RSNI - Manually revised location

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.1
2026-09-27 23:52:50 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-28 10:20:23

Earthquake info - Manual location

Event - ID :	260927235224
Magnitude (M_L) :	0.1 +/- 0.2
Origin Time :	2026-09-27 23:52:50.752 (UTC)
Location :	Latitude: 44.889 N, Longitude: 6.826 E
Area :	Alpi Cozie
Depth (km) :	13.55
Distances (km) :	6.4 --- Sauze di Cesana 7.5 --- Cesana Torinese 8.2 --- Claviere 8.8 --- Sestriere 15.7 --- Sauze d Oulx 16.1 --- Oulx 16.5 --- Pragelato 17.5 --- Prali 18.7 --- Salza di Pinerolo 19.8 --- Massello 21.0 --- Salbertrand 23.2 --- Bardonecchia 23.5 --- Perrero 23.9 --- Usseaux 24.2 --- Fenestrelle 24.6 --- Exilles 24.7 --- Bobbio Pellice 27.3 --- Roure 27.5 --- Villar Pellice 28.6 --- Chiomonte

Quality location estimate: Erh: 0.9 km, Erz: 1.5 km, Nf: 20, Gap: 91 °, Rms: 0.31

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.
RRL	GU	2026-09-27 23:52:54.010	0.005	0	-0.01	2.03	2026-09-27 23:52:55.550	0.029	0	-0.70	0.67	16.4
FENE	IV	2026-09-27 23:52:56.212	0.020	0	0.01	1.94	2026-09-27 23:52:59.230	0.040	0	-0.61	0.58	28.3
OGAG	FR	2026-09-27 23:52:56.450	0.020	0	0.02	1.91	2026-09-27 23:52:59.671	0.040	0	-0.73	0.66	29.2
PONC	IV	2026-09-27 23:52:57.559	0.020	0	0.03	1.74	2026-09-27 23:53:01.172	0.040	0	-1.11	0.33	36.5
BHB	GU	2026-09-27 23:52:58.010	0.020	1	-0.06	1.67	2026-09-27 23:53:01.856	0.092	2	-1.24	0.24	37.7
OGMO	FR	2026-09-27 23:52:58.330	0.020	0	-0.09	1.48	2026-09-27 23:53:02.785	0.040	0	-0.91	0.50	39.5
RSP	GU	2026-09-27 23:52:59.577	0.020	0	0.03	1.65	2026-09-27 23:53:05.194	0.040	0	-0.42	0.46	47.3
PZZ	GU	2026-09-27 23:52:59.752	0.020	0	-0.21	0.72	2026-09-27 23:53:05.798	0.380	8	-0.74	0.60	50.6
LATO	IV	2026-09-27 23:53:03.659	0.020	0	0.78	0.00	2026-09-27 23:53:11.202	0.040	0	-0.17	0.99	69.0
LSD	GU	2026-09-27 23:53:03.440	0.020	0	0.06	1.29	2026-09-27 23:53:11.147	0.040	0	-0.91	0.54	69.7

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
RRL	GU	HH	0.38	6.11e-2	16.4	321
FENE	IV	HH	-0.10	1.10e-2	28.3	50
OGAG	FR	HH	-0.12	9.90e-3	29.2	244
PONC	IV	HH	0.30	1.71e-2	36.5	152
BHB	GU	HH	0.05	8.27e-3	37.7	100
RSP	GU	HH	-0.06	4.73e-3	47.3	50
PZZ	GU	HH	0.30	1.53e-2	50.6	152
LSD	GU	HH	-0.06	1.98e-3	69.7	21

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.
(°)

RRL

HHZ

6.2280e-6

6.1755e-7

1.4619e-7

3.9777e-8

2.0722e-8

1.0790e-5

7.7175e-7

3.9831e-8

9.4459e-9

16.4

321

RRL

HHN

8.2050e-6

8.6035e-7

2.9283e-7

7.9109e-8

5.0110e-8

1.6948e-5

1.0244e-6

9.1809e-8

1.8364e-8

16.4

321

RRL

HHE

5.9269e-6

9.2125e-7

4.3694e-7

1.8544e-7

8.3437e-8

1.2835e-5

2.3995e-6

1.2022e-7

2.1352e-8

16.4

321

FENE

HHZ

2.7091e-6

2.7427e-7

5.7867e-8

1.7597e-8

1.0454e-8

2.3852e-6

2.1671e-7

2.1754e-8

5.6058e-9

28.3

FENE

HHN

3.0712e-6

3.0836e-7

8.7543e-8

2.0663e-8

1.2536e-8

3.7566e-6

3.3455e-7

2.3866e-8

6.1969e-9

28.3

FENE

HHE

3.8042e-6

3.1549e-7

7.9840e-8

1.9123e-8

1.0353e-8

2.6884e-6

2.5813e-7

2.3506e-8

5.8513e-9

28.3

OGAG

HHZ

4.7407e-7

1.0845e-7

7.2208e-8

2.5460e-8

1.2978e-8

1.4702e-6

4.5489e-7

2.0159e-8

2.6963e-9

29.2

244

OGAG

HHN

4.7000e-7

1.0407e-7

8.1415e-8

3.4489e-8

1.7550e-8

9.5139e-7

3.5445e-7

2.2385e-8

2.5118e-9

29.2

244

OGAG

HHE

4.6514e-7

1.1461e-7

7.2491e-8

4.0237e-8

2.4731e-8

7.7621e-7

4.0827e-7

3.7880e-8

4.0380e-9

29.2

244

PONC

HHZ

4.1226e-6

3.5479e-7

6.9059e-8

2.1248e-8

1.2639e-8

2.0023e-6

2.6532e-7

3.0524e-8

7.0351e-9

36.5

152

PONC

HHN

3.0746e-6

3.4599e-7

1.2031e-7

3.1824e-8

1.7807e-8

6.2260e-6

3.0083e-7

3.2577e-8

7.4373e-9

36.5

152

PONC

HHE

1.8850e-6

2.2393e-7

7.8882e-8

1.8701e-8

1.0514e-8

2.8167e-6

2.9697e-7

1.8845e-8

4.3536e-9

36.5

152

BHB

HHZ

1.6437e-6

1.8296e-7

5.2237e-8

1.7355e-8

3.0456e-8

2.4938e-6

2.2845e-7

7.0577e-8

4.4939e-9

37.7

100

BHB

HHN

1.2410e-6

1.6325e-7

7.3196e-8

1.8720e-8

1.7970e-8

3.4095e-6

2.0689e-7

3.7974e-8

3.9840e-9

37.7

100

BHB

HHE

1.5242e-6

1.6204e-7

5.4833e-8

1.3403e-8

1.4641e-8

2.7109e-6

2.6147e-7

3.6617e-8

3.3500e-9

37.7

100

RSP

HHZ

8.1607e-7

9.1430e-8

2.5345e-8

1.0478e-8

6.8392e-9

1.0010e-6

9.2449e-8

1.2662e-8

1.9847e-9

47.3

RSP

HHN

9.1165e-7

1.0060e-7

3.7325e-8

1.4459e-8

6.5073e-9

1.1360e-6

1.4538e-7

1.0405e-8

2.4401e-9

47.3

RSP

HHE

8.4479e-7

1.2528e-7

3.9779e-8

1.1814e-8

6.3392e-9

2.5807e-6

1.2840e-7

1.3028e-8

2.4124e-9

47.3

PZZ

HHZ

9.0532e-7

1.3624e-7

9.1501e-8

1.9174e-8

1.2248e-8

2.7270e-6

3.0672e-7

2.2287e-8

3.3091e-9

50.6

152

PZZ

HHN

1.1690e-6

1.5950e-7

1.1638e-7

3.2252e-8

2.1889e-8

3.5397e-6

5.3540e-7

3.8681e-8

4.0996e-9

50.6

152

PZZ

HHE

1.4806e-6

2.2475e-7

1.6233e-7

3.7750e-8

2.0568e-8

3.7306e-6

6.4617e-7

2.9591e-8

5.0862e-9

50.6

152

LSD

HHZ

2.3173e-7

2.7255e-8

1.1966e-8

4.5913e-9

3.3252e-9

4.9546e-7

4.9130e-8

5.3568e-9

6.5606e-10

69.7

LSD

HHN

3.6185e-7

3.4896e-8

1.4788e-8

5.1315e-9

2.9446e-9

5.7211e-7

6.7022e-8

4.4955e-9

8.8956e-10

69.7

LSD

HHE

5.4503e-7

4.4765e-8

1.8053e-8

5.6757e-9

3.3555e-9

4.5625e-7

7.4381e-8

5.2453e-9

9.0926e-10

69.7

*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 Cozie , magnitude (ML): 0.1 2026-09-27 23:52:50 (UTC)

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.1
2026-09-27 23:52:50 (UTC)