Earthquake with magnitude of ML 0.3 on date 17-10-2022 and time 01:01:04 (Italy) in region 1 km W Porcari (LU)

A magnitude ML 0.3 earthquake occured in region: 1 km W Porcari (LU), on

  • 16-10-2022 23:01:04 (UTC)
  • 17-10-2022 01:01:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.8400, 10.6090 at 5 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Porcari LU 1 8845 8845
Capannori LU 3 46252 55097
Montecarlo LU 5 4428 59525
Altopascio LU 6 15481 75006
Lucca LU 9 89046 164052
Chiesina Uzzanese PT 9 4552 168604
Uzzano PT 9 5770 174374
Pescia PT 10 19644 194018
Villa Basilica LU 10 1633 195651
Buggiano PT 11 8825 204476
Ponte Buggianese PT 11 8804 213280
Buti PI 13 5791 219071
Massa e Cozzile PT 14 7983 227054
Montecatini-Terme PT 14 20409 247463
Bientina PI 14 8062 255525
Calci PI 15 6426 261951
Pieve a Nievole PT 16 9266 271217
Vicopisano PI 16 8559 279776
San Giuliano Terme PI 16 31399 311175
Borgo a Mozzano LU 16 6994 318169
Marliana PT 17 3210 321379
Monsummano Terme PT 17 21338 342717
Santa Maria a Monte PI 17 13253 355970
Calcinaia PI 17 12439 368409
Cascina PI 19 45257 413666
Vecchiano PI 19 12189 425855
Castelfranco di Sotto PI 19 13427 439282
Bagni di Lucca LU 19 6161 445443
Serravalle Pistoiese PT 19 11659 457102
Pontedera PI 20 29223 486325
Santa Croce sull'Arno PI 20 14601 500926

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km E of Lucca (89046 inhabitants)
22 Km NE of Pisa (89158 inhabitants)
27 Km W of Pistoia (90315 inhabitants)
29 Km E of Viareggio (62467 inhabitants)
40 Km W of Prato (191150 inhabitants)
40 Km NE of Livorno (159219 inhabitants)
43 Km SE of Massa (69479 inhabitants)
47 Km W of Scandicci (50609 inhabitants)
49 Km SE of Carrara (63133 inhabitants)
53 Km W of Firenze (382808 inhabitants)
69 Km E of La Spezia (93959 inhabitants)
82 Km NW of Siena (53903 inhabitants)
93 Km S of Modena (184973 inhabitants)
94 Km SW of Bologna (386663 inhabitants)
96 Km S of Reggio nell'Emilia (171345 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.3 2022-10-16
23:01:04
43.8398 10.6092 5 2022-10-16
23:17:49
Sala Sismica INGV-Roma 110892141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-10-16 23:01:04 ± 0.14
Latitude 43.8398 ± 0.0045
Longitude 10.6092 ± 0.0125
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 110892141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 970
Semi-minor axis of confidence ellipse (meter) 480
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.11242
Epicentral distance of station farthest from the epicenter (degree) 0.23113
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 110892141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-10-16 23:17:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BDI.HHZ. 2022-10-16T23:01:13.17 0.6 undecidable manual S 357 24.753 101 -0.46 45
GU.POPM.HHZ. 2022-10-16T23:01:10.16 0.1 undecidable manual P 27 25.6521 101 0.06 98
IV.PII.HHZ. 2022-10-16T23:01:10.05 0.1 undecidable manual S 207 14.6742 109 -0.21 96
GU.MAIM.HHZ. 2022-10-16T23:01:09.47 0.1 undecidable manual S 311 12.4764 112 -0.05 100
IV.BDI.HHZ. 2022-10-16T23:01:09.92 0.1 undecidable manual P 357 24.753 101 0 99
IV.PII.HHZ. 2022-10-16T23:01:08.12 0.1 undecidable manual P 207 14.6742 109 0.14 98
GU.MAIM.HHZ. 2022-10-16T23:01:07.84 0.1 undecidable manual P 311 12.4764 112 0.29 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.MAIM.HHE. ML:0.4 0.000033100000000000005 0.16 AML other m 2022-10-16T23:01:09.84
GU.MAIM.HHN. ML:0.3 0.000023800000000000003 0.12 AML other m 2022-10-16T23:01:09.76
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download