Earthquake with magnitude of ML 1.6 on date 01-08-2020 and time 16:48:43 (Italy) in region Costa Siracusana (Siracusa)

A magnitude ML 1.6 earthquake occured in region: Costa Siracusana (Siracusa), on

  • 01-08-2020 14:48:43 (UTC)
  • 01-08-2020 16:48:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.03, 15.47 at 30 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
Siracusa SR 16 122291 122291

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Siracusa (122291 inhabitants)
63 Km SE of Catania (314555 inhabitants)
66 Km E of Modica (54633 inhabitants)
67 Km E of Ragusa (73313 inhabitants)
71 Km SE of Acireale (52622 inhabitants)
83 Km E of Vittoria (63339 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
ML 1.6 2020-08-01
37.03 15.47 30 2020-08-01
Sala Sismica INGV-Roma 81549741
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2020-08-01 14:48:43 ± 0.2
Latitude 37.03 ± 0.01
Longitude 15.47 ± 0.01
Depth (km) 30 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81549741


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1419
Semi-minor axis of confidence ellipse (meter) 870
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 208
Circular confidence region, given by single value of horizontal uncertainty (meter) 1420
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 324
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.57647
Number of stations at which the event was observed 19
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 81549741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-01 14:57:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PII.HHZ. 2020-08-01T14:50:42.77 3.0 positive manual Pg 15.95 0
IV.SACR.HHZ. 2020-08-01T14:50:40.70 3.0 undecidable manual Sg 3.62 0
IV.CGL.BHZ. 2020-08-01T14:50:35.06 3.0 undecidable manual Sn -9.99 0
IV.PESA.HHZ. 2020-08-01T14:50:24.44 3.0 positive manual Pn 2.1 0
IX.STN3.HNZ.01 2020-08-01T14:50:22.22 3.0 undecidable manual Sg 3.37 0
IV.COR1.EHZ. 2020-08-01T14:50:19.04 3.0 positive manual Pn 1.16 0
IV.SRES.HHZ. 2020-08-01T14:50:12.61 3.0 undecidable manual Pg 12.16 0
AC.VLO.HHZ. 2020-08-01T14:50:04.03 3.0 undecidable manual Pg 5.73 0
IV.CET2.HHZ. 2020-08-01T14:50:00.08 3.0 undecidable manual Sg 2.02 0
IV.PANTE.HHZ. 2020-08-01T14:49:45.27 3.0 undecidable manual Sg 2.61 0
XK.GIZZ.HHZ. 2020-08-01T14:49:45.21 3.0 undecidable manual Sg -4.02 0
IV.MTMR.EHZ. 2020-08-01T14:49:35.15 3.0 negative manual Pn -4.51 0
IV.IMTC.HHZ. 2020-08-01T14:49:32.75 3.0 negative manual Pn -4.29 0
IV.SIRI.HHZ. 2020-08-01T14:49:25.07 3.0 undecidable manual Pn -6.83 0
IV.TDS.HHZ. 2020-08-01T14:49:23.70 3.0 negative manual Pn -3.89 0
IV.PANTE.HHZ. 2020-08-01T14:49:12.74 3.0 undecidable manual Pn -2.66 0
IV.HLNI.HHZ. 2020-08-01T14:49:04.27 0.6 undecidable manual S 304 0.5765 110 0.14 46
IV.HAGA.HHZ. 2020-08-01T14:48:58.25 0.6 undecidable manual S 316 0.3615 122 -0.14 49
IV.SSY.HHZ. 2020-08-01T14:48:57.95 0.6 undecidable manual S 293 0.3435 124 0 50
IV.HLNI.HHZ. 2020-08-01T14:48:55.38 0.1 undecidable manual P 304 0.5765 110 -0.11 93
IV.MEU.EHE. 2020-08-01T14:48:54.54 1.0 undecidable manual P 280 0.5189 112 -0.04 24
IV.HAGA.HHZ. 2020-08-01T14:48:52.29 0.1 positive manual P 316 0.3615 122 0.11 98
IV.SSY.HHZ. 2020-08-01T14:48:51.93 0.1 negative manual P 293 0.3435 124 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSY.HHE. ML:1.8 0.0001927999 0.1216 AML other m 2020-08-01T14:48:58.50
IV.HAGA.HHN. ML:1.5 8.066747E-5 1.4784 AML other m 2020-08-01T14:49:03.39
IV.HLNI.HHN. ML:1.5 5.2383085E-5 0.0832 AML other m 2020-08-01T14:49:05.61
IV.HLNI.HHE. ML:1.4 3.9550955E-5 0.0832 AML other m 2020-08-01T14:49:05.24
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