Earthquake with magnitude of ML 1.3 on date 30-09-2020 and time 21:13:47 (Italy) in region 2 km NW Sortino (SR)

A magnitude ML 1.3 earthquake occured in region: 2 km NW Sortino (SR), on

  • 30-09-2020 19:13:47 (UTC)
  • 30-09-2020 21:13:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.18, 15.02 at 11 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
Sortino SR 3 8690 8690
Melilli SR 9 13621 22311
Carlentini SR 10 17798 40109
Ferla SR 10 2523 42632
Cassaro SR 11 821 43453
Lentini SR 11 24085 67538
Solarino SR 12 8091 75629
Francofonte SR 14 12800 88429
Priolo Gargallo SR 15 12091 100520
Floridia SR 16 22762 123282
Buscemi SR 17 1051 124333
Buccheri SR 17 1999 126332
Canicattini Bagni SR 17 7109 133441
Palazzolo Acreide SR 17 8808 142249
Augusta SR 18 36305 178554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Siracusa (122291 inhabitants)
36 Km S of Catania (314555 inhabitants)
39 Km NE of Ragusa (73313 inhabitants)
43 Km NE of Modica (54633 inhabitants)
49 Km S of Acireale (52622 inhabitants)
50 Km NE of Vittoria (63339 inhabitants)
70 Km E of Gela (75827 inhabitants)
92 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
Reviewed
Rev100
ML 1.3 2020-09-30
19:13:47
37.18 15.02 11 2020-09-30
19:20:02
Sala Sismica INGV-Roma 83393911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-30 19:13:47 ± 0.05
Latitude 37.18 ± 0.00
Longitude 15.02 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83393911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 595
Semi-minor axis of confidence ellipse (meter) 314
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.04766
Epicentral distance of station farthest from the epicenter (degree) 0.29678
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 83393911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-30 19:20:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2020-09-30T19:13:58.68 0.3 undecidable manual S 221 0.2968 50 0.21 69
IV.HAVL.HHZ. 2020-09-30T19:13:56.69 0.3 undecidable manual S 161 0.2383 50 -0.04 72
IV.HLNI.HHZ. 2020-09-30T19:13:55.72 0.6 undecidable manual S 323 0.2041 50 -0.01 49
IV.HAGA.HHZ. 2020-09-30T19:13:53.99 0.6 undecidable manual S 46 0.1439 124 0.14 48
IV.HMDC.HHZ. 2020-09-30T19:13:53.52 1.0 positive manual P 221 0.2968 50 -0.17 23
IV.HAVL.HHZ. 2020-09-30T19:13:52.62 0.6 positive manual P 161 0.2383 50 -0.07 48
IV.HLNI.HHZ. 2020-09-30T19:13:51.93 0.3 negative manual P 323 0.2041 50 -0.17 71
IV.SSY.HHZ. 2020-09-30T19:13:51.18 0.3 undecidable manual S 125 0.0477 154 -0.14 74
IV.HAGA.HHZ. 2020-09-30T19:13:51.09 0.1 negative manual P 46 0.1439 124 0.07 98
IV.SSY.HHZ. 2020-09-30T19:13:49.61 0.1 negative manual P 125 0.0477 154 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSY.HHE. ML:2.5 0.00512 0.24 AML other m 2020-09-30T19:13:51.23
IV.SSY.HHN. ML:2.2 0.00269 0.18 AML other m 2020-09-30T19:13:53.58
IV.HAGA.HHN. ML:1.1 0.0001145 0.56 AML other m 2020-09-30T19:13:54.44
IV.HAGA.HHE. ML:1.1 0.0001105 1.08 AML other m 2020-09-30T19:13:54.26
IV.HLNI.HHE. ML:1.2 0.00010665 0.32 AML other m 2020-09-30T19:13:56.61
IV.HAVL.HHE. ML:1.3 0.0001204 0.58 AML other m 2020-09-30T19:13:57.60
IV.HLNI.HHN. ML:1.1 7.36E-5 0.7 AML other m 2020-09-30T19:13:58.39
IV.HAVL.HHN. ML:1.4 0.0001455 0.42 AML other m 2020-09-30T19:13:58.83
IV.HMDC.HHE. ML:1.4 0.0001215 1.38 AML other m 2020-09-30T19:13:58.81
IV.HMDC.HHN. ML:1.3 8.435E-5 1.56 AML other m 2020-09-30T19:13:59.90
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