MANUAL Location - Area: Alpi Graie , magnitude (ML): 0.5
2026-04-17 22:35:04 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-04-20 07:02:55

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Earthquake info - Manual location
Event - ID :260417223439
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2026-04-17 22:35:04.07 (UTC)
Location : Latitude: 45.453 N, Longitude: 7.541 E
Area :Alpi Graie
Depth (km) :3.85
Distances (km) : 2.9 --- Ingria
3.7 --- Ribordone
4.1 --- Sparone
5.5 --- Frassinetto
5.6 --- Ronco Canavese
5.6 --- Alpette
5.7 --- Pont-Canavese
7.3 --- Locana
7.8 --- Valprato Soana
9.6 --- Canischio
9.8 --- San Colombano Belmonte
9.9 --- Chiesanuova
10.8 --- Cuorgne
10.8 --- Borgiallo
11.1 --- Prascorsano
11.4 --- Colleretto Castelnuovo
11.9 --- Cintano
11.9 --- Pratiglione
12.2 --- Castelnuovo Nigra
12.4 --- Forno Canavese

Quality location estimate: Erh: 0.9 km, Erz: 1 km, Nf: 24, Gap: 101 °, Rms: 0.27


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.
CANIGU2026-04-17 22:35:07.4230.02000.420.302026-04-17 22:35:08.8930.04000.011.9512.8
CIROGU2026-04-17 22:35:08.2300.0140-0.021.992026-04-17 22:35:10.1240.6349-0.870.5117.8
LATOIV2026-04-17 22:35:08.2340.02000.012.022026-04-17 22:35:10.2200.0400-0.670.7318.5
LSDGU2026-04-17 22:35:10.7600.01700.041.792026-04-17 22:35:14.6100.1033-0.420.8832.3
RSPGU2026-04-17 22:35:11.9100.0211-0.071.582026-04-17 22:35:16.7000.1273-0.610.8040.5
MRGEIV2026-04-17 22:35:13.9660.02000.031.652026-04-17 22:35:20.1640.0400-0.201.1351.6
SATIGU2026-04-17 22:35:14.2290.0200-0.440.842026-04-17 22:35:21.9780.04000.190.9553.8
MMKCH2026-04-17 22:35:17.6100.02000.031.472026-04-17 22:35:26.3820.0400-0.321.0474.5
EMBDCH2026-04-17 22:35:20.7450.02001.010.102026-04-17 22:35:29.8990.0400-0.520.8787.9
SIMPLCH2026-04-17 22:35:21.3190.10040.300.692026-04-17 22:35:32.3250.0400-0.311.0695.1


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
CANI GUHH0.321.24e-112.899
CIRO GUHH0.192.69e-217.87
LSD GUHH0.402.72e-232.3271
RSP GUHH0.421.96e-240.5212
MRGE IVHH0.701.84e-251.6314
SATI GUHH0.791.39e-253.828
MMK CHHH0.786.42e-374.526
EMBD CHHH0.332.88e-387.915
SIMPLCHHH0.422.99e-395.123


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.
(°)
CANI GUHHZ1.6849e-51.6970e-65.5505e-71.4169e-77.6215e-82.4328e-52.6968e-61.2908e-73.1974e-812.899
CANI GUHHN2.4724e-53.1761e-67.6576e-72.5503e-71.5964e-74.3740e-52.5739e-62.8716e-76.0205e-812.899
CANI GUHHE1.7613e-51.9798e-65.1572e-72.0044e-71.2814e-71.7558e-52.9540e-62.3494e-74.4819e-812.899
CIRO GUHHZ8.8474e-69.7783e-72.4790e-78.7203e-85.2959e-81.1993e-51.0151e-69.4029e-81.8543e-817.87
CIRO GUHHN6.5283e-66.6528e-71.6363e-74.4640e-82.9332e-85.0605e-66.1137e-76.3357e-81.2530e-817.87
CIRO GUHHE7.2858e-66.9432e-71.9309e-76.7980e-83.9981e-88.7760e-68.6776e-76.6975e-81.1724e-817.87
LSD GUHHZ3.1505e-64.2053e-71.4510e-74.2449e-82.1022e-89.0868e-64.2027e-73.5490e-87.7500e-932.3271
LSD GUHHN7.3652e-67.0172e-71.8533e-75.7678e-82.9482e-81.3180e-56.9668e-75.9796e-81.3649e-832.3271
LSD GUHHE4.0981e-64.0847e-71.6538e-75.3073e-82.0576e-86.7439e-66.3521e-73.6998e-88.4726e-932.3271
RSP GUHHZ2.3439e-63.7826e-71.2886e-73.3008e-81.8749e-85.3790e-63.9078e-73.2293e-87.8000e-940.5212
RSP GUHHN2.4110e-63.5795e-72.1945e-76.0883e-82.7874e-85.6659e-68.7520e-74.2989e-87.9024e-940.5212
RSP GUHHE2.1668e-63.6601e-72.0248e-76.6430e-82.5237e-85.6584e-67.9191e-74.0308e-87.6946e-940.5212
MRGE IVHHZ2.8375e-63.6180e-79.2776e-82.6836e-81.6074e-82.2116e-65.7407e-72.8520e-86.6376e-951.6314
MRGE IVHHN6.0457e-65.6139e-71.1775e-74.7150e-82.2308e-85.3723e-65.4949e-74.9906e-81.2813e-851.6314
MRGE IVHHE3.3711e-63.2206e-79.1142e-82.8376e-81.3575e-84.0425e-63.8349e-72.4079e-86.9901e-951.6314
SATI GUHHZ2.3037e-61.9470e-76.1371e-82.5159e-81.2184e-83.0154e-62.8306e-72.0836e-83.5424e-953.828
SATI GUHHN2.3649e-63.0273e-77.5410e-82.5509e-81.3316e-84.5592e-62.9616e-72.3308e-85.3672e-953.828
SATI GUHHE3.3074e-63.8305e-71.0599e-72.9295e-81.6879e-87.1310e-64.6863e-72.9844e-87.5363e-953.828
MMK CHHHZ8.3343e-79.6147e-85.3978e-81.8958e-81.0465e-81.5399e-63.2061e-71.5556e-82.2667e-974.526
MMK CHHHN1.1472e-61.3549e-76.2328e-82.1957e-81.0126e-82.1064e-63.0124e-71.5576e-83.0728e-974.526
MMK CHHHE1.4326e-61.4094e-74.5662e-81.5017e-88.2861e-91.6802e-61.8463e-71.2842e-82.9245e-974.526
EMBD CHHHZ3.7505e-75.4665e-83.3686e-81.3897e-86.7056e-98.6468e-72.3461e-79.3023e-91.1762e-987.915
EMBD CHHHN4.1114e-74.7840e-82.8332e-81.1308e-86.1970e-99.5238e-71.6029e-77.5316e-91.1074e-987.915
EMBD CHHHE4.3695e-74.7034e-83.0333e-81.1930e-85.4219e-97.7988e-71.0315e-77.1253e-91.0884e-987.915
SIMPLCHHHZ4.9783e-75.1580e-82.9135e-81.1402e-86.8791e-97.6725e-71.3880e-78.4915e-91.2600e-995.123
SIMPLCHHHN3.4050e-74.4197e-82.6716e-81.4039e-85.7086e-97.2470e-71.2225e-78.1269e-91.0717e-995.123
SIMPLCHHHE4.1416e-75.6554e-82.6828e-81.1200e-85.3789e-98.3207e-71.3978e-77.3993e-91.1139e-995.123
*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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