MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.6
2025-09-02 15:53:35 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-03 08:38:47

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Earthquake info - Manual location
Event - ID :250902155204
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2025-09-02 15:53:35.279 (UTC)
Location : Latitude: 46.208 N, Longitude: 7.845 E
Area :Alpi Pennine
Depth (km) :6.90
Distances (km) : 26.4 --- Antrona Schieranco
28.3 --- Macugnaga
28.4 --- Trasquera
28.7 --- Bognanco
31.2 --- Varzo
31.4 --- Ceppo Morelli
31.9 --- Viganella
32.6 --- Vanzone con San Carlo
33.1 --- Seppiana
33.6 --- Calasca-Castiglione
33.7 --- Montescheno
33.9 --- Bannio Anzino
35.7 --- Villadossola
35.8 --- Crevoladossola
35.9 --- Domodossola
36.6 --- Pallanzeno
36.6 --- Carcoforo
36.9 --- Crodo
36.9 --- Baceno
37.4 --- Montecrestese

Quality location estimate: Erh: 0.8 km, Erz: 0.9 km, Nf: 28, Gap: 53 °, Rms: 0.28


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.
EMBDCH2025-09-02 15:53:37.1600.00400.011.712025-09-02 15:53:37.6210.0400-0.780.598.2
VANNICH2025-09-02 15:53:39.7200.01100.240.412025-09-02 15:53:42.2800.0691-0.031.6120.8
MMKCH2025-09-02 15:53:40.0950.01000.530.202025-09-02 15:53:42.4100.0601-0.071.6021.7
LAUCHCH2025-09-02 15:53:40.4400.0150-0.001.742025-09-02 15:53:43.1290.0782-0.840.5125.4
FIESACH2025-09-02 15:53:41.6990.0200-0.211.172025-09-02 15:53:45.8440.0400-0.630.5933.8
DIXCH2025-09-02 15:53:42.5450.02000.021.592025-09-02 15:53:46.7250.1504-0.710.5837.9
SATIGU2025-09-02 15:53:42.2900.0190-0.261.022025-09-02 15:53:46.8550.1163-0.710.5938.3
SENINCH2025-09-02 15:53:44.0000.0200-0.081.582025-09-02 15:53:49.5300.2166-0.620.6746.2
REMYGU2025-09-02 15:53:47.2650.0200-0.300.952025-09-02 15:53:55.8910.0400-0.231.1567.8
FUSIOCH2025-09-02 15:53:47.5710.0200-0.031.522025-09-02 15:53:56.6970.04000.550.2969.0
CIROGU2025-09-02 15:53:47.9000.0984-0.231.172025-09-02 15:53:57.1450.25060.061.0071.3
MRGEIV2025-09-02 15:53:49.4880.02000.350.462025-09-02 15:53:58.4730.0400-0.410.8978.1
MUGIOCH2025-09-02 15:53:52.6270.02000.170.972025-09-02 15:54:04.0090.0400-0.670.6397.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
EMBD CHHH0.403.22e-18.2315
MMK CHHH0.921.02e-121.7152
LAUCHCHHH0.708.56e-225.4346
FIESACHHH0.442.75e-233.839
DIX CHHH0.764.56e-237.9248
SATI GUHH0.742.45e-238.3177
SENINCHHH0.541.87e-246.2293
REMY GUHH0.791.48e-267.8232
FUSIOCHHH0.233.95e-369.066
CIRO GUHH0.675.49e-371.3198
MRGE IVHH0.605.92e-378.1231


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.
(°)
EMBD CHHHZ5.5208e-55.4854e-62.0556e-67.4060e-74.0893e-74.9517e-59.7608e-66.2934e-71.2077e-78.2315
EMBD CHHHN7.0454e-57.2559e-61.8394e-67.8048e-73.7189e-74.1160e-58.8817e-66.7170e-71.2847e-78.2315
EMBD CHHHE8.5024e-56.9980e-61.6445e-66.4806e-74.3751e-75.4332e-57.4929e-68.0676e-71.5284e-78.2315
VANNICHHHZ5.2753e-64.9714e-71.4094e-75.2755e-82.6344e-82.9251e-68.0899e-73.7341e-87.4876e-920.8271
VANNICHHHN2.9989e-62.9702e-71.5694e-78.3711e-83.0631e-85.2703e-61.2257e-63.9455e-87.3350e-920.8271
VANNICHHHE5.1689e-64.2816e-71.8179e-76.8588e-83.5313e-86.7946e-66.9291e-75.4456e-89.1343e-920.8271
MMK CHHHZ9.5341e-69.5384e-73.6436e-71.0094e-75.6203e-81.4537e-51.2175e-61.0800e-72.3602e-821.7152
MMK CHHHN2.7799e-53.0163e-67.2517e-71.8688e-71.1872e-74.2892e-52.8334e-62.0860e-76.0624e-821.7152
MMK CHHHE2.3787e-51.7963e-64.8640e-71.4098e-78.6829e-82.7100e-51.9255e-61.5907e-73.9461e-821.7152
LAUCHCHHHZ4.0443e-66.0057e-72.2654e-78.4493e-83.4511e-81.1019e-56.7975e-75.1787e-81.3265e-825.4346
LAUCHCHHHN6.6941e-61.0102e-63.0972e-71.0648e-76.1343e-81.3160e-58.6336e-71.0573e-72.0685e-825.4346
LAUCHCHHHE7.0217e-61.5634e-68.3857e-71.7640e-79.5202e-82.4182e-53.1699e-61.6183e-73.6203e-825.4346
FIESACHHHZ7.7267e-66.5908e-72.2260e-71.0995e-75.4652e-81.4254e-56.9438e-78.5532e-81.2621e-833.839
FIESACHHHN5.5205e-65.1188e-72.4197e-78.4920e-85.0521e-86.8477e-68.2079e-78.3819e-81.0637e-833.839
FIESACHHHE6.4967e-66.2744e-72.1499e-79.0506e-85.5595e-81.2003e-51.0662e-67.0312e-81.4422e-833.839
DIX CHHHZ1.1134e-51.0780e-63.1907e-78.3062e-84.4241e-81.0826e-51.2082e-68.0833e-82.1951e-837.9248
DIX CHHHN7.8889e-69.5150e-74.3993e-71.5668e-77.2204e-81.5588e-51.1337e-61.1023e-72.2284e-837.9248
DIX CHHHE6.8878e-68.3899e-73.1029e-79.8641e-84.5140e-88.2585e-61.3102e-67.4472e-81.8322e-837.9248
SATI GUHHZ3.6728e-63.6679e-71.1522e-73.5815e-81.9738e-86.5620e-65.2368e-72.9865e-87.2369e-938.3177
SATI GUHHN5.6479e-65.5140e-71.3620e-74.3787e-82.2954e-87.7758e-67.3783e-74.3843e-81.0279e-838.3177
SATI GUHHE6.5500e-66.3162e-71.7227e-75.8378e-82.5898e-81.2856e-56.7586e-75.4689e-81.2638e-838.3177
SENINCHHHZ3.6690e-65.2182e-72.1796e-75.9765e-83.2487e-81.3946e-51.1057e-66.2597e-81.1961e-846.2293
SENINCHHHN2.0873e-63.6251e-72.1001e-76.6360e-83.0771e-85.8047e-61.0523e-64.6236e-88.7465e-946.2293
SENINCHHHE2.1370e-62.6242e-71.4859e-76.2273e-83.3851e-88.8931e-64.2496e-74.0862e-86.2338e-946.2293
REMY GUHHZ1.4965e-61.6357e-77.1865e-82.3138e-81.3474e-82.0485e-63.0564e-71.9798e-82.7436e-967.8232
REMY GUHHN1.4572e-62.0640e-71.2155e-74.2532e-81.9480e-84.4269e-65.7248e-73.2389e-85.4246e-967.8232
REMY GUHHE9.9431e-71.8667e-71.2819e-75.7397e-82.5258e-84.4206e-64.7058e-74.0337e-84.4566e-967.8232
FUSIOCHHHZ5.0336e-75.9226e-83.2048e-81.2463e-86.7399e-91.0192e-61.1858e-71.1328e-81.3704e-969.066
FUSIOCHHHN7.1033e-78.5831e-84.2080e-81.3826e-87.8742e-92.2687e-62.1584e-71.3028e-81.9311e-969.066
FUSIOCHHHE5.0161e-75.5225e-83.7033e-81.7282e-86.7952e-99.2293e-72.3243e-71.0642e-81.3783e-969.066
CIRO GUHHZ1.0269e-69.8156e-83.8171e-81.0852e-86.6475e-91.9041e-61.6810e-71.2828e-82.1847e-971.3198
CIRO GUHHN1.3469e-61.5954e-73.8954e-81.3481e-87.8266e-91.6119e-61.7299e-71.1445e-83.2629e-971.3198
CIRO GUHHE1.4529e-61.4069e-73.8784e-81.1346e-87.2435e-91.5404e-61.8523e-71.2306e-82.7214e-971.3198
MRGE IVHHZ9.5265e-78.4380e-83.6774e-81.7268e-88.2208e-98.4786e-72.1057e-71.3493e-81.7406e-978.1231
MRGE IVHHN1.9298e-61.4746e-75.0877e-82.3804e-81.3577e-81.9600e-62.8047e-71.9781e-82.7912e-978.1231
MRGE IVHHE1.1679e-61.0342e-74.4897e-82.2738e-81.1229e-81.5192e-62.5228e-72.0085e-82.3053e-978.1231
MUGIOCHHHZ6.8818e-77.5964e-84.2594e-81.7608e-81.2021e-81.1660e-62.0385e-71.8858e-82.0433e-997.9109
MUGIOCHHHN1.0593e-61.2962e-77.8993e-83.7246e-82.0391e-82.3279e-65.2460e-72.4394e-83.1131e-997.9109
MUGIOCHHHE4.7708e-76.7670e-85.0350e-82.4331e-81.1842e-81.1202e-63.2729e-71.4486e-81.6090e-997.9109
*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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