MANUAL Location - Area: Costa toscana settentrionale , magnitude (ML): 1.5
2026-10-22 13:21:17 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-10-22 13:56:39

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Earthquake info - Manual location
Event - ID :261022132035
Magnitude (ML) :1.5 +/- 0.2
Origin Time :2026-10-22 13:21:17.359 (UTC)
Location : Latitude: 43.676 N, Longitude: 10.207 E
Area :Costa toscana settentrionale
Depth (km) :6.01
Distances (km) : 16.3 --- Pisa
16.6 --- Livorno
18.8 --- Vecchiano
21.3 --- San Giuliano Terme
22.0 --- Viareggio
23.8 --- Collesalvetti
24.5 --- Massarosa
25.6 --- Calci
27.4 --- Fauglia
27.6 --- Cascina
29.9 --- Vicopisano
30.5 --- Lucca
30.6 --- Camaiore
30.6 --- Lorenzana
31.0 --- Crespina
31.2 --- Buti
31.5 --- Pietrasanta
31.7 --- Orciano Pisano
32.3 --- Forte dei Marmi
32.9 --- Calcinaia

Quality location estimate: Erh: 1.1 km, Erz: 1.8 km, Nf: 26, Gap: 243 °, Rms: 0.14


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.
PIIIV2026-10-22 13:21:22.9000.01300.011.752026-10-22 13:21:26.8500.0802-0.091.3226.8
CMEIT2026-10-22 13:21:23.7210.0200-0.021.712026-10-22 13:21:28.4140.0400-0.011.5332.5
MAIMGU2026-10-22 13:21:24.2200.03210.031.662026-10-22 13:21:29.0400.1715-0.200.8935.5
CARDGU2026-10-22 13:21:25.6000.06630.021.582026-10-22 13:21:32.0700.13640.420.4845.2
CRRIT2026-10-22 13:21:25.9010.0200-0.081.462026-10-22 13:21:32.0550.0400-0.190.9647.2
VGLIT2026-10-22 13:21:26.2380.0200-0.031.602026-10-22 13:21:32.4630.0400-0.350.4549.3
BDIIV2026-10-22 13:21:27.0600.0271-0.111.282026-10-22 13:21:34.6800.16150.220.9353.6
EQUIGU2026-10-22 13:21:27.0900.02710.081.462026-10-22 13:21:34.1600.16750.111.1055.0
VLCMN2026-10-22 13:21:27.4800.02810.191.022026-10-22 13:21:34.8940.18250.260.8456.0
SARMGU2026-10-22 13:21:28.0700.02910.141.232026-10-22 13:21:35.9110.29870.150.8559.0
POPMGU2026-10-22 13:21:28.5100.03010.300.652026-10-22 13:21:36.5240.31170.230.7860.6
GSCLGU2026-10-22 13:21:30.9230.0200-1.280.042026-10-22 13:21:42.5710.3017-0.570.3981.2
MSSAIV2026-10-22 13:21:32.1790.0200-0.930.062026-10-22 13:21:42.7690.0400-1.880.0190.3


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PII IVHH1.282.92e-126.879
CME ITHN1.523.56e-132.514
MAIM GUHH1.341.76e-135.541
CRR ITHN1.934.42e-147.2350
BDI IVHH1.521.67e-153.636
EQUI GUHH1.388.97e-255.0356
VLC MNHH1.447.12e-256.015
SARM GUEH1.461.13e-159.015
POPM GUHH1.552.23e-160.647
GSCL GUHH1.991.60e-181.222
MSSA IVHH1.524.23e-290.3323


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 IVHHZ1.4476e-52.8817e-62.1392e-65.6303e-72.9637e-74.9268e-51.2016e-54.4886e-77.7446e-826.879
PII IVHHN1.0904e-52.6893e-62.4489e-67.9960e-73.6644e-73.9346e-51.8039e-54.8578e-77.0762e-826.879
PII IVHHE1.9191e-54.4824e-62.9491e-61.1128e-64.3819e-76.0554e-51.9117e-55.9839e-78.8698e-826.879
CME ITHNZ2.1787e-52.8647e-62.1008e-67.2187e-73.1559e-74.9021e-51.4052e-54.7204e-76.5998e-832.514
CME ITHNN3.0013e-54.3219e-63.0129e-61.3296e-65.8829e-75.3122e-51.5201e-57.4374e-71.1235e-732.514
CME ITHNE3.4246e-55.8098e-63.5668e-61.0421e-65.2233e-79.5058e-52.6450e-58.8332e-71.4191e-732.514
MAIM GUHHZ1.0599e-51.8195e-61.0987e-64.3337e-71.7301e-73.3070e-55.5434e-62.6706e-73.8370e-835.541
MAIM GUHHN1.4177e-52.7795e-61.5234e-66.5752e-72.3977e-75.3641e-57.4587e-63.1057e-76.1575e-835.541
MAIM GUHHE1.1780e-51.6483e-61.3497e-65.4448e-72.1490e-72.7759e-56.6679e-63.1742e-74.8574e-835.541
CARD GUHHZ3.8612e-54.6213e-62.3459e-65.5134e-73.0821e-77.7494e-59.1047e-64.9235e-79.7075e-845.229
CARD GUHHN8.2672e-51.7442e-58.1575e-61.5524e-69.6031e-72.9332e-42.9421e-51.5509e-63.6167e-745.229
CARD GUHHE8.1337e-51.1827e-54.9556e-61.2612e-67.0067e-73.0966e-41.6325e-51.2784e-62.8139e-745.229
CRR ITHNZ2.8054e-54.6468e-62.2495e-66.4382e-73.7345e-79.4108e-58.4689e-65.0328e-71.0044e-747.2350
CRR ITHNN4.8025e-56.9852e-64.9731e-61.1534e-66.0206e-71.2176e-42.4476e-59.1713e-71.5715e-747.2350
CRR ITHNE3.4202e-54.9669e-63.7274e-61.0983e-64.8856e-71.0234e-42.5884e-56.3788e-71.2140e-747.2350
VGL ITHGZ3.4592e-54.2657e-62.3729e-69.0798e-73.8025e-77.5266e-51.1132e-54.9604e-79.5467e-849.38
VGL ITHGN3.5958e-56.7509e-64.6245e-61.5834e-65.9101e-71.4763e-41.8391e-58.0049e-71.6775e-749.38
VGL ITHGE2.6183e-56.2512e-64.9621e-62.2743e-68.2725e-78.4807e-52.5685e-51.1366e-61.5147e-749.38
BDI IVHHZ9.3023e-61.5454e-61.1390e-63.7806e-71.8259e-72.5362e-56.7760e-62.7314e-74.3891e-853.636
BDI IVHHN2.0492e-53.0723e-61.9009e-66.1685e-72.5261e-77.8792e-56.1994e-63.9017e-77.9462e-853.636
BDI IVHHE1.2590e-51.9264e-61.4256e-65.9390e-71.9980e-73.5973e-55.8612e-62.9700e-75.3477e-853.636
EQUI GUHHZ4.3052e-65.5823e-74.1146e-71.3357e-78.1792e-81.0579e-51.8984e-61.0378e-71.5253e-855.0356
EQUI GUHHN1.1465e-51.2214e-65.9309e-72.2553e-71.0960e-72.4929e-52.4374e-61.4730e-72.6359e-855.0356
EQUI GUHHE9.3119e-61.3892e-67.8153e-72.6359e-71.4798e-72.3112e-54.6833e-62.3745e-73.5236e-855.0356
VLC MNHHZ8.7877e-61.0198e-63.9756e-71.3709e-77.1617e-82.0712e-51.4593e-61.2515e-72.3213e-856.015
VLC MNHHN9.3907e-61.3053e-65.6769e-72.1736e-71.1187e-72.6659e-52.0451e-61.6811e-73.0220e-856.015
VLC MNHHE1.1775e-51.5734e-66.5583e-72.2894e-71.1466e-73.6072e-52.6715e-61.8130e-73.0330e-856.015
SARM GUEHZ7.5303e-61.3050e-67.4543e-72.3730e-71.1775e-72.0623e-52.7576e-61.8852e-72.9571e-859.015
SARM GUEHN6.6557e-61.5773e-61.0318e-65.9382e-72.0132e-72.1488e-53.5175e-62.6655e-74.0253e-859.015
SARM GUEHE6.8390e-61.0964e-66.3729e-73.2751e-71.6497e-72.0379e-52.6998e-62.1895e-72.5447e-859.015
POPM GUHHZ1.1272e-51.6301e-69.0315e-72.8882e-71.3678e-72.4899e-54.0784e-62.2142e-74.3792e-860.647
POPM GUHHN1.4100e-52.9399e-62.1257e-64.8245e-72.3394e-73.9855e-58.6371e-63.4892e-76.8209e-860.647
POPM GUHHE1.3429e-53.2245e-62.2320e-65.6225e-72.7867e-74.3046e-59.8605e-63.9807e-77.3392e-860.647
GSCL GUHHZ2.2230e-65.2670e-74.5283e-72.9335e-71.7361e-71.0307e-51.8364e-61.8906e-71.3829e-881.222
GSCL GUHHN4.7926e-61.3797e-61.4961e-65.2690e-72.1689e-71.6554e-51.0051e-52.8937e-74.2228e-881.222
GSCL GUHHE4.3617e-61.3916e-61.3884e-66.1610e-72.0570e-71.1098e-57.9598e-63.0465e-74.2750e-881.222
MSSA IVHHZ1.6988e-63.4001e-72.3813e-71.0517e-76.0153e-84.1555e-61.4552e-69.0859e-89.0949e-990.3323
MSSA IVHHN2.2895e-65.9453e-73.4309e-71.2472e-76.1424e-81.0872e-51.4132e-67.9113e-81.3050e-890.3323
MSSA IVHHE1.5806e-64.4588e-73.2534e-71.2437e-77.3519e-84.5263e-61.8833e-61.1851e-71.2421e-890.3323
*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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