MANUAL Location - Area: Lunigiana , magnitude (ML): 0.5
2026-02-03 20:41:20 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-02-04 11:18:53

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Earthquake info - Manual location
Event - ID :260203204009
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2026-02-03 20:41:20.321 (UTC)
Location : Latitude: 44.207 N, Longitude: 10.160 E
Area :Lunigiana
Depth (km) :8.02
Distances (km) : 1.3 --- Casola in Lunigiana
4.5 --- Fivizzano
5.5 --- Minucciano
6.9 --- Giuncugnano
9.8 --- Comano
11.3 --- Piazza al Serchio
11.5 --- Sillano
11.7 --- Licciana Nardi
13.7 --- Fosdinovo
14.2 --- Vagli Sotto
15.0 --- Camporgiano
15.3 --- Aulla
15.4 --- San Romano in Garfagnana
15.9 --- Ortonovo
16.2 --- Careggine
16.4 --- Castelnuovo Magra
17.4 --- Podenzana
17.5 --- Tresana
17.9 --- Bagnone
18.2 --- Collagna

Quality location estimate: Erh: 0.8 km, Erz: 0.5 km, Nf: 24, Gap: 86 °, Rms: 0.17


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.
FIVIGU2026-02-03 20:41:22.3050.0200-0.011.842026-02-03 20:41:22.9890.0400-0.730.279.5
EQUIGU2026-02-03 20:41:22.5300.00500.161.202026-02-03 20:41:23.8000.0260-0.031.739.6
AULIT2026-02-03 20:41:23.6460.02000.021.902026-02-03 20:41:26.0530.04000.091.6916.9
SARMGU2026-02-03 20:41:24.6750.0200-0.021.822026-02-03 20:41:27.9700.06010.051.7121.4
CMEIT2026-02-03 20:41:26.4130.02000.121.492026-02-03 20:41:30.4450.0400-0.270.4231.4
ERBMIV2026-02-03 20:41:26.8700.0160-0.011.782026-02-03 20:41:30.7570.1865-1.070.1632.2
GRAMGU2026-02-03 20:41:26.6700.01700.171.202026-02-03 20:41:30.9730.04000.290.6633.4
CARDGU2026-02-03 20:41:27.1850.02000.770.022026-02-03 20:41:31.2800.18250.350.6533.7
GSCLGU2026-02-03 20:41:27.8630.0200-0.250.392026-02-03 20:41:33.2300.1243-0.630.2638.6
MAIMGU2026-02-03 20:41:28.4940.02000.420.212026-02-03 20:41:33.9080.04000.061.4842.9
MSSAIV2026-02-03 20:41:29.8530.0200-0.131.022026-02-03 20:41:36.3120.0400-0.910.2453.3
PIIIV2026-02-03 20:41:31.5230.02000.001.592026-02-03 20:41:39.0490.0400-0.830.2761.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
FIVI GUHN0.836.69e-19.5324
EQUI GUHH0.221.64e-19.6187
SARM GUEH0.063.22e-221.498
CME ITHN0.817.36e-231.4158
ERBM IVEH0.644.69e-232.240
CARD GUHH0.452.79e-233.7128
GSCL GUHH0.633.28e-238.665
MAIM GUHH0.291.07e-242.9141
MSSA IVHH0.328.36e-353.3284
PII IVHH0.499.17e-361.9151


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.
(°)
FIVI GUHNZ2.7365e-42.2575e-53.4650e-69.6603e-76.2467e-71.6827e-41.0824e-51.6762e-64.6081e-79.5324
FIVI GUHNN1.6946e-41.8846e-54.6518e-61.3955e-67.7681e-71.4642e-42.3673e-51.5046e-63.6522e-79.5324
FIVI GUHNE7.1394e-51.2646e-56.3826e-61.5804e-69.2285e-71.8095e-42.3181e-51.4594e-62.6512e-79.5324
EQUI GUHHZ1.8075e-52.0476e-67.7912e-72.5660e-71.1912e-72.5642e-53.2145e-61.8503e-74.5888e-89.6187
EQUI GUHHN3.0171e-53.0747e-61.1824e-64.2747e-72.0962e-74.0557e-56.8157e-63.1741e-76.5545e-89.6187
EQUI GUHHE2.7777e-52.5560e-68.4556e-72.7951e-71.2516e-72.8154e-54.2228e-61.8330e-75.0014e-89.6187
SARM GUEHZ1.7427e-62.1807e-71.2847e-75.8010e-82.5329e-83.2329e-68.5612e-73.3418e-85.0209e-921.498
SARM GUEHN2.7266e-64.0471e-72.4110e-71.5207e-76.5489e-86.7821e-66.3711e-78.0752e-89.5710e-921.498
SARM GUEHE2.1048e-62.5245e-71.9330e-79.7024e-85.0416e-83.3371e-61.1570e-66.8791e-86.6998e-921.498
CME ITHNZ4.8011e-66.4658e-73.6517e-73.2216e-71.8140e-78.6541e-61.4866e-62.7380e-71.6756e-831.4158
CME ITHNN7.1312e-61.2676e-67.6275e-73.3683e-71.9072e-71.5018e-53.9735e-62.2505e-73.0141e-831.4158
CME ITHNE8.1286e-61.0314e-66.0420e-72.8715e-71.5153e-71.5075e-52.7878e-61.6819e-72.3617e-831.4158
ERBM IVEHZ2.3892e-63.6143e-72.0216e-77.4218e-84.2414e-86.1872e-67.7539e-76.5810e-81.0134e-832.240
ERBM IVEHN3.0614e-66.1743e-74.3803e-71.2476e-77.9120e-81.1278e-52.3565e-61.1066e-71.7678e-832.240
ERBM IVEHE4.2650e-67.1090e-73.4907e-78.7961e-84.2189e-81.2281e-51.8749e-67.3348e-81.4361e-832.240
CARD GUHHZ3.3495e-63.3577e-79.2563e-83.5024e-82.0250e-88.7106e-63.4119e-72.8903e-86.5294e-933.7128
CARD GUHHN1.2903e-59.2059e-72.3248e-76.1987e-83.9675e-81.0497e-56.5332e-75.6781e-81.6748e-833.7128
CARD GUHHE1.0435e-59.0493e-72.2250e-76.1310e-83.3466e-81.0978e-58.0459e-75.7510e-81.4596e-833.7128
GSCL GUHHZ1.0371e-61.7353e-71.1505e-74.2979e-82.5620e-81.7876e-64.1173e-73.5579e-84.7272e-938.665
GSCL GUHHN1.2733e-62.6781e-72.6360e-71.1837e-74.7265e-83.5536e-61.2402e-67.0838e-88.0089e-938.665
GSCL GUHHE1.2521e-63.8572e-72.9420e-71.2171e-77.0192e-82.6401e-61.8156e-69.0472e-81.0622e-838.665
MAIM GUHHZ8.5721e-79.7338e-85.5601e-83.2720e-81.7729e-81.2791e-62.5542e-72.3450e-82.6479e-942.9141
MAIM GUHHN1.1617e-61.6772e-78.9315e-83.8933e-81.9997e-82.3721e-64.4000e-72.7688e-83.7351e-942.9141
MAIM GUHHE1.3138e-61.9182e-78.3376e-84.7435e-82.5890e-82.8235e-63.9635e-72.7879e-83.8159e-942.9141
MSSA IVHHZ4.5049e-71.0628e-74.6308e-85.7986e-81.1636e-71.5482e-61.8372e-72.4079e-72.6184e-853.3284
MSSA IVHHN5.8393e-71.1318e-75.6421e-82.6893e-83.2020e-81.4703e-62.1131e-76.0456e-83.3642e-953.3284
MSSA IVHHE6.1435e-71.0861e-77.3240e-83.3371e-82.6012e-81.0869e-64.1054e-74.1896e-83.4771e-953.3284
PII IVHHZ6.4390e-78.8803e-87.0848e-82.0577e-81.1101e-81.4981e-63.1500e-71.6225e-82.1782e-961.9151
PII IVHHN7.3656e-71.0431e-78.2419e-82.3384e-81.0835e-81.4305e-62.8633e-71.7732e-82.7876e-961.9151
PII IVHHE6.4079e-71.2256e-78.7454e-82.3611e-81.1780e-82.3059e-64.7429e-71.7817e-82.6766e-961.9151
*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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