AUTOMATIC Location - Area: Zona Chianti , magnitude (ML): 2.2
2025-08-31 06:01:11 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-31 06:05:40

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Earthquake info - RsniPicker2 automatic location
Event - ID :250831060052
Magnitude (ML) :2.2 +/- 0.2
Origin Time :2025-08-31 06:01:11.15 (UTC)
Location : Latitude: 43.611 N, Longitude: 11.077 E
Area :Zona Chianti
Depth (km) :10.98
Distances (km) : 3.7 --- Montespertoli (FI)
7.6 --- Certaldo (FI)
8.7 --- Castelfiorentino (FI)
9.5 --- Tavarnelle Val di Pesa (FI)
10.2 --- San Casciano in Val di Pesa (FI)
10.8 --- Barberino Val d Elsa (FI)
12.6 --- Gambassi Terme (FI)
14.3 --- Montelupo Fiorentino (FI)
14.7 --- Montaione (FI)
16.1 --- Empoli (FI)
16.1 --- San Gimignano (SI)
16.5 --- Poggibonsi (SI)
16.6 --- Impruneta (FI)
16.8 --- Capraia e Limite (FI)
17.9 --- Lastra a Signa (FI)
18.5 --- Scandicci (FI)
19.1 --- Signa (FI)
19.6 --- Greve in Chianti (FI)
19.9 --- San Miniato (PI)
21.2 --- Colle di Val d Elsa (SI)

Quality location estimate:
Erh: 1 km, Erz: 1.9 km, Nf: 20, Gap: 154°, Rms: 0.188 s
Stazioni validate: 11


RsniPicker2 - Automatic location results
Station Net P arrival times P pick
err		 P pick
weight		 P res Nll
weight		 S arrival time S pick
err		 S pick
weight		 S res Nll
weight		 Dist.
CSNTIV2025-08-31 06:01:16.5590.0130-0.011.852025-08-31 06:01:20.5700.07710.151.4325.5
RUFIIV2025-08-31 06:01:19.6500.02200.011.802025-08-31 06:01:25.4690.1332-0.450.4144.3
PIIIV2025-08-31 06:01:19.9400.0240-0.031.702025-08-31 06:01:25.2640.1472-1.130.1747.4
CARDGU2025-08-31 06:01:23.0900.0340-0.051.532025-08-31 06:01:31.0490.2192-0.880.2567.3
VLCMN2025-08-31 06:01:25.9900.04200.141.41--:---.-----.---.-- 83.1
SARMGU2025-08-31 06:01:26.3890.04200.251.042025-08-31 06:01:37.2700.25320.130.9884.3
GSCLGU2025-08-31 06:01:28.1000.0460-0.011.462025-08-31 06:01:40.0400.5503-0.240.6991.7
EQUIGU2025-08-31 06:01:28.2600.15920.191.142025-08-31 06:01:38.6300.5573-1.810.0996.9
ERBMIV2025-08-31 06:01:30.6200.07210.191.19--:---.-----.---.-- 105.0
PLMAIV2025-08-31 06:01:30.4100.05510.061.402025-08-31 06:01:43.7000.4122-0.750.44110.1
GRAMGU2025-08-31 06:01:34.0600.06411.150.01--:---.-----.---.-- 127.4
MSSAIV2025-08-31 06:01:35.6190.0741-0.171.02--:---.-----.---.-- 147.8


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth Used
PII IV2.208.20e-147.4286SI
CARD GU2.203.93e-167.3314SI
SARM GU2.303.82e-184.3320SI
GSCL GU2.403.12e-191.7335SI
EQUI GU2.201.58e-196.9310SI
ERBM IV1.805.76e-2105.0330SI
PLMA IV2.201.15e-1110.1297SI
GRAM GU2.402.75e-1127.4321SI
MSSA IV2.206.59e-2147.8303SI


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)		 PGV
(m/s)		 PGD
(m)		 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.
(°)
PII IVHHZ4.0833e-51.0979e-50.0000e+07.6356e-61.2264e-51.6896e-58.1936e-52.4017e-51.3869e-62.2896e-747.4286
PII IVHHN4.0623e-51.0178e-50.0000e+08.7969e-61.4403e-51.4403e-51.4363e-45.9749e-51.8109e-62.6044e-747.4286
PII IVHHE4.5439e-51.2442e-50.0000e+06.8508e-61.0824e-51.4514e-51.5261e-43.5981e-51.1366e-61.6433e-747.4286
CARD GUHHZ2.1335e-53.3317e-60.0000e+02.0813e-63.8040e-65.4088e-68.6525e-57.4784e-66.0052e-78.9001e-867.3314
CARD GUHHN3.5756e-56.1419e-60.0000e+05.2460e-68.5898e-68.5898e-61.4364e-41.9416e-59.8358e-71.3863e-767.3314
CARD GUHHE3.3364e-56.3082e-60.0000e+04.9254e-68.2628e-61.1482e-51.6696e-41.8178e-51.0483e-61.5296e-767.3314
VLC MNHHZ5.2788e-68.9031e-70.0000e+09.0374e-71.6277e-62.1899e-62.2499e-52.9883e-63.1876e-73.4831e-883.1-1
VLC MNHHN3.8688e-61.0178e-60.0000e+01.0164e-61.8859e-61.8859e-61.1669e-55.0834e-65.9522e-74.3726e-883.1-1
VLC MNHHE4.4177e-69.0593e-70.0000e+01.0362e-61.8627e-62.4675e-61.3665e-56.5984e-67.2156e-74.7085e-883.1-1
SARM GUEHZ2.4892e-61.1883e-60.0000e+01.0917e-62.1499e-62.8223e-66.2988e-68.3854e-64.3225e-73.8015e-884.3320
SARM GUEHN4.2179e-62.0662e-60.0000e+01.6274e-64.3133e-64.3133e-61.4113e-57.5794e-61.0645e-69.3622e-884.3320
SARM GUEHE3.9021e-61.3492e-60.0000e+01.3018e-62.7354e-63.5521e-67.5156e-68.7159e-66.2457e-75.0631e-884.3320
GSCL GUHHZ1.7137e-67.8920e-70.0000e+05.9518e-71.2881e-61.7242e-66.0611e-62.4100e-65.5321e-72.5875e-891.7335
GSCL GUHHN3.9785e-61.8185e-60.0000e+01.9097e-63.6378e-63.6378e-69.2768e-61.0743e-51.6070e-66.9434e-891.7335
GSCL GUHHE4.7948e-62.2127e-60.0000e+02.2869e-63.9230e-65.5551e-61.0386e-51.3974e-51.8154e-69.6340e-891.7335
EQUI GUHHZ4.7472e-69.4750e-70.0000e+01.0505e-61.8635e-62.4980e-61.4538e-54.9284e-66.3405e-74.2247e-896.9310
EQUI GUHHN6.2504e-61.3631e-60.0000e+01.4953e-62.5892e-62.5892e-62.4898e-56.5604e-67.4946e-74.7637e-896.9310
EQUI GUHHE6.3581e-61.5338e-60.0000e+01.4105e-62.4321e-63.2731e-62.1754e-56.4078e-64.4670e-74.3820e-896.9310
PLMA IVHHZ2.5751e-67.9235e-70.0000e+05.2382e-71.0714e-61.5546e-67.8936e-62.6649e-64.9618e-76.4098e-8110.1297
PLMA IVHHN4.6664e-69.5379e-70.0000e+01.0469e-61.8572e-61.8572e-62.1938e-57.2991e-66.6185e-76.2213e-8110.1297
PLMA IVHHE3.3797e-67.7220e-70.0000e+08.9938e-71.7562e-62.3406e-61.4452e-54.2513e-67.1012e-74.5462e-8110.1297
GRAM GUHHZ5.5390e-61.4835e-60.0000e+01.2421e-62.0296e-62.7338e-61.5437e-56.7192e-62.0954e-73.6504e-8127.4321
GRAM GUHHN4.2224e-61.2602e-60.0000e+01.2629e-62.1939e-62.1939e-69.2293e-61.0894e-53.5813e-74.4595e-8127.4321
GRAM GUHHE4.2957e-61.9277e-60.0000e+02.0998e-63.6288e-64.8565e-67.2177e-61.5031e-51.0103e-69.4334e-8127.4321
MSSA IVHHZ3.6888e-78.8213e-80.0000e+09.1312e-81.5759e-72.3723e-79.2277e-75.9054e-79.3500e-81.3220e-8147.8303
MSSA IVHHN5.1911e-71.3430e-70.0000e+09.6973e-82.0469e-72.0469e-71.7274e-64.6574e-79.3443e-89.2768e-9147.8303
MSSA IVHHE4.0336e-71.1295e-70.0000e+07.7378e-81.5537e-72.3811e-78.9879e-73.4668e-76.9413e-88.1302e-9147.8303
*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)

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