MANUAL Location - Area: Colline Metallifere , magnitude (ML): 2.5
2025-11-26 19:06:58 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-11-27 08:37:43

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Earthquake info - Manual location
Event - ID :251126190525
Magnitude (ML) :2.5 +/- 0.2
Origin Time :2025-11-26 19:06:58.555 (UTC)
Location : Latitude: 43.296 N, Longitude: 10.977 E
Area :Colline Metallifere
Depth (km) :7.70
Distances (km) : 6.6 --- Radicondoli
7.5 --- Casole d Elsa
8.3 --- Pomarance
11.2 --- Castelnuovo di Val di Cecina
15.2 --- Volterra
18.0 --- Chiusdino
18.6 --- Montieri
18.7 --- Colle di Val d Elsa
19.3 --- Monterotondo Marittimo
19.9 --- San Gimignano
20.4 --- Sovicille
21.2 --- Montecatini Val di Cecina
22.7 --- Monteriggioni
23.9 --- Poggibonsi
23.9 --- Monticiano
24.9 --- Monteverdi Marittimo
27.2 --- Gambassi Terme
27.8 --- Guardistallo
28.1 --- Massa Marittima
28.2 --- Lajatico

Quality location estimate: Erh: 1.9 km, Erz: 2.1 km, Nf: 35, Gap: 202 °, Rms: 0.30


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.
CSNTIV2025-11-26 19:07:05.3700.01600.021.732025-11-26 19:07:09.8330.0932-0.331.2033.0
OSSCIV2025-11-26 19:07:05.7360.02000.500.582025-11-26 19:07:10.8200.04000.880.2134.3
PIIIV2025-11-26 19:07:09.4500.0301-0.151.632025-11-26 19:07:17.2470.6819-0.240.8960.2
RUFIIV2025-11-26 19:07:12.4200.0412-0.031.702025-11-26 19:07:22.2310.0400-0.161.4774.3
MAIMGU2025-11-26 19:07:12.6900.03910.051.612025-11-26 19:07:21.3200.5619-1.380.2879.3
POPMGU2025-11-26 19:07:14.1900.04220.510.662025-11-26 19:07:25.3290.04000.740.4685.5
CARDGU2025-11-26 19:07:14.5600.04520.011.632025-11-26 19:07:25.9470.0400-0.051.4590.7
CMEIT2025-11-26 19:07:14.4020.0200-0.351.162025-11-26 19:07:26.4130.04000.051.4191.5
LMDIV2025-11-26 19:07:17.7100.0522-0.371.122025-11-26 19:07:30.8200.5239-1.750.15105.1
VLCMN2025-11-26 19:07:17.4200.05320.141.382025-11-26 19:07:30.2120.0400-0.580.79107.3
SARMGU2025-11-26 19:07:17.4450.0200-0.211.482025-11-26 19:07:33.0850.04001.630.04109.3
EQUIGU2025-11-26 19:07:19.0300.05820.181.302025-11-26 19:07:32.4730.0400-1.040.34117.4
ZCCAIV2025-11-26 19:07:19.9700.02000.011.542025-11-26 19:07:38.4370.04002.590.01117.5
GSCLGU2025-11-26 19:07:20.5300.06020.201.262025-11-26 19:07:34.9540.0400-1.120.30121.6
PLMAIV2025-11-26 19:07:19.6670.0200-0.201.462025-11-26 19:07:38.4740.04003.270.00123.4
ERBMIV2025-11-26 19:07:22.6600.08540.410.902025-11-26 19:07:38.8860.0400-0.880.50133.1
MORSIFR2025-11-26 19:07:21.3570.0200-0.061.542025-11-26 19:07:37.8520.0400-0.550.85136.6
GRAMGU2025-11-26 19:07:24.1720.0200-0.031.482025-11-26 19:07:43.7930.04000.830.48151.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
OSSC IVHH2.694.72e+034.341
PII IVHH2.521.04e+060.2323
MAIM GUHH2.424.03e-179.3331
POPM GUHH2.541.02e+085.5348
CARD GUHH2.574.68e-190.7334
CME ITHN2.675.84e-191.5324
VLC MNHH2.481.80e-1107.3334
SARM GUEH2.593.79e-1109.3335
EQUI GUHH2.341.47e-1117.4326
ZCCA IVHH2.502.12e-1117.5360
GSCL GUHH2.703.06e-1121.6345
PLMA IVHH2.219.41e-2123.4313
ERBM IVEH2.511.57e-1133.1340
MORSIFRHH2.237.69e-2136.6254
GRAM GUHH2.713.22e-1151.8332


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.
(°)
OSSC IVHHZ1.4824e-42.7174e-52.0171e-51.4359e-57.3328e-62.5460e-41.1501e-49.9186e-68.2754e-734.341
OSSC IVHHN1.8046e-45.4156e-53.8799e-52.0383e-51.1319e-55.9318e-42.2609e-41.6364e-51.2118e-634.341
OSSC IVHHE1.8006e-45.0076e-54.0784e-52.0013e-51.0332e-54.3073e-41.9926e-41.6141e-51.2857e-634.341
PII IVHHZ1.4577e-54.5511e-63.8358e-61.8026e-67.5921e-74.7868e-52.9477e-58.8364e-71.1079e-760.2323
PII IVHHN2.3421e-56.4811e-67.9216e-63.7501e-61.3892e-66.0395e-58.9640e-51.8022e-62.3225e-760.2323
PII IVHHE3.4413e-59.8567e-68.5164e-63.7823e-61.4873e-66.9515e-55.6364e-52.0633e-62.8595e-760.2323
MAIM GUHHZ1.4544e-53.2597e-62.9220e-62.2344e-61.0463e-64.3343e-51.4502e-51.2528e-61.1702e-779.3331
MAIM GUHHN1.4447e-52.8405e-62.4090e-62.6485e-62.0489e-66.7017e-51.2502e-52.7951e-61.2092e-779.3331
MAIM GUHHE1.4293e-53.4961e-62.9184e-62.2711e-69.2279e-74.7262e-51.5286e-51.1758e-61.0466e-779.3331
POPM GUHHZ3.6300e-51.0894e-57.1176e-63.1304e-61.9667e-61.0082e-44.1164e-52.1914e-62.4144e-785.5348
POPM GUHHN2.3996e-51.1210e-58.1802e-65.6714e-63.1489e-69.0952e-54.9172e-52.7203e-63.2956e-785.5348
POPM GUHHE2.3697e-56.2718e-67.0145e-62.8626e-61.3467e-65.3257e-53.8358e-51.6272e-62.0908e-785.5348
CARD GUHHZ1.3256e-53.2307e-63.1234e-62.2765e-67.3524e-74.8201e-51.3082e-59.6741e-71.2377e-790.7334
CARD GUHHN2.4047e-54.3080e-64.0432e-62.5962e-61.0985e-68.1953e-52.6442e-51.4257e-61.5139e-790.7334
CARD GUHHE2.1207e-54.4477e-63.9147e-62.2623e-61.2965e-61.0835e-41.6613e-51.4189e-61.2492e-790.7334
CME ITHNZ1.1694e-52.9524e-62.7640e-61.4889e-65.8754e-72.6793e-51.9060e-57.1189e-78.6443e-891.5324
CME ITHNN2.0690e-56.2432e-65.6068e-63.4071e-61.2261e-64.2302e-52.6958e-51.4203e-61.9208e-791.5324
CME ITHNE1.7158e-53.9910e-64.2951e-62.8364e-69.4148e-75.2519e-52.5287e-51.1543e-61.1198e-791.5324
VLC MNHHZ8.0684e-62.1139e-61.9066e-61.8122e-69.5617e-72.0879e-59.8106e-69.1648e-78.1158e-8107.3334
VLC MNHHN7.2973e-61.2997e-61.2274e-61.1392e-67.9632e-71.6896e-57.4512e-61.0412e-64.8182e-8107.3334
VLC MNHHE5.5140e-61.2307e-61.0585e-69.6939e-75.7169e-71.4394e-55.1080e-67.4897e-75.3059e-8107.3334
SARM GUEHZ3.6213e-61.8685e-61.4596e-61.5930e-61.0211e-61.2206e-59.0590e-61.1030e-69.0670e-8109.3335
SARM GUEHN5.4651e-63.3273e-62.2054e-63.6409e-62.0714e-61.3891e-51.1112e-52.0951e-61.3269e-7109.3335
SARM GUEHE4.3160e-62.1954e-61.7541e-62.4844e-61.4760e-61.0092e-57.5829e-61.8442e-69.2296e-8109.3335
EQUI GUHHZ3.5189e-61.0895e-61.0869e-68.3243e-72.9361e-71.1889e-56.3961e-63.6265e-74.1225e-8117.4326
EQUI GUHHN4.1378e-61.1156e-69.9499e-77.1082e-73.6219e-71.4757e-54.4653e-63.7302e-73.5920e-8117.4326
EQUI GUHHE3.3709e-69.8841e-79.1503e-78.6376e-74.6504e-71.3421e-55.3171e-64.9788e-74.0034e-8117.4326
ZCCA IVHHZ4.6040e-61.9555e-62.2453e-61.5717e-68.0670e-71.3686e-52.1040e-59.0433e-76.8787e-8117.5360
ZCCA IVHHN4.8073e-61.5110e-61.8915e-61.6365e-67.2093e-79.5267e-61.5918e-58.5785e-76.0490e-8117.5360
ZCCA IVHHE4.5956e-62.0141e-62.4283e-62.1359e-68.5286e-77.9816e-61.6806e-59.9191e-77.4152e-8117.5360
GSCL GUHHZ4.5061e-61.1575e-61.2960e-69.8219e-76.7567e-71.2938e-56.7715e-66.8946e-75.3040e-8121.6345
GSCL GUHHN6.2085e-62.3780e-61.9395e-61.9683e-61.2557e-61.3665e-59.2952e-61.9426e-61.0879e-7121.6345
GSCL GUHHE4.6330e-62.0886e-62.0291e-61.5682e-66.8091e-79.9042e-61.1574e-59.2764e-76.9322e-8121.6345
PLMA IVHHZ2.0265e-65.4584e-75.5363e-74.4956e-72.0312e-78.9269e-63.6076e-62.2076e-71.7147e-8123.4313
PLMA IVHHN2.5531e-69.3132e-77.9761e-75.1290e-71.9803e-77.0509e-66.1805e-62.4446e-72.5712e-8123.4313
PLMA IVHHE1.8268e-65.7021e-76.0632e-74.8354e-71.8809e-76.8807e-64.2261e-62.2556e-71.8615e-8123.4313
ERBM IVEHZ2.4144e-69.0401e-78.2442e-79.4753e-74.3279e-71.0504e-54.3173e-65.1369e-74.2197e-8133.1340
ERBM IVEHN2.3303e-61.2738e-61.0223e-69.6376e-76.7611e-76.7646e-63.9150e-61.0102e-69.1768e-8133.1340
ERBM IVEHE2.9948e-66.3035e-76.5885e-76.1070e-73.5413e-79.4989e-64.3145e-63.1602e-72.4000e-8133.1340
MORSIFRHHZ1.0509e-64.3964e-74.0729e-73.2313e-71.5203e-72.3803e-62.8587e-61.6596e-71.4769e-8136.6254
MORSIFRHHN1.1113e-64.4803e-74.5739e-73.8958e-71.8064e-72.2966e-62.2478e-61.8868e-71.7820e-8136.6254
MORSIFRHHE1.0865e-63.3626e-73.8012e-72.3428e-71.1669e-72.7386e-62.6503e-61.2437e-71.0575e-8136.6254
GRAM GUHHZ3.7979e-61.3551e-61.3308e-69.1775e-74.2365e-76.5081e-65.8085e-65.4047e-74.4743e-8151.8332
GRAM GUHHN3.4466e-61.4039e-61.5099e-61.0866e-65.4294e-75.9263e-61.0444e-55.9046e-74.6015e-8151.8332
GRAM GUHHE5.0290e-62.1416e-62.1916e-61.1066e-64.6117e-79.0930e-61.6477e-55.6199e-77.1054e-8151.8332
*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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