MANUAL Location - Area: Valle del Trebbia , magnitude (ML): 2.4
2025-08-27 10:23:56 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-27 10:38:49

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Earthquake info - Manual location
Event - ID :250827102319
Magnitude (ML) :2.4 +/- 0.2
Origin Time :2025-08-27 10:23:56.985 (UTC)
Location : Latitude: 44.793 N, Longitude: 9.601 E
Area :Valle del Trebbia
Depth (km) :5.21
Distances (km) : 1.7 --- Bettola
8.9 --- Travo
9.0 --- Farini
9.4 --- Ponte dell Olio
11.2 --- Morfasso
11.2 --- Gropparello
12.9 --- Rivergaro
14.6 --- Vigolzone
15.6 --- Coli
17.0 --- Piozzano
17.1 --- Bobbio
17.2 --- Bore
18.2 --- Vernasca
18.2 --- Ferriere
18.3 --- Lugagnano Val d Arda
18.3 --- Agazzano
19.1 --- Gazzola
19.2 --- Corte Brugnatella
19.4 --- Pecorara
19.6 --- Podenzano

Quality location estimate: Erh: 0.7 km, Erz: 1.2 km, Nf: 66, Gap: 82 °, 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.
BVTIT2025-08-27 10:24:03.2730.0200-0.091.592025-08-27 10:24:08.3350.04000.071.6731.8
GORRGU2025-08-27 10:24:03.6600.01600.121.622025-08-27 10:24:08.8300.09720.021.6032.4
VRLIT2025-08-27 10:24:05.2360.02000.001.762025-08-27 10:24:11.7350.04000.121.5344.8
TGLIT2025-08-27 10:24:05.6490.0200-0.091.582025-08-27 10:24:12.0300.0400-0.590.4245.3
GRAMGU2025-08-27 10:24:06.4000.02510.141.562025-08-27 10:24:14.1310.04000.920.2150.1
MSSAIV2025-08-27 10:24:06.7300.0271-0.041.682025-08-27 10:24:14.2940.1655-0.161.2153.7
SARZIV2025-08-27 10:24:08.9280.02001.150.142025-08-27 10:24:18.2860.04001.960.0255.1
RNSIT2025-08-27 10:24:07.8350.02000.041.712025-08-27 10:24:16.1180.0400-0.251.0557.2
CARIT2025-08-27 10:24:07.7800.0200-0.021.682025-08-27 10:24:16.1710.04000.031.4960.9
NEVIIV2025-08-27 10:24:09.6970.12050.540.572025-08-27 10:24:18.8740.36070.310.9461.4
RNCAGU2025-08-27 10:24:08.4800.03110.011.692025-08-27 10:24:16.8900.3698-0.380.8262.8
GNVIT2025-08-27 10:24:09.2490.02000.191.382025-08-27 10:24:18.5990.04000.380.9266.7
AULIT2025-08-27 10:24:09.6000.0200-0.001.662025-08-27 10:24:18.8930.0400-0.071.3771.5
EQUIGU2025-08-27 10:24:11.3800.0462-0.241.072025-08-27 10:24:22.3640.30470.081.0982.5
PLMAIV2025-08-27 10:24:11.8240.0200-0.111.432025-08-27 10:24:22.6230.0400-0.740.3585.1
PCPGU2025-08-27 10:24:12.5700.0442-0.111.412025-08-27 10:24:24.1290.0400-0.520.6188.2
GSCLGU2025-08-27 10:24:14.0600.0462-0.370.772025-08-27 10:24:28.1600.04000.350.9692.5
SARMGU2025-08-27 10:24:13.4100.0512-0.031.522025-08-27 10:24:26.2600.28370.620.6393.0
VLCMN2025-08-27 10:24:13.6000.04720.181.372025-08-27 10:24:26.9500.04001.440.1094.2
CMEIT2025-08-27 10:24:15.5840.0200-0.470.602025-08-27 10:24:28.8530.0400-1.550.07108.7
MDIIV2025-08-27 10:24:17.6600.05520.051.442025-08-27 10:24:32.1900.6349-1.370.22109.1
CARDGU2025-08-27 10:24:16.4800.06020.420.832025-08-27 10:24:31.4720.04001.190.18110.4
QLNOIV2025-08-27 10:24:16.8700.08540.061.432025-08-27 10:24:30.5250.0400-1.090.19112.3
POPMGU2025-08-27 10:24:18.7800.06230.151.342025-08-27 10:24:35.8520.04001.030.27124.0
MUGIOCH2025-08-27 10:24:19.5550.0673-1.890.002025-08-27 10:24:36.9870.0400-3.150.00133.0
BAG8IV2025-08-27 10:24:20.9370.0200-0.261.042025-08-27 10:24:37.5680.0400-2.610.00133.1
VAREIV2025-08-27 10:24:22.4800.06830.620.542025-08-27 10:24:40.2630.0400-0.940.32136.1
PIIIV2025-08-27 10:24:20.7500.0703-0.530.582025-08-27 10:24:38.1120.0400-1.290.15140.0
ROROGU2025-08-27 10:24:21.2000.07230.221.212025-08-27 10:24:38.2930.0400-0.290.90143.4
GBOSGU2025-08-27 10:24:22.7500.07630.151.272025-08-27 10:24:42.3500.04001.030.00152.5
OROIV2025-08-27 10:24:23.9100.02000.141.282025-08-27 10:24:44.5020.0400-0.290.86157.2
MGROGU2025-08-27 10:24:24.1000.0824-0.251.032025-08-27 10:24:44.7550.04000.110.98165.1
IMIGU2025-08-27 10:24:24.1500.08440.091.282025-08-27 10:24:44.2100.04000.040.99167.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
BVT ITHN2.241.95e+031.8159
GORR GUHH2.231.83e+032.4230
TGL ITHN2.107.07e-145.3230
GRAM GUHH2.633.52e+050.1132
MSSA IVHH2.236.69e-153.7187
SARZ IVHH2.389.10e-155.1279
RNS ITHN2.114.50e-157.2248
CAR ITHN2.427.93e-160.9179
NEVI IVHN2.184.55e-161.4112
RNCA GUHH2.103.59e-162.8235
EQUI GUHH2.192.44e-182.5148
PLMA IVHH2.464.06e-185.1166
GSCL GUHH2.282.28e-192.5122
SARM GUEH2.443.89e-193.0137
VLC MNHH2.131.09e-194.2138
CME ITHN2.987.75e-1108.7149
MDI IVHH2.643.50e-1109.15
CARD GUHH2.714.07e-1110.4140
POPM GUHH2.453.39e-1124.0132
MUGIOCHHH2.841.57e-1133.0341
VARE IVHH2.441.28e-1136.1332
PII IVHH2.511.37e-1140.0148
RORO GUHH2.175.97e-2143.4239
GBOS GUHH2.718.98e-2152.5247
ORO IVEH2.842.17e-1157.2307
MGRO GUHH2.437.35e-2165.1240
IMI GUHH2.459.89e-2167.5235


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.
(°)
BVT ITHNZ3.6301e-59.7820e-69.1583e-67.7234e-63.3240e-68.1847e-53.9990e-54.4732e-63.0353e-731.8159
BVT ITHNN6.1797e-51.6756e-51.6799e-58.7024e-63.8810e-62.1657e-41.0834e-44.1435e-64.5405e-731.8159
BVT ITHNE7.7960e-52.0086e-51.7327e-58.3992e-63.6924e-62.5515e-41.0517e-44.6265e-66.3747e-731.8159
GORR GUHHZ1.2632e-42.3217e-51.1316e-56.2332e-62.7849e-62.2076e-46.0156e-54.2172e-64.9322e-732.4230
GORR GUHHN7.1868e-51.7308e-51.4775e-57.6772e-64.4887e-63.0687e-48.4320e-56.2533e-64.4634e-732.4230
GORR GUHHE1.0939e-42.4764e-51.7160e-58.6157e-63.8382e-63.3026e-46.2323e-54.8075e-66.5775e-732.4230
TGL ITHNZ3.4494e-54.8611e-63.4863e-61.5164e-68.0690e-74.7011e-52.1950e-59.2263e-71.0543e-745.3230
TGL ITHNN2.4997e-56.2591e-65.4477e-62.4454e-61.4262e-66.5336e-54.2473e-52.1421e-61.9266e-745.3230
TGL ITHNE2.9238e-57.6247e-65.7884e-62.9720e-62.6191e-69.2333e-53.0343e-54.8048e-62.7948e-745.3230
GRAM GUHHZ1.0125e-41.2130e-51.0357e-53.9766e-62.5666e-61.2654e-46.6430e-55.1530e-63.4953e-750.1132
GRAM GUHHN8.9986e-52.0741e-51.8955e-55.9862e-62.5329e-61.8721e-41.4267e-43.2714e-64.8487e-750.1132
GRAM GUHHE1.4315e-44.6821e-53.0110e-59.5879e-65.6700e-62.8759e-41.8175e-47.6451e-61.1937e-650.1132
MSSA IVHHZ2.0691e-55.1932e-64.0925e-61.9240e-69.0962e-75.5505e-51.6854e-51.2267e-61.4236e-753.7187
MSSA IVHHN2.1709e-55.1947e-64.0547e-61.6363e-69.1336e-79.4724e-52.0265e-51.2027e-61.3603e-753.7187
MSSA IVHHE2.4218e-57.0813e-64.6588e-62.8592e-61.1364e-66.1768e-51.7787e-51.4657e-61.6604e-753.7187
SARZ IVHHZ1.9104e-53.7470e-64.2176e-63.3785e-61.1602e-66.7527e-52.4397e-51.4122e-61.2937e-755.1279
SARZ IVHHN2.5572e-57.1421e-67.5488e-64.9176e-62.1749e-61.1112e-45.8124e-52.5396e-62.2458e-755.1279
SARZ IVHHE1.3633e-56.0603e-66.6069e-64.3079e-61.5173e-63.7576e-54.8382e-51.7214e-61.9985e-755.1279
RNS ITHNZ1.2633e-53.4155e-63.1724e-61.2747e-65.7911e-72.3750e-52.1045e-57.9158e-71.0167e-757.2248
RNS ITHNN1.3605e-54.8684e-64.0455e-61.8080e-68.1003e-72.9864e-52.5286e-51.0306e-61.4742e-757.2248
RNS ITHNE1.2358e-54.3338e-64.1024e-61.7374e-66.6199e-72.6433e-52.7890e-58.2831e-71.1532e-757.2248
CAR ITHNZ2.5151e-56.2615e-64.4479e-61.3405e-67.3548e-79.3326e-52.3819e-59.8066e-71.5062e-760.9179
CAR ITHNN3.8429e-57.6146e-66.1161e-62.1035e-61.0033e-61.3297e-43.6308e-51.5547e-62.0333e-760.9179
CAR ITHNE3.3350e-57.8229e-67.5703e-63.4686e-62.1895e-61.0511e-43.7843e-52.5980e-62.1890e-760.9179
NEVI IVHNZ1.3439e-53.2378e-62.1151e-61.5435e-61.4787e-63.9151e-51.2489e-52.5261e-61.3151e-761.4112
NEVI IVHNN8.9559e-63.1424e-62.8981e-61.4995e-67.5872e-72.4329e-51.5610e-51.0103e-69.5610e-861.4112
NEVI IVHNE1.5594e-54.0690e-64.0979e-62.2996e-61.3476e-64.7770e-52.1513e-51.9140e-61.3539e-761.4112
RNCA GUHHZ1.0964e-52.4984e-61.4872e-66.1753e-73.0364e-73.7840e-56.7518e-64.5056e-76.3590e-862.8235
RNCA GUHHN9.2997e-62.1399e-61.8646e-68.1670e-74.0293e-72.2700e-51.1453e-54.9063e-75.3154e-862.8235
RNCA GUHHE1.7931e-54.8601e-63.4778e-61.1197e-64.8010e-76.8451e-51.5223e-56.3652e-71.0823e-762.8235
GNV ITHGZ8.6806e-61.8480e-61.7749e-69.6824e-74.6074e-72.4858e-51.2656e-56.2506e-75.9018e-866.7233
GNV ITHGN8.5930e-62.0063e-62.2924e-61.1078e-64.2583e-72.7913e-51.6343e-55.7543e-76.0614e-866.7233
GNV ITHGE1.3242e-53.3677e-63.0029e-61.5320e-66.6125e-75.2525e-51.9624e-56.8729e-71.0284e-766.7233
EQUI GUHHZ5.8751e-61.4310e-61.4124e-66.3124e-73.0366e-71.1173e-58.8685e-63.3857e-73.9555e-882.5148
EQUI GUHHN7.7279e-62.0106e-61.9217e-61.0283e-65.0442e-72.1619e-51.3657e-56.4721e-77.1618e-882.5148
EQUI GUHHE8.3951e-61.6722e-61.7775e-67.8785e-73.4023e-72.1160e-51.2390e-53.8787e-74.5647e-882.5148
PLMA IVHHZ9.3726e-62.0455e-62.0806e-67.9236e-73.4323e-73.0305e-51.5984e-54.1119e-75.7348e-885.1166
PLMA IVHHN1.8714e-53.9559e-64.0020e-61.4479e-66.0345e-77.1695e-51.9932e-58.1207e-71.0594e-785.1166
PLMA IVHHE1.3159e-53.5737e-63.6345e-61.4887e-67.3014e-76.1383e-51.6444e-51.0612e-61.2382e-785.1166
PCP GUHHZ3.4039e-66.7483e-77.1567e-75.0424e-71.8759e-71.5722e-52.8818e-62.1765e-72.1118e-888.2252
PCP GUHHN2.3355e-67.2940e-77.3275e-74.3482e-71.6017e-78.3937e-63.8352e-62.0655e-72.1737e-888.2252
PCP GUHHE3.1981e-69.8048e-78.2271e-74.0572e-71.7353e-71.7382e-54.6427e-61.9896e-72.3036e-888.2252
GSCL GUHHZ2.8470e-68.0842e-78.6083e-75.1379e-72.7428e-77.9802e-65.8819e-64.6143e-73.1919e-892.5122
GSCL GUHHN3.5752e-61.8779e-61.5050e-68.9125e-74.1998e-78.5978e-61.1379e-55.7321e-76.3099e-892.5122
GSCL GUHHE3.7134e-61.4856e-61.3223e-68.7656e-73.8717e-77.2674e-61.0543e-54.5128e-74.3551e-892.5122
SARM GUEHZ3.1224e-69.6882e-71.1844e-67.5373e-72.4626e-78.1015e-67.2163e-62.6908e-73.5773e-893.0137
SARM GUEHN9.7906e-63.6100e-63.0048e-61.8674e-67.5180e-71.7167e-51.2802e-59.6755e-71.1154e-793.0137
SARM GUEHE3.3839e-61.1882e-61.3333e-67.7409e-72.6357e-79.4603e-69.3686e-63.3878e-73.4673e-893.0137
VLC MNHHZ3.3171e-65.8856e-75.5373e-74.0266e-72.0968e-79.5510e-61.9190e-62.3314e-72.1305e-894.2138
VLC MNHHN2.7523e-68.2191e-78.5559e-76.0560e-73.6348e-78.9919e-65.0868e-64.2466e-73.2268e-894.2138
VLC MNHHE4.3452e-69.8231e-77.4465e-75.3850e-72.3466e-78.9031e-64.2332e-63.0327e-72.6294e-894.2138
CME ITHNZ1.0672e-52.8042e-62.7509e-61.2688e-65.0891e-72.8838e-51.5920e-56.2176e-77.7064e-8108.7149
CME ITHNN2.0199e-56.5360e-66.6537e-63.5127e-61.5309e-65.0235e-53.9869e-51.7694e-62.1893e-7108.7149
CME ITHNE2.4966e-58.4747e-66.9640e-62.5366e-61.0751e-66.4683e-54.3949e-51.6438e-62.3666e-7108.7149
MDI IVHHZ4.6156e-61.2448e-61.4666e-66.6747e-72.5699e-71.1174e-56.9479e-63.3353e-74.2290e-8109.15
MDI IVHHN8.4893e-62.7574e-62.1922e-68.3067e-73.3357e-72.3437e-51.2895e-54.3367e-76.5881e-8109.15
MDI IVHHE1.1275e-53.3267e-63.2755e-61.4752e-65.2713e-73.0228e-51.8914e-57.4872e-79.3916e-8109.15
CARD GUHHZ8.3291e-62.2078e-61.6623e-61.0208e-64.0626e-72.7663e-57.7726e-64.8182e-75.5574e-8110.4140
CARD GUHHN1.2813e-53.2680e-63.1691e-61.3792e-65.4229e-74.5453e-51.3576e-57.8031e-79.0220e-8110.4140
CARD GUHHE1.9522e-54.8953e-63.8206e-61.4668e-65.8242e-75.9378e-51.6764e-58.3723e-71.3309e-7110.4140
QLNO IVHHZ2.8633e-65.7757e-76.0419e-73.3628e-71.6365e-71.0353e-53.5776e-61.9315e-71.9054e-8112.3243
QLNO IVHHN3.3391e-67.2902e-76.5161e-73.0349e-71.5069e-78.3784e-63.8761e-61.5427e-71.7321e-8112.3243
QLNO IVHHE3.2889e-67.3734e-76.4754e-72.4889e-71.3201e-76.7297e-63.4452e-61.7758e-71.8027e-8112.3243
POPM GUHHZ6.8551e-61.1686e-68.9903e-72.9332e-71.0881e-73.4784e-54.7478e-61.5721e-72.8727e-8124.0132
POPM GUHHN5.9282e-62.1198e-61.1420e-64.8888e-72.1671e-72.4234e-55.0313e-62.8733e-73.3395e-8124.0132
POPM GUHHE4.3676e-61.7284e-61.2127e-66.4963e-73.5385e-71.0282e-57.6043e-64.4684e-73.9693e-8124.0132
MUGIOCHHHZ2.6199e-69.3765e-75.0873e-72.8276e-71.1172e-76.1714e-62.3829e-61.4539e-71.8870e-8133.0341
MUGIOCHHHN3.0049e-61.1360e-66.1970e-73.9940e-72.3778e-75.4888e-63.4543e-62.7069e-72.8739e-8133.0341
MUGIOCHHHE2.5645e-69.0915e-76.7786e-73.7789e-71.7593e-75.4264e-64.8464e-62.2747e-73.1067e-8133.0341
VARE IVHHZ2.5247e-64.9859e-74.8790e-71.8664e-71.0113e-76.7542e-62.6056e-61.2563e-71.4513e-8136.1332
VARE IVHHN2.5394e-68.7660e-76.7209e-73.4561e-72.3124e-77.1420e-65.4470e-62.9881e-72.3047e-8136.1332
VARE IVHHE2.9910e-69.3101e-76.8156e-73.1860e-71.4040e-74.6626e-65.0968e-61.6690e-72.2558e-8136.1332
PII IVHHZ3.2854e-61.1800e-68.2512e-73.0829e-71.9113e-77.3925e-66.5599e-62.9576e-73.2197e-8140.0148
PII IVHHN3.3944e-61.4226e-67.9855e-74.9455e-72.5553e-76.0737e-65.8868e-63.1565e-73.8570e-8140.0148
PII IVHHE3.1760e-68.5913e-78.7916e-73.8691e-71.5823e-76.1136e-65.7297e-62.1657e-72.5717e-8140.0148
RORO GUHHZ2.7859e-66.9683e-75.2201e-72.5730e-78.5343e-89.8160e-61.9144e-61.1571e-71.6210e-8143.4239
RORO GUHHN2.5904e-66.0623e-74.9968e-71.8901e-77.1457e-81.1172e-52.3590e-69.2785e-81.4912e-8143.4239
RORO GUHHE2.9944e-66.8623e-75.8163e-72.8266e-71.0055e-71.1578e-52.7625e-61.4276e-71.9987e-8143.4239
GBOS GUHHZ1.2987e-65.2794e-74.1611e-73.8478e-71.6381e-74.4197e-61.9224e-61.9206e-71.4894e-8152.5247
GBOS GUHHN1.1166e-62.6223e-72.7546e-72.3967e-71.6265e-73.2656e-61.2651e-61.9213e-71.2683e-8152.5247
GBOS GUHHE1.0085e-63.5531e-72.8838e-72.0381e-77.9323e-83.2211e-61.2544e-68.6313e-89.4324e-9152.5247
ORO IVEHZ2.8654e-66.6917e-76.2586e-72.1742e-71.0801e-79.0699e-63.7018e-61.3164e-71.5262e-8157.2307
ORO IVEHN3.9769e-68.8109e-79.0107e-74.5734e-71.5748e-78.0196e-65.5447e-62.0514e-72.3286e-8157.2307
ORO IVEHE3.4232e-67.2684e-77.8606e-73.3731e-71.2195e-76.2592e-66.8100e-61.6013e-71.8080e-8157.2307
MGRO GUHHZ9.8918e-73.2476e-73.4091e-71.4759e-76.2923e-83.3162e-62.1066e-67.2688e-88.9409e-9165.1240
MGRO GUHHN1.1790e-63.1247e-72.7606e-71.3057e-75.6904e-83.1149e-61.8662e-67.8949e-89.1602e-9165.1240
MGRO GUHHE1.4773e-63.5333e-73.6950e-71.9862e-78.5444e-84.1047e-62.7245e-69.6373e-81.1237e-8165.1240
IMI GUHHZ2.4596e-65.5478e-74.2497e-71.8101e-78.7141e-85.4656e-61.8297e-61.0539e-71.2644e-8167.5235
IMI GUHHN3.5283e-67.5521e-75.7627e-72.3580e-71.2714e-76.7542e-62.3892e-61.6402e-71.8956e-8167.5235
IMI GUHHE2.5269e-66.0404e-75.8025e-71.8141e-77.1799e-88.2708e-62.4478e-69.7971e-81.5197e-8167.5235
*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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