AUTOMATIC Location - Area: Alpi Graie , magnitude (ML): 1.8
2025-12-08 19:40:09 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-08 19:44:43

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Earthquake info - RsniPicker2 automatic location
Event - ID :251208193945
Magnitude (ML) :1.8 +/- 0.3
Origin Time :2025-12-08 19:40:09.74 (UTC)
Location : Latitude: 45.235 N, Longitude: 7.008 E
Area :Alpi Graie
Depth (km) :4.27
Distances (km) : 3.7 --- Moncenisio (TO)
4.9 --- Novalesa (TO)
8.4 --- Venaus (TO)
9.8 --- Mompantero (TO)
10.6 --- Giaglione (TO)
11.3 --- Susa (TO)
12.3 --- Gravere (TO)
12.8 --- Chiomonte (TO)
13.4 --- Meana di Susa (TO)
15.3 --- Bussoleno (TO)
15.5 --- Mattie (TO)
15.8 --- Chianocco (TO)
16.3 --- Exilles (TO)
16.7 --- Usseglio (TO)
17.9 --- San Giorio di Susa (TO)
17.9 --- Bruzolo (TO)
18.1 --- Balme (TO)
19.7 --- San Didero (TO)
20.3 --- Salbertrand (TO)
20.7 --- Usseaux (TO)

Quality location estimate:
Erh: 0.6 km, Erz: 0.8 km, Nf: 29, Gap: 66°, Rms: 0.217 s
Stazioni validate: 16


RsniPicker2 - Automatic location results
Station Net P arrival times P pick
err		 P pick
weight		 P res Nll
weight		 S arrival time S pick
err		 S pick
weight		 S res Nll
weight		 Dist.
RSPGU2025-12-08 19:40:14.5400.0120-0.011.852025-12-08 19:40:17.5820.1502-0.211.3022.8
OGMOFR2025-12-08 19:40:14.9000.01300.021.812025-12-08 19:40:17.9590.0771-0.350.8625.9
LSDGU2025-12-08 19:40:15.4100.01400.121.182025-12-08 19:40:18.7990.0821-0.201.3027.2
RRLGU--:---.-----.---.--2025-12-08 19:40:21.9500.2802-0.630.6139.0
BHBGU2025-12-08 19:40:18.8600.02500.001.73--:---.-----.---.-- 48.9
RSLFR2025-12-08 19:40:20.6600.02900.051.522025-12-08 19:40:27.5000.2192-0.350.9858.8
MRGEIV2025-12-08 19:40:20.8500.0300-0.111.582025-12-08 19:40:27.8480.3392-0.560.7259.8
CIROGU2025-12-08 19:40:20.7990.0300-0.760.362025-12-08 19:40:28.3430.3962-1.050.3460.0
OGAGFR2025-12-08 19:40:21.1700.0310-0.051.652025-12-08 19:40:29.1290.1902-0.141.2162.2
REMYGU2025-12-08 19:40:22.3200.0340-0.181.372025-12-08 19:40:30.1100.4282-1.000.3968.2
PZZGU2025-12-08 19:40:24.0490.0410-0.031.562025-12-08 19:40:33.3390.5113-0.810.5381.5
OROIV2025-12-08 19:40:25.7900.04900.280.602025-12-08 19:40:36.1710.2852-0.010.9987.7
SATIGU2025-12-08 19:40:27.5490.0541-0.031.442025-12-08 19:40:39.5640.7413-0.010.6397.9
DIXCH--:---.-----.---.--2025-12-08 19:40:38.4800.5543-1.330.2699.3
MMKCH2025-12-08 19:40:30.0550.0611-0.101.362025-12-08 19:40:43.4940.5273-0.540.67117.4
TURFFR2025-12-08 19:40:34.9300.08610.850.11--:---.-----.---.-- 143.4
SAOFFR2025-12-08 19:40:34.9190.07310.930.10--:---.-----.---.-- 145.4


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth Used
RSP GU1.507.61e-122.8115SI
LSD GU1.404.09e-127.222SI
RRL GU1.401.36e-139.0206SI
BHB GU1.308.11e-248.9156SI
MRGE IV1.701.30e-159.84SI
CIRO GU1.901.20e-160.047SI
REMY GU1.608.88e-268.210SI
PZZ GU1.701.40e-181.5174SI
ORO IV2.202.31e-187.760SI
SATI GU2.107.26e-297.943SI
DIX CH2.201.75e-199.318SI
MMK CH2.104.47e-2117.439SI
SAOF FR1.902.77e-2145.4162SI


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)		 PGV
(m/s)		 PGD
(m)		 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.
(°)
RSP GUHHZ2.5764e-54.9880e-60.0000e+02.4186e-64.2406e-65.8260e-63.5402e-51.1460e-51.5003e-67.7419e-822.8115
RSP GUHHN2.5135e-55.4474e-60.0000e+03.2567e-65.7060e-65.7060e-63.9924e-51.7131e-59.9387e-71.0541e-722.8115
RSP GUHHE4.8098e-59.3652e-60.0000e+06.5782e-61.1179e-51.5318e-56.8328e-53.7221e-52.7023e-61.9661e-722.8115
LSD GUHHZ6.4148e-58.0466e-60.0000e+04.8276e-68.4221e-61.1876e-57.7782e-51.9357e-58.7694e-71.6084e-727.222
LSD GUHHN4.7907e-55.9047e-60.0000e+03.6597e-66.5327e-66.5327e-69.4937e-51.5258e-57.8454e-71.1328e-727.222
LSD GUHHE8.0559e-57.5487e-60.0000e+04.9727e-68.7060e-61.2503e-59.7012e-51.5755e-59.8682e-71.7032e-727.222
RRL GUHHZ3.0667e-66.0491e-70.0000e+05.5534e-71.1268e-61.4550e-67.4964e-62.2776e-63.0595e-71.9958e-839.0206
RRL GUHHN4.7699e-69.2146e-70.0000e+01.0722e-62.1687e-62.1687e-61.6904e-54.5033e-65.6318e-73.9881e-839.0206
RRL GUHHE3.8635e-61.0481e-60.0000e+08.9655e-71.7622e-62.3852e-61.2719e-55.1155e-65.4135e-73.8931e-839.0206
BHB GUHHZ4.4996e-66.9166e-70.0000e+05.4310e-71.0347e-61.3971e-61.3094e-52.4206e-62.9586e-72.1852e-848.9156
BHB GUHHN5.1863e-68.6907e-70.0000e+08.3978e-71.4684e-61.4684e-61.7107e-53.2054e-62.5308e-72.5123e-848.9156
BHB GUHHE4.9161e-68.6486e-70.0000e+06.3818e-71.0930e-61.5185e-61.3778e-51.9736e-62.6121e-72.0990e-848.9156
MRGE IVHHZ1.1911e-51.2507e-60.0000e+08.2553e-71.6011e-62.1914e-61.5200e-54.5703e-62.6209e-73.3742e-859.84
MRGE IVHHN2.2798e-52.3968e-60.0000e+01.1579e-62.3805e-62.3805e-63.5952e-52.8651e-65.9147e-75.2779e-859.84
MRGE IVHHE1.2406e-51.5361e-60.0000e+01.0801e-61.9141e-62.6754e-63.1071e-53.3206e-63.8691e-73.5477e-859.84
CIRO GUHHZ9.6462e-61.4547e-60.0000e+09.5685e-71.7558e-62.5145e-62.1953e-53.4939e-62.1174e-73.2974e-860.047
CIRO GUHHN1.5268e-51.6642e-60.0000e+01.1192e-62.1112e-62.1112e-62.5924e-54.5986e-62.4696e-73.7612e-860.047
CIRO GUHHE1.5388e-51.8739e-60.0000e+09.7789e-71.8817e-62.7288e-62.9927e-53.3078e-61.6292e-73.1349e-860.047
REMY GUHHZ2.6999e-66.9333e-70.0000e+06.3995e-71.1871e-61.5571e-69.6367e-63.5469e-62.7695e-72.0910e-868.210
REMY GUHHN5.1048e-69.4303e-70.0000e+08.2187e-71.4724e-61.4724e-61.5449e-54.9705e-66.3926e-73.2640e-868.210
REMY GUHHE6.4744e-61.2248e-60.0000e+08.3597e-71.6626e-62.3121e-62.2164e-53.3928e-63.6150e-73.8109e-868.210
PZZ GUHHZ3.3461e-68.5254e-70.0000e+08.6997e-71.5821e-62.0589e-61.0231e-55.1495e-63.9772e-72.9583e-881.5174
PZZ GUHHN3.7180e-61.0688e-60.0000e+01.1168e-61.9176e-61.9176e-69.2334e-65.8736e-64.0548e-73.7401e-881.5174
PZZ GUHHE5.8243e-61.4648e-60.0000e+01.2968e-62.1189e-62.9268e-61.3308e-57.2417e-65.4321e-74.7431e-881.5174
SATI GUHHZ4.6690e-65.6409e-70.0000e+04.5496e-78.5228e-71.1512e-69.1408e-61.4559e-62.7525e-71.8054e-897.943
SATI GUHHN7.6740e-61.1023e-60.0000e+06.2030e-71.1520e-61.1520e-61.9051e-51.7617e-61.7936e-72.7075e-897.943
SATI GUHHE7.4904e-61.0233e-60.0000e+07.9545e-71.3410e-61.8757e-62.3196e-53.4560e-62.7710e-72.8248e-897.943
DIX CHHHZ7.5682e-61.8150e-60.0000e+01.5366e-62.6121e-63.5407e-61.8719e-58.7847e-64.2905e-74.2676e-899.318
DIX CHHHN8.1435e-61.8280e-60.0000e+01.7588e-62.8377e-62.8377e-62.0077e-51.0876e-55.4099e-75.4255e-899.318
DIX CHHHE9.1808e-62.1340e-60.0000e+01.7803e-62.9465e-64.0240e-63.5291e-58.3127e-64.4250e-75.1925e-899.318
MMK CHHHZ1.6876e-63.9297e-70.0000e+03.4857e-76.5491e-78.7580e-75.3084e-62.1216e-62.8065e-72.1019e-8117.439
MMK CHHHN2.2695e-65.3153e-70.0000e+04.9189e-78.8271e-78.8271e-78.5409e-62.6223e-61.3750e-71.6419e-8117.439
MMK CHHHE2.2558e-63.1868e-70.0000e+03.1994e-75.5611e-77.2569e-76.9952e-61.7647e-61.3909e-71.1443e-8117.439
SAOF FRHHE2.2558e-63.1868e-70.0000e+03.1994e-75.5611e-77.2569e-76.9952e-61.7647e-61.3909e-71.1443e-8145.4162
*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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