AUTOMATIC Location - Area: Costa toscana settentrionale , magnitude (ML): 0.8
2026-04-13 20:54:26 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-04-13 20:58:56

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Earthquake info - RsniPicker2 automatic location
Event - ID :260413205404
Magnitude (ML) :0.8 +/- 0.4
Origin Time :2026-04-13 20:54:26.549 (UTC)
Location : Latitude: 43.883 N, Longitude: 9.931 E
Area :Costa toscana settentrionale
Depth (km) :6.54
Distances (km) : 20.7 --- Ameglia (SP)
20.8 --- Portovenere (SP)
21.5 --- Forte dei Marmi (LU)
21.6 --- Lerici (SP)
21.7 --- Carrara (MS)
22.2 --- Massa (MS)
24.9 --- Ortonovo (SP)
24.9 --- Montignoso (MS)
25.2 --- Castelnuovo Magra (SP)
25.6 --- Viareggio (LU)
25.6 --- Sarzana (SP)
25.7 --- Pietrasanta (LU)
26.2 --- Arcola (SP)
26.4 --- La Spezia (SP)
27.0 --- Seravezza (LU)
28.8 --- Riomaggiore (SP)
29.1 --- Fosdinovo (MS)
29.1 --- Vezzano Ligure (SP)
30.7 --- Camaiore (LU)
31.0 --- Santo Stefano di Magra (SP)

Quality location estimate:
Erh: 3.5 km, Erz: 3.4 km, Nf: 13, Gap: 138°, Rms: 0.264 s
Stazioni validate: 8


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.
PLMAIV2026-04-13 20:54:30.7600.0380-0.012.062026-04-13 20:54:33.7990.0941-0.041.7020.7
EQUIGU2026-04-13 20:54:33.2300.02200.012.012026-04-13 20:54:36.6500.1022-1.420.2236.8
MAIMGU2026-04-13 20:54:34.5490.0250-0.410.282026-04-13 20:54:39.3750.1342-1.780.0945.5
CARDGU2026-04-13 20:54:34.7200.0270-0.101.482026-04-13 20:54:39.8300.1632-1.080.3547.4
SARMGU2026-04-13 20:54:35.5490.02900.061.65--:---.-----.---.-- 50.8
POPMGU2026-04-13 20:54:38.5090.03700.051.592026-04-13 20:54:46.5200.1972-0.840.4268.9
MORSIFR--:---.-----.---.--2026-04-13 20:55:00.1700.4312-0.310.74113.3
CAVEIV2026-04-13 20:54:52.3690.0731-0.760.43--:---.-----.---.-- 138.8


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth Used
PLMA IV0.304.79e-220.7342SI
EQUI GU0.502.47e-236.829SI
MAIM GU0.501.67e-245.586SI
CARD GU1.105.79e-247.470SI
SARM GU0.401.26e-250.848SI
POPM GU1.004.59e-268.975SI
MORSIFR1.502.56e-2113.3204SI


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.
(°)
PLMA IVHHZ8.6245e-69.4599e-70.0000e+03.7711e-77.7128e-71.2003e-66.4714e-69.7835e-72.1264e-71.8877e-820.7342
PLMA IVHHN9.9320e-69.3572e-70.0000e+04.7970e-78.5413e-78.5413e-72.0807e-51.0084e-61.8466e-72.0561e-820.7342
PLMA IVHHE1.1022e-51.5171e-60.0000e+05.3830e-71.0396e-61.5333e-62.0266e-58.8228e-72.1626e-72.7817e-820.7342
EQUI GUHHZ1.9129e-61.8654e-70.0000e+01.4146e-72.6627e-73.6744e-73.0994e-65.5504e-77.1657e-81.0645e-836.829
EQUI GUHHN2.5919e-62.6766e-70.0000e+01.4610e-72.9407e-72.9407e-73.9157e-64.2552e-71.0838e-71.3750e-836.829
EQUI GUHHE3.1121e-64.2323e-70.0000e+02.0433e-74.3776e-76.6099e-76.1001e-67.2320e-71.0575e-71.2120e-836.829
MAIM GUHHZ1.0828e-61.5784e-70.0000e+09.3156e-81.8403e-72.7007e-72.4525e-63.2005e-78.3719e-82.5415e-845.586
MAIM GUHHN1.7940e-61.8494e-70.0000e+01.2661e-72.4594e-72.4594e-72.5807e-64.0729e-78.9213e-81.4458e-845.586
MAIM GUHHE1.5226e-62.1853e-70.0000e+01.6955e-73.0670e-74.3070e-73.2427e-67.4017e-79.2461e-81.4046e-845.586
CARD GUHHZ4.2386e-65.1975e-70.0000e+02.3858e-74.5132e-76.5483e-77.4820e-63.8612e-79.5079e-81.2579e-847.470
CARD GUHHN9.3386e-69.7596e-70.0000e+06.7596e-71.1812e-61.1812e-62.2316e-51.0364e-61.5094e-73.2655e-847.470
CARD GUHHE7.3928e-68.1062e-70.0000e+05.0855e-78.7728e-71.2271e-61.7029e-51.1944e-68.1802e-81.8882e-847.470
SARM GUEHZ1.3956e-61.7266e-70.0000e+01.0158e-71.9286e-72.7984e-72.5331e-65.2408e-74.2438e-81.4162e-850.848
SARM GUEHN1.4873e-62.0204e-70.0000e+01.3118e-72.6525e-72.6525e-73.3394e-63.5146e-71.0540e-71.4054e-850.848
SARM GUEHE1.4280e-61.7196e-70.0000e+01.0727e-72.0074e-73.0024e-73.7695e-63.4674e-78.4265e-88.9471e-950.848
POPM GUHHZ3.2712e-64.1690e-70.0000e+02.4051e-74.5980e-76.7618e-75.5586e-66.9308e-75.5502e-81.2468e-868.975
POPM GUHHN3.5837e-65.0272e-70.0000e+03.9320e-76.4701e-76.4701e-77.6190e-61.2583e-69.3103e-81.2368e-868.975
POPM GUHHE3.4014e-66.1823e-70.0000e+04.7252e-78.1153e-71.1152e-67.6691e-61.9837e-61.1408e-71.6456e-868.975
MORSIFRHHZ3.4737e-72.2704e-70.0000e+03.0957e-82.0391e-75.3343e-78.4077e-71.7874e-74.0262e-75.6603e-8113.3204
MORSIFRHHN1.6882e-71.6015e-70.0000e+03.2279e-81.5996e-71.5996e-74.9120e-72.0997e-72.0056e-74.1636e-8113.3204
MORSIFRHHE2.1772e-71.0045e-70.0000e+02.5752e-81.1512e-72.5967e-74.2078e-71.3937e-71.5190e-72.7578e-8113.3204
*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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