Earthquake with magnitude of ML 0.9 on date 26-10-2021 and time 18:44:34 (UTC) in region 6 km NE Castiglione di Garfagnana (LU)

A magnitude ML 0.9 earthquake occured in region: 6 km NE Castiglione di Garfagnana (LU), on

  • 26-10-2021 18:44:34 (UTC)
  • 26-10-2021 20:44:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.192, 10.468 at 10 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
Castiglione di Garfagnana LU 6 1818 1818
Villa Collemandina LU 7 1334 3152
Pieve Fosciana LU 8 2414 5566
Fosciandora LU 8 602 6168
Castelnuovo di Garfagnana LU 10 5950 12118
San Romano in Garfagnana LU 10 1410 13528
Camporgiano LU 11 2176 15704
Pievepelago MO 12 2222 17926
Barga LU 13 10034 27960
Piazza al Serchio LU 13 2367 30327
Molazzana LU 14 1043 31370
Sillano Giuncugnano LU 14 1085 32455
Careggine LU 14 564 33019
Frassinoro MO 14 1926 34945
Fiumalbo MO 14 1280 36225
Gallicano LU 15 3807 40032
Coreglia Antelminelli LU 15 5215 45247
Riolunato MO 16 712 45959
Abetone PT 17 621 46580
Fabbriche di Vergemoli LU 17 768 47348
Vagli Sotto LU 17 939 48287
Villa Minozzo RE 19 3750 52037

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Massa (69479 inhabitants)
32 Km E of Carrara (63133 inhabitants)
39 Km N of Lucca (89046 inhabitants)
40 Km NE of Viareggio (62467 inhabitants)
46 Km NW of Pistoia (90315 inhabitants)
52 Km E of La Spezia (93959 inhabitants)
53 Km N of Pisa (89158 inhabitants)
58 Km S of Reggio nell'Emilia (171345 inhabitants)
61 Km NW of Prato (191150 inhabitants)
62 Km SW of Modena (184973 inhabitants)
69 Km S of Parma (192836 inhabitants)
72 Km N of Livorno (159219 inhabitants)
74 Km SW of Carpi (70699 inhabitants)
75 Km NW of Scandicci (50609 inhabitants)
77 Km W of Bologna (386663 inhabitants)
79 Km NW of Firenze (382808 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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2021-10-26
18:44:34
44.1915 10.4683 11 2021-10-26
18:51:22
Sala Sismica INGV-Roma 97008381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 18:44:34 ± 0.1
Latitude 44.1915 ± 0.0045
Longitude 10.4683 ± 0.0100
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97008381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 777
Semi-minor axis of confidence ellipse (meter) 437
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 287
Circular confidence region, given by single value of horizontal uncertainty (meter) 780
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.27879
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 97008381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 18:51:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SRES.HHZ. 2021-10-26T18:45:54.65 3.0 undecidable manual Sg -0.01 0
IX.NSC3.EHZ.02 2021-10-26T18:45:52.45 3.0 positive manual Pn 4.98 0
IV.VAGA.HNZ. 2021-10-26T18:45:48.77 3.0 negative manual Pg 13.33 0
IV.TST02.HHZ. 2021-10-26T18:45:42.65 3.0 undecidable manual Pg 11.36 0
IV.VVLD.HHZ. 2021-10-26T18:45:35.89 3.0 undecidable manual Pg 9.31 0
MN.TRI.HHZ. 2021-10-26T18:45:12.06 3.0 undecidable manual Pn -1.75 0
IV.FIR.HHZ. 2021-10-26T18:45:05.14 3.0 undecidable manual S -6.8 0
IV.PE3.EHZ. 2021-10-26T18:45:03.11 3.0 negative manual Pg 0.85 0
IV.MOCL.EHZ. 2021-10-26T18:44:48.89 3.0 undecidable manual P 0.11 0
GU.RNCA.HHZ. 2021-10-26T18:44:47.25 3.0 undecidable manual S -1.36 0
GU.MAIM.HHE. 2021-10-26T18:44:45.17 0.1 undecidable manual S 177 0.2788 50 -0.13 96
GU.POPM.HHZ. 2021-10-26T18:44:44.51 0.6 undecidable manual S 125 0.2536 50 -0.05 49
IV.EQUI.HHZ. 2021-10-26T18:44:43.48 0.3 undecidable manual S 100
IV.CADC.EHZ. 2021-10-26T18:44:41.78 3.0 negative manual P -0.92 0
IV.BDI.HHZ. 2021-10-26T18:44:41.55 0.6 undecidable manual S 145 0.1574 121 0 51
GU.CARD.HHZ. 2021-10-26T18:44:41.62 0.3 undecidable manual S 177 0.1655 120 -0.19 73
GU.GSCL.HHE. 2021-10-26T18:44:41.92 0.3 undecidable manual S 28 0.1808 118 -0.39 70
GU.MAIM.HHE. 2021-10-26T18:44:40.64 0.1 undecidable manual P 177 0.2788 50 -0.08 97
GU.POPM.HHZ. 2021-10-26T18:44:40.52 0.6 negative manual P 125 0.2536 50 0.23 47
GU.GSCL.HHE. 2021-10-26T18:44:39.18 0.1 undecidable manual P 28 0.1808 118 0.19 97
GU.SARM.EHE. 2021-10-26T18:44:38.40 0.1 undecidable manual S 261 0.0486 153 -0.17 100
IV.BDI.HHZ. 2021-10-26T18:44:38.79 0.3 undecidable manual P 145 0.1574 121 0.24 72
GU.CARD.HHZ. 2021-10-26T18:44:38.95 1.0 undecidable manual P 177 0.1655 120 0.25 24
GU.SARM.EHE. 2021-10-26T18:44:37.09 0.1 undecidable manual P 261 0.0486 153 0.26 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BDI.HHN. ML:0.7 4.13E-5 0.12 AML other m 2021-10-26T18:44:41.73
IV.BDI.HHE. ML:0.8 5.405E-5 0.12 AML other m 2021-10-26T18:44:41.88
GU.POPM.HHE. ML:0.8 3.19E-5 0.5 AML other m 2021-10-26T18:44:45.23
GU.POPM.HHN. ML:0.8 3.615E-5 1.56 AML other m 2021-10-26T18:44:45.11
IV.MOCL.EHE. ML:1.4 5.71E-5 1.58 AML other m 2021-10-26T18:44:55.00
IV.MOCL.EHN. ML:1.4 5.537E-5 1.56 AML other m 2021-10-26T18:45:09.08
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