RSNI - Manually revised location

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 1.1
2025-04-28 12:03:12 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-29 07:04:57

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Earthquake info - Manual location

Event - ID :	250428120230
Magnitude (M_L) :	1.1 +/- 0.2
Origin Time :	2025-04-28 12:03:12.428 (UTC)
Location :	Latitude: 45.747 N, Longitude: 7.828 E
Area :	Alpi Pennine
Depth (km) :	6.01
Distances (km) :	3.7 --- Gressoney-Saint-Jean 5.5 --- Gaby 6.9 --- Issime 7.8 --- Brusson 7.9 --- Challand-Saint-Anselme 9.3 --- Gressoney-la-Trinite 10.2 --- Emarese 11.1 --- Fontainemore 11.4 --- Challand-Saint-Victor 11.7 --- Piedicavallo 12.5 --- Lillianes 12.7 --- Montjovet 13.1 --- Ayas 13.8 --- Riva Valdobbia 13.9 --- Arnad 13.9 --- Rosazza 14.0 --- Verres 14.0 --- Saint-Vincent 14.4 --- Rassa 14.5 --- Alagna Valsesia

Quality location estimate: Erh: 0.8 km, Erz: 0.8 km, Nf: 36, Gap: 73 °, Rms: 0.25

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.
SATI	GU	2025-04-28 12:03:16.420	0.008	0	0.00	2.21	2025-04-28 12:03:18.820	0.049	1	-0.33	0.72	17.2
ORO	IV	2025-04-28 12:03:16.670	0.010	0	-0.01	2.20	2025-04-28 12:03:19.050	0.059	1	-0.44	0.68	19.3
CIRO	GU	2025-04-28 12:03:18.040	0.018	0	-0.02	2.12	2025-04-28 12:03:21.820	0.082	2	-0.01	1.73	27.2
MMK	CH	2025-04-28 12:03:19.385	0.018	0	-0.15	1.19	2025-04-28 12:03:23.330	0.108	3	-0.88	0.32	36.4
DIX	CH	2025-04-28 12:03:21.791	0.020	0	0.00	1.90	2025-04-28 12:03:27.405	0.268	7	-0.83	0.44	50.2
EMBD	CH	2025-04-28 12:03:22.275	0.026	1	0.11	1.41	2025-04-28 12:03:27.773	0.263	7	-0.93	0.39	52.7
VANNI	CH	2025-04-28 12:03:22.795	0.028	1	0.45	0.23	2025-04-28 12:03:28.653	0.446	9	-0.43	0.81	55.0
SIMPL	CH	2025-04-28 12:03:22.620	0.029	1	-0.50	0.62	2025-04-28 12:03:28.610	0.171	5	-1.73	0.14	57.3
LATO	IV	2025-04-28 12:03:22.834	0.020	0	-0.01	1.84	2025-04-28 12:03:29.521	0.040	0	-0.24	1.12	57.6
MRGE	IV	2025-04-28 12:03:23.784	0.020	0	0.70	0.14	2025-04-28 12:03:30.657	0.100	2	0.00	1.38	60.0
LSD	GU	2025-04-28 12:03:23.860	0.032	1	0.00	1.76	2025-04-28 12:03:31.553	0.268	7	0.11	1.03	63.3
VARE	IV	2025-04-28 12:03:25.175	0.020	0	-1.22	0.24	2025-04-28 12:03:33.860	0.258	7	-2.03	0.10	74.5
LAUCH	CH	2025-04-28 12:03:25.815	0.054	2	0.02	1.60	2025-04-28 12:03:34.816	0.100	2	-0.10	1.28	74.9
FIESA	CH	2025-04-28 12:03:26.740	0.020	0	0.13	1.27	2025-04-28 12:03:36.053	0.040	0	-0.33	0.98	80.0
SENIN	CH	2025-04-28 12:03:27.308	0.060	2	0.60	0.22	2025-04-28 12:03:36.439	0.100	2	-0.15	1.21	80.1
MUGIO	CH	2025-04-28 12:03:28.754	0.020	0	-0.99	0.31	2025-04-28 12:03:39.980	0.336	7	-1.91	0.13	96.2
FUSIO	CH	2025-04-28 12:03:29.928	0.020	0	0.03	1.46	2025-04-28 12:03:40.479	0.040	0	-1.44	0.21	101.9

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
SATI	GU	HH	1.26	3.65e-1	17.2	12
CIRO	GU	HH	0.98	7.66e-2	27.2	232
DIX	CH	HH	1.24	7.94e-2	50.2	319
EMBD	CH	HH	0.68	1.97e-2	52.7	0
VANNI	CH	HH	1.20	5.89e-2	55.0	341
SIMPL	CH	HH	0.58	1.31e-2	57.3	15
MRGE	IV	HH	1.00	2.69e-2	60.0	273
LSD	GU	HH	1.05	3.17e-2	63.3	240
VARE	IV	HH	1.25	3.45e-2	74.5	79
LAUCH	CH	HH	1.27	3.62e-2	74.9	357
FIESA	CH	HH	1.17	2.51e-2	80.0	16
SENIN	CH	HH	1.05	1.89e-2	80.1	329
MUGIO	CH	HH	1.40	1.28e-2	96.2	78
FUSIO	CH	HH	0.82	6.27e-3	101.9	39

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.
(°)

SATI

HHZ

6.7966e-5

5.2568e-6

1.3247e-6

3.6590e-7

1.9675e-7

1.0894e-4

5.2277e-6

3.7321e-7

9.4218e-8

17.2

SATI

HHN

1.0087e-4

1.0847e-5

2.7845e-6

7.0154e-7

4.9474e-7

2.2393e-4

8.3019e-6

9.0284e-7

1.9109e-7

17.2

SATI

HHE

8.6634e-5

9.2225e-6

2.4906e-6

6.5155e-7

3.7124e-7

9.9422e-5

1.0385e-5

7.6899e-7

1.9195e-7

17.2

ORO

EHZ

6.0775e-5

7.2293e-6

3.5151e-6

8.0603e-7

4.7312e-7

8.4052e-5

1.4637e-5

7.9231e-7

1.6600e-7

19.3

138

ORO

EHN

1.2771e-4

1.6842e-5

7.0707e-6

1.9715e-6

1.2182e-6

2.1110e-4

2.7482e-5

2.0957e-6

3.8858e-7

19.3

138

ORO

EHE

1.0278e-4

9.4427e-6

4.1296e-6

1.7979e-6

6.9006e-7

1.1963e-4

1.7896e-5

9.6079e-7

1.8947e-7

19.3

138

CIRO

HHZ

1.8888e-5

1.4418e-6

3.4394e-7

8.6744e-8

4.6635e-8

1.4980e-5

1.4061e-6

1.0802e-7

2.9757e-8

27.2

232

CIRO

HHN

2.6637e-5

2.3534e-6

5.5935e-7

2.6305e-7

9.9503e-8

2.0143e-5

3.0522e-6

1.7066e-7

3.8864e-8

27.2

232

CIRO

HHE

2.9419e-5

2.1878e-6

4.0332e-7

1.5933e-7

6.5958e-8

2.2469e-5

1.3343e-6

1.4990e-7

4.3437e-8

27.2

232

MMK

HHZ

3.2055e-5

2.6922e-6

5.9812e-7

2.3076e-7

1.3976e-7

2.7141e-5

1.8508e-6

2.8215e-7

5.8395e-8

36.4

MMK

HHN

2.4442e-5

2.0725e-6

5.4339e-7

1.5098e-7

7.4329e-8

2.3888e-5

2.2233e-6

1.7788e-7

4.7171e-8

36.4

MMK

HHE

6.2558e-5

5.0906e-6

6.5740e-7

2.6590e-7

1.7329e-7

3.4515e-5

2.7057e-6

4.0905e-7

1.1262e-7

36.4

DIX

HHZ

1.4550e-5

1.3781e-6

5.1539e-7

1.6656e-7

6.5958e-8

2.1469e-5

2.3588e-6

1.2443e-7

2.9656e-8

50.2

319

DIX

HHN

1.8992e-5

1.8600e-6

7.1597e-7

2.1204e-7

1.0174e-7

3.5392e-5

4.0836e-6

1.7553e-7

3.7582e-8

50.2

319

DIX

HHE

2.0109e-5

1.9239e-6

4.6265e-7

1.4089e-7

7.8064e-8

2.4941e-5

2.3623e-6

1.4585e-7

3.8415e-8

50.2

319

EMBD

HHZ

2.8246e-6

3.2752e-7

1.9764e-7

1.0930e-7

4.6363e-8

3.0172e-6

1.2673e-6

6.0144e-8

7.3176e-9

52.7

EMBD

HHN

4.0667e-6

3.5569e-7

1.5122e-7

7.0135e-8

2.8402e-8

4.0659e-6

8.2023e-7

4.1041e-8

6.8849e-9

52.7

EMBD

HHE

3.9528e-6

3.3565e-7

1.7409e-7

5.2080e-8

2.5799e-8

4.5232e-6

1.1130e-6

4.2824e-8

8.2707e-9

52.7

VANNI

HHZ

2.4948e-6

3.0722e-7

2.1679e-7

6.2669e-8

3.3852e-8

4.2422e-6

1.5268e-6

5.3259e-8

8.7064e-9

55.0

341

VANNI

HHN

4.8223e-6

5.5176e-7

2.8686e-7

9.9414e-8

4.1656e-8

7.2189e-6

1.9421e-6

7.2868e-8

1.4458e-8

55.0

341

VANNI

HHE

4.2559e-6

4.9580e-7

4.3352e-7

2.1600e-7

7.9370e-8

8.3373e-6

3.2938e-6

1.0934e-7

1.5493e-8

55.0

341

SIMPL

HHZ

3.0953e-6

4.4009e-7

2.1354e-7

5.1538e-8

2.8912e-8

6.2136e-6

5.5177e-7

4.6934e-8

1.0093e-8

57.3

SIMPL

HHN

2.4288e-6

2.8010e-7

1.2988e-7

3.2048e-8

1.6100e-8

5.1698e-6

6.0904e-7

2.6706e-8

6.4560e-9

57.3

SIMPL

HHE

2.7216e-6

2.9689e-7

1.2902e-7

3.0258e-8

1.6497e-8

5.3318e-6

4.4426e-7

2.7394e-8

6.5665e-9

57.3

MRGE

HHZ

6.5567e-6

6.6880e-7

1.1694e-7

4.1604e-8

2.2655e-8

4.3090e-6

5.9134e-7

5.3273e-8

1.2955e-8

60.0

273

MRGE

HHN

9.3614e-6

9.0973e-7

1.9505e-7

6.6687e-8

3.6539e-8

9.4189e-6

9.7984e-7

6.5748e-8

1.6035e-8

60.0

273

MRGE

HHE

6.5557e-6

6.4621e-7

1.9131e-7

6.8529e-8

2.9763e-8

7.1755e-6

6.7947e-7

6.0018e-8

1.4612e-8

60.0

273

LSD

HHZ

4.7160e-6

5.2622e-7

1.9126e-7

6.8144e-8

4.2711e-8

9.4602e-6

6.1977e-7

6.3546e-8

1.1404e-8

63.3

240

LSD

HHN

7.7631e-6

7.6366e-7

2.3969e-7

7.1519e-8

3.5241e-8

1.1196e-5

9.9522e-7

6.9796e-8

1.4865e-8

63.3

240

LSD

HHE

1.1986e-5

1.0863e-6

2.3076e-7

5.6727e-8

3.0194e-8

1.0976e-5

7.6672e-7

6.8149e-8

1.7430e-8

63.3

240

VARE

HHZ

2.0649e-6

2.8580e-7

2.2577e-7

6.8708e-8

3.1591e-8

4.8716e-6

8.2831e-7

4.7477e-8

7.7467e-9

74.5

VARE

HHN

3.2103e-6

4.9355e-7

3.5534e-7

1.3811e-7

4.6425e-8

9.7394e-6

1.5459e-6

6.5472e-8

1.2570e-8

74.5

VARE

HHE

2.2062e-6

4.0790e-7

2.7230e-7

7.6604e-8

4.2671e-8

4.8510e-6

1.5030e-6

6.2506e-8

1.0087e-8

74.5

LAUCH

HHZ

1.6011e-6

2.1654e-7

1.0365e-7

4.0584e-8

1.7883e-8

5.4613e-6

4.6687e-7

2.4326e-8

4.3359e-9

74.9

357

LAUCH

HHN

2.0572e-6

2.8870e-7

1.3899e-7

4.5015e-8

2.0627e-8

5.1394e-6

4.2759e-7

2.9003e-8

6.1284e-9

74.9

357

LAUCH

HHE

2.2147e-6

4.3702e-7

3.1012e-7

7.6363e-8

4.3967e-8

9.0812e-6

1.2717e-6

7.2943e-8

1.2032e-8

74.9

357

FIESA

HHZ

3.5701e-6

3.6984e-7

1.4923e-7

8.8402e-8

4.9735e-8

4.2183e-6

6.7380e-7

6.4246e-8

8.4436e-9

80.0

FIESA

HHN

2.4500e-6

2.9113e-7

1.8464e-7

7.5564e-8

4.7484e-8

6.1073e-6

7.4668e-7

4.9436e-8

6.7792e-9

80.0

FIESA

HHE

2.7020e-6

3.7443e-7

2.0248e-7

9.6066e-8

4.5879e-8

4.5053e-6

9.7313e-7

5.2976e-8

9.3161e-9

80.0

SENIN

HHZ

1.0551e-6

1.9670e-7

1.6379e-7

6.4745e-8

2.9639e-8

3.8436e-6

7.2362e-7

4.0183e-8

5.9859e-9

80.1

329

SENIN

HHN

1.4349e-6

1.8649e-7

1.4203e-7

7.4244e-8

3.0384e-8

4.3124e-6

8.2327e-7

3.8843e-8

5.4853e-9

80.1

329

SENIN

HHE

2.0025e-6

2.9273e-7

1.5961e-7

5.9616e-8

3.2559e-8

3.9764e-6

1.0040e-6

5.0544e-8

7.4496e-9

80.1

329

MUGIO

HHZ

1.3372e-6

1.7660e-7

8.7625e-8

3.0955e-8

1.6815e-8

2.9364e-6

3.0837e-7

2.5182e-8

4.5714e-9

96.2

MUGIO

HHN

2.5333e-6

2.3203e-7

1.0564e-7

3.2428e-8

1.7270e-8

2.7766e-6

4.0667e-7

2.7155e-8

6.2299e-9

96.2

MUGIO

HHE

1.5540e-6

1.7852e-7

1.0621e-7

3.8304e-8

1.8043e-8

2.3271e-6

3.7461e-7

2.6010e-8

4.5232e-9

96.2

FUSIO

HHZ

6.7722e-7

9.7791e-8

6.5366e-8

2.0074e-8

1.0050e-8

1.5357e-6

2.9952e-7

1.5582e-8

2.6267e-9

101.9

FUSIO

HHN

9.1536e-7

1.1629e-7

6.4860e-8

2.3596e-8

1.0110e-8

2.8703e-6

2.8959e-7

1.6396e-8

2.9063e-9

101.9

FUSIO

HHE

8.4398e-7

1.0919e-7

6.7707e-8

2.0706e-8

9.0514e-9

1.8712e-6

2.4617e-7

1.3500e-8

2.3143e-9

101.9

*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): 1.1 2025-04-28 12:03:12 (UTC)

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 1.1
2025-04-28 12:03:12 (UTC)