Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 11-12-2020 and time 04:23:57 (Italy) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML 1.3 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 11-12-2020 03:23:57 (UTC)
  • 11-12-2020 04:23:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.8190, 16.1750 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Pizzo VV 9 9278 9278
Francavilla Angitola VV 10 1939 11217
Filadelfia VV 11 5384 16601
Maierato VV 13 2188 18789
Curinga CZ 13 6779 25568
Sant'Onofrio VV 14 3067 28635
Polia VV 14 1023 29658
Monterosso Calabro VV 15 1729 31387
San Pietro a Maida CZ 15 4200 35587
Briatico VV 16 4053 39640
Filogaso VV 16 1417 41057
Stefanaconi VV 16 2494 43551
Vibo Valentia VV 17 33941 77492
Maida CZ 17 4566 82058
Capistrano VV 17 1042 83100
Jacurso CZ 18 624 83724
Gizzeria CZ 18 4982 88706
San Nicola da Crissa VV 20 1335 90041

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Lamezia Terme (70714 inhabitants)
38 Km W of Catanzaro (90612 inhabitants)
53 Km S of Cosenza (67546 inhabitants)
87 Km W of Crotone (62178 inhabitants)
88 Km NE of Messina (238439 inhabitants)
91 Km NE of Reggio di Calabria (183035 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
Bulletin
Rev1000 		ML 1.3 2020-12-11
03:23:57		 38.8193 16.1752 7 2021-02-26
14:56:17		 Bollettino Sismico Italiano INGV 86831021
Reviewed
Rev100 		ML 1.3 2020-12-11
03:23:57		 38.8148 16.1813 7 2020-12-11
03:33:03		 Sala Sismica INGV-Roma 85350101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-11 03:23:57 ± 0.11
Latitude 38.8193 ± 0.0054
Longitude 16.1752 ± 0.0081
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86831021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 634
Semi-minor axis of confidence ellipse (meter) 391
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 128
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.72935
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 86831021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-04 14:39:33

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 85350101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-11 03:33:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2020-12-11T03:25:11.03 3.0 undecidable manual Sn -5.04 0
IV.PTRP.HHZ. 2020-12-11T03:24:51.29 3.0 undecidable manual Sg 5.14 0
IV.EVRN.HHZ. 2020-12-11T03:24:41.44 3.0 undecidable manual Sg 0.29 0
IV.CET2.HHZ. 2020-12-11T03:24:22.32 0.6 undecidable manual S 347 80.9523 50 0.1 48
IV.CELI.HHE. 2020-12-11T03:24:19.37 0.6 undecidable manual S 24 70.7736 50 -0.14 49
IV.SPS2.HHE. 2020-12-11T03:24:15.27 0.6 undecidable manual S 15 54.2013 50 0.19 50
IV.SERS.HNN. 2020-12-11T03:24:13.24 0.6 undecidable manual S 61 50.4162 50 -0.83 41
IV.PLAC.HHZ. 2020-12-11T03:24:12.91 0.6 undecidable manual S 151 46.9197 50 -0.24 50
XK.SELL.HHZ. 2020-12-11T03:24:11.79 0.6 undecidable manual S 65 43.1235 50 -0.33 50
IV.CET2.HHZ. 2020-12-11T03:24:10.78 0.6 undecidable manual P 347 80.9523 50 -0.89 38
IV.CELI.HHE. 2020-12-11T03:24:10.15 0.1 undecidable manual P 24 70.7736 50 0.04 100
MN.TIP.HHN. 2020-12-11T03:24:09.73 0.3 undecidable manual P 51 64.1913 50 0.64 65
IV.JOPP.HHZ. 2020-12-11T03:24:09.04 0.3 undecidable manual S 227 34.4433 102 -0.41 74
IV.SERS.HNN. 2020-12-11T03:24:07.23 0.3 undecidable manual P 61 50.4162 50 0.26 74
IV.SPS2.HHE. 2020-12-11T03:24:07.35 0.3 undecidable manual P 15 54.2013 50 -0.2 75
XK.SELL.HHZ. 2020-12-11T03:24:06.16 0.6 undecidable manual P 65 43.1235 50 0.32 50
IV.PLAC.HHZ. 2020-12-11T03:24:06.60 0.3 undecidable manual P 151 46.9197 50 0.17 76
XK.ALB1.HNZ. 2020-12-11T03:24:06.28 0.6 undecidable manual P 58 42.9237 50 0.47 48
IV.JOPP.HHZ. 2020-12-11T03:24:04.64 0.3 undecidable manual P 227 34.4433 102 0.34 75
IV.GRI.EHZ. 2020-12-11T03:24:04.80 0.3 undecidable manual S 89 21.1677 108 -0.21 79
XK.GIZZ.HHZ. 2020-12-11T03:24:03.74 0.3 undecidable manual S 9 18.0708 111 -0.23 79
XK.GIZZ.HHZ. 2020-12-11T03:24:01.40 0.3 undecidable manual P 9 18.0708 111 0.26 79
IV.GRI.EHZ. 2020-12-11T03:24:01.80 0.3 undecidable manual P 89 21.1677 108 0.07 82
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GRI.EHN. ML:1.5 0.00021717105 1.72 AML other m 2020-12-11T03:24:05.11
IV.GRI.EHE. ML:1.2 0.00011298652500000001 1.7408 AML other m 2020-12-11T03:24:05.98
IV.JOPP.HHN. ML:1.1 0.000051849069999999996 0.9008 AML other m 2020-12-11T03:24:09.60
IV.JOPP.HHE. ML:1.3 0.000085947835 1.8 AML other m 2020-12-11T03:24:10.06
IV.PLAC.HNN. ML:1.5 0.00008930743499999999 0.0608 AML other m 2020-12-11T03:24:13.11
IV.PLAC.HNE. ML:1.3 0.000055324265 0.1792 AML other m 2020-12-11T03:24:13.17
IV.PLAC.HHE. ML:1.1 0.000038218965 0.0192 AML other m 2020-12-11T03:24:13.89
IV.PLAC.HHN. ML:1.2 0.00004605492 0.2592 AML other m 2020-12-11T03:24:14.77
IV.CET2.HHE. ML:2.0 0.00013469585000000002 0.4608 AML other m 2020-12-11T03:24:22.52
IV.CET2.HHN. ML:1.8 0.00008539528 0.52 AML other m 2020-12-11T03:24:23.08
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