RSNI - Manually revised location

MANUAL Location - Area: Valdarno inferiore , magnitude (M_L): 0.8
2026-02-12 07:47:29 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-02-12 07:58:39

Earthquake info - Manual location

Event - ID :	260212074704
Magnitude (M_L) :	0.8 +/- 0.2
Origin Time :	2026-02-12 07:47:29.485 (UTC)
Location :	Latitude: 43.871 N, Longitude: 10.423 E
Area :	Valdarno inferiore
Depth (km) :	2.68
Distances (km) :	6.8 --- Massarosa 7.2 --- Lucca 10.2 --- Vecchiano 10.8 --- Pescaglia 11.9 --- San Giuliano Terme 12.3 --- Camaiore 12.4 --- Capannori 13.9 --- Viareggio 14.2 --- Fabbriche di Vallico 15.6 --- Borgo a Mozzano 16.1 --- Porcari 17.1 --- Pisa 17.4 --- Stazzema 17.5 --- Calci 18.0 --- Pietrasanta 18.9 --- Villa Basilica 19.8 --- Montecarlo 20.4 --- Vergemoli 20.5 --- Bagni di Lucca 20.6 --- Buti

Quality location estimate: Erh: 1.3 km, Erz: 1.2 km, Nf: 18, Gap: 160 °, Rms: 0.13

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.
MAIM	GU	2026-02-12 07:47:31.630	0.006	0	0.12	1.04	2026-02-12 07:47:33.003	0.027	0	-0.02	1.94	7.8
CME	IT	2026-02-12 07:47:32.293	0.020	0	-0.18	0.77	2026-02-12 07:47:34.683	0.040	0	-0.00	1.94	13.8
CARD	GU	2026-02-12 07:47:33.180	0.011	0	0.00	2.03	2026-02-12 07:47:35.940	0.053	1	0.03	1.79	18.1
PII	IV	2026-02-12 07:47:32.750	0.009	0	-0.86	0.06	2026-02-12 07:47:34.908	0.040	0	-1.81	0.00	18.7
VLC	MN	2026-02-12 07:47:35.660	0.018	0	0.01	1.95	2026-02-12 07:47:40.230	0.096	2	0.04	1.43	32.3
POPM	GU	2026-02-12 07:47:35.870	0.019	0	-0.01	1.92	2026-02-12 07:47:40.310	0.097	2	-0.37	0.45	33.2
SARM	GU	2026-02-12 07:47:35.950	0.019	0	-0.22	0.70	2026-02-12 07:47:40.870	0.112	3	-0.23	0.89	35.1
EQUI	GU	2026-02-12 07:47:36.378	0.020	0	-0.61	0.09	2026-02-12 07:47:41.405	0.118	3	-1.12	0.06	39.4
GRAM	GU	2026-02-12 07:47:43.030	0.038	1	0.17	0.91	2026-02-12 07:47:53.122	0.040	0	0.69	0.04	74.7

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
MAIM	GU	HH	0.74	6.96e-1	7.8	50
CME	IT	HN	1.03	5.52e-1	13.8	314
CARD	GU	HH	1.29	6.15e-1	18.1	15
PII	IV	HH	0.72	1.58e-1	18.7	154
VLC	MN	HH	0.74	4.22e-2	32.3	355
POPM	GU	HH	0.81	1.35e-1	33.2	54
SARM	GU	EH	0.68	5.35e-2	35.1	357
EQUI	GU	HH	0.77	4.31e-2	39.4	327

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.
(°)

MAIM

HHZ

8.1996e-5

8.7149e-6

3.3342e-6

1.4594e-6

7.2994e-7

1.2647e-4

1.7686e-5

1.1997e-6

1.9113e-7

7.8

MAIM

HHN

9.5709e-5

1.4566e-5

5.8838e-6

2.3159e-6

1.0250e-6

1.9809e-4

2.5931e-5

1.5701e-6

2.6221e-7

7.8

MAIM

HHE

1.8880e-4

1.9819e-5

4.8713e-6

1.5840e-6

7.5166e-7

2.0234e-4

1.9562e-5

1.2888e-6

3.8802e-7

7.8

CME

HNZ

2.7845e-5

5.1888e-6

2.6157e-6

7.5224e-7

3.8264e-7

4.9627e-5

1.2484e-5

5.7019e-7

1.2076e-7

13.8

314

CME

HNN

4.8534e-5

8.1387e-6

5.1058e-6

1.6867e-6

1.0272e-6

1.0727e-4

2.7956e-5

1.7187e-6

1.9634e-7

13.8

314

CME

HNE

6.1203e-5

8.7983e-6

3.8196e-6

1.0590e-6

6.3363e-7

9.5340e-5

1.6985e-5

9.4240e-7

2.3087e-7

13.8

314

CARD

HHZ

3.0565e-5

3.7181e-6

2.2543e-6

1.0629e-6

5.2740e-7

6.7602e-5

1.6269e-5

7.3085e-7

9.9234e-8

18.1

CARD

HHN

9.1823e-5

1.1209e-5

4.4932e-6

1.3255e-6

7.3159e-7

1.6134e-4

2.6508e-5

1.1521e-6

2.1473e-7

18.1

CARD

HHE

9.8569e-5

1.2813e-5

4.3513e-6

1.2918e-6

7.0565e-7

2.1848e-4

2.1021e-5

1.3590e-6

2.9959e-7

18.1

PII

HHZ

1.2499e-5

1.6405e-6

9.8583e-7

4.0309e-7

1.6856e-7

2.4588e-5

3.2489e-6

2.3874e-7

3.9263e-8

18.7

154

PII

HHN

1.4293e-5

1.9045e-6

1.3117e-6

4.3471e-7

1.9337e-7

3.7822e-5

5.5099e-6

2.8497e-7

5.1059e-8

18.7

154

PII

HHE

1.3308e-5

1.6358e-6

1.1197e-6

6.8017e-7

2.9545e-7

3.9787e-5

4.5507e-6

3.4502e-7

5.1462e-8

18.7

154

VLC

HHZ

4.2702e-6

5.5591e-7

2.1400e-7

8.9345e-8

5.5437e-8

7.9689e-6

1.2715e-6

7.0833e-8

1.0473e-8

32.3

355

VLC

HHN

5.8240e-6

8.3178e-7

3.4117e-7

1.4438e-7

6.1980e-8

1.0864e-5

9.6127e-7

9.9006e-8

1.7372e-8

32.3

355

VLC

HHE

5.5729e-6

7.4493e-7

3.2167e-7

9.1583e-8

5.0991e-8

1.3572e-5

1.2227e-6

8.4363e-8

1.6601e-8

32.3

355

POPM

HHZ

8.3884e-6

1.0541e-6

6.3320e-7

1.6607e-7

7.8757e-8

2.0689e-5

2.7855e-6

1.2414e-7

2.3994e-8

33.2

POPM

HHN

1.6401e-5

2.2833e-6

1.2860e-6

2.6778e-7

1.5228e-7

2.8672e-5

4.3994e-6

2.5394e-7

4.7994e-8

33.2

POPM

HHE

9.1446e-6

1.8816e-6

1.1101e-6

3.1433e-7

1.4014e-7

2.3518e-5

4.8097e-6

2.2643e-7

4.1772e-8

33.2

SARM

EHZ

2.5522e-6

2.6290e-7

1.6804e-7

9.5063e-8

3.3102e-8

4.7152e-6

6.7055e-7

3.8496e-8

6.0671e-9

35.1

357

SARM

EHN

2.5611e-6

4.4980e-7

3.1396e-7

2.9049e-7

1.4170e-7

4.8066e-6

1.4870e-6

1.7999e-7

1.6326e-8

35.1

357

SARM

EHE

2.9234e-6

4.0434e-7

2.7025e-7

1.6176e-7

7.6067e-8

5.5176e-6

1.5106e-6

1.0862e-7

1.2714e-8

35.1

357

EQUI

HHZ

4.4113e-6

6.6877e-7

3.3444e-7

1.4133e-7

7.5867e-8

1.2965e-5

1.3558e-6

8.6893e-8

1.3234e-8

39.4

327

EQUI

HHN

6.6142e-6

9.7125e-7

3.9182e-7

1.1424e-7

6.9875e-8

2.6771e-5

1.3153e-6

1.1306e-7

2.1260e-8

39.4

327

EQUI

HHE

4.7730e-6

6.3715e-7

4.0444e-7

1.2178e-7

6.9142e-8

1.1373e-5

1.7229e-6

1.0363e-7

1.7111e-8

39.4

327

*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: Valdarno inferiore , magnitude (ML): 0.8 2026-02-12 07:47:29 (UTC)

MANUAL Location - Area: Valdarno inferiore , magnitude (M_L): 0.8
2026-02-12 07:47:29 (UTC)