RSNI - Manually revised location

MANUAL Location - Area: Appennino pistoiese , magnitude (M_L): 0.6
2026-09-08 20:28:36 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-09 09:58:33

Earthquake info - Manual location

Event - ID :	260908202655
Magnitude (M_L) :	0.6 +/- 0.2
Origin Time :	2026-09-08 20:28:36.101 (UTC)
Location :	Latitude: 44.184 N, Longitude: 10.937 E
Area :	Appennino pistoiese
Depth (km) :	16.74
Distances (km) :	1.6 --- Gaggio Montano 4.2 --- Lizzano in Belvedere 4.3 --- Porretta Terme 8.4 --- Castel di Casio 9.4 --- Granaglione 9.7 --- Montese 10.2 --- Sambuca Pistoiese 11.6 --- Fanano 12.0 --- Castel d Aiano 12.2 --- Camugnano 14.2 --- Sestola 17.0 --- Cutigliano 17.9 --- Vergato 18.2 --- San Marcello Pistoiese 18.5 --- Castiglione dei Pepoli 18.8 --- Pavullo nel Frignano 18.8 --- Zocca 18.9 --- Montecreto 19.2 --- Grizzana Morandi 21.5 --- Lama Mocogno

Quality location estimate: Erh: 1.2 km, Erz: 1.2 km, Nf: 16, Gap: 203 °, Rms: 0.12

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.
ZCCA	IV	2026-09-08 20:28:39.412	0.026	1	-2.14	0.00	2026-09-08 20:28:42.963	0.040	0	-2.88	0.00	25.7
POPM	GU	2026-09-08 20:28:41.135	0.035	1	0.03	1.69	2026-09-08 20:28:44.832	0.040	0	-0.05	1.73	27.2
BDI	IV	2026-09-08 20:28:42.407	0.040	1	-0.12	1.48	2026-09-08 20:28:47.261	0.040	0	-0.08	1.57	35.0
CARD	GU	2026-09-08 20:28:43.491	0.179	7	-0.50	0.39	2026-09-08 20:28:49.859	0.040	0	0.07	1.32	43.8
SARM	GU	2026-09-08 20:28:44.340	0.069	3	-0.14	1.37	2026-09-08 20:28:49.878	0.040	0	-0.78	0.10	46.3
VLC	MN	2026-09-08 20:28:44.610	0.046	2	0.05	1.54	2026-09-08 20:28:50.783	0.040	0	0.02	1.43	47.3
MAIM	GU	2026-09-08 20:28:44.927	0.020	0	0.01	1.73	2026-09-08 20:28:52.018	0.040	0	0.70	0.01	49.6
PII	IV	2026-09-08 20:28:47.157	0.020	0	-0.40	0.36	2026-09-08 20:28:55.698	0.040	0	-0.06	1.29	63.3

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
ZCCA	IV	HH	0.78	1.00e-1	25.7	10
POPM	GU	HH	0.72	1.60e-1	27.2	223
CARD	GU	HH	0.98	5.65e-2	43.8	244
SARM	GU	EH	0.19	9.87e-3	46.3	270
VLC	MN	HH	0.63	1.53e-2	47.3	267
MAIM	GU	HH	0.52	1.37e-2	49.6	230
PII	IV	HH	0.62	1.18e-2	63.3	213

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.
(°)

ZCCA

HHZ

6.9288e-6

1.1079e-6

4.6851e-7

3.5179e-7

1.7240e-7

6.4883e-6

2.7225e-6

2.5885e-7

1.8111e-8

25.7

ZCCA

HHN

1.0232e-5

1.2360e-6

7.1952e-7

4.9179e-7

1.8656e-7

7.3755e-6

4.8094e-6

2.6208e-7

2.5417e-8

25.7

ZCCA

HHE

5.6788e-6

7.0013e-7

8.1823e-7

5.3355e-7

2.1920e-7

5.6322e-6

4.6739e-6

2.3893e-7

2.5800e-8

25.7

POPM

HHZ

1.0657e-5

1.2690e-6

8.6711e-7

2.8823e-7

1.4471e-7

2.5156e-5

4.9810e-6

2.1268e-7

3.4664e-8

27.2

223

POPM

HHN

1.1139e-5

1.9949e-6

1.4386e-6

4.5234e-7

2.3703e-7

3.4387e-5

8.7062e-6

3.7488e-7

6.1232e-8

27.2

223

POPM

HHE

1.2654e-5

1.9815e-6

1.1990e-6

2.7563e-7

1.6312e-7

2.2573e-5

7.4363e-6

2.5747e-7

4.4200e-8

27.2

223

BDI

HHZ

6.6302e-6

7.8496e-7

5.1862e-7

1.4863e-7

8.3455e-8

1.4305e-5

4.0407e-6

1.3109e-7

2.0900e-8

35.0

244

BDI

HHN

8.8111e-6

1.5602e-6

1.2109e-6

4.1613e-7

1.9467e-7

2.2253e-5

8.1336e-6

3.0329e-7

4.9187e-8

35.0

244

BDI

HHE

7.3702e-6

1.2170e-6

7.2006e-7

1.7458e-7

9.5401e-8

2.8983e-5

3.1680e-6

1.4113e-7

2.6929e-8

35.0

244

CARD

HHZ

2.4692e-6

3.7068e-7

2.2343e-7

6.2371e-8

2.7502e-8

9.0563e-6

1.1816e-6

4.5955e-8

7.7370e-9

43.8

244

CARD

HHN

6.7778e-6

1.0766e-6

5.1805e-7

1.1558e-7

6.1784e-8

1.9693e-5

2.7362e-6

9.9084e-8

2.2002e-8

43.8

244

CARD

HHE

5.9512e-6

1.0823e-6

4.9458e-7

1.0904e-7

6.5210e-8

2.5829e-5

1.4019e-6

1.1283e-7

2.3525e-8

43.8

244

SARM

EHZ

1.3822e-6

1.3584e-7

8.1986e-8

2.8717e-8

1.3008e-8

2.0622e-6

5.4867e-7

1.7292e-8

3.0367e-9

46.3

270

SARM

EHN

1.1740e-6

1.8438e-7

9.8817e-8

6.3291e-8

2.1778e-8

2.1368e-6

3.0276e-7

2.6029e-8

4.4619e-9

46.3

270

SARM

EHE

8.1485e-7

1.3017e-7

9.0619e-8

5.8877e-8

2.2885e-8

2.1566e-6

5.4487e-7

3.0847e-8

3.2250e-9

46.3

270

VLC

HHZ

2.4161e-6

2.6576e-7

9.8582e-8

4.5148e-8

1.9228e-8

2.5475e-6

5.4555e-7

2.1125e-8

3.8390e-9

47.3

267

VLC

HHN

1.7275e-6

1.6838e-7

1.3870e-7

5.6249e-8

2.4618e-8

2.9034e-6

9.2844e-7

3.2930e-8

4.5554e-9

47.3

267

VLC

HHE

1.7482e-6

1.7952e-7

1.4949e-7

5.3521e-8

2.5368e-8

2.8845e-6

8.1159e-7

3.6612e-8

4.4636e-9

47.3

267

MAIM

HHZ

5.5967e-7

1.2736e-7

1.0373e-7

3.9599e-8

1.8995e-8

1.4547e-6

7.3305e-7

2.4721e-8

3.9720e-9

49.6

230

MAIM

HHN

7.8423e-7

1.6747e-7

1.2458e-7

5.7163e-8

2.5267e-8

2.7494e-6

7.5915e-7

2.9567e-8

5.2654e-9

49.6

230

MAIM

HHE

9.9989e-7

1.3161e-7

8.7095e-8

3.9914e-8

1.8663e-8

2.8380e-6

6.4213e-7

2.1827e-8

3.5149e-9

49.6

230

PII

HHZ

4.7267e-7

1.3760e-7

9.7979e-8

3.4485e-8

1.5406e-8

1.6952e-6

5.2379e-7

2.0013e-8

3.6593e-9

63.3

213

PII

HHN

5.1665e-7

1.3328e-7

1.0755e-7

4.3382e-8

1.7031e-8

2.1743e-6

6.2441e-7

2.3875e-8

3.3974e-9

63.3

213

PII

HHE

5.7358e-7

1.2788e-7

1.2445e-7

5.4729e-8

1.9575e-8

2.5093e-6

6.7064e-7

2.8161e-8

3.9460e-9

63.3

213

*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: Appennino pistoiese , magnitude (ML): 0.6 2026-09-08 20:28:36 (UTC)

MANUAL Location - Area: Appennino pistoiese , magnitude (M_L): 0.6
2026-09-08 20:28:36 (UTC)