MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.6
2026-04-17 21:23:39 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-04-20 07:00:46

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Earthquake info - Manual location
Event - ID :260417212250
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2026-04-17 21:23:39.62 (UTC)
Location : Latitude: 44.620 N, Longitude: 7.206 E
Area :Alpi Cozie
Depth (km) :10.30
Distances (km) : 4.7 --- Sampeyre
6.5 --- Oncino
7.5 --- Frassino
8.3 --- Ostana
9.1 --- Paesana
9.3 --- Sanfront
9.7 --- Crissolo
10.9 --- Melle
11.2 --- Gambasca
11.3 --- Casteldelfino
11.8 --- Rifreddo
12.5 --- Martiniana Po
12.8 --- Elva
13.4 --- Brossasco
13.4 --- Macra
13.8 --- Valmala
14.1 --- Stroppo
14.1 --- Pontechianale
14.2 --- Isasca
14.9 --- Envie

Quality location estimate: Erh: 0.9 km, Erz: 1.9 km, Nf: 34, Gap: 89 °, 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.
PZZGU2026-04-17 21:23:43.4500.01100.241.112026-04-17 21:23:45.2430.2386-0.520.8318.6
PONCIV2026-04-17 21:23:43.4290.02000.231.172026-04-17 21:23:45.7690.04000.031.7118.8
BHBGU2026-04-17 21:23:44.5970.01500.011.772026-04-17 21:23:47.5880.1424-0.370.9826.6
VINDIV2026-04-17 21:23:46.1190.0200-0.081.472026-04-17 21:23:50.4200.0400-0.400.9436.1
SURFFR2026-04-17 21:23:46.4900.0190-0.051.612026-04-17 21:23:50.8700.1123-0.730.5336.3
STVGU2026-04-17 21:23:47.5550.02000.131.462026-04-17 21:23:52.5300.1394-0.341.0444.2
ENRGU2026-04-17 21:23:47.6500.0241-0.370.942026-04-17 21:23:53.6000.1414-0.291.1148.0
FENEIV2026-04-17 21:23:48.4500.0200-0.041.622026-04-17 21:23:53.5670.0400-1.020.3148.3
RRLGU2026-04-17 21:23:48.4300.02510.021.692026-04-17 21:23:54.1090.1474-0.490.8648.5
ISOFR2026-04-17 21:23:49.3040.02000.480.322026-04-17 21:23:55.3100.04000.151.3951.3
CMAGIV2026-04-17 21:23:49.4900.02000.031.662026-04-17 21:23:56.2980.04000.091.4755.2
RSPGU2026-04-17 21:23:50.3170.05520.241.172026-04-17 21:23:56.4600.2997-1.000.4260.0
TURFFR2026-04-17 21:23:52.9980.02000.281.042026-04-17 21:24:01.3730.0400-0.720.6073.9
MVIFFR2026-04-17 21:23:55.1020.02001.040.012026-04-17 21:24:04.5500.24360.041.1781.2
ROROGU2026-04-17 21:23:54.2900.0452-0.360.992026-04-17 21:24:04.0000.2647-1.260.2689.3
LSDGU2026-04-17 21:23:56.1400.02000.510.402026-04-17 21:24:06.6460.0400-0.211.2094.3
IMIGU2026-04-17 21:23:54.7700.3369-1.190.302026-04-17 21:24:06.7000.4559-1.060.4496.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.431.38e-118.6210
PONC IVHH0.852.08e-118.8273
BHB GUHH0.262.56e-226.611
STV GUHH0.551.42e-244.2167
ENR GUHH0.986.49e-248.0159
FENE IVHH0.351.10e-248.3346
RRL GUHH0.469.56e-348.5316
CMAG IVHH0.852.62e-255.2100
RSP GUHH0.306.76e-360.05
RORO GUHH0.595.08e-389.3129
LSD GUHH0.614.64e-394.3357
IMI GUHH0.545.09e-396.6145


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.
(°)
PZZ GUHHZ1.6301e-51.7265e-61.1617e-62.7152e-71.4434e-72.8081e-57.7551e-62.3428e-74.3324e-818.6210
PZZ GUHHN1.6627e-51.9381e-69.0116e-72.4734e-71.1929e-73.8835e-53.5494e-61.9292e-74.0985e-818.6210
PZZ GUHHE1.4095e-51.8299e-61.1982e-63.3839e-71.7383e-71.9394e-56.8067e-62.6778e-74.5752e-818.6210
PONC IVHHZ3.8217e-53.4396e-64.6459e-71.6163e-71.0838e-72.7201e-52.0573e-62.0802e-76.5053e-818.8273
PONC IVHHN4.4935e-56.4460e-61.2940e-64.1049e-72.4583e-78.0695e-55.4764e-65.2524e-71.3048e-718.8273
PONC IVHHE2.0826e-52.2478e-65.6142e-72.1770e-71.3567e-72.1281e-52.9731e-62.6320e-75.0727e-818.8273
BHB GUHHZ4.8665e-65.2920e-71.5888e-74.1559e-82.7252e-88.9793e-65.3614e-75.4369e-81.0661e-826.611
BHB GUHHN4.1321e-64.3825e-71.2445e-73.9145e-82.6120e-85.8260e-64.8079e-75.2161e-87.9920e-926.611
BHB GUHHE5.1033e-66.9577e-71.5757e-75.4026e-83.0758e-81.1381e-55.1772e-76.6526e-81.4503e-826.611
STV GUHHZ1.9438e-61.9681e-71.1099e-72.6094e-81.4611e-85.9421e-64.4261e-72.2960e-84.4722e-944.2167
STV GUHHN1.5861e-62.2241e-78.4827e-82.0539e-81.1310e-85.1006e-63.2203e-71.8603e-84.5091e-944.2167
STV GUHHE2.3604e-62.6375e-71.3490e-73.3165e-81.7594e-84.7969e-67.1077e-72.6436e-85.7419e-944.2167
ENR GUHHZ7.3776e-66.1871e-72.2289e-75.8273e-82.6484e-81.0157e-51.1177e-64.4207e-81.1933e-848.0159
ENR GUHHN1.5768e-51.5919e-63.4768e-79.6039e-85.8361e-81.9487e-51.2377e-61.2765e-73.4341e-848.0159
ENR GUHHE2.2282e-52.0836e-64.4551e-71.2320e-77.0932e-82.6739e-51.6300e-61.3501e-74.0431e-848.0159
FENE IVHHZ2.6241e-63.0458e-71.2224e-74.4418e-82.4954e-83.9506e-66.4525e-73.8878e-85.7724e-948.3346
FENE IVHHN2.2855e-62.6200e-79.2726e-82.4560e-81.1610e-82.7814e-63.7220e-72.1515e-84.9964e-948.3346
FENE IVHHE2.0075e-62.0351e-71.0199e-73.5623e-81.6884e-83.2666e-64.8998e-72.3632e-84.0463e-948.3346
RRL GUHHZ9.5952e-71.1473e-75.0529e-82.6771e-81.3660e-81.7607e-62.1608e-71.7001e-82.6839e-948.5316
RRL GUHHN9.2746e-71.8318e-78.7652e-82.2639e-81.3309e-83.8711e-63.3960e-71.9601e-83.8546e-948.5316
RRL GUHHE8.8878e-71.3206e-77.7140e-82.7069e-81.3671e-82.9394e-62.6031e-71.6354e-83.1271e-948.5316
ISO FRHHZ6.7399e-79.1284e-84.0236e-81.2543e-85.5547e-91.9521e-61.6509e-78.2148e-92.0278e-951.3194
ISO FRHHN6.8605e-78.0821e-82.7576e-88.7572e-94.7409e-91.5507e-61.0855e-77.6175e-91.7259e-951.3194
ISO FRHHE8.2094e-71.2348e-74.5604e-81.5879e-88.9324e-92.0928e-61.2595e-71.3241e-82.2528e-951.3194
CMAG IVHHZ2.4043e-62.4265e-71.6028e-76.2612e-82.9234e-83.0159e-61.1400e-64.2044e-87.4282e-955.2100
CMAG IVHHN1.8896e-64.1490e-72.4191e-71.1830e-78.4651e-85.6096e-61.6107e-61.2274e-71.2804e-855.2100
CMAG IVHHE1.4848e-62.6338e-72.0855e-77.5641e-83.3514e-84.5171e-61.2934e-64.4018e-87.5420e-955.2100
RSP GUHHZ9.2336e-71.0920e-73.3605e-81.1484e-87.6259e-91.3182e-61.6113e-71.2203e-81.9622e-960.05
RSP GUHHN1.0716e-61.3155e-76.5365e-82.1322e-81.3217e-82.1805e-62.5758e-71.8588e-84.8133e-960.05
RSP GUHHE1.2357e-61.4478e-76.0369e-81.6882e-89.9830e-93.1881e-62.5479e-71.4944e-82.8932e-960.05
TURF FRHHZ1.1518e-71.8964e-81.3612e-84.0151e-92.8617e-94.8147e-78.8343e-85.1623e-94.5815e-1073.9168
TURF FRHHN1.5334e-73.0333e-81.6308e-86.1693e-93.6287e-94.9900e-78.7624e-84.5072e-98.1638e-1073.9168
TURF FRHHE1.1767e-71.8840e-81.7330e-87.0672e-93.4579e-94.2185e-71.1076e-74.9353e-96.0110e-1073.9168
RORO GUHHZ4.0419e-76.7424e-82.3951e-87.4577e-94.6965e-99.5908e-71.0524e-77.1070e-91.1406e-989.3129
RORO GUHHN4.7327e-77.4555e-84.2213e-81.2605e-89.9521e-91.0063e-61.5096e-71.5043e-81.9737e-989.3129
RORO GUHHE4.9422e-76.9871e-84.3492e-81.3248e-87.2013e-91.0989e-61.5882e-71.2884e-81.9110e-989.3129
LSD GUHHZ5.1448e-76.2468e-83.3837e-81.0013e-85.6154e-91.2212e-61.2083e-78.9691e-91.6050e-994.3357
LSD GUHHN5.8654e-76.5452e-83.6822e-88.9034e-94.7158e-91.3272e-62.0850e-77.8072e-91.3347e-994.3357
LSD GUHHE6.7508e-78.8972e-84.7721e-81.4177e-86.6421e-91.2736e-62.8775e-71.1168e-82.1254e-994.3357
IMI GUHHZ3.6584e-74.4925e-83.0357e-81.4924e-88.1339e-97.8748e-71.2697e-71.1235e-81.2870e-996.6145
IMI GUHHN6.1459e-77.0960e-84.1032e-81.8940e-81.2392e-81.4387e-61.7714e-71.6838e-81.6604e-996.6145
IMI GUHHE4.2862e-75.2274e-82.9528e-81.4138e-89.0658e-91.0318e-61.3644e-71.1869e-81.5423e-996.6145
*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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