RSNI - Manually revised location

MANUAL Location - Area: Riviera di ponente , magnitude (M_L): 0.8
2025-04-25 20:15:18 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-28 07:08:49

Openstreetmap Stamen Terrain

20 km

Lat : Lon

Leaflet © Stadia Maps © Stamen Design © OpenMapTiles © OpenStreetMap contributors

Earthquake info - Manual location

Event - ID :	250425201453
Magnitude (M_L) :	0.8 +/- 0.2
Origin Time :	2025-04-25 20:15:18.472 (UTC)
Location :	Latitude: 44.218 N, Longitude: 8.266 E
Area :	Riviera di ponente
Depth (km) :	7.51
Distances (km) :	1.1 --- Rialto 2.7 --- Calice Ligure 3.0 --- Magliolo 4.6 --- Tovo San Giacomo 4.7 --- Orco Feglino 5.2 --- Giustenice 7.0 --- Borgio Verezzi 7.3 --- Bormida 7.6 --- Pietra Ligure 8.0 --- Vezzi Portio 8.3 --- Finale Ligure 8.5 --- Mallare 8.6 --- Osiglia 9.9 --- Boissano 9.9 --- Loano 10.9 --- Bardineto 11.1 --- Toirano 12.0 --- Noli 12.1 --- Calizzano 12.1 --- Spotorno

Quality location estimate: Erh: 1 km, Erz: 0.9 km, Nf: 32, Gap: 78 °, Rms: 0.27

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.
CANO	GU	2025-04-25 20:15:20.410	0.004	0	-0.02	1.88	2025-04-25 20:15:21.420	0.027	0	-0.34	1.21	8.5
FNLG	IT	2025-04-25 20:15:21.006	0.020	0	0.02	1.87	2025-04-25 20:15:22.398	0.040	0	-0.33	1.19	11.4
QLNO	IV	2025-04-25 20:15:21.620	0.008	0	-0.55	0.81	2025-04-25 20:15:23.420	0.397	8	-1.36	0.16	15.6
SVA	IT	2025-04-25 20:15:22.319	0.020	0	-0.57	0.77	2025-04-25 20:15:24.607	0.040	0	-1.45	0.09	19.9
RORO	GU	2025-04-25 20:15:22.520	0.011	0	-0.02	1.86	2025-04-25 20:15:24.890	0.065	1	-0.52	0.91	21.3
PVT	IT	2025-04-25 20:15:24.803	0.020	0	0.00	1.79	2025-04-25 20:15:28.619	0.040	0	-0.82	0.23	34.6
GBOS	GU	2025-04-25 20:15:24.740	0.018	0	0.07	1.44	2025-04-25 20:15:28.620	0.108	3	-0.31	1.13	35.1
DNSP	IT	2025-04-25 20:15:25.035	0.020	0	-0.04	1.65	2025-04-25 20:15:30.434	0.040	0	0.55	0.10	36.5
MGRO	GU	2025-04-25 20:15:26.054	0.020	0	-0.27	1.03	2025-04-25 20:15:30.890	0.455	9	-1.16	0.29	42.4
PCP	GU	2025-04-25 20:15:26.100	0.022	1	-0.00	1.68	2025-04-25 20:15:31.262	0.100	2	-0.32	1.12	43.0
IMI	GU	2025-04-25 20:15:26.648	0.020	0	-0.00	1.64	2025-04-25 20:15:32.280	0.220	6	-0.44	0.96	46.1
ENR	GU	2025-04-25 20:15:29.968	0.020	0	-0.36	1.12	2025-04-25 20:15:38.060	0.354	7	-0.40	0.88	68.1
TURF	FR	2025-04-25 20:15:32.890	0.038	1	0.84	0.11	2025-04-25 20:15:41.170	0.314	7	-0.49	0.83	75.2
ESCA	FR	2025-04-25 20:15:34.310	0.020	0	1.01	0.07	2025-04-25 20:15:44.196	0.040	0	0.25	0.62	83.6
BHB	GU	2025-04-25 20:15:36.110	0.053	2	0.15	0.83	2025-04-25 20:15:47.610	0.320	7	-0.51	0.79	105.3

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
CANO	GU	HH	0.86	8.61e-1	8.5	243
FNLG	IT	HN	1.14	1.01e+0	11.4	128
QLNO	IV	HH	0.73	2.22e-1	15.6	28
SVA	IT	HG	0.78	1.60e-1	19.9	57
RORO	GU	HH	1.03	2.51e-1	21.3	234
PVT	IT	HN	0.96	8.64e-2	34.6	234
GBOS	GU	HH	0.69	2.33e-2	35.1	275
DNSP	IT	HN	0.83	5.78e-2	36.5	206
MGRO	GU	HH	0.39	1.57e-2	42.4	242
PCP	GU	HH	0.46	1.95e-2	43.0	32
IMI	GU	HH	0.50	2.28e-2	46.1	221
ENR	GU	HH	1.14	4.60e-2	68.1	271
TURF	FR	HH	0.39	4.78e-3	75.2	249
ESCA	FR	HH	0.62	6.33e-3	83.6	239
BHB	GU	HH	0.96	7.38e-3	105.3	311

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.
(°)

CANO

HHZ

1.8135e-4

1.6299e-5

2.5832e-6

6.6869e-7

4.2190e-7

1.2915e-4

9.0584e-6

1.0715e-6

3.1140e-7

8.5

243

CANO

HHN

2.9628e-4

2.5096e-5

5.6842e-6

2.0379e-6

1.2947e-6

2.0622e-4

3.1180e-5

2.6190e-6

5.2494e-7

8.5

243

CANO

HHE

1.8197e-4

2.1701e-5

4.8864e-6

1.7584e-6

1.0884e-6

2.0431e-4

3.1449e-5

2.1625e-6

4.4078e-7

8.5

243

FNLG

HNZ

2.0576e-4

1.6763e-5

1.7039e-6

5.7886e-7

3.4743e-7

6.1334e-5

8.1887e-6

8.1624e-7

2.1561e-7

11.4

128

FNLG

HNN

1.3638e-4

1.1353e-5

3.4466e-6

9.3989e-7

4.8631e-7

2.6824e-4

1.3715e-5

9.3528e-7

2.3831e-7

11.4

128

FNLG

HNE

2.3817e-4

2.4251e-5

6.9351e-6

2.0658e-6

1.2433e-6

4.1831e-4

2.2239e-5

2.3972e-6

5.3351e-7

11.4

128

QLNO

HHZ

3.0820e-5

3.1912e-6

6.9684e-7

2.6384e-7

1.4851e-7

2.6663e-5

3.1414e-6

2.7409e-7

6.0999e-8

15.6

QLNO

HHN

4.8289e-5

5.8757e-6

1.6534e-6

4.9937e-7

3.1328e-7

9.6386e-5

6.1577e-6

5.4246e-7

9.7771e-8

15.6

QLNO

HHE

4.8910e-5

4.4095e-6

7.9139e-7

2.2405e-7

1.3103e-7

4.1002e-5

3.5726e-6

3.1300e-7

8.2712e-8

15.6

SVA

HGZ

8.6111e-6

1.0860e-6

6.2887e-7

4.7033e-7

2.0483e-7

1.3684e-5

2.6303e-6

2.7090e-7

3.3203e-8

19.9

SVA

HGN

2.4437e-5

2.9465e-6

1.3658e-6

5.3761e-7

2.9032e-7

5.9013e-5

6.4444e-6

4.7831e-7

7.8123e-8

19.9

SVA

HGE

1.4875e-5

1.8260e-6

9.9229e-7

4.4405e-7

2.0093e-7

4.1543e-5

3.7810e-6

2.5665e-7

4.2183e-8

19.9

RORO

HHZ

2.0537e-5

1.6739e-6

5.9531e-7

1.6162e-7

1.0329e-7

2.4147e-5

2.3298e-6

1.9278e-7

3.3137e-8

21.3

234

RORO

HHN

2.7187e-5

5.1140e-6

2.0859e-6

4.7679e-7

2.6960e-7

8.2020e-5

7.2610e-6

4.6754e-7

1.0918e-7

21.3

234

RORO

HHE

2.0952e-5

3.0817e-6

1.0597e-6

2.5499e-7

1.4801e-7

8.0482e-5

4.1744e-6

2.8510e-7

6.9399e-8

21.3

234

PVT

HNZ

7.7716e-6

1.0283e-6

3.5226e-7

3.4216e-7

1.7875e-7

9.4051e-6

1.7658e-6

2.5774e-7

2.1856e-8

34.6

234

PVT

HNN

1.5174e-5

1.7297e-6

5.1152e-7

3.9076e-7

4.2203e-7

1.8631e-5

2.1688e-6

6.3717e-7

5.6272e-8

34.6

234

PVT

HNE

1.3355e-5

1.3753e-6

5.5223e-7

3.0922e-7

1.7227e-7

1.6452e-5

2.2610e-6

2.1699e-7

2.6465e-8

34.6

234

GBOS

HHZ

2.8278e-6

3.3938e-7

1.8083e-7

4.1979e-8

2.2568e-8

6.7846e-6

7.2915e-7

3.8230e-8

7.5368e-9

35.1

275

GBOS

HHN

3.4932e-6

3.4237e-7

1.3268e-7

4.7777e-8

2.1032e-8

6.2763e-6

5.6574e-7

3.4239e-8

7.0124e-9

35.1

275

GBOS

HHE

3.6277e-6

4.6486e-7

1.7816e-7

6.5098e-8

3.4930e-8

5.9576e-6

6.0908e-7

5.9104e-8

1.1405e-8

35.1

275

DNSP

HNZ

4.5702e-6

4.9537e-7

3.8615e-7

3.0364e-7

1.8858e-7

7.6256e-6

1.8942e-6

2.2883e-7

1.8022e-8

36.5

206

DNSP

HNN

4.5385e-6

5.2855e-7

5.0458e-7

3.4287e-7

1.8983e-7

1.3583e-5

2.0692e-6

2.1617e-7

1.6033e-8

36.5

206

DNSP

HNE

3.8791e-6

6.0939e-7

5.0276e-7

2.9558e-7

1.5180e-7

1.0408e-5

3.0878e-6

1.6255e-7

1.8584e-8

36.5

206

MGRO

HHZ

8.7260e-7

1.0815e-7

9.4994e-8

3.5595e-8

1.7594e-8

2.3238e-6

5.1899e-7

2.5909e-8

3.2090e-9

42.4

242

MGRO

HHN

1.7277e-6

2.2606e-7

1.2009e-7

6.7833e-8

3.5219e-8

2.3865e-6

4.3277e-7

4.6452e-8

5.6595e-9

42.4

242

MGRO

HHE

1.4025e-6

1.9086e-7

1.1506e-7

6.3500e-8

2.8439e-8

3.2594e-6

5.5004e-7

3.8834e-8

4.8074e-9

42.4

242

PCP

HHZ

4.1914e-6

4.1266e-7

8.6737e-8

2.7348e-8

1.8175e-8

4.1329e-6

3.5181e-7

3.0959e-8

6.3593e-9

43.0

PCP

HHN

3.5389e-6

4.2257e-7

1.0900e-7

3.6506e-8

1.9945e-8

4.5038e-6

4.3568e-7

3.3439e-8

9.1756e-9

43.0

PCP

HHE

4.7818e-6

4.5703e-7

1.8319e-7

5.1486e-8

2.8068e-8

6.6809e-6

8.5811e-7

5.2295e-8

9.7662e-9

43.0

IMI

HHZ

1.1172e-6

1.5291e-7

1.2316e-7

6.2762e-8

3.0825e-8

1.7943e-6

9.4715e-7

4.1362e-8

4.6310e-9

46.1

221

IMI

HHN

2.5200e-6

3.9867e-7

2.0852e-7

8.5667e-8

8.2408e-8

4.4592e-6

9.4327e-7

1.4050e-7

1.1212e-8

46.1

221

IMI

HHE

1.6588e-6

1.8923e-7

1.1875e-7

6.0009e-8

2.8436e-8

3.6031e-6

5.8574e-7

4.4230e-8

4.5032e-9

46.1

221

ENR

HHZ

4.1247e-6

3.6172e-7

1.4022e-7

4.5446e-8

3.6892e-8

6.1422e-6

5.3092e-7

6.2948e-8

7.7751e-9

68.1

271

ENR

HHN

1.2878e-5

1.3466e-6

3.1594e-7

8.9291e-8

5.2805e-8

1.6632e-5

1.1967e-6

1.1716e-7

2.6638e-8

68.1

271

ENR

HHE

1.1567e-5

1.1531e-6

1.8870e-7

6.0135e-8

3.9105e-8

1.1165e-5

6.8339e-7

8.5471e-8

1.9066e-8

68.1

271

TURF

HHZ

3.4838e-7

4.5695e-8

2.6592e-8

1.6158e-8

1.2715e-8

7.7375e-7

1.4331e-7

1.9454e-8

1.4794e-9

75.2

249

TURF

HHN

5.7819e-7

7.3923e-8

3.8942e-8

1.6341e-8

1.1235e-8

1.1530e-6

1.8878e-7

1.9668e-8

1.8615e-9

75.2

249

TURF

HHE

7.2888e-7

1.0206e-7

4.6632e-8

2.2768e-8

1.4128e-8

1.6142e-6

2.2805e-7

1.7259e-8

2.0437e-9

75.2

249

ESCA

HHZ

2.5855e-7

4.1767e-8

3.0556e-8

1.8242e-8

1.1168e-8

6.9273e-7

1.7697e-7

1.6872e-8

1.0721e-9

83.6

239

ESCA

HHN

4.3552e-7

6.4593e-8

4.2225e-8

2.5853e-8

3.1143e-8

1.3038e-6

2.1993e-7

5.1651e-8

4.3797e-9

83.6

239

ESCA

HHE

3.7293e-7

5.7100e-8

4.1001e-8

2.0672e-8

1.3975e-8

9.8084e-7

1.9369e-7

1.8801e-8

1.7283e-9

83.6

239

BHB

HHZ

1.3001e-6

1.3417e-7

3.0950e-8

1.6530e-8

1.7049e-8

9.8590e-7

1.2472e-7

4.4198e-8

2.7112e-9

105.3

311

BHB

HHN

6.2874e-7

9.0840e-8

5.8256e-8

2.3737e-8

1.7165e-8

8.6563e-7

3.5364e-7

3.0653e-8

2.5348e-9

105.3

311

BHB

HHE

4.8337e-7

6.9949e-8

4.4992e-8

2.5318e-8

1.4030e-8

9.2106e-7

1.6601e-7

3.4828e-8

2.0591e-9

105.3

311

*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: Riviera di ponente , magnitude (ML): 0.8 2025-04-25 20:15:18 (UTC)

MANUAL Location - Area: Riviera di ponente , magnitude (M_L): 0.8
2025-04-25 20:15:18 (UTC)