MANUAL Location - Area: Alpi Marittime , magnitude (ML): -0.2
2026-09-15 04:18:13 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-15 06:53:16

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Earthquake info - Manual location
Event - ID :260915041715
Magnitude (ML) :-0.2 +/- 0.2
Origin Time :2026-09-15 04:18:13.083 (UTC)
Location : Latitude: 44.060 N, Longitude: 7.402 E
Area :Alpi Marittime
Depth (km) :11.02
Distances (km) : 20.2 --- Entracque
21.0 --- Limone Piemonte
21.9 --- Olivetta San Michele
23.1 --- Vernante
23.9 --- Roaschia
24.1 --- Airole
24.4 --- Valdieri
24.4 --- Rocchetta Nervina
25.1 --- Pigna
26.1 --- Castel Vittorio
27.5 --- Isolabona
27.7 --- Robilante
27.8 --- Briga Alta
28.4 --- Apricale
29.0 --- Dolceacqua
29.1 --- Moiola
29.1 --- Roccavione
29.8 --- Demonte
30.0 --- Perinaldo
30.0 --- Triora

Quality location estimate: Erh: 0.7 km, Erz: 0.7 km, Nf: 22, Gap: 68 °, Rms: 0.49


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.
TURFFR2026-09-15 04:18:16.3100.0200-0.011.432026-09-15 04:18:17.9730.0400-0.731.3614.5
SAOFFR2026-09-15 04:18:17.0840.02000.011.392026-09-15 04:18:19.1500.0400-0.811.0118.6
ENRGU2026-09-15 04:18:17.4030.02000.021.362026-09-15 04:18:20.0700.0400-0.300.8722.5
STVGU2026-09-15 04:18:17.2160.0200-0.621.112026-09-15 04:18:20.2980.0400-0.820.9524.6
MLIGIV2026-09-15 04:18:18.0090.0200-0.711.412026-09-15 04:18:21.1770.0400-1.540.1026.3
ESCAFR2026-09-15 04:18:18.4230.1256-0.151.152026-09-15 04:18:21.9500.2356-0.531.0028.0
MVIFFR2026-09-15 04:18:18.7010.0200-0.210.942026-09-15 04:18:22.1170.0400-1.090.1129.1
ISOFR2026-09-15 04:18:19.2820.0200-0.051.292026-09-15 04:18:23.0900.2466-0.610.9733.5
MGROGU2026-09-15 04:18:19.3770.0200-0.661.332026-09-15 04:18:23.2290.0400-1.710.0934.9
GBOSGU2026-09-15 04:18:20.9300.02610.031.172026-09-15 04:18:25.8400.0400-0.310.9042.0
IMIGU2026-09-15 04:18:20.9830.0200-0.260.942026-09-15 04:18:26.3530.0400-0.651.1244.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
TURF FRHH-0.093.83e-214.5185
SAOF FRHH-0.411.17e-218.6123
ENR GUHH0.154.15e-222.54
STV GUHH-0.158.64e-324.6344
ESCA FRHH-0.336.63e-328.0185
ISO FRHH-0.058.89e-333.5296
MGRO GUHH-0.552.60e-334.993


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.
(°)
TURF FRHHZ4.9496e-64.9254e-71.3896e-73.9061e-81.9131e-86.5051e-64.8965e-73.3266e-86.9388e-914.5185
TURF FRHHN6.8841e-69.6063e-72.4996e-79.9570e-85.5936e-89.0474e-61.1067e-61.0338e-72.1141e-814.5185
TURF FRHHE3.8753e-65.3173e-72.2477e-76.7320e-83.7182e-88.8212e-61.2059e-65.8894e-81.1295e-814.5185
SAOF FRHHZ1.1965e-61.8260e-71.4976e-77.3262e-82.9569e-82.3320e-67.7508e-74.1754e-85.4432e-918.6123
SAOF FRHHN1.3516e-61.6540e-77.7224e-82.8880e-81.1850e-81.7902e-64.6106e-71.7108e-83.5151e-918.6123
SAOF FRHHE1.4418e-61.6294e-79.4859e-83.4865e-81.7283e-81.7159e-64.7361e-72.4530e-83.5287e-918.6123
ENR GUHHZ3.4370e-63.7979e-71.9154e-75.8670e-82.8956e-86.0557e-61.0938e-64.5953e-89.7552e-922.54
ENR GUHHN1.1310e-51.1342e-62.5651e-75.7860e-83.4725e-81.2552e-58.7545e-77.3758e-82.1299e-822.54
ENR GUHHE1.3422e-58.9917e-72.4413e-78.3518e-85.2605e-86.5436e-61.2566e-68.8004e-81.8242e-822.54
STV GUHHZ1.2625e-61.2154e-73.8396e-81.1954e-87.0336e-91.3753e-61.5790e-71.1814e-82.5596e-924.6344
STV GUHHN1.7388e-62.0688e-76.1745e-81.8246e-81.0111e-81.9922e-62.3546e-71.9577e-84.2857e-924.6344
STV GUHHE3.4523e-62.7746e-75.9142e-81.5769e-88.8589e-92.6600e-62.7426e-71.7209e-85.6908e-924.6344
ESCA FRHHZ9.5028e-71.1126e-74.4223e-81.5571e-87.9031e-91.9602e-62.5378e-71.3795e-82.3454e-928.0185
ESCA FRHHN1.3356e-61.3769e-75.4541e-81.6949e-88.5017e-92.2915e-62.7018e-71.3430e-82.4312e-928.0185
ESCA FRHHE1.1419e-61.1624e-75.5481e-81.9189e-89.2067e-91.3860e-63.0381e-71.5810e-82.7764e-928.0185
ISO FRHHZ1.8107e-61.7595e-74.1266e-87.7483e-94.7720e-91.0610e-61.5384e-78.5317e-91.9635e-933.5296
ISO FRHHN1.2189e-61.7003e-76.4847e-81.9913e-81.3057e-83.4285e-62.8880e-72.1700e-83.5870e-933.5296
ISO FRHHE9.3209e-79.0629e-83.2710e-89.0123e-94.9057e-91.6516e-69.4541e-88.7879e-91.6505e-933.5296
MGRO GUHHZ6.7734e-76.4717e-81.9946e-81.0617e-85.8572e-95.6524e-71.1823e-78.2856e-97.5375e-1034.993
MGRO GUHHN4.1498e-74.7896e-82.5496e-81.1205e-86.6837e-97.9663e-71.3218e-79.9827e-99.6261e-1034.993
MGRO GUHHE4.6505e-74.8403e-82.4111e-81.1322e-87.5810e-99.6036e-79.3115e-81.2250e-81.0714e-934.993
GBOS GUHHZ3.6940e-65.0981e-77.2121e-82.2425e-81.1984e-83.6264e-63.1884e-72.3349e-84.2365e-942.060
GBOS GUHHN2.9546e-62.7096e-77.9421e-83.1704e-81.7227e-82.7377e-62.6966e-72.6077e-83.4600e-942.060
GBOS GUHHE4.4912e-66.1513e-76.7276e-82.1308e-81.2329e-82.2958e-63.1133e-71.9435e-83.0866e-942.060
IMI GUHHZ9.7117e-71.2171e-74.6039e-81.5986e-89.4555e-91.4020e-61.6682e-71.6578e-82.8373e-944.2113
IMI GUHHN1.5684e-62.5140e-78.3043e-82.9295e-81.8657e-83.0295e-63.7174e-73.4050e-85.3319e-944.2113
IMI GUHHE1.4287e-61.8437e-76.5084e-81.7540e-88.8504e-92.1675e-62.0062e-71.4879e-83.6159e-944.2113
*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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