MANUAL Location - Area: Appennino modenese , magnitude (ML): 4.0
2025-05-03 03:08:23 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-03 08:50:04

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Earthquake info - Manual location
Event - ID :250503030747
Magnitude (ML) :4.0 +/- 0.2
Origin Time :2025-05-03 03:08:23.754 (UTC)
Location : Latitude: 44.171 N, Longitude: 11.043 E
Area :Appennino modenese
Depth (km) :54.20
Distances (km) : 1.0 --- Castel di Casio
3.7 --- Camugnano
5.5 --- Porretta Terme
8.2 --- Sambuca Pistoiese
9.3 --- Gaggio Montano
10.0 --- Castiglione dei Pepoli
10.2 --- Granaglione
11.9 --- Lizzano in Belvedere
12.6 --- Castel d Aiano
13.2 --- Grizzana Morandi
13.6 --- Montese
13.8 --- Vergato
15.8 --- Vernio
16.1 --- San Benedetto Val di Sambro
16.6 --- Cantagallo
20.1 --- Zocca
20.2 --- Fanano
21.7 --- Monzuno
22.6 --- Sestola
22.7 --- Monghidoro

Quality location estimate: Erh: 1.2 km, Erz: 1.1 km, Nf: 62, Gap: 53 °, Rms: 0.35


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.
ZCCAIV2025-05-03 03:08:33.2800.0341-1.020.272025-05-03 03:08:41.2030.0400-1.420.1258.7
POPMGU2025-05-03 03:08:33.5700.03410.231.392025-05-03 03:08:40.3140.21260.071.3860.9
SEIIV2025-05-03 03:08:34.1600.03310.341.072025-05-03 03:08:41.6550.18850.181.3261.7
MTRZIV2025-05-03 03:08:34.8300.0331-0.091.572025-05-03 03:08:43.5450.04000.161.4464.6
BDIIV2025-05-03 03:08:34.1300.04120.001.692025-05-03 03:08:41.5000.1995-0.031.3866.6
GSCLGU2025-05-03 03:08:34.6100.0351-1.030.282025-05-03 03:08:42.0460.0400-2.420.1368.7
CARDGU2025-05-03 03:08:34.8400.0391-0.051.632025-05-03 03:08:42.3900.2176-0.400.8772.4
SARMGU2025-05-03 03:08:35.5400.0442-0.031.652025-05-03 03:08:44.1700.22560.111.3075.3
RUFIIV2025-05-03 03:08:35.9100.04120.151.552025-05-03 03:08:44.0600.2276-0.580.6575.5
MAIMGU2025-05-03 03:08:35.2200.0422-0.171.362025-05-03 03:08:42.9300.2757-0.740.5175.7
VLCMN2025-05-03 03:08:35.7500.04010.211.442025-05-03 03:08:44.1200.22760.131.2975.8
LMDIV2025-05-03 03:08:36.6700.0401-0.171.342025-05-03 03:08:46.5370.2386-0.111.2276.5
ERBMIV2025-05-03 03:08:36.7200.0401-0.750.372025-05-03 03:08:46.3300.2386-1.440.1679.5
CMEIT2025-05-03 03:08:36.6090.02000.041.672025-05-03 03:08:45.1670.0400-0.530.6284.1
PIIIV2025-05-03 03:08:36.8800.0472-0.031.632025-05-03 03:08:45.8100.2557-0.660.5884.6
RAVAIV2025-05-03 03:08:37.1200.0401-1.890.072025-05-03 03:08:48.0610.0400-2.600.1084.8
EQUIGU2025-05-03 03:08:37.6400.04720.081.632025-05-03 03:08:47.0700.3127-0.241.0589.5
FIVIGU2025-05-03 03:08:38.5140.02000.480.712025-05-03 03:08:48.4570.04000.460.8191.4
NEVIIV2025-05-03 03:08:39.0810.0200-0.420.722025-05-03 03:08:51.2120.0400-0.141.2691.8
OSSCIV2025-05-03 03:08:38.3820.02000.430.832025-05-03 03:08:48.1210.0400-0.041.4191.9
CAVEIV2025-05-03 03:08:37.7900.0442-2.510.122025-05-03 03:08:49.2830.0400-3.690.0094.4
CSNTIV2025-05-03 03:08:39.1100.05820.161.502025-05-03 03:08:49.4100.2907-0.470.8196.7
AULIT2025-05-03 03:08:39.6010.02000.281.252025-05-03 03:08:50.6660.04000.420.89101.1
GRAMGU2025-05-03 03:08:40.1800.05120.021.592025-05-03 03:08:51.9340.30970.221.05101.7
SERMIV2025-05-03 03:08:39.5100.0522-2.270.122025-05-03 03:08:54.0680.4719-0.930.47109.7
PLMAIV2025-05-03 03:08:40.1600.0582-0.061.532025-05-03 03:08:50.8900.5429-1.060.41110.1
BVTIT2025-05-03 03:08:43.5690.02000.031.532025-05-03 03:08:58.5270.04000.790.33123.7
CARIT2025-05-03 03:08:42.8250.0200-0.021.532025-05-03 03:08:56.6360.04000.161.22126.2
VRLIT2025-05-03 03:08:43.4520.0200-0.221.192025-05-03 03:08:57.8310.0400-0.061.23127.0
MSSAIV2025-05-03 03:08:44.0200.0733-0.121.372025-05-03 03:08:58.4480.0400-0.261.06134.4
OPPEIV2025-05-03 03:08:42.6400.0653-1.970.00--:---.-----.---.-- 137.9
GORRGU2025-05-03 03:08:47.7600.07830.291.162025-05-03 03:09:05.8750.04001.520.00157.1
TRESNI2025-05-03 03:08:45.8200.0773-2.300.002025-05-03 03:09:01.8280.0400-4.370.00160.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
ZCCA IVHH4.184.94e+158.7345
POPM GUHH4.189.45e+160.9239
SEI IVHH4.397.32e+161.7117
MTRZ IVHH4.194.19e+164.662
BDI IVHH4.336.68e+166.6251
GSCL GUHH3.962.14e+168.7299
SARM GUEH3.942.02e+175.3272
VLC MNHH3.849.36e+075.8269
ERBM IVEH3.616.87e+079.5299
PII IVHH3.687.13e+084.6220
EQUI GUHH3.625.44e+089.5270
FIVI GUHN4.161.80e+191.4276
NEVI IVHN3.787.37e+091.8309
OSSC IVHH3.899.44e+091.9167
GRAM GUHH4.041.93e+1101.7295
PLMA IVHH3.724.01e+0110.1262
BVT ITHN4.239.94e+0123.7292
CAR ITHN4.137.52e+0126.2275
MSSA IVHH3.652.12e+0134.4278
GORR GUHH3.882.35e+0157.1290


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.
(°)
ZCCA IVHHZ1.2925e-33.1006e-49.9565e-55.8750e-53.4525e-52.5337e-34.5537e-44.5812e-57.4325e-658.7345
ZCCA IVHHN9.8707e-42.7760e-41.8422e-42.6435e-41.3029e-42.1337e-37.8768e-41.5464e-41.4540e-558.7345
ZCCA IVHHE5.7244e-41.4809e-41.3986e-41.1912e-43.8364e-51.1809e-36.3514e-44.8347e-54.6381e-658.7345
POPM GUHHZ1.2478e-32.4202e-42.0833e-47.2323e-53.3840e-53.3489e-31.0609e-34.9139e-57.5638e-660.9239
POPM GUHHN2.0941e-34.7696e-44.1185e-41.7113e-48.8081e-55.8334e-31.8155e-31.1000e-41.1810e-560.9239
POPM GUHHE2.9087e-38.9217e-46.9815e-42.7311e-41.3974e-43.9796e-34.9621e-32.0384e-42.4403e-560.9239
SEI IVHHZ5.0079e-41.6546e-41.9273e-41.1087e-44.5933e-51.0555e-31.1349e-37.2035e-55.6753e-661.7117
SEI IVHHN9.5311e-45.3405e-44.9069e-42.8307e-41.6496e-41.4919e-34.0634e-32.0931e-41.9516e-561.7117
SEI IVHHE4.7858e-41.8976e-42.1274e-42.0438e-49.2376e-56.5275e-41.4625e-31.1100e-47.6475e-661.7117
MTRZ IVHHZ2.6154e-47.4734e-57.9491e-55.7179e-55.0191e-58.4967e-45.3925e-47.5346e-53.6321e-664.662
MTRZ IVHHN4.5877e-42.3119e-42.1364e-42.6345e-41.0311e-46.9908e-41.5078e-31.1076e-49.1391e-664.662
MTRZ IVHHE4.5040e-42.8651e-42.2620e-42.7591e-41.1629e-46.0693e-41.3889e-31.3213e-41.1137e-564.662
BDI IVHHZ7.2809e-42.5186e-41.9028e-41.0876e-45.7073e-51.7524e-31.1919e-36.2162e-57.5587e-666.6251
BDI IVHHN1.8740e-35.6621e-44.2452e-42.3884e-41.0633e-45.7967e-32.3876e-31.5110e-41.7829e-566.6251
BDI IVHHE1.6402e-34.6191e-45.0234e-43.1307e-41.3176e-43.2930e-33.8419e-31.7640e-41.9967e-566.6251
GSCL GUHHZ2.5169e-46.2824e-56.2718e-54.6213e-52.6883e-55.1679e-43.1586e-43.6424e-52.1066e-668.7299
GSCL GUHHN4.3454e-41.6762e-41.6071e-41.0612e-45.7199e-56.9539e-41.0361e-36.7100e-57.1429e-668.7299
GSCL GUHHE3.0943e-41.1948e-41.2492e-49.7344e-54.0165e-55.3597e-45.8811e-45.7222e-55.1817e-668.7299
CARD GUHHZ1.3938e-32.8619e-47.9116e-53.9412e-51.7994e-53.0754e-32.8153e-42.4893e-53.8047e-672.4250
CARD GUHHN2.6249e-34.9692e-43.2353e-49.1337e-54.8294e-58.4844e-31.4211e-37.3842e-51.1181e-572.4250
CARD GUHHE4.8887e-31.0171e-34.3698e-41.0836e-46.6381e-51.4210e-21.1673e-31.1902e-42.2836e-572.4250
SARM GUEHZ1.9864e-46.2721e-55.9661e-53.8158e-51.5163e-53.6667e-42.9883e-42.0757e-52.0595e-675.3272
SARM GUEHN2.1782e-41.2105e-47.8274e-51.2302e-45.1360e-54.4939e-43.0082e-45.7581e-54.1390e-675.3272
SARM GUEHE2.1549e-41.0451e-48.9825e-56.5644e-53.1292e-54.9469e-46.8496e-43.9460e-53.5729e-675.3272
MAIM GUHHZ1.4832e-43.5328e-52.6134e-51.4304e-57.7786e-65.7564e-41.3689e-41.0467e-59.1412e-775.7237
MAIM GUHHN2.9890e-45.1148e-54.5862e-52.0296e-51.0613e-58.9462e-42.5073e-41.4775e-51.4076e-675.7237
MAIM GUHHE2.9062e-45.5637e-54.2981e-52.0303e-59.5867e-69.4977e-42.6656e-41.3157e-51.4127e-675.7237
VLC MNHHZ3.5202e-45.8997e-54.5374e-53.6397e-52.5730e-51.0121e-32.1767e-43.6622e-52.2116e-675.8269
VLC MNHHN1.9834e-47.9308e-56.4772e-54.6135e-52.9672e-55.5420e-42.4095e-44.6587e-53.7563e-675.8269
VLC MNHHE3.6773e-41.0601e-49.1991e-54.8657e-52.3757e-56.9196e-46.8299e-43.4319e-53.1204e-675.8269
ERBM IVEHZ6.4338e-41.2572e-44.4933e-52.9177e-52.2766e-51.2616e-31.6016e-42.3101e-51.4453e-679.5299
ERBM IVEHN2.6898e-46.7272e-54.9905e-53.2532e-51.8852e-56.0338e-42.5171e-43.1223e-52.1578e-679.5299
ERBM IVEHE3.6608e-46.1059e-54.7046e-51.8645e-52.6481e-52.2495e-32.4867e-44.4707e-52.0497e-679.5299
CME ITHNZ4.8274e-41.5009e-41.4094e-46.1179e-52.7530e-51.4427e-37.5245e-43.8239e-54.3598e-684.1248
CME ITHNN1.4249e-35.1248e-43.3047e-41.3879e-47.4501e-52.5137e-31.7678e-31.0202e-41.4491e-584.1248
CME ITHNE8.3108e-42.2950e-42.1049e-49.1518e-54.3915e-52.3931e-31.2381e-37.3146e-56.4793e-684.1248
PII IVHHZ4.8502e-47.3327e-55.4843e-51.4982e-59.7149e-69.7170e-43.8005e-41.7020e-51.8976e-684.6220
PII IVHHN3.2273e-48.1191e-56.7311e-51.6988e-51.0235e-51.1568e-33.6661e-41.6722e-52.1385e-684.6220
PII IVHHE3.1736e-47.4762e-56.4760e-52.5199e-51.1425e-51.1212e-34.3692e-41.5041e-52.0271e-684.6220
EQUI GUHHZ1.2919e-43.2614e-53.2983e-51.9013e-51.1448e-53.7329e-42.1014e-41.6529e-51.0961e-689.5270
EQUI GUHHN1.3946e-44.4328e-54.1033e-52.4852e-51.4649e-54.6360e-42.7845e-41.7831e-51.6520e-689.5270
EQUI GUHHE1.2942e-44.1897e-53.4367e-51.8810e-51.4724e-53.3883e-41.5860e-42.0029e-51.4004e-689.5270
FIVI GUHNZ4.7533e-41.0474e-48.7797e-54.8761e-53.2565e-51.5758e-34.8823e-44.0042e-53.5286e-691.4276
FIVI GUHNN5.5202e-41.7053e-41.8051e-46.1146e-52.7803e-51.2711e-31.3780e-33.6820e-54.5749e-691.4276
FIVI GUHNE4.5950e-41.4671e-41.2998e-48.1745e-54.9002e-51.4889e-38.1648e-45.9515e-55.6305e-691.4276
NEVI IVHNZ1.0905e-42.2366e-51.9342e-52.4306e-52.1440e-52.0829e-41.0295e-43.2445e-51.1872e-691.8309
NEVI IVHNN1.1133e-43.7516e-53.7128e-51.9828e-51.3306e-52.4086e-42.0619e-42.2548e-51.2069e-691.8309
NEVI IVHNE1.4756e-45.7642e-55.0916e-54.0776e-52.2899e-52.6951e-43.3316e-43.1983e-52.0392e-691.8309
OSSC IVHHZ4.3022e-45.3139e-53.3073e-52.3983e-51.5652e-57.6574e-41.7430e-42.7152e-51.1044e-691.9167
OSSC IVHHN2.4044e-45.8311e-54.7313e-53.6762e-52.6563e-57.3906e-42.6726e-44.4199e-52.1142e-691.9167
OSSC IVHHE3.2780e-49.4445e-57.5332e-53.9971e-52.2822e-59.3609e-44.1677e-42.3775e-52.7100e-691.9167
GRAM GUHHZ1.5727e-44.1411e-53.9982e-52.0583e-51.5450e-53.4728e-41.9628e-41.7557e-51.2998e-6101.7295
GRAM GUHHN2.2756e-41.1477e-41.2057e-49.1448e-53.1830e-55.7485e-46.9378e-44.7890e-54.0837e-6101.7295
GRAM GUHHE3.6982e-41.6445e-41.5776e-46.4788e-53.1793e-55.8125e-49.5201e-44.3657e-54.9509e-6101.7295
PLMA IVHHZ9.4456e-52.0408e-51.7694e-51.0263e-55.1001e-63.3800e-41.1559e-46.4514e-65.9984e-7110.1262
PLMA IVHHN1.6089e-43.5846e-53.6549e-51.2715e-55.5873e-65.5087e-42.2254e-46.9027e-61.0773e-6110.1262
PLMA IVHHE1.2977e-43.7133e-53.0392e-51.6250e-58.3232e-63.8613e-42.0815e-41.1357e-51.2784e-6110.1262
BVT ITHNZ5.8385e-52.2057e-52.1320e-51.2041e-56.6874e-61.4571e-41.7037e-48.8809e-66.9919e-7123.7292
BVT ITHNN1.4017e-46.5330e-56.2461e-53.6051e-51.9140e-52.1016e-45.7311e-42.0162e-52.4154e-6123.7292
BVT ITHNE1.4250e-47.2864e-54.9977e-54.7961e-53.7182e-52.6585e-42.2079e-45.0872e-53.1790e-6123.7292
CAR ITHNZ7.9204e-52.6832e-52.7730e-51.9043e-57.8813e-62.7382e-41.6127e-47.9436e-68.0075e-7126.2275
CAR ITHNN2.5602e-47.1507e-57.2152e-54.1862e-51.3431e-57.3969e-43.0842e-41.8677e-52.0636e-6126.2275
CAR ITHNE1.8509e-45.5861e-56.1002e-54.3349e-51.2970e-54.6745e-43.1270e-41.6189e-51.8317e-6126.2275
MSSA IVHHZ4.2722e-59.6219e-68.8855e-65.7695e-65.4419e-61.6099e-45.3788e-55.7291e-64.0560e-7134.4278
MSSA IVHHN7.0058e-52.0338e-51.7193e-51.0826e-55.5541e-61.8317e-48.8663e-55.1350e-64.6599e-7134.4278
MSSA IVHHE6.0844e-51.9666e-51.8232e-51.0482e-54.7876e-61.2530e-48.8099e-56.2546e-65.3260e-7134.4278
GORR GUHHZ6.4379e-51.1878e-59.4644e-64.5934e-63.0811e-62.0003e-46.5390e-53.7877e-63.3866e-7157.1290
GORR GUHHN3.4255e-58.3771e-66.3880e-63.3060e-61.7836e-61.0495e-44.1393e-52.6312e-62.1953e-7157.1290
GORR GUHHE4.8249e-51.3496e-58.0501e-63.9514e-62.3574e-61.6272e-44.4806e-52.7306e-63.0192e-7157.1290
*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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