AUTOMATIC Location - Area: Costa toscana settentrionale , magnitude (ML): 1.1
2026-09-11 23:42:48 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-11 23:46:12

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Earthquake info - RsniPicker2 automatic location
Event - ID :260911234115
Magnitude (ML) :1.1 +/- 0.3
Origin Time :2026-09-11 23:42:48.169 (UTC)
Location : Latitude: 43.685 N, Longitude: 10.229 E
Area :Costa toscana settentrionale
Depth (km) :6.04
Distances (km) : 14.4 --- Pisa (PI)
16.6 --- Livorno (LI)
16.8 --- Vecchiano (PI)
19.3 --- San Giuliano Terme (PI)
20.7 --- Viareggio (LU)
22.7 --- Collesalvetti (LI)
22.8 --- Massarosa (LU)
23.7 --- Calci (PI)
25.9 --- Cascina (PI)
26.4 --- Fauglia (PI)
28.2 --- Vicopisano (PI)
28.5 --- Lucca (LU)
29.1 --- Camaiore (LU)
29.4 --- Buti (PI)
29.7 --- Lorenzana (PI)
29.9 --- Crespina (PI)
30.3 --- Pietrasanta (LU)
31.1 --- Orciano Pisano (PI)
31.3 --- Calcinaia (PI)
31.4 --- Forte dei Marmi (LU)

Quality location estimate:
Erh: 1.6 km, Erz: 4 km, Nf: 17, Gap: 273°, Rms: 0.144 s
Stazioni validate: 9


RsniPicker2 - Automatic location results
Station Net P arrival times P pick
err		 P pick
weight		 P res Nll
weight		 S arrival time S pick
err		 S pick
weight		 S res Nll
weight		 Dist.
PIIIV2026-09-11 23:42:53.3800.01000.001.712026-09-11 23:42:57.2090.07510.001.5124.9
MAIMGU2026-09-11 23:42:54.6800.00700.001.682026-09-11 23:42:59.5490.10120.041.3933.6
CARDGU2026-09-11 23:42:55.2200.0120-0.900.062026-09-11 23:43:02.3060.27720.320.7143.4
BDIIV2026-09-11 23:42:57.6300.0160-0.061.442026-09-11 23:43:04.6800.2542-0.080.9851.6
EQUIGU--:---.-----.---.--2026-09-11 23:43:04.5500.1672-0.111.0654.1
VLCMN2026-09-11 23:42:58.0490.02300.181.082026-09-11 23:43:05.7000.16420.650.1754.5
SARMGU2026-09-11 23:42:58.1390.0190-0.370.362026-09-11 23:43:06.2700.17320.101.0857.5
POPMGU2026-09-11 23:42:58.8690.02000.181.092026-09-11 23:43:06.1700.4092-0.360.6358.6
GSCLGU2026-09-11 23:43:02.7800.03000.011.402026-09-11 23:43:13.1740.2442-0.350.6779.6


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth Used
PII IV0.709.17e-224.980SI
MAIM GU0.805.58e-233.640SI
CARD GU1.502.02e-143.428SI
BDI IV1.106.37e-251.635SI
EQUI GU1.104.96e-254.1354SI
SARM GU1.004.57e-257.514SI
POPM GU1.006.35e-258.647SI
GSCL GU1.708.16e-279.621SI


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)		 PGV
(m/s)		 PGD
(m)		 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 IVHHZ4.4303e-68.4198e-70.0000e+06.3019e-71.0540e-61.4323e-69.4094e-63.3294e-61.1934e-71.7292e-824.980
PII IVHHN4.5117e-68.5141e-70.0000e+07.4383e-71.2667e-61.2667e-61.2319e-54.3077e-61.6067e-72.2626e-824.980
PII IVHHE3.8088e-61.0326e-60.0000e+08.4799e-71.3815e-61.8502e-69.2854e-65.0267e-61.6802e-73.1401e-824.980
MAIM GUHHZ2.4160e-64.1342e-70.0000e+03.5164e-76.2645e-78.3160e-77.0880e-61.7024e-69.6290e-81.1630e-833.640
MAIM GUHHN4.8203e-66.7075e-70.0000e+04.8923e-78.7399e-78.7399e-71.0268e-52.5351e-61.9221e-71.7300e-833.640
MAIM GUHHE2.8220e-65.3953e-70.0000e+04.7736e-77.8260e-71.0290e-61.0200e-52.2791e-61.5138e-71.2522e-833.640
CARD GUHHZ9.9330e-61.4931e-60.0000e+08.6192e-71.6188e-62.3035e-62.2466e-52.8074e-62.5896e-74.4848e-843.428
CARD GUHHN2.7819e-53.7713e-60.0000e+02.9180e-64.9717e-64.9717e-66.6398e-57.9021e-65.4954e-78.8021e-843.428
CARD GUHHE2.0381e-52.4540e-60.0000e+01.6196e-62.8245e-63.8412e-64.3085e-55.1163e-62.9482e-75.3757e-843.428
BDI IVHHZ1.6923e-62.6983e-70.0000e+02.0812e-73.5563e-74.9861e-73.2911e-61.0497e-64.6944e-86.6014e-951.635
BDI IVHHN2.3446e-63.8224e-70.0000e+03.8697e-76.0714e-76.0714e-77.5416e-61.5234e-66.9214e-89.2478e-951.635
BDI IVHHE1.6778e-62.8069e-70.0000e+02.7488e-74.4674e-75.9497e-76.0726e-61.3522e-69.7615e-88.7430e-951.635
EQUI GUHHZ3.2490e-55.7896e-60.0000e+04.4212e-67.5000e-61.0575e-59.7997e-51.5834e-51.8861e-61.7087e-754.1354
EQUI GUHHN4.4586e-56.7891e-60.0000e+04.8841e-68.5055e-68.5055e-61.2621e-41.5447e-52.0671e-62.2885e-754.1354
EQUI GUHHE4.4857e-58.4602e-60.0000e+06.6461e-61.1288e-51.5369e-51.1010e-43.3195e-51.5285e-62.1910e-754.1354
VLC MNHHZ3.3531e-63.8384e-70.0000e+02.2824e-74.2853e-76.2792e-78.6404e-67.0677e-71.4513e-71.2606e-854.5-1
VLC MNHHN4.2389e-66.2205e-70.0000e+03.5391e-76.5366e-76.5366e-71.2424e-51.0652e-69.2612e-81.3771e-854.5-1
VLC MNHHE4.9405e-65.7848e-70.0000e+02.9682e-74.9238e-76.8545e-77.6998e-61.0711e-61.0357e-71.1009e-854.5-1
SARM GUEHZ1.6312e-63.5529e-70.0000e+03.0337e-74.8420e-76.6979e-76.5070e-61.4260e-67.9980e-88.6786e-957.514
SARM GUEHN1.9415e-64.2849e-70.0000e+04.2114e-77.2648e-77.2648e-76.2258e-61.6839e-61.7803e-71.4569e-857.514
SARM GUEHE2.7569e-63.9808e-70.0000e+03.1676e-75.8510e-77.9108e-77.2087e-61.4563e-69.1656e-81.4380e-857.514
POPM GUHHZ4.6071e-66.6142e-70.0000e+04.6728e-78.3439e-71.1689e-61.3996e-51.7755e-68.8420e-81.6396e-858.647
POPM GUHHN6.4072e-61.0101e-60.0000e+07.1183e-71.2010e-61.2010e-61.4437e-52.2637e-61.1970e-72.1802e-858.647
POPM GUHHE5.3919e-68.8666e-70.0000e+07.6665e-71.2176e-61.6583e-61.2671e-53.1010e-61.3678e-72.1702e-858.647
GSCL GUHHZ7.1929e-71.5709e-70.0000e+01.6141e-72.9137e-74.0314e-73.3464e-68.2757e-71.2203e-71.0012e-879.621
GSCL GUHHN1.6872e-64.5797e-70.0000e+03.9636e-77.1539e-77.1539e-76.2505e-61.7836e-62.2992e-71.5490e-879.621
GSCL GUHHE2.1264e-67.6484e-70.0000e+06.8854e-71.2121e-61.6233e-63.6507e-64.3101e-62.0032e-72.3148e-879.621
*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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