MANUAL Location - Area: Costa toscana settentrionale , magnitude (ML): 1.4
2026-09-28 08:48:09 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-28 10:42:28

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Earthquake info - Manual location
Event - ID :260928084747
Magnitude (ML) :1.4 +/- 0.2
Origin Time :2026-09-28 08:48:09.037 (UTC)
Location : Latitude: 43.668 N, Longitude: 10.213 E
Area :Costa toscana settentrionale
Depth (km) :13.39
Distances (km) : 15.6 --- Livorno
16.1 --- Pisa
19.0 --- Vecchiano
21.3 --- San Giuliano Terme
22.7 --- Viareggio
23.0 --- Collesalvetti
25.1 --- Massarosa
25.3 --- Calci
26.6 --- Fauglia
27.1 --- Cascina
29.5 --- Vicopisano
29.7 --- Lorenzana
30.2 --- Crespina
30.6 --- Lucca
30.8 --- Orciano Pisano
30.9 --- Buti
31.2 --- Camaiore
32.3 --- Pietrasanta
32.5 --- Calcinaia
32.5 --- Lari

Quality location estimate: Erh: 1.3 km, Erz: 3.9 km, Nf: 30, Gap: 144 °, Rms: 0.15


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.
PIIIV2026-09-28 08:48:14.8100.0140-0.021.662026-09-28 08:48:19.0700.08620.011.5129.1
CMEIT2026-09-28 08:48:15.6870.0200-0.121.352026-09-28 08:48:20.6450.0400-0.121.3335.4
MAIMGU2026-09-28 08:48:16.2300.02410.051.612026-09-28 08:48:21.2900.1795-0.181.1137.8
CARDGU2026-09-28 08:48:17.7400.02410.161.222026-09-28 08:48:24.1700.14440.270.8447.3
VGLIT2026-09-28 08:48:18.3450.02000.061.552026-09-28 08:48:24.7110.0400-0.370.6851.5
BDIIV2026-09-28 08:48:19.0800.0281-0.061.522026-09-28 08:48:26.4660.0400-0.181.1555.4
EQUIGU2026-09-28 08:48:19.0300.0291-0.001.592026-09-28 08:48:26.2590.1725-0.081.1957.2
VLCMN2026-09-28 08:48:19.5000.03010.211.012026-09-28 08:48:26.7400.1765-0.131.1358.0
SARMGU2026-09-28 08:48:20.1000.03110.171.172026-09-28 08:48:28.0500.18550.061.1461.0
POPMGU2026-09-28 08:48:20.5300.03710.400.372026-09-28 08:48:28.3700.2937-0.010.9962.0
AULIT2026-09-28 08:48:20.2510.02000.051.542026-09-28 08:48:28.5130.04000.191.0764.5
GSCLGU2026-09-28 08:48:23.7370.0200-0.420.542026-09-28 08:48:34.9000.2527-0.330.7882.8
MSSAIV2026-09-28 08:48:24.6700.0462-0.390.632026-09-28 08:48:35.8830.0400-0.880.1292.1
GRAMGU2026-09-28 08:48:25.9310.02001.070.002026-09-28 08:48:38.3230.04002.180.0093.3
MORSIFR2026-09-28 08:48:26.6400.0512-0.171.172026-09-28 08:48:38.3310.0400-1.810.00105.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PII IVHH1.141.81e-129.176
CME ITHN1.704.58e-135.413
MAIM GUHH1.241.23e-137.839
BDI IVHH1.431.25e-155.435
EQUI GUHH1.469.94e-257.2355
VLC MNHH1.578.75e-258.014
SARM GUEH1.449.94e-261.015
POPM GUHH1.411.52e-162.046
MSSA IVHH1.473.58e-292.1323
GRAM GUHH1.801.36e-193.3353
MORSIFRHH1.281.66e-2105.9221


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.
(°)
PII IVHHZ1.4978e-52.1269e-61.4226e-63.4740e-71.8260e-74.0510e-55.5738e-63.0502e-75.2872e-829.176
PII IVHHN9.8484e-62.2808e-61.6423e-66.2897e-72.6058e-73.1747e-59.4129e-63.8221e-75.2708e-829.176
PII IVHHE1.1183e-52.1196e-61.7251e-66.3649e-72.9362e-73.0728e-51.2064e-54.3149e-76.4155e-829.176
CME ITHNZ1.7903e-52.7291e-62.1914e-67.1615e-73.3403e-73.8988e-51.3008e-54.5875e-76.8030e-835.413
CME ITHNN3.2796e-54.7456e-63.5247e-61.1989e-65.4291e-75.1053e-51.4595e-56.8379e-71.2650e-735.413
CME ITHNE2.8730e-54.4392e-63.8268e-61.7020e-66.8323e-75.0797e-52.5467e-58.9107e-71.2644e-735.413
MAIM GUHHZ1.0271e-51.3037e-68.0969e-73.7542e-71.3792e-72.8222e-54.4111e-62.1054e-73.4989e-837.839
MAIM GUHHN1.2063e-51.4377e-61.0775e-66.8823e-72.8240e-73.3560e-54.8601e-63.1715e-73.9785e-837.839
MAIM GUHHE1.1485e-51.6491e-69.8829e-74.0383e-71.6155e-72.5178e-54.4106e-62.0804e-73.8189e-837.839
CARD GUHHZ2.0809e-52.9231e-61.5457e-67.9124e-72.8865e-75.6446e-55.5838e-64.5685e-77.6907e-847.328
CARD GUHHN7.0903e-58.0797e-64.0926e-61.3248e-66.6226e-71.7885e-41.5495e-51.0351e-61.9252e-747.328
CARD GUHHE5.9901e-56.0431e-63.1268e-68.4067e-73.7244e-71.0943e-41.4790e-56.2627e-71.3719e-747.328
VGL ITHGZ3.1365e-54.6520e-62.7646e-61.0670e-64.5699e-76.9790e-51.4060e-56.8358e-71.0641e-751.57
VGL ITHGN4.3400e-55.7764e-65.2902e-62.0290e-67.9735e-78.5910e-52.8344e-51.0645e-61.7410e-751.57
VGL ITHGE2.1284e-57.4295e-66.5882e-62.5906e-61.0407e-66.2815e-55.4001e-51.4345e-61.7538e-751.57
BDI IVHHZ1.0168e-51.3603e-69.2957e-73.4702e-71.5015e-71.4163e-56.5848e-62.0267e-72.8429e-855.435
BDI IVHHN1.1077e-51.8460e-61.4291e-64.1531e-71.7207e-73.5802e-57.4448e-62.5946e-74.8870e-855.435
BDI IVHHE1.0598e-51.5841e-61.2383e-65.2907e-71.7492e-73.9077e-55.9556e-62.5051e-73.8121e-855.435
EQUI GUHHZ4.7399e-66.0196e-73.9951e-71.4195e-76.2620e-81.2644e-51.8581e-68.8288e-81.4912e-857.2355
EQUI GUHHN8.7167e-61.1722e-66.4398e-72.1441e-79.0728e-82.2161e-53.1953e-61.3382e-72.4027e-857.2355
EQUI GUHHE1.2513e-51.3523e-68.3487e-73.2125e-71.5574e-71.6626e-55.8407e-62.2343e-73.3818e-857.2355
VLC MNHHZ6.6575e-68.8528e-74.1093e-71.3958e-77.5019e-81.6997e-51.5794e-61.1191e-71.9170e-858.014
VLC MNHHN1.1214e-51.7790e-67.0160e-72.0978e-71.1818e-73.6807e-52.8643e-61.7214e-73.7785e-858.014
VLC MNHHE1.2277e-51.5027e-66.3070e-71.6718e-78.2561e-82.7509e-52.8346e-61.5027e-73.4939e-858.014
SARM GUEHZ4.4331e-67.5705e-76.3934e-72.2704e-79.4994e-81.6106e-54.2630e-61.1468e-71.9686e-861.015
SARM GUEHN5.8175e-61.1439e-69.2992e-75.4617e-71.6466e-71.7797e-54.5883e-62.0555e-72.7276e-861.015
SARM GUEHE8.4918e-61.1571e-67.2627e-73.9529e-71.1639e-71.9535e-54.7165e-61.5503e-72.3493e-861.015
POPM GUHHZ1.1606e-51.8468e-68.0160e-72.0332e-79.7787e-83.1069e-53.7965e-61.7509e-73.3452e-862.046
POPM GUHHN1.0880e-51.8396e-61.3214e-63.4903e-71.6351e-72.6879e-55.7668e-62.4093e-74.2804e-862.046
POPM GUHHE9.0195e-62.0087e-61.5754e-63.8787e-71.7623e-72.1343e-58.9677e-62.7255e-75.1930e-862.046
AUL ITHNZ3.5742e-67.5394e-77.3114e-73.6645e-71.9486e-77.6796e-64.3515e-62.8562e-72.3377e-864.5342
AUL ITHNN5.8947e-61.1652e-61.1748e-64.9140e-72.4287e-71.1300e-57.5214e-63.4406e-73.5977e-864.5342
AUL ITHNE8.8621e-62.6427e-62.3628e-61.0635e-64.4869e-71.4400e-52.0877e-55.4535e-77.3424e-864.5342
GSCL GUHHZ2.2459e-64.0616e-73.5926e-71.4502e-77.3055e-87.6443e-61.9298e-69.8365e-89.8811e-982.821
GSCL GUHHN4.9346e-61.0831e-61.0120e-63.5668e-71.5792e-71.5468e-55.4175e-61.9031e-72.9183e-882.821
GSCL GUHHE6.4270e-62.0598e-61.6721e-66.7882e-73.1387e-71.0525e-51.1162e-54.2048e-76.2829e-882.821
MSSA IVHHZ1.2483e-62.1850e-71.6516e-71.1554e-75.3294e-84.6154e-68.7724e-76.0839e-85.5477e-992.1323
MSSA IVHHN1.8561e-63.6542e-73.0103e-71.3628e-75.6458e-89.3953e-61.2048e-69.0002e-81.0708e-892.1323
MSSA IVHHE1.4537e-63.3379e-72.9935e-71.6072e-75.7254e-84.4546e-61.2815e-68.5693e-88.7305e-992.1323
GRAM GUHHZ2.7551e-65.0599e-74.1493e-71.2345e-76.4948e-85.1379e-62.4517e-67.5562e-81.2983e-893.3353
GRAM GUHHN4.2512e-61.2308e-61.1479e-65.6028e-71.9161e-71.0456e-56.4600e-62.6477e-73.4822e-893.3353
GRAM GUHHE4.3696e-61.1791e-61.0513e-64.0991e-72.1964e-79.3776e-66.7154e-62.9480e-73.4208e-893.3353
MORSIFRHHZ4.7425e-71.4864e-71.2418e-76.5199e-82.8929e-81.4571e-66.4522e-73.6909e-84.0370e-9105.9221
MORSIFRHHN4.9135e-71.2893e-71.2455e-74.9581e-82.0459e-81.8702e-68.5118e-72.8350e-83.8097e-9105.9221
MORSIFRHHE7.5455e-71.8266e-71.5093e-76.4745e-83.0308e-81.6165e-69.6154e-74.2136e-85.0882e-9105.9221
*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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