Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 22-12-2020 and time 16:31:37 (Italy) in region 7 km NE Roccaforte del Greco (RC)

A magnitude ML 1.9 earthquake occured in region: 7 km NE Roccaforte del Greco (RC), on

  • 22-12-2020 15:31:37 (UTC)
  • 22-12-2020 16:31:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.1030, 15.9240 at 11 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Roccaforte del Greco RC 7 476 476
Bova RC 12 448 924
Samo RC 12 809 1733
Condofuri RC 12 5113 6846
Bagaladi RC 12 1039 7885
San Lorenzo RC 13 2640 10525
San Luca RC 13 3881 14406
Santo Stefano in Aspromonte RC 14 1263 15669
Sant'Agata del Bianco RC 14 592 16261
Cardeto RC 14 1641 17902
Caraffa del Bianco RC 14 539 18441
Casignana RC 15 759 19200
Staiti RC 15 248 19448
Delianuova RC 15 3352 22800
Scido RC 16 931 23731
Ferruzzano RC 16 772 24503
Sant'Alessio in Aspromonte RC 17 343 24846
Platì RC 17 3812 28658
Bruzzano Zeffirio RC 17 1111 29769
Santa Cristina d'Aspromonte RC 17 929 30698
Laganadi RC 18 413 31111
Sinopoli RC 18 2089 33200
Sant'Eufemia d'Aspromonte RC 19 4120 37320
Bova Marina RC 19 4235 41555
Careri RC 19 2360 43915
Africo RC 19 3075 46990
Cosoleto RC 19 859 47849
Montebello Ionico RC 20 6214 54063
Calanna RC 20 934 54997
Bianco RC 20 4273 59270

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Reggio di Calabria (183035 inhabitants)
34 Km E of Messina (238439 inhabitants)
86 Km NE of Acireale (52622 inhabitants)
99 Km NE of Catania (314555 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 1.9 2020-12-22
15:31:37		 38.1033 15.9245 11 2021-02-26
14:56:17		 Bollettino Sismico Italiano INGV 86834221
Reviewed
Rev100 		ML 2.0 2020-12-22
15:31:37		 38.1128 15.9272 11 2020-12-22
15:39:05		 Sala Sismica INGV-Roma 85630251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-22 15:31:37 ± 0.08
Latitude 38.1033 ± 0.0045
Longitude 15.9245 ± 0.0046
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86834221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 471
Semi-minor axis of confidence ellipse (meter) 191
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
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) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.57017
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 86834221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-04 19:18:45

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 85630251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-22 15:39:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MILZ.HHZ. 2020-12-22T15:31:56.40 1.0 undecidable manual S 287 63.2922 50 0.03 23
IV.PLAC.HHZ. 2020-12-22T15:31:55.50 0.6 undecidable manual S 49 58.9965 50 0.27 44
IV.JOPP.HHZ. 2020-12-22T15:31:54.00 0.3 undecidable manual S 357 55.9995 50 -0.43 66
IV.MPNC.HHN. 2020-12-22T15:31:52.60 0.6 undecidable manual S 276 50.1165 50 -0.27 45
IV.FERC.HNZ. 2020-12-22T15:31:51.40 1.0 undecidable manual S 25 42.624 50 0.53 21
IV.MSRU.HHE. 2020-12-22T15:31:50.40 0.6 undecidable manual S 296 40.4262 50 0.12 48
IV.AIO.HHE. 2020-12-22T15:31:48.06 0.6 undecidable manual P 257 62.1933 50 0.03 46
IV.MILZ.HHZ. 2020-12-22T15:31:48.68 0.3 undecidable manual P 287 63.2922 50 0.48 64
IV.PLAC.HHZ. 2020-12-22T15:31:47.59 0.1 undecidable manual P 49 58.9965 50 0.05 93
IV.SICLA.EHZ. 2020-12-22T15:31:46.10 0.3 undecidable manual S 313 24.9528 50 -0.05 74
IV.JOPP.HHZ. 2020-12-22T15:31:46.73 0.3 undecidable manual P 357 55.9995 50 -0.34 66
IV.FERC.HNZ. 2020-12-22T15:31:45.02 0.3 undecidable manual P 25 42.624 50 0 72
IV.MPNC.HHN. 2020-12-22T15:31:45.37 0.6 undecidable manual P 276 50.1165 50 -0.8 37
IV.MSRU.HHE. 2020-12-22T15:31:44.28 0.6 undecidable manual P 296 40.4262 50 -0.4 44
MN.CEL.HHZ. 2020-12-22T15:31:44.20 0.3 undecidable manual S 351 17.6712 50 0 75
IV.SICLA.EHZ. 2020-12-22T15:31:42.45 0.3 undecidable manual P 313 24.9528 50 0.15 73
IV.SOI.EHZ. 2020-12-22T15:31:42.60 0.1 undecidable manual S 106 11.7771 133 -0.04 100
MN.CEL.HHZ. 2020-12-22T15:31:41.40 0.1 undecidable manual P 351 17.6712 50 0.23 96
IV.SOI.EHZ. 2020-12-22T15:31:40.46 0.1 undecidable manual P 106 11.7771 133 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HHN. ML:0.0 0.0005499709500000001 0.4864 AML other m 2020-12-22T15:31:44.77
MN.CEL.HNN. ML:0.0 0.0006211282 0.6144 AML other m 2020-12-22T15:31:44.77
MN.CEL.HHE. ML:0.0 0.00092216605 0.3968 AML other m 2020-12-22T15:31:45.03
MN.CEL.HNE. ML:0.0 0.0009030964 0.3968 AML other m 2020-12-22T15:31:45.04
IV.JOPP.HHN. ML:0.0 0.00022426535 0.1792 AML other m 2020-12-22T15:31:54.54
IV.JOPP.HHE. ML:0.0 0.0003306027 0.256 AML other m 2020-12-22T15:31:54.50
IV.PLAC.HHE. ML:0.0 0.00009659999999999999 0.24 AML other m 2020-12-22T15:31:57.74
IV.PLAC.HHN. ML:0.0 0.00008176753500000001 0.3712 AML other m 2020-12-22T15:31:56.54
IV.MILZ.HHE. ML:0.0 0.0002243276 0.64 AML other m 2020-12-22T15:31:59.94
IV.MILZ.HHN. ML:0.0 0.00014804885 0.3456 AML other m 2020-12-22T15:31:59.94
IV.PLAC.HNE. ML:1.6 0.00008513732999999999 0.576 AML other m 2020-12-22T15:31:56.54
IV.PLAC.HNN. ML:1.7 0.00009806875000000001 0.256 AML other m 2020-12-22T15:31:56.45
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
Waveforms Seismic signals in miniseed + resp format Download