MANUAL Location - Area: Riviera di ponente , magnitude (ML): 0.7
2025-04-26 15:19:33 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-28 07:22:56

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250426151903
Magnitude (ML) :0.7 +/- 0.2
Origin Time :2025-04-26 15:19:33.177 (UTC)
Location : Latitude: 43.972 N, Longitude: 8.221 E
Area :Riviera di ponente
Depth (km) :18.52
Distances (km) : 5.2 --- Laigueglia
5.6 --- Alassio
6.6 --- Andora
8.8 --- Albenga
9.8 --- Cervo
10.4 --- Villa Faraldi
10.4 --- Villanova d Albenga
10.6 --- San Bartolomeo al Mare
12.2 --- Garlenda
13.0 --- Diano San Pietro
13.0 --- Diano Marina
13.4 --- Diano Castello
13.5 --- Ortovero
13.6 --- Ceriale
13.8 --- Stellanello
14.2 --- Cisano sul Neva
14.6 --- Diano Arentino
14.9 --- Arnasco
15.4 --- Casanova Lerrone
15.5 --- Borghetto Santo Spirito

Quality location estimate: Erh: 1.1 km, Erz: 0.9 km, Nf: 32, Gap: 222 °, 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.
ROROGU2025-04-26 15:19:38.0940.02000.002.072025-04-26 15:19:41.7870.04000.141.4327.4
PVTIT2025-04-26 15:19:38.5010.0200-0.390.442025-04-26 15:19:43.0940.0400-0.061.6431.3
CANOGU2025-04-26 15:19:39.0940.02000.032.012025-04-26 15:19:43.3050.04000.031.8132.5
IMIGU2025-04-26 15:19:38.5000.0110-0.570.552025-04-26 15:19:42.6820.0400-0.710.2533.3
MGROGU2025-04-26 15:19:39.9200.0090-0.510.622025-04-26 15:19:45.3790.0400-0.520.6139.5
SNRMIT2025-04-26 15:19:40.6620.02000.240.842025-04-26 15:19:45.5490.0400-0.101.4142.7
BRDIT2025-04-26 15:19:41.1300.08030.181.242025-04-26 15:19:46.6760.04000.051.6544.8
BIGNGU2025-04-26 15:19:40.8280.0200-0.101.452025-04-26 15:19:46.6340.04000.081.6144.9
MLIGIV2025-04-26 15:19:41.8030.08030.101.612025-04-26 15:19:47.6660.0400-0.350.7046.8
SAOFFR2025-04-26 15:19:43.8750.08030.720.632025-04-26 15:19:50.5960.16040.151.2256.6
BURYGU2025-04-26 15:19:44.1280.10040.780.652025-04-26 15:19:51.6620.20050.960.5160.1
PCPGU2025-04-26 15:19:45.8680.02000.670.592025-04-26 15:19:54.8340.25060.890.5471.1
ENRGU2025-04-26 15:19:46.7180.10040.990.502025-04-26 15:19:55.5920.16040.920.5472.9
STVGU2025-04-26 15:19:48.7900.10041.890.072025-04-26 15:19:57.3770.04000.730.6080.0
MVIFFR2025-04-26 15:19:50.1280.02001.660.092025-04-26 15:20:00.6960.04001.020.4787.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
RORO GUHH0.605.85e-227.4322
PVT ITHN0.797.14e-231.3288
CANO GUHH0.483.24e-232.53
IMI GUHH0.666.35e-233.3256
MGRO GUHH0.713.75e-239.5284
SNRM ITHN1.016.37e-242.7245
BRD ITHN0.924.70e-244.8259
BIGN GUEH0.521.87e-244.9254
SAOF FRHH0.429.37e-356.6272
BURY GUHH0.882.36e-260.1249
PCP GUHH0.335.11e-371.122
ENR GUHH1.073.34e-272.9294
STV GUHH0.961.02e-280.0293


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.
(°)
RORO GUHHZ3.2347e-64.4348e-72.8950e-78.0035e-83.6945e-87.4537e-69.9403e-75.7060e-81.0774e-827.4322
RORO GUHHN3.8570e-64.8018e-72.4847e-75.7105e-83.4824e-81.0545e-58.2492e-75.6692e-81.1502e-827.4322
RORO GUHHE5.8085e-61.0389e-64.7041e-71.0755e-76.4457e-81.6223e-51.3299e-61.0657e-72.1358e-827.4322
PVT ITHNZ8.5838e-67.4342e-73.7160e-72.8118e-71.4708e-71.0499e-51.6007e-61.8145e-71.5466e-831.3288
PVT ITHNN2.2401e-52.0990e-64.9082e-72.9510e-71.6182e-71.7983e-52.2234e-62.7232e-74.0853e-831.3288
PVT ITHNE1.4799e-51.4306e-63.9740e-73.0170e-71.5695e-71.4819e-51.7518e-62.1673e-72.9601e-831.3288
CANO GUHHZ2.9873e-63.1929e-71.7907e-77.3315e-86.0961e-83.3498e-69.5777e-79.9985e-81.1136e-832.53
CANO GUHHN3.6602e-64.0564e-72.7680e-71.0278e-73.7411e-84.8170e-61.6335e-65.7267e-81.0985e-832.53
CANO GUHHE2.4708e-64.5240e-73.4296e-71.0930e-74.9718e-89.2857e-61.7358e-67.2994e-81.2107e-832.53
IMI GUHHZ2.4705e-65.2765e-72.6900e-71.1458e-75.2417e-86.0278e-61.0745e-67.9949e-81.4272e-833.3256
IMI GUHHN9.1811e-61.1742e-65.8185e-71.6323e-77.7747e-82.0481e-52.3790e-61.5028e-72.9218e-833.3256
IMI GUHHE4.2167e-67.1637e-73.6201e-71.0451e-74.9279e-87.3315e-61.3272e-67.7414e-81.5467e-833.3256
MGRO GUHHZ1.6131e-61.7380e-71.5025e-75.2507e-81.9992e-82.8898e-61.0799e-63.1108e-84.8323e-939.5284
MGRO GUHHN2.1955e-64.1012e-73.0047e-79.1987e-84.8995e-85.4695e-62.7241e-67.1684e-81.0220e-839.5284
MGRO GUHHE2.0557e-63.5383e-72.9796e-77.2239e-83.4598e-87.2739e-61.9385e-65.3242e-88.6753e-939.5284
SNRM ITHNZ4.4927e-66.0852e-74.3956e-74.8715e-74.5832e-79.3477e-62.6338e-67.8766e-74.3434e-842.7245
SNRM ITHNN5.4907e-67.0679e-76.1886e-73.7099e-71.9667e-71.0168e-53.9008e-63.4304e-72.1696e-842.7245
SNRM ITHNE4.5049e-64.6930e-74.1791e-72.4487e-71.4135e-76.9459e-62.3696e-62.2397e-71.9069e-842.7245
BRD ITHNZ2.2141e-63.3354e-72.8544e-72.2524e-71.3769e-73.5794e-61.5198e-61.9895e-71.1558e-844.8259
BRD ITHNN2.0059e-63.8033e-73.4155e-72.5719e-71.8977e-73.3055e-61.8682e-63.1545e-71.7701e-844.8259
BRD ITHNE1.5405e-63.9977e-72.9712e-72.2400e-71.2103e-74.4154e-61.7347e-61.6182e-71.1402e-844.8259
BIGN GUEHZ2.2961e-62.3501e-78.3532e-82.6420e-81.8073e-83.4475e-64.0860e-72.5768e-84.8777e-944.9254
BIGN GUEHN3.5781e-63.4880e-71.4991e-74.3876e-82.5867e-86.4394e-68.3434e-73.8724e-87.8583e-944.9254
BIGN GUEHE4.2534e-65.0681e-71.4427e-74.1521e-82.1492e-87.8727e-67.8117e-74.1807e-81.0612e-844.9254
SAOF FRHHZ7.0708e-71.2115e-77.3711e-82.5225e-81.1385e-81.3871e-64.6997e-71.6221e-82.5896e-956.6272
SAOF FRHHN7.5197e-79.7612e-86.7063e-81.9916e-81.0483e-81.6636e-64.8320e-71.7330e-82.3310e-956.6272
SAOF FRHHE7.5735e-71.5493e-77.1165e-82.8233e-81.3696e-82.3142e-62.6358e-72.0957e-83.3529e-956.6272
BURY GUHHZ1.4397e-61.9852e-71.0519e-75.1995e-83.0991e-84.4040e-63.9013e-73.7836e-84.2336e-960.1249
BURY GUHHN3.0150e-64.4018e-71.8099e-75.7470e-83.7230e-87.0140e-69.7366e-77.2902e-89.4326e-960.1249
BURY GUHHE2.3790e-63.1268e-71.6951e-77.5979e-83.1526e-85.4212e-65.8905e-75.0738e-88.2509e-960.1249
PCP GUHHZ6.2645e-79.1001e-87.6511e-81.9312e-81.2191e-81.8706e-63.1653e-72.0670e-82.2202e-971.122
PCP GUHHN5.9284e-77.7174e-85.2865e-81.5576e-88.8636e-91.1666e-62.4796e-71.5298e-81.7769e-971.122
PCP GUHHE5.2397e-78.8044e-84.9882e-81.6279e-81.0873e-81.1105e-62.3080e-71.4437e-81.7017e-971.122
ENR GUHHZ2.7509e-63.3622e-71.4299e-74.1386e-82.1368e-85.3499e-67.1985e-73.6000e-88.0221e-972.9294
ENR GUHHN8.0958e-67.6120e-72.5720e-77.5437e-83.8344e-81.3932e-59.6811e-77.5705e-81.5067e-872.9294
ENR GUHHE9.1143e-68.2621e-71.7716e-75.4893e-82.8093e-81.2524e-56.1231e-76.1131e-81.4671e-872.9294
STV GUHHZ8.3575e-71.0982e-77.1156e-82.4040e-89.7303e-92.3044e-64.0026e-71.2969e-82.7124e-980.0293
STV GUHHN8.0788e-71.3643e-79.0116e-83.7736e-81.4369e-82.7497e-64.5191e-72.2057e-83.4663e-980.0293
STV GUHHE1.2818e-61.7063e-78.7611e-82.8518e-81.4900e-82.7427e-64.8186e-72.4177e-83.5274e-980.0293
*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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