Earthquake with magnitude of ML 1.8 on date 03-07-2020 and time 09:12:21 (Italy) in region Costa Siracusana (Siracusa)

A magnitude ML 1.8 earthquake occured in region: Costa Siracusana (Siracusa), on

  • 03-07-2020 07:12:21 (UTC)
  • 03-07-2020 09:12:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.18, 15.66 at 31 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
35 Km E of Siracusa (122291 inhabitants)
63 Km SE of Catania (314555 inhabitants)
65 Km SE of Acireale (52622 inhabitants)
87 Km E of Ragusa (73313 inhabitants)
87 Km E of Modica (54633 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
Reviewed
Rev100
ML 1.8 2020-07-03
07:12:21
37.18 15.66 31 2020-07-03
07:27:37
Sala Sismica INGV-Roma 80724591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-03 07:12:21 ± 0.28
Latitude 37.18 ± 0.02
Longitude 15.66 ± 0.02
Depth (km) 31 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80724591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1995
Semi-minor axis of confidence ellipse (meter) 1555
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 358
Circular confidence region, given by single value of horizontal uncertainty (meter) 2000
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 250
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.03602
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 80724591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-03 07:27:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-07-03T07:15:03.53 3.0 undecidable manual Sg 17.84 0
IV.GAVE.EHZ. 2020-07-03T07:14:54.70 3.0 undecidable manual Sn -9.42 0
IV.TOLF.HHZ. 2020-07-03T07:14:49.71 3.0 undecidable manual Sn -6.98 0
IV.APEC.HHZ. 2020-07-03T07:14:25.82 3.0 negative manual Pg 18.09 0
IV.MF5.EHZ. 2020-07-03T07:14:17.26 3.0 undecidable manual Pg 20.110001 0
IV.GAVE.EHZ. 2020-07-03T07:14:13.35 3.0 positive manual Pg 18.42 0
IV.ARRO.EHZ. 2020-07-03T07:14:11.37 3.0 undecidable manual Pg 17.450001 0
IV.VIVA.HHZ. 2020-07-03T07:13:41.48 3.0 positive manual Pn -1.91 0
OT.OT12.EHZ. 2020-07-03T07:13:38.93 3.0 undecidable manual Pn 2.49 0
IV.SERS.HHZ. 2020-07-03T07:13:33.77 3.0 undecidable manual Sg -0.19 0
IV.NOCI.HHZ. 2020-07-03T07:13:30.13 3.0 negative manual Pg 2.3 0
IV.VBKN.HHZ. 2020-07-03T07:13:29.81 3.0 positive manual Pg 3.73 0
IV.IFIL.HHZ. 2020-07-03T07:13:21.92 3.0 undecidable manual Sg 3.13 0
IV.CMPR.HHZ. 2020-07-03T07:13:17.12 3.0 undecidable manual Pn -1.02 0
IV.PLLN.EHZ. 2020-07-03T07:13:06.10 3.0 undecidable manual S -5.82 0
IV.IFIL.HHZ. 2020-07-03T07:12:57.83 3.0 undecidable manual Pg 2.07 0
IV.RAFF.HHZ. 2020-07-03T07:12:54.83 0.3 undecidable manual S 273 1.036 54 0.16 70
IV.CROCE.HHE. 2020-07-03T07:12:53.22 0.6 undecidable manual S 249 0.9641 54 0.28 46
IV.HVZN.HNE. 2020-07-03T07:12:47.76 0.6 undecidable manual S 270 0.7545 106 0.64 43
IV.HPAC.HHN. 2020-07-03T07:12:46.01 0.6 undecidable manual S 227 0.6844 107 0.88 39
IV.SOI.EHZ. 2020-07-03T07:12:45.56 3.0 negative manual P -3.87 0
IV.MEU.EHZ. 2020-07-03T07:12:44.55 0.3 undecidable manual S 265 0.6664 108 -0.08 74
IV.HLNI.HHZ. 2020-07-03T07:12:43.90 0.3 undecidable manual S 286 0.652 108 -0.32 71
IV.RAFF.HHZ. 2020-07-03T07:12:40.90 0.6 positive manual P 273 1.036 54 0.22 45
IV.CROCE.HHE. 2020-07-03T07:12:39.37 0.1 undecidable manual P 249 0.9641 54 -0.31 89
IV.AIO.HHE. 2020-07-03T07:12:38.64 0.1 undecidable manual P 337 0.8642 104 0.5 85
IV.HAGA.HHZ. 2020-07-03T07:12:37.71 0.6 undecidable manual S 285 0.4182 119 -0.14 52
IV.HVZN.HNE. 2020-07-03T07:12:36.49 0.6 undecidable manual P 270 0.7545 106 0.17 48
IV.HPAC.HHN. 2020-07-03T07:12:35.06 0.1 undecidable manual P 227 0.6844 107 -0.12 100
IV.MEU.EHZ. 2020-07-03T07:12:34.50 0.3 undecidable manual P 265 0.6664 108 -0.38 71
IV.HLNI.HHZ. 2020-07-03T07:12:34.15 0.3 negative manual P 286 0.652 108 -0.5 69
IV.HAGA.HHZ. 2020-07-03T07:12:30.78 0.6 positive manual P 285 0.4182 119 -0.19 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHE. ML:2 0.000151 1.04 AML other m 2020-07-03T07:12:44.64
IV.MEU.EHE. ML:1.9 9.975E-5 0.58 AML other m 2020-07-03T07:12:45.95
IV.HLNI.HHN. ML:1.9 0.000116 0.32 AML other m 2020-07-03T07:12:48.51
IV.HAGA.HHE. ML:1.6 8.7570075E-5 0.32 AML other m 2020-07-03T07:12:41.16
IV.HAGA.HHN. ML:1.6 9.343038E-5 0.2592 AML other m 2020-07-03T07:12:40.29
IV.MEU.EHN. ML:2 0.00012527037 0.1984 AML other m 2020-07-03T07:12:47.42
IV.RAFF.HHN. ML:2 7.3073025E-5 3.3184 AML other m 2020-07-03T07:13:02.38
IV.RAFF.HHE. ML:1.7 3.355749E-5 0.9984 AML other m 2020-07-03T07:12:56.25
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