Earthquake with magnitude of ML 1.6 on date 28-12-2019 and time 05:35:04 (Italy) in region Costa Calabra sud orientale (Reggio di Calabria)

A magnitude ML 1.6 earthquake occured in region: Costa Calabra sud orientale (Reggio di Calabria), on

  • 28-12-2019 04:35:04 (UTC)
  • 28-12-2019 05:35:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.86, 15.74 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
Roghudi RC 7 1104 1104
Melito di Porto Salvo RC 8 11355 12459
Montebello Ionico RC 13 6214 18673
Motta San Giovanni RC 16 6208 24881
Bova Marina RC 18 4235 29116
San Lorenzo RC 18 2640 31756
Condofuri RC 19 5113 36869
Bagaladi RC 19 1039 37908

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km S of Reggio di Calabria (183035 inhabitants)
40 Km SE of Messina (238439 inhabitants)
58 Km NE of Acireale (52622 inhabitants)
70 Km NE of Catania (314555 inhabitants)
98 Km NE of Siracusa (122291 inhabitants)
Recent and historical Seismicity
Seismic hazard
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 ( 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
Rev 100 ML 1.6 2019-12-28
37.86 15.74 10 2019-12-28
Sala Sismica INGV-Roma 75031901
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2019-12-28 04:35:04 ± 0.67
Latitude 37.86 ± 0.03
Longitude 15.74 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75031901


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3440
Semi-minor axis of confidence ellipse (meter) 2410
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 326
Circular confidence region, given by single value of horizontal uncertainty (meter) 3440
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 276
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.75093
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitude information


Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 75031901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-28 04:40:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2019-12-28T04:35:20.11 0.1 undecidable manual S 335 0.4398 50 0.38 97
IV.AIO.HHZ. 2019-12-28T04:35:19.26 0.1 undecidable manual S 285 0.4146 50 0.27 100
IV.JOPP.HHZ. 2019-12-28T04:35:18.96 0.6 undecidable manual P 9 0.7509 50 0.55 44
IV.MPNC.HHZ. 2019-12-28T04:35:18.70 0.1 undecidable manual S 313 0.4164 50 -0.34 98
IV.HLNI.HHZ. 2019-12-28T04:35:18.84 3.0 positive manual P -3.24 0
IV.MSRU.HHZ. 2019-12-28T04:35:12.85 0.1 negative manual P 335 0.4398 50 -0.24 100
IV.AIO.HHZ. 2019-12-28T04:35:12.95 0.1 negative manual P 285 0.4146 50 0.29 99
IV.MPNC.HHZ. 2019-12-28T04:35:12.03 0.1 negative manual P 313 0.4164 50 -0.65 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHN. ML:1.5 8.605E-5 0.42 AML other m 2019-12-28T04:35:20.11
IV.MPNC.HHE. ML:1.7 0.000143 0.86 AML other m 2019-12-28T04:35:20.71
IV.MPNC.HHN. ML:1.8 0.000168 0.66 AML other m 2019-12-28T04:35:20.06
IV.MSRU.HHN. ML:2.1 0.0003375 0.48 AML other m 2019-12-28T04:35:20.48
IV.MSRU.HHE. ML:2.3 0.0005625 0.34 AML other m 2019-12-28T04:35:20.66
IV.AIO.HHE. ML:1.5 8.645E-5 0.46 AML other m 2019-12-28T04:35:20.56
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download