AUTOMATIC Location - Area: Alpi Graie , magnitude (ML): 1.3
2025-12-22 21:40:20 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-22 21:43:45

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Earthquake info - RsniPicker2 automatic location
Event - ID :251222213842
Magnitude (ML) :1.3 +/- 0.2
Origin Time :2025-12-22 21:40:20.49 (UTC)
Location : Latitude: 45.753 N, Longitude: 6.983 E
Area :Alpi Graie
Depth (km) :6.31
Distances (km) : 1.3 --- Pre -Saint-Didier (AO)
4.2 --- Morgex (AO)
4.5 --- Courmayeur (AO)
4.7 --- La Thuile (AO)
6.9 --- La Salle (AO)
13.2 --- Avise (AO)
14.9 --- Saint-Nicolas (AO)
15.0 --- Valgrisenche (AO)
15.3 --- Arvier (AO)
17.1 --- Saint-Rhemy-En-Bosses (AO)
17.2 --- Rhemes-Saint-Georges (AO)
17.3 --- Introd (AO)
18.4 --- Villeneuve (AO)
19.5 --- Saint-Oyen (AO)
19.8 --- Saint-Pierre (AO)
20.6 --- Etroubles (AO)
21.1 --- Aymavilles (AO)
21.8 --- Sarre (AO)
22.9 --- Rhemes-Notre-Dame (AO)
23.1 --- Jovencan (AO)

Quality location estimate:
Erh: 0.8 km, Erz: 0.6 km, Nf: 22, Gap: 84°, Rms: 0.221 s
Stazioni validate: 13


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.
MRGEIV2025-12-22 21:40:23.0200.00500.031.762025-12-22 21:40:24.1600.0270-0.460.638.9
BLANCGU2025-12-22 21:40:23.7300.00600.021.802025-12-22 21:40:24.7870.0851-1.080.2112.5
REMYGU2025-12-22 21:40:24.6900.0090-0.051.702025-12-22 21:40:27.2600.0661-0.350.7117.6
RSLFR2025-12-22 21:40:26.3090.0150-0.041.732025-12-22 21:40:29.7300.0881-0.550.5229.3
LSDGU2025-12-22 21:40:27.3890.01800.160.802025-12-22 21:40:31.5490.1402-0.221.0735.3
CIROGU--:---.-----.---.--2025-12-22 21:40:35.4100.1682-1.260.1848.9
OGMOFR2025-12-22 21:40:32.1190.0330-0.011.522025-12-22 21:40:39.5700.2732-0.440.7665.3
RSPGU2025-12-22 21:40:33.2000.03600.121.162025-12-22 21:40:40.8200.2132-0.800.4071.1
OROIV--:---.-----.---.--2025-12-22 21:40:44.0400.2372-0.320.8779.1
MMKCH2025-12-22 21:40:35.0000.0420-0.041.392025-12-22 21:40:44.1930.2622-1.270.1983.1
EMBDCH2025-12-22 21:40:35.3100.04200.011.372025-12-22 21:40:45.4040.2552-0.310.8683.7
RRLGU2025-12-22 21:40:36.9300.0711-0.201.09--:---.-----.---.-- 94.0
LAUCHCH2025-12-22 21:40:37.5200.05010.031.27--:---.-----.---.-- 95.7


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth Used
MRGE IV1.201.68e+08.973SI
REMY GU0.802.32e-117.655SI
LSD GU1.301.87e-135.3160SI
CIRO GU1.406.65e-248.9110SI
RSP GU1.405.58e-271.1162SI
ORO IV1.505.52e-279.1100SI
MMK CH1.301.60e-283.166SI
RRL GU1.401.85e-294.0189SI


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.
(°)
MRGE IVHHZ2.3678e-42.7511e-50.0000e+07.5397e-61.3889e-51.9949e-51.0768e-42.7376e-51.9619e-63.7602e-78.973
MRGE IVHHN5.3591e-45.3272e-50.0000e+09.8807e-61.9355e-51.9355e-52.5644e-41.7818e-52.1791e-64.1472e-78.973
MRGE IVHHE6.2919e-46.7545e-50.0000e+01.6608e-53.4303e-55.1645e-52.4661e-42.6394e-52.3747e-66.8617e-78.973
BLANCGUHHZ5.3621e-57.6877e-60.0000e+04.6926e-68.0748e-61.1377e-51.7313e-41.8213e-59.1470e-71.8222e-712.5-1
BLANCGUHHN8.0202e-59.9053e-60.0000e+06.2691e-61.1185e-51.1185e-51.9723e-42.2479e-51.3101e-62.1306e-712.5-1
BLANCGUHHE7.3327e-59.8958e-60.0000e+08.1977e-61.3942e-51.8519e-51.6934e-43.8965e-51.8541e-62.9762e-712.5-1
REMY GUHHZ2.1442e-52.6186e-60.0000e+01.4977e-62.4869e-63.3116e-62.5416e-58.2934e-65.9377e-75.0917e-817.655
REMY GUHHN3.8674e-53.9193e-60.0000e+02.2287e-64.3293e-64.3293e-63.2265e-56.5451e-68.8073e-78.5784e-817.655
REMY GUHHE2.4886e-54.2747e-60.0000e+02.2790e-64.1946e-66.0179e-63.8575e-59.7875e-65.4603e-76.7270e-817.655
LSD GUHHZ2.9018e-53.4164e-60.0000e+01.9214e-63.6631e-65.3716e-63.5632e-55.6965e-65.9944e-78.2131e-835.3160
LSD GUHHN5.8656e-54.5597e-60.0000e+01.9539e-63.8900e-63.8900e-63.2994e-56.9939e-63.4503e-78.9838e-835.3160
LSD GUHHE3.9408e-53.7369e-60.0000e+01.8194e-63.4312e-64.9917e-63.1409e-56.7239e-63.1644e-78.0506e-835.3160
CIRO GUHHZ7.8719e-68.4238e-70.0000e+03.9318e-77.7396e-71.1515e-69.7911e-69.8308e-78.0842e-81.6146e-848.9110
CIRO GUHHN9.0668e-61.0481e-60.0000e+04.0676e-77.8751e-77.8751e-79.1100e-61.1116e-67.5981e-82.2847e-848.9110
CIRO GUHHE6.1061e-66.1257e-70.0000e+02.7109e-75.1848e-77.5352e-79.5437e-65.4227e-77.3040e-81.4982e-848.9110
RSP GUHHZ4.7687e-66.7598e-70.0000e+04.9449e-78.3608e-71.1557e-61.1245e-51.3165e-61.0394e-72.4154e-871.1162
RSP GUHHN8.5589e-61.1938e-60.0000e+07.5748e-71.3338e-61.3338e-61.2684e-52.3797e-61.2848e-72.7759e-871.1162
RSP GUHHE4.7002e-67.1942e-70.0000e+06.0242e-79.7500e-71.3137e-61.4466e-52.3309e-61.6757e-72.4985e-871.1162
MMK CHHHZ2.4360e-63.2029e-70.0000e+02.1006e-73.8068e-75.3016e-74.0383e-67.8170e-75.6904e-89.4720e-983.166
MMK CHHHN1.5838e-62.3898e-70.0000e+02.0176e-73.3531e-73.3531e-74.0024e-67.6186e-74.8568e-81.2917e-883.166
MMK CHHHE1.6284e-62.1255e-70.0000e+01.4640e-72.6469e-73.7586e-73.1066e-64.1282e-73.5022e-86.1562e-983.166
RRL GUHHZ7.3326e-71.2883e-70.0000e+09.5520e-81.8636e-72.9538e-72.7095e-63.6543e-71.2352e-71.7706e-894.0189
RRL GUHHN6.7704e-71.9058e-70.0000e+01.7068e-72.8704e-72.8704e-71.7806e-61.0323e-69.5208e-82.4167e-894.0189
RRL GUHHE4.8703e-71.6079e-70.0000e+01.8565e-73.1443e-74.3973e-71.7757e-61.3268e-68.4375e-82.0087e-894.0189
*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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