849e-71.1270e-774.9128
IMI GUHHN1.1915e-41.4407e-56.2308e-62.0466e-61.1866e-61.7868e-41.9957e-51.8744e-63.2749e-774.9128
IMI GUHHE4.6770e-55.4918e-63.4062e-69.1527e-74.8484e-78.2834e-51.3640e-57.8446e-71.3865e-774.9128
SNRM ITHNZ2.6924e-53.8042e-62.5987e-61.0310e-63.6564e-76.5524e-58.9523e-65.2519e-71.0155e-775.4138
SNRM ITHNN3.3259e-54.5816e-63.7186e-61.4632e-66.0645e-71.0799e-41.8705e-58.0909e-71.1993e-775.4138
SNRM ITHNE4.0779e-55.8516e-64.2503e-61.6966e-67.5144e-71.6339e-42.0638e-51.0945e-61.5383e-775.4138
RORO GUHHZ2.6380e-54.4105e-62.4656e-66.6457e-73.6046e-77.5851e-51.2247e-55.9744e-71.1214e-776.3108
RORO GUHHN2.8518e-54.1240e-62.6573e-65.7647e-73.1063e-74.9921e-51.3358e-54.8505e-78.7003e-876.3108
RORO GUHHE2.1002e-52.6849e-61.5373e-64.0656e-71.7530e-75.1494e-57.1308e-63.1072e-76.3747e-876.3108
DNSP ITHNZ2.8083e-53.5056e-61.7586e-66.1423e-73.0822e-76.3455e-59.9635e-64.7455e-77.4550e-885.3121
DNSP ITHNN3.9023e-55.3417e-62.4906e-67.6677e-73.6111e-76.2210e-51.4052e-56.0546e-71.3068e-785.3121
DNSP ITHNE3.8051e-54.1640e-62.5738e-61.0361e-64.1211e-71.0759e-48.5269e-65.7979e-71.1239e-785.3121
EILF FRHHZ4.1507e-54.4147e-61.9239e-65.5061e-72.8723e-76.0354e-55.8533e-64.5184e-79.3142e-886.9182
EILF FRHHN4.5902e-56.0277e-64.6758e-61.8342e-68.8860e-79.5335e-52.2883e-51.2130e-61.6029e-786.9182
EILF FRHHE4.1262e-54.7976e-63.0579e-61.3925e-65.3129e-78.1096e-51.4143e-57.2810e-71.1646e-786.9182
RSP GUHHZ1.1897e-51.2712e-65.3579e-71.8326e-78.2941e-81.8249e-53.3277e-61.2336e-72.8859e-891.95
RSP GUHHN9.3403e-61.4578e-67.8238e-72.0893e-79.4116e-82.3221e-53.6339e-61.4566e-73.0029e-891.95
RSP GUHHE8.9093e-61.2690e-67.2158e-72.0861e-79.7194e-83.1032e-53.6151e-61.5575e-73.3296e-891.95
QLNO IVHHZ8.2292e-69.9692e-75.3671e-71.7637e-78.7179e-81.1778e-52.5882e-61.2168e-72.1290e-894.590
QLNO IVHHN1.4660e-51.7371e-68.7012e-72.2843e-71.0316e-73.0734e-54.9990e-61.5922e-73.6395e-894.590
QLNO IVHHE1.5380e-51.7178e-67.7482e-72.3936e-71.1978e-72.8179e-53.4630e-62.1104e-73.5287e-894.590
MONC IVHHZ5.2038e-69.3453e-78.1746e-72.4484e-71.2738e-71.5815e-54.0691e-61.6818e-72.5534e-8102.936
MONC IVHHN4.3854e-61.0519e-69.6913e-74.7396e-71.6353e-71.6641e-54.8803e-62.1704e-73.2163e-8102.936
MONC IVHHE9.9520e-61.5110e-61.3974e-67.1179e-72.9659e-72.0793e-58.6367e-63.5204e-75.5732e-8102.936
SVA ITHGZ8.6969e-69.3923e-76.3860e-73.9749e-72.0294e-71.0418e-53.3122e-62.5716e-72.2945e-8103.691
SVA ITHGN8.4939e-61.1489e-67.8704e-73.3948e-71.8379e-72.3968e-53.5560e-62.7395e-73.3056e-8103.691
SVA ITHGE6.3551e-61.2923e-69.4683e-73.9369e-71.6854e-72.0734e-54.0027e-62.4035e-73.2415e-8103.691
ROTM GUHHZ1.5694e-52.2941e-61.3277e-64.1655e-71.6704e-73.7604e-57.4512e-62.4901e-74.3440e-8110.958
ROTM GUHHN1.5159e-53.3699e-63.1644e-61.3170e-64.8057e-74.2662e-51.9482e-56.8904e-79.7719e-8110.958
ROTM GUHHE1.2705e-52.7139e-62.5465e-69.6676e-73.8108e-74.7732e-51.8828e-54.6582e-76.6430e-8110.958
PCP GUHHZ6.1984e-67.4600e-74.4364e-71.9033e-76.9795e-81.4160e-52.2304e-68.8772e-81.5059e-8112.777
PCP GUHHN5.0424e-66.9214e-73.9226e-71.3536e-75.5067e-81.3394e-51.8671e-68.2753e-81.5824e-8112.777
PCP GUHHE5.1764e-67.5458e-74.6073e-71.3847e-76.4993e-81.1950e-52.3689e-69.6916e-81.8229e-8112.777
LSD GUHHZ3.7826e-65.8638e-74.2612e-71.5121e-78.0150e-88.7659e-62.2101e-61.0863e-71.3966e-8126.1359
LSD GUHHN5.2675e-67.7560e-75.0945e-71.8169e-77.9021e-81.1866e-53.1046e-61.1596e-71.6278e-8126.1359
LSD GUHHE5.9024e-61.1555e-67.0422e-72.3341e-71.0210e-71.1095e-53.9219e-61.3676e-72.4556e-8126.1359
RNCA GUHHZ1.7216e-62.3291e-71.5943e-75.0294e-82.4779e-84.9898e-67.5742e-74.2809e-88.1227e-9143.283
RNCA GUHHN6.1590e-71.0071e-78.9285e-84.5707e-81.8629e-81.4257e-64.3965e-72.5278e-82.8827e-9143.283
RNCA GUHHE1.9278e-61.8851e-71.0614e-73.7485e-81.8515e-84.3495e-65.4678e-72.8397e-83.8770e-9143.283
*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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