Earthquake with magnitude of ML 1.4 on date 16-10-2019 and time 06:55:32 (Italy) in region Costa Siracusana (Siracusa)

A magnitude ML 1.4 earthquake occured in region: Costa Siracusana (Siracusa), on

  • 16-10-2019 04:55:32 (UTC)
  • 16-10-2019 06:55:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 36.87, 15.51 at 20 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SE of Siracusa (122291 inhabitants)
67 Km E of Modica (54633 inhabitants)
70 Km E of Ragusa (73313 inhabitants)
80 Km SE of Catania (314555 inhabitants)
87 Km E of Vittoria (63339 inhabitants)
89 Km SE of Acireale (52622 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 1.4 2019-10-16
04:55:32
36.87 15.51 21 2019-10-16
05:24:59
Sala Sismica INGV-Roma 73281801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-16 04:55:32 ± 0.34
Latitude 36.87 ± 0.01
Longitude 15.51 ± 0.02
Depth (km) 21 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73281801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1769
Semi-minor axis of confidence ellipse (meter) 835
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 1770
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 270
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 14
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
Epicentral distance of station farthest from the epicenter (degree) 0.70956
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 73281801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-16 05:24:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2019-10-16T04:57:38.38 3.0 negative manual Pg 26.5 0
IV.MMUR.HNZ. 2019-10-16T04:57:34.16 3.0 undecidable manual Pg 22.959999 0
IT.LRNO.HNZ. 2019-10-16T04:57:33.28 3.0 undecidable manual Sn -9.99 0
IV.SSFR.HHZ. 2019-10-16T04:57:32.33 3.0 negative manual Pg 20.65 0
IV.ZCCA.HHZ. 2019-10-16T04:57:31.85 3.0 negative manual Pn 2.31 0
IV.PTRJ.HNZ. 2019-10-16T04:57:29.09 3.0 undecidable manual Sn -5.5 0
IT.ORP.HGZ. 2019-10-16T04:57:22.73 3.0 undecidable manual Sn -9.31 0
IV.MIGL.HHZ. 2019-10-16T04:57:20.12 3.0 undecidable manual Sg 1.23 0
HL.VLS.HHZ. 2019-10-16T04:57:18.43 3.0 undecidable manual Sn -9.99 0
IV.GUMA.HHZ. 2019-10-16T04:57:18.52 3.0 negative manual Pg 13.16 0
IV.TOLF.HHZ. 2019-10-16T04:57:17.39 3.0 undecidable manual Pg 20.700001 0
IV.MELA.HHZ. 2019-10-16T04:56:58.32 3.0 positive manual Pg 13.51 0
IV.VIVA.HHZ. 2019-10-16T04:56:49.41 3.0 negative manual Pn -0.27 0
IT.VNF1.HGZ. 2019-10-16T04:56:41.97 3.0 negative manual Pn -0.68 0
IV.CDRU.HHZ. 2019-10-16T04:56:38.60 3.0 undecidable manual Pg 10.42 0
IV.VBKN.HHZ. 2019-10-16T04:56:37.48 3.0 negative manual Pg 4.24 0
IV.SPS2.HHZ. 2019-10-16T04:56:37.19 3.0 undecidable manual Sn -9.99 0
IV.CMPR.HHZ. 2019-10-16T04:56:30.44 3.0 undecidable manual Pg 4.61 0
IV.TDS.HHZ. 2019-10-16T04:56:24.17 3.0 undecidable manual Pg 5.29 0
IV.HVZN.HHE. 2019-10-16T04:55:57.14 0.6 undecidable manual S 296 0.7096 98 0.56 38
IV.HLNI.HHZ. 2019-10-16T04:55:55.71 0.6 undecidable manual S 314 0.7033 98 -0.68 42
IV.HAGA.HHZ. 2019-10-16T04:55:50.76 0.6 undecidable manual S 326 0.5072 102 0.08 47
IV.AGST.EHE. 2019-10-16T04:55:49.10 0.6 undecidable manual S 330 0.4524 104 0 49
IV.SSY.HHZ. 2019-10-16T04:55:48.86 0.6 undecidable manual S 310 0.4569 104 -0.35 48
IV.HPAC.HHE. 2019-10-16T04:55:47.74 0.3 undecidable manual S 248 0.4128 106 -0.21 74
IV.HVZN.HHE. 2019-10-16T04:55:47.55 0.6 undecidable manual P 296 0.7096 98 0.98 37
IV.HLNI.HHZ. 2019-10-16T04:55:46.12 0.1 undecidable manual P 314 0.7033 98 -0.35 83
IT.PPL1.HGE. 2019-10-16T04:55:46.23 0.6 undecidable manual S 240 0.3543 109 -0.06 50
IV.HAGA.HHZ. 2019-10-16T04:55:43.38 0.1 undecidable manual P 326 0.5072 102 0.21 97
IV.AGST.EHE. 2019-10-16T04:55:42.24 0.6 undecidable manual P 330 0.4524 104 -0.01 47
IV.SSY.HHZ. 2019-10-16T04:55:42.30 0.1 undecidable manual P 310 0.4569 104 -0.02 96
IV.HPAC.HHE. 2019-10-16T04:55:41.60 0.1 undecidable manual P 248 0.4128 106 0.01 97
IT.PPL1.HGE. 2019-10-16T04:55:40.79 0.1 undecidable manual P 240 0.3543 109 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSY.HHE. ML:1.6 9.123223E-5 0.16 AML other m 2019-10-16T04:55:54.40
IV.SSY.HHN. ML:2 0.0002283684 0.2176 AML other m 2019-10-16T04:55:56.78
IV.HAGA.HHE. ML:1.3 4.3969905E-5 0.24 AML other m 2019-10-16T04:55:51.01
IV.HAGA.HHN. ML:1.3 4.431508E-5 0.1824 AML other m 2019-10-16T04:55:51.06
IV.HLNI.HHE. ML:1.2 1.951505E-5 0.32 AML other m 2019-10-16T04:56:01.41
IV.HLNI.HHN. ML:1.2 2.027651E-5 0.1184 AML other m 2019-10-16T04:56:00.76
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