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) 38.1, 15.92 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.

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
Careri RC 19 2360 39680
Bova Marina RC 19 4235 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

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Bulletin
Rev1000
ML 1.9 2020-12-22
15:31:37
38.1 15.92 11 2021-02-26
14:56:17
Bollettino Sismico Italiano INGV 86834221
Reviewed
Rev100
ML 2.0 2020-12-22
15:31:37
38.11 15.93 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 38.10 ± 0.00
Longitude 15.92 ± 0.00
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
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

Field Value
Value 2
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 Takeoff_angle Residual Weight
IV.MILZ.HHZ. 2020-12-22T15:31:56.40 1.0 undecidable manual S 287 0.5702 50 0.03 23
IV.PLAC.HHZ. 2020-12-22T15:31:55.50 0.6 undecidable manual S 49 0.5315 50 0.27 44
IV.JOPP.HHZ. 2020-12-22T15:31:54.00 0.3 undecidable manual S 357 0.5045 50 -0.43 66
IV.MPNC.HHN. 2020-12-22T15:31:52.60 0.6 undecidable manual S 276 0.4515 50 -0.27 45
IV.FERC.HNZ. 2020-12-22T15:31:51.40 1.0 undecidable manual S 25 0.384 50 0.53 21
IV.MSRU.HHE. 2020-12-22T15:31:50.40 0.6 undecidable manual S 296 0.3642 50 0.12 48
IV.AIO.HHE. 2020-12-22T15:31:48.06 0.6 undecidable manual P 257 0.5603 50 0.03 46
IV.MILZ.HHZ. 2020-12-22T15:31:48.68 0.3 undecidable manual P 287 0.5702 50 0.48 64
IV.PLAC.HHZ. 2020-12-22T15:31:47.59 0.1 undecidable manual P 49 0.5315 50 0.05 93
IV.JOPP.HHZ. 2020-12-22T15:31:46.73 0.3 undecidable manual P 357 0.5045 50 -0.34 66
IV.SICLA.EHZ. 2020-12-22T15:31:46.10 0.3 undecidable manual S 313 0.2248 50 -0.05 74
IV.FERC.HNZ. 2020-12-22T15:31:45.02 0.3 undecidable manual P 25 0.384 50 0 72
IV.MPNC.HHN. 2020-12-22T15:31:45.37 0.6 undecidable manual P 276 0.4515 50 -0.8 37
IV.MSRU.HHE. 2020-12-22T15:31:44.28 0.6 undecidable manual P 296 0.3642 50 -0.4 44
MN.CEL.HHZ. 2020-12-22T15:31:44.20 0.3 undecidable manual S 351 0.1592 50 0 75
IV.SOI.EHZ. 2020-12-22T15:31:42.60 0.1 undecidable manual S 106 0.1061 133 -0.04 100
IV.SICLA.EHZ. 2020-12-22T15:31:42.45 0.3 undecidable manual P 313 0.2248 50 0.15 73
MN.CEL.HHZ. 2020-12-22T15:31:41.40 0.1 undecidable manual P 351 0.1592 50 0.23 96
IV.SOI.EHZ. 2020-12-22T15:31:40.46 0.1 undecidable manual P 106 0.1061 133 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HHN. ML:0 0.00054997095 0.4864 AML other m 2020-12-22T15:31:44.77
MN.CEL.HNN. ML:0 0.0006211282 0.6144 AML other m 2020-12-22T15:31:44.77
MN.CEL.HHE. ML:0 0.00092216605 0.3968 AML other m 2020-12-22T15:31:45.03
MN.CEL.HNE. ML:0 0.0009030964 0.3968 AML other m 2020-12-22T15:31:45.04
IV.JOPP.HHN. ML:0 0.00022426535 0.1792 AML other m 2020-12-22T15:31:54.54
IV.JOPP.HHE. ML:0 0.0003306027 0.256 AML other m 2020-12-22T15:31:54.50
IV.PLAC.HHE. ML:0 9.66E-5 0.24 AML other m 2020-12-22T15:31:57.74
IV.PLAC.HHN. ML:0 8.1767535E-5 0.3712 AML other m 2020-12-22T15:31:56.54
IV.MILZ.HHE. ML:0 0.0002243276 0.64 AML other m 2020-12-22T15:31:59.94
IV.MILZ.HHN. ML:0 0.00014804885 0.3456 AML other m 2020-12-22T15:31:59.94
IV.PLAC.HNE. ML:1.6 8.513733E-5 0.576 AML other m 2020-12-22T15:31:56.54
IV.PLAC.HNN. ML:1.7 9.806875E-5 0.256 AML other m 2020-12-22T15:31:56.45
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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 full SEED format Download