Earthquake with magnitude of ML 1.2 on date 09-12-2019 and time 22:46:21 (UTC) in region 4 km W Melilli (SR)

A magnitude ML 1.2 earthquake occured in region: 4 km W Melilli (SR), on

  • 09-12-2019 22:46:21 (UTC)
  • 09-12-2019 23:46:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.18, 15.08 at 21 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
Melilli SR 4 13621 13621
Sortino SR 5 8690 22311
Solarino SR 10 8091 30402
Priolo Gargallo SR 10 12091 42493
Carlentini SR 12 17798 60291
Floridia SR 13 22762 83053
Augusta SR 13 36305 119358
Lentini SR 14 24085 143443
Ferla SR 14 2523 145966
Cassaro SR 15 821 146787
Canicattini Bagni SR 16 7109 153896
Francofonte SR 19 12800 166696

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Siracusa (122291 inhabitants)
36 Km S of Catania (314555 inhabitants)
42 Km NE of Ragusa (73313 inhabitants)
46 Km NE of Modica (54633 inhabitants)
48 Km S of Acireale (52622 inhabitants)
55 Km NE of Vittoria (63339 inhabitants)
75 Km E of Gela (75827 inhabitants)
97 Km E of Caltanissetta (63360 inhabitants)
Recent and historical Seismicity
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
Rev 100 ML 1.2 2019-12-09
22:46:21
37.18 15.08 21 2019-12-09
22:53:49
Sala Sismica INGV-Roma 74497511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-09 22:46:21 ± 0.18
Latitude 37.18 ± 0.01
Longitude 15.08 ± 0.01
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74497511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 819
Semi-minor axis of confidence ellipse (meter) 625
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 820
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.23652
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 74497511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-09 22:53:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2019-12-09T22:47:03.48 3.0 undecidable manual Sn 0 0
IV.MSRU.HHZ. 2019-12-09T22:46:34.83 3.0 undecidable manual P -0.01 0
IV.HLNI.HHE. 2019-12-09T22:46:31.18 0.3 undecidable manual S 315 0.2365 121 -0.1 73
IV.AGST.EHZ. 2019-12-09T22:46:28.94 0.3 undecidable manual S 57 0.1358 139 -0.04 75
IV.HAGA.HHZ. 2019-12-09T22:46:28.64 0.3 undecidable manual S 29 0.1169 144 0.02 75
IV.SSY.HHZ. 2019-12-09T22:46:27.63 0.3 undecidable manual S 198 0.0261 171 0.06 75
IV.HLNI.HHE. 2019-12-09T22:46:27.09 0.3 undecidable manual P 315 0.2365 121 0.14 71
IV.AGST.EHZ. 2019-12-09T22:46:25.39 1.0 undecidable manual P 57 0.1358 139 -0.23 24
IV.HAGA.HHZ. 2019-12-09T22:46:25.46 0.1 undecidable manual P 29 0.1169 144 0.04 99
IV.SSY.HHZ. 2019-12-09T22:46:24.72 0.1 negative manual P 198 0.0261 171 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSY.HHE. ML:1.3 0.00014547655 0.0512 AML other m 2019-12-09T22:46:28.20
IV.SSY.HHN. ML:1.7 0.0003910916 0.1408 AML other m 2019-12-09T22:46:29.41
IV.AGST.EHE. ML:1.2 9.533421E-5 0.064 AML other m 2019-12-09T22:46:29.66
IV.AGST.EHN. ML:0.9 5.21244135E-5 0.064 AML other m 2019-12-09T22:46:29.69
IV.HAGA.HHE. ML:1.2 9.4581995E-5 0.1152 AML other m 2019-12-09T22:46:28.93
IV.HAGA.HHN. ML:1 6.9051365E-5 0.0768 AML other m 2019-12-09T22:46:28.95
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download