MANUAL Location - Area: Versilia , magnitude (ML): 1.9
2025-07-16 06:30:34 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-16 06:53:53

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Earthquake info - Manual location
Event - ID :250716062921
Magnitude (ML) :1.9 +/- 0.2
Origin Time :2025-07-16 06:30:34.459 (UTC)
Location : Latitude: 44.060 N, Longitude: 10.123 E
Area :Versilia
Depth (km) :3.66
Distances (km) : 3.7 --- Massa
4.6 --- Carrara
6.2 --- Montignoso
7.1 --- Ortonovo
9.6 --- Castelnuovo Magra
11.0 --- Seravezza
11.3 --- Forte dei Marmi
11.9 --- Fosdinovo
13.0 --- Ameglia
14.1 --- Sarzana
14.2 --- Minucciano
14.3 --- Vagli Sotto
14.3 --- Pietrasanta
15.4 --- Stazzema
16.4 --- Casola in Lunigiana
16.9 --- Lerici
17.5 --- Careggine
18.1 --- Arcola
19.6 --- Giuncugnano
19.6 --- Camaiore

Quality location estimate: Erh: 0.5 km, Erz: 0.8 km, Nf: 49, Gap: 128 °, Rms: 0.25


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.
EQUIGU2025-07-16 06:30:37.2000.0110-0.012.092025-07-16 06:30:38.5800.0380-0.610.5312.7
CMEIT2025-07-16 06:30:38.6520.0200-0.051.912025-07-16 06:30:40.9640.0400-0.840.3918.9
FIVIGU2025-07-16 06:30:38.7330.02000.051.862025-07-16 06:30:41.6040.0400-0.091.5520.4
AULIT2025-07-16 06:30:38.6080.0200-0.022.052025-07-16 06:30:41.6110.04000.021.8620.7
PLMAIV2025-07-16 06:30:39.0000.01600.032.022025-07-16 06:30:41.8680.3147-0.380.8721.8
VLCMN2025-07-16 06:30:39.4700.01600.310.682025-07-16 06:30:42.5770.0691-0.031.7124.2
SARMGU2025-07-16 06:30:39.8500.0180-0.002.062025-07-16 06:30:43.4600.2106-0.350.8726.6
CARDGU2025-07-16 06:30:40.5300.03810.480.712025-07-16 06:30:43.9200.0832-0.221.0029.3
MAIMGU2025-07-16 06:30:41.2700.02110.031.882025-07-16 06:30:45.3990.0972-0.860.3833.9
CARIT2025-07-16 06:30:42.7950.0200-0.131.332025-07-16 06:30:48.3380.0400-0.780.4645.4
ERBMIV2025-07-16 06:30:43.7900.02310.141.232025-07-16 06:30:50.4800.2246-0.011.2146.4
GRAMGU2025-07-16 06:30:43.7300.02910.430.772025-07-16 06:30:50.6780.04001.340.0348.4
GSCLGU2025-07-16 06:30:44.2200.02510.111.392025-07-16 06:30:50.6800.1464-0.520.6849.4
PIIIV2025-07-16 06:30:43.9500.02410.021.742025-07-16 06:30:50.0800.4339-0.920.4049.6
POPMGU2025-07-16 06:30:44.0900.04420.410.782025-07-16 06:30:50.9220.51090.350.7750.9
VRLIT2025-07-16 06:30:42.3810.0200-2.140.002025-07-16 06:30:51.7150.0400-0.161.2153.9
MSSAIV2025-07-16 06:30:44.5400.0432-0.300.75--:---.-----.---.-- 56.2
BVTIT2025-07-16 06:30:45.4110.0200-0.420.632025-07-16 06:30:53.3400.0400-0.580.6160.6
GORRGU2025-07-16 06:30:50.7400.04620.510.642025-07-16 06:31:02.5340.04000.191.1089.9
RNCAGU2025-07-16 06:30:52.9800.05320.550.592025-07-16 06:31:05.9560.04000.890.25103.9
OSSCIV2025-07-16 06:30:54.4280.02000.510.652025-07-16 06:31:07.8300.0400-0.290.96108.1
RUFIIV2025-07-16 06:30:55.0500.05620.071.302025-07-16 06:31:09.4110.0400-0.530.72113.7
CSNTIV2025-07-16 06:30:54.6600.0200-0.580.612025-07-16 06:31:09.5750.0400-0.780.48114.2
PCPGU2025-07-16 06:30:57.9400.06930.680.422025-07-16 06:31:13.2610.04000.151.01136.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
EQUI GUHH1.783.63e+012.712
CME ITHN1.862.15e+018.9129
FIVI GUHN1.841.77e+020.41
PLMA IVHH1.598.58e-121.8267
VLC MNHH1.554.75e-124.262
CARD GUHH1.869.40e-129.397
MAIM GUHH1.795.35e-133.9119
CAR ITHN2.066.45e-145.4298
ERBM IVEH1.753.02e-146.430
GRAM GUHH1.876.56e-148.4355
GSCL GUHH2.045.19e-149.449
PII IVHH1.601.84e-149.6139
POPM GUHH1.937.60e-150.992
BVT ITHN1.992.97e-160.6330
GORR GUHH2.302.56e-189.9313
RNCA GUHH2.472.67e-1103.9297
OSSC IVHH2.091.03e-1108.1123
PCP GUHH2.025.24e-2136.5294


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.
(°)
EQUI GUHHZ7.9792e-52.3679e-51.7847e-51.5600e-51.6793e-52.5808e-41.0189e-42.4245e-51.0649e-612.712
EQUI GUHHN9.0409e-52.1510e-51.7174e-52.4568e-52.3440e-53.2479e-41.0514e-42.6637e-51.0960e-612.712
EQUI GUHHE8.6962e-52.5928e-52.1803e-51.7470e-51.1049e-52.4628e-41.3097e-41.6003e-58.5913e-712.712
CME ITHNZ3.0056e-57.4930e-67.0424e-65.9016e-66.2822e-67.6442e-54.8604e-58.5592e-63.4162e-718.9129
CME ITHNN5.7950e-51.7943e-51.7089e-59.5314e-61.0616e-58.9886e-52.0468e-41.4957e-55.8994e-718.9129
CME ITHNE5.2675e-51.6260e-51.4986e-58.5954e-65.6968e-68.0698e-51.3418e-46.4936e-65.1409e-718.9129
FIVI GUHNZ7.0142e-51.1465e-59.2190e-68.2188e-68.0171e-69.3938e-54.2240e-51.1390e-54.5604e-720.41
FIVI GUHNN4.4693e-51.4559e-51.4752e-51.0102e-57.3457e-61.0164e-49.1093e-51.2121e-55.4978e-720.41
FIVI GUHNE3.8763e-51.1630e-58.8782e-69.5826e-68.4291e-67.1892e-56.7525e-59.8032e-64.8538e-720.41
PLMA IVHHZ1.7013e-54.7319e-63.8400e-64.7262e-62.8170e-62.7624e-52.0942e-53.5669e-61.8642e-721.8267
PLMA IVHHN2.4274e-55.8458e-64.6964e-63.7758e-61.5474e-66.1366e-52.3296e-51.6563e-61.9087e-721.8267
PLMA IVHHE2.7536e-56.3084e-65.1269e-65.0259e-62.4838e-66.5462e-53.1836e-53.2844e-62.4822e-721.8267
VLC MNHHZ8.9177e-62.7885e-61.6824e-62.2468e-63.0916e-62.2797e-58.8680e-65.7036e-61.4517e-724.262
VLC MNHHN9.2545e-64.3022e-62.8682e-63.0588e-62.2649e-63.0939e-52.1232e-52.6077e-61.5253e-724.262
VLC MNHHE1.4880e-54.7632e-62.4291e-62.3437e-62.7147e-63.6920e-51.1815e-55.2431e-61.5580e-724.262
SARM GUEHZ7.6295e-62.6248e-62.7246e-61.4614e-66.9258e-71.7006e-52.9017e-59.3530e-78.8677e-826.658
SARM GUEHN1.0962e-53.7987e-64.0516e-64.3496e-61.8083e-62.1092e-52.2539e-51.8034e-61.4521e-726.658
SARM GUEHE7.7301e-63.2347e-62.6108e-63.1123e-61.7517e-61.6678e-51.8993e-51.6586e-61.0895e-726.658
CARD GUHHZ2.8253e-57.7177e-64.1526e-65.5095e-62.8325e-64.5284e-51.6624e-53.4948e-62.2525e-729.397
CARD GUHHN6.2568e-51.0208e-58.7206e-63.8115e-61.5539e-61.4663e-43.5391e-52.1735e-63.2094e-729.397
CARD GUHHE6.6276e-59.8170e-67.4792e-64.1881e-64.0239e-61.0485e-42.9643e-55.5585e-62.7953e-729.397
MAIM GUHHZ7.8571e-62.5894e-62.4000e-62.6742e-61.8111e-61.4078e-51.4062e-53.1822e-61.0645e-733.9119
MAIM GUHHN1.2836e-53.0268e-62.9431e-61.7123e-66.2952e-72.2123e-51.5829e-57.3507e-78.7095e-833.9119
MAIM GUHHE1.0770e-54.2396e-63.6894e-62.4890e-61.2374e-62.5568e-52.4792e-51.7786e-61.6314e-733.9119
CAR ITHNZ7.7774e-62.3581e-62.6983e-61.4232e-66.0520e-71.4515e-52.2741e-57.1192e-78.9641e-845.4298
CAR ITHNN1.1850e-53.6060e-63.7184e-61.8400e-67.6098e-72.6076e-53.3524e-51.0406e-61.1775e-745.4298
CAR ITHNE1.3234e-55.6707e-64.8464e-63.2742e-61.1722e-63.0765e-53.6973e-51.5723e-61.8733e-745.4298
ERBM IVEHZ7.6121e-61.4169e-61.3618e-61.3275e-61.6388e-62.2015e-59.8005e-62.5883e-67.8564e-846.430
ERBM IVEHN1.0624e-53.0408e-62.4413e-68.4398e-74.5279e-71.8593e-52.0577e-56.4345e-79.3846e-846.430
ERBM IVEHE5.8751e-61.4852e-61.4032e-67.8263e-76.8737e-71.8079e-51.2816e-51.0840e-64.8960e-846.430
GRAM GUHHZ9.6276e-63.6973e-62.4233e-62.1372e-62.3624e-61.3819e-51.7381e-54.2381e-61.4365e-748.4355
GRAM GUHHN1.3771e-54.9065e-65.3451e-63.4532e-62.0465e-62.1728e-53.7516e-53.2652e-61.5252e-748.4355
GRAM GUHHE1.5153e-55.4452e-64.9705e-62.2876e-61.1787e-62.5346e-53.6890e-51.6837e-61.8849e-748.4355
GSCL GUHHZ3.8698e-61.6294e-61.4470e-61.6217e-61.2262e-69.2868e-61.1133e-51.6348e-68.9785e-849.449
GSCL GUHHN1.0711e-53.6368e-63.4478e-62.4407e-61.6716e-61.6234e-52.4378e-52.1742e-61.4924e-749.449
GSCL GUHHE7.9753e-62.8588e-62.9228e-61.8114e-68.7030e-79.7946e-61.9708e-59.0267e-79.1085e-849.449
PII IVHHZ5.6552e-61.5147e-61.3076e-64.8367e-72.7923e-71.2658e-57.8731e-63.8320e-74.1972e-849.6139
PII IVHHN5.0342e-61.6407e-61.3432e-65.3518e-72.6116e-71.0431e-57.2834e-63.3865e-74.3247e-849.6139
PII IVHHE7.3676e-62.1893e-61.8286e-68.1014e-74.0589e-71.1478e-51.4427e-55.5011e-75.9196e-849.6139
POPM GUHHZ1.1900e-53.7555e-63.2662e-61.3270e-65.5363e-74.1127e-52.6062e-57.4143e-79.3254e-850.992
POPM GUHHN3.6047e-58.5605e-66.2724e-61.9671e-67.8868e-76.3364e-53.1121e-51.2696e-62.1291e-750.992
POPM GUHHE2.2353e-57.1485e-66.9147e-62.5470e-61.0114e-63.4360e-54.7022e-51.3194e-61.9227e-750.992
BVT ITHNZ3.3790e-61.2663e-61.3046e-61.7563e-66.1199e-79.7101e-65.4836e-65.5342e-76.1978e-860.6330
BVT ITHNN4.9797e-61.7510e-61.8929e-62.3842e-61.0163e-61.3350e-51.3560e-51.0257e-68.3158e-860.6330
BVT ITHNE6.2179e-62.3433e-62.0676e-61.4482e-66.8753e-72.1564e-51.3338e-58.9118e-77.2303e-860.6330
GORR GUHHZ4.7026e-61.2609e-61.1629e-66.4734e-73.6304e-79.6477e-65.3991e-63.8979e-74.0050e-889.9313
GORR GUHHN5.4330e-62.0744e-61.8373e-61.3616e-64.7855e-71.0883e-51.3717e-55.9830e-76.9871e-889.9313
GORR GUHHE3.6489e-61.3950e-61.1394e-68.8435e-74.8595e-79.3969e-66.7301e-64.9646e-73.9448e-889.9313
RNCA GUHHZ3.7655e-61.0189e-61.0813e-67.8298e-73.6751e-71.0915e-57.6745e-64.3031e-73.2118e-8103.9297
RNCA GUHHN4.1751e-61.9409e-61.5600e-61.7927e-66.8587e-79.5329e-68.0411e-67.5396e-77.2336e-8103.9297
RNCA GUHHE5.6246e-61.5890e-61.4730e-61.1056e-64.3413e-71.4624e-57.7493e-65.0268e-75.5094e-8103.9297
OSSC IVHHZ1.1948e-64.1839e-74.8852e-73.6978e-71.6604e-73.1538e-63.4442e-61.9151e-71.7435e-8108.1123
OSSC IVHHN1.1676e-66.8924e-76.3843e-74.4435e-72.2790e-73.0487e-64.9369e-63.6667e-72.2946e-8108.1123
OSSC IVHHE2.3862e-68.4492e-78.0941e-76.7671e-73.2199e-73.1493e-65.5847e-64.1341e-72.6163e-8108.1123
PCP GUHHZ5.8750e-72.0836e-71.8131e-71.6570e-76.1867e-81.3377e-61.2132e-66.1778e-86.1305e-9136.5294
PCP GUHHN6.1779e-72.8251e-72.2600e-72.6362e-71.0982e-71.5351e-61.5300e-61.0985e-71.0177e-8136.5294
PCP GUHHE6.7022e-72.4108e-72.6002e-71.6650e-76.7150e-81.5824e-61.6167e-67.9748e-88.0558e-9136.5294
*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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