RSNI - Manually revised location

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 0.7
2026-09-18 14:42:22 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-18 18:18:22

Earthquake info - Manual location

Event - ID :	260918144042
Magnitude (M_L) :	0.7 +/- 0.2
Origin Time :	2026-09-18 14:42:22.578 (UTC)
Location :	Latitude: 45.901 N, Longitude: 6.904 E
Area :	Alpi Pennine
Depth (km) :	3.62
Distances (km) :	13.2 --- Courmayeur 16.5 --- Pre -Saint-Didier 18.9 --- Morgex 20.6 --- La Thuile 21.5 --- La Salle 23.0 --- Saint-Rhemy-En-Bosses 25.3 --- Saint-Oyen 26.7 --- Etroubles 28.1 --- Avise 28.8 --- Saint-Nicolas 29.9 --- Arvier 30.2 --- Allein 31.9 --- Ollomont 32.0 --- Introd 32.2 --- Villeneuve 32.5 --- Valgrisenche 32.5 --- Doues 32.9 --- Saint-Pierre 33.1 --- Gignod 33.5 --- Rhemes-Saint-Georges

Quality location estimate: Erh: 0.8 km, Erz: 0.5 km, Nf: 20, Gap: 168 °, Rms: 0.24

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.
BLANC	GU	2026-09-18 14:42:24.900	0.004	0	0.00	2.26	2026-09-18 14:42:25.520	0.116	3	-1.01	0.42	9.7
MRGE	IV	2026-09-18 14:42:27.040	0.010	0	0.05	1.91	2026-09-18 14:42:29.710	0.066	1	-0.16	1.05	19.7
REMY	GU	2026-09-18 14:42:27.550	0.011	0	-0.02	2.23	2026-09-18 14:42:30.359	0.068	1	-0.48	0.26	21.7
RSL	FR	2026-09-18 14:42:29.190	0.016	0	-0.01	2.11	2026-09-18 14:42:32.906	0.137	4	-0.61	0.35	32.2
DIX	CH	2026-09-18 14:42:31.718	0.020	0	-0.01	1.90	2026-09-18 14:42:36.615	0.167	5	-1.22	0.35	43.9
LSD	GU	2026-09-18 14:42:32.502	0.020	0	-0.01	1.84	2026-09-18 14:42:38.261	0.040	0	-0.91	0.42	52.6
SENIN	CH	2026-09-18 14:42:34.239	0.020	0	-0.16	1.12	2026-09-18 14:42:40.970	0.376	8	-1.58	0.22	60.0
SATI	GU	2026-09-18 14:42:36.841	0.020	0	0.39	0.18	2026-09-18 14:42:45.230	0.316	7	-1.23	0.35	75.0
MMK	CH	2026-09-18 14:42:37.829	0.020	0	0.09	1.29	2026-09-18 14:42:47.320	0.343	7	-0.93	0.46	83.8
FIESA	CH	2026-09-18 14:42:42.858	0.020	0	0.07	1.19	2026-09-18 14:42:54.440	0.518	9	-2.27	0.08	110.4

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
MRGE	IV	HH	0.63	9.94e-2	19.7	140
REMY	GU	HH	0.35	5.09e-2	21.7	110
DIX	CH	HH	0.88	4.48e-2	43.9	63
LSD	GU	HH	0.36	9.55e-3	52.6	160
SENIN	CH	HH	0.86	2.26e-2	60.0	31
SATI	GU	HH	0.92	9.33e-3	75.0	92
MMK	CH	HH	0.88	6.08e-3	83.8	78

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.
(°)

BLANC

HHZ

4.1477e-5

6.5720e-6

4.3096e-6

1.6228e-6

8.0997e-7

1.5469e-4

1.9022e-5

1.0770e-6

1.5798e-7

9.7

160

BLANC

HHN

8.2574e-5

1.1386e-5

4.4248e-6

1.3481e-6

1.0961e-6

2.5469e-4

1.4398e-5

1.4306e-6

2.6540e-7

9.7

160

BLANC

HHE

7.1911e-5

1.6745e-5

9.6865e-6

3.9225e-6

2.1163e-6

2.8223e-4

3.2655e-5

3.2903e-6

3.5286e-7

9.7

160

MRGE

HHZ

3.3518e-6

6.3485e-7

3.5153e-7

1.2311e-7

6.5751e-8

5.6384e-6

2.0173e-6

9.5481e-8

1.5602e-8

19.7

140

MRGE

HHN

5.8246e-6

1.0085e-6

6.8384e-7

3.0449e-7

1.4230e-7

1.1121e-5

4.2359e-6

1.9745e-7

2.7376e-8

19.7

140

MRGE

HHE

5.4520e-6

8.4666e-7

4.9817e-7

2.1070e-7

1.0200e-7

8.4322e-6

2.5429e-6

1.5247e-7

2.3660e-8

19.7

140

REMY

HHZ

7.4462e-6

9.1951e-7

3.7013e-7

1.9983e-7

7.9135e-8

1.4041e-5

1.8044e-6

8.6189e-8

1.3460e-8

21.7

110

REMY

HHN

6.4437e-6

8.4771e-7

4.3650e-7

2.9270e-7

1.2040e-7

2.1343e-5

1.6680e-6

1.3466e-7

1.9205e-8

21.7

110

REMY

HHE

7.3502e-6

9.7413e-7

4.3714e-7

1.9537e-7

6.6457e-8

1.2196e-5

1.6459e-6

9.2318e-8

1.3782e-8

21.7

110

DIX

HHZ

2.8610e-6

5.7129e-7

4.0894e-7

1.4746e-7

7.4304e-8

1.1276e-5

2.3000e-6

1.0479e-7

1.4853e-8

43.9

DIX

HHN

2.9983e-6

5.2267e-7

3.8027e-7

1.5173e-7

7.5059e-8

1.0603e-5

1.9333e-6

9.8954e-8

1.3491e-8

43.9

DIX

HHE

3.8673e-6

5.9474e-7

4.3546e-7

1.5804e-7

7.8907e-8

1.3995e-5

2.4518e-6

1.0777e-7

1.4271e-8

43.9

LSD

HHZ

5.7252e-7

8.5756e-8

6.3377e-8

3.7696e-8

1.4384e-8

1.2233e-6

2.8133e-7

1.6967e-8

2.0431e-9

52.6

160

LSD

HHN

7.5173e-7

1.1960e-7

6.2874e-8

2.3015e-8

1.3359e-8

1.4619e-6

3.9191e-7

1.9746e-8

2.7346e-9

52.6

160

LSD

HHE

6.2167e-7

1.2651e-7

7.9570e-8

4.1092e-8

1.4049e-8

1.6434e-6

2.9782e-7

2.0257e-8

3.0329e-9

52.6

160

SENIN

HHZ

9.9524e-7

2.3426e-7

2.0098e-7

7.7775e-8

3.0403e-8

2.7001e-6

9.7095e-7

4.8912e-8

7.7077e-9

60.0

SENIN

HHN

1.0675e-6

2.2879e-7

1.5668e-7

6.2536e-8

3.0057e-8

2.4877e-6

9.2495e-7

3.6213e-8

5.4861e-9

60.0

SENIN

HHE

1.1751e-6

2.7048e-7

2.1732e-7

9.8978e-8

6.5760e-8

4.3096e-6

1.1139e-6

8.5075e-8

2.0981e-8

60.0

SATI

HHZ

5.1995e-7

7.0877e-8

4.0671e-8

1.5476e-8

7.0605e-9

1.5620e-6

1.6736e-7

1.1450e-8

1.5951e-9

75.0

SATI

HHN

9.1502e-7

1.2567e-7

7.1243e-8

2.3216e-8

1.0842e-8

3.7172e-6

2.4346e-7

1.6629e-8

3.3217e-9

75.0

SATI

HHE

1.0114e-6

1.5385e-7

8.8120e-8

2.6632e-8

1.5434e-8

5.1308e-6

2.6341e-7

2.4159e-8

3.6504e-9

75.0

MMK

HHZ

4.7625e-7

9.6604e-8

5.6585e-8

2.2033e-8

9.5753e-9

1.4466e-6

2.2463e-7

1.7645e-8

2.5773e-9

83.8

MMK

HHN

5.5722e-7

1.0403e-7

7.0887e-8

2.8386e-8

1.1241e-8

1.9873e-6

5.1209e-7

1.5890e-8

2.8728e-9

83.8

MMK

HHE

4.6352e-7

9.2220e-8

5.1867e-8

2.1841e-8

1.0177e-8

1.1513e-6

2.3932e-7

1.1647e-8

2.5811e-9

83.8

FIESA

HHZ

5.7871e-7

1.0007e-7

8.4402e-8

5.6772e-8

3.1252e-8

1.4974e-6

6.1906e-7

3.0719e-8

2.8946e-9

110.4

FIESA

HHN

3.7292e-7

1.0086e-7

9.0371e-8

5.7640e-8

4.8583e-8

1.0654e-6

7.1478e-7

6.5871e-8

4.4814e-9

110.4

FIESA

HHE

2.9397e-7

7.7570e-8

7.1226e-8

4.7843e-8

3.8430e-8

1.1392e-6

5.7544e-7

5.0986e-8

4.0517e-9

110.4

*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)

MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.7 2026-09-18 14:42:22 (UTC)

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 0.7
2026-09-18 14:42:22 (UTC)