Earthquake with magnitude of ML 1.2 on date 06-12-2021 and time 17:46:23 (Italy) in region 1 km NW Castelnuovo di Garfagnana (LU)

A magnitude ML 1.2 earthquake occured in region: 1 km NW Castelnuovo di Garfagnana (LU), on

  • 06-12-2021 16:46:23 (UTC)
  • 06-12-2021 17:46:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.119, 10.403 at 8 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
Castelnuovo di Garfagnana LU 1 5950 5950
Pieve Fosciana LU 2 2414 8364
Castiglione di Garfagnana LU 4 1818 10182
Fosciandora LU 4 602 10784
Villa Collemandina LU 5 1334 12118
Molazzana LU 5 1043 13161
Careggine LU 6 564 13725
Gallicano LU 7 3807 17532
Camporgiano LU 7 2176 19708
San Romano in Garfagnana LU 7 1410 21118
Fabbriche di Vergemoli LU 7 768 21886
Barga LU 8 10034 31920
Vagli Sotto LU 10 939 32859
Piazza al Serchio LU 11 2367 35226
Coreglia Antelminelli LU 12 5215 40441
Sillano Giuncugnano LU 14 1085 41526
Stazzema LU 16 3193 44719
Minucciano LU 17 2102 46821
Pescaglia LU 17 3526 50347
Bagni di Lucca LU 19 6161 56508
Borgo a Mozzano LU 19 6994 63502
Seravezza LU 20 13073 76575
Pievepelago MO 20 2222 78797

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Massa (69479 inhabitants)
25 Km E of Carrara (63133 inhabitants)
30 Km NE of Viareggio (62467 inhabitants)
31 Km N of Lucca (89046 inhabitants)
45 Km N of Pisa (89158 inhabitants)
46 Km E of La Spezia (93959 inhabitants)
46 Km W of Pistoia (90315 inhabitants)
62 Km W of Prato (191150 inhabitants)
63 Km N of Livorno (159219 inhabitants)
67 Km S of Reggio nell'Emilia (171345 inhabitants)
72 Km SW of Modena (184973 inhabitants)
74 Km NW of Scandicci (50609 inhabitants)
76 Km S of Parma (192836 inhabitants)
79 Km W of Firenze (382808 inhabitants)
83 Km SW of Carpi (70699 inhabitants)
86 Km W of Bologna (386663 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2021-12-06
16:46:23
44.1188 10.4033 8 2021-12-06
16:54:21
Sala Sismica INGV-Roma 98215181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-06 16:46:23 ± 0.06
Latitude 44.1188 ± 0.0027
Longitude 10.4033 ± 0.0038
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98215181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 353
Semi-minor axis of confidence ellipse (meter) 192
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 218
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44337
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 98215181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-06 16:54:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RMP.HHZ. 2021-12-06T16:47:44.44 3.0 undecidable manual Sn -0.48 0
IV.ASSB.HHZ. 2021-12-06T16:47:23.63 3.0 undecidable manual Sn 0.64 0
IV.BAG8.EHZ. 2021-12-06T16:47:13.56 3.0 undecidable manual Sn -3.08 0
IV.SARZ.HHZ. 2021-12-06T16:47:06.48 3.0 undecidable manual S -0.32 0
IV.IMOL.HNZ. 2021-12-06T16:46:41.04 3.0 positive manual P -2.47 0
GU.GRAM.HHZ. 2021-12-06T16:46:40.35 0.3 undecidable manual S 327 0.4434 50 0.29 88
IV.PLMA.HHZ. 2021-12-06T16:46:38.32 0.3 undecidable manual S 260 0.4011 50 -0.48 86
IV.ERBM.EHN. 2021-12-06T16:46:35.62 0.3 undecidable manual S 1 0.3004 103 -0.05 96
GU.GSCL.HHZ. 2021-12-06T16:46:34.36 0.3 undecidable manual S 30 0.2662 105 -0.05 96
GU.POPM.HHZ. 2021-12-06T16:46:33.82 0.6 undecidable manual S 106 0.2644 105 -0.5 58
GU.GRAM.HHZ. 2021-12-06T16:46:33.28 0.3 undecidable manual P 327 0.4434 50 0.1 92
GU.FIVI.HNE. 2021-12-06T16:46:33.18 0.3 undecidable manual S 301 0.232 107 0.06 97
GU.MAIM.HHZ. 2021-12-06T16:46:32.61 0.3 undecidable manual S 163 0.2149 108 0.1 96
IV.PLMA.HHZ. 2021-12-06T16:46:32.64 0.3 undecidable manual P 260 0.4011 50 0.19 91
GU.EQUI.HHZ. 2021-12-06T16:46:31.10 0.3 undecidable manual S 285 0.1853 111 -0.34 92
IV.ERBM.EHN. 2021-12-06T16:46:30.72 0.3 undecidable manual P 1 0.3004 103 0.07 95
GU.GSCL.HHZ. 2021-12-06T16:46:30.02 0.3 undecidable manual P 30 0.2662 105 0.1 95
GU.CARD.HHZ. 2021-12-06T16:46:29.16 0.3 undecidable manual S 149 0.1088 123 0.37 93
IV.BDI.HHZ. 2021-12-06T16:46:29.95 0.3 undecidable manual S 112 0.1493 116 -0.19 96
GU.POPM.HHZ. 2021-12-06T16:46:29.66 0.3 undecidable manual P 106 0.2644 105 -0.2 93
GU.FIVI.HNE. 2021-12-06T16:46:29.27 0.3 undecidable manual P 301 0.232 107 0.1 96
GU.EQUI.HHZ. 2021-12-06T16:46:28.21 0.3 undecidable manual P 285 0.1853 111 0.01 99
GU.MAIM.HHZ. 2021-12-06T16:46:28.93 0.3 undecidable manual P 163 0.2149 108 0.11 96
IV.BDI.HHZ. 2021-12-06T16:46:27.53 0.3 undecidable manual P 112 0.1493 116 0.08 98
GU.CARD.HHZ. 2021-12-06T16:46:26.66 0.3 undecidable manual P 149 0.1088 123 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CARD.HHE. ML:1.1 0.000147 1.32 AML other m 2021-12-06T16:46:29.98
IV.BDI.HHE. ML:1 0.00010415 1.04 AML other m 2021-12-06T16:46:30.82
GU.CARD.HHN. ML:1.1 0.000148 0.84 AML other m 2021-12-06T16:46:30.05
IV.BDI.HHN. ML:1.1 0.000121 0.56 AML other m 2021-12-06T16:46:30.75
GU.GSCL.HHN. ML:1.2 9.245E-5 0.24 AML other m 2021-12-06T16:46:34.48
GU.POPM.HHN. ML:1.5 0.000152 1.24 AML other m 2021-12-06T16:46:34.93
GU.POPM.HHE. ML:1.5 0.000157 0.12 AML other m 2021-12-06T16:46:35.18
GU.GSCL.HHE. ML:1.2 7.605E-5 0.68 AML other m 2021-12-06T16:46:36.14
GU.GRAM.HHN. ML:1.6 0.0001159 1.66 AML other m 2021-12-06T16:46:40.04
GU.GRAM.HHE. ML:1.7 0.0001365 1.06 AML other m 2021-12-06T16:46:41.00
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