Earthquake with magnitude of ML 2.6 on date 24-09-2020 and time 20:11:00 (Italy) in region Costa Siciliana nord occidentale (Trapani)

A magnitude ML 2.6 earthquake occured in region: Costa Siciliana nord occidentale (Trapani), on

  • 24-09-2020 18:11:00 (UTC)
  • 24-09-2020 20:11:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.2780, 12.9010 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
San Vito Lo Capo TP 18 4654 4654

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Palermo (674435 inhabitants)
44 Km NE of Trapani (68759 inhabitants)
58 Km W of Bagheria (55387 inhabitants)
67 Km NE of Marsala (83194 inhabitants)
75 Km NE of Mazara del Vallo (51718 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.6 2020-09-24
18:11:00
38.2775 12.9008 9 2021-02-26
14:56:10
Bollettino Sismico Italiano INGV 85318981
Reviewed
Rev100
ML 2.6 2020-09-24
18:11:00
38.2827 12.869 10 2020-09-24
18:34:30
Sala Sismica INGV-Roma 83206481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-24 18:11:00 ± 0.66
Latitude 38.2775 ± 0.0144
Longitude 12.9008 ± 0.0195
Depth (km) 9 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85318981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1919
Semi-minor axis of confidence ellipse (meter) 451
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 308
Circular confidence region, given by single value of horizontal uncertainty (meter) 1920.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.58
Epicentral distance of station closest to the epicenter (degree) 0.33365
Epicentral distance of station farthest from the epicenter (degree) 2.99834
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.6

Field Value
Value 2.6
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 83206481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-24 18:34:29

ML:2.6

Field Value
Value 2.6
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 85318981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-22 10:47:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.VSL.HHN. 2020-09-24T18:11:46.57 0.3 undecidable manual P 295 332.8113 38 -2.1 8
IV.LEVAN.EHZ. 2020-09-24T18:11:19.10 0.6 undecidable manual S 237 57.8976 50 0.43 50
IV.PLLN.EHZ. 2020-09-24T18:11:19.56 0.6 undecidable manual P 106 112.8981 50 0.18 47
IV.GIB.HHZ. 2020-09-24T18:11:17.64 0.3 undecidable manual P 108 103.2189 50 -0.25 71
IV.USI.HHZ. 2020-09-24T18:11:17.56 0.6 undecidable manual S 27 53.502 50 0.06 54
IV.CRJA.HHZ. 2020-09-24T18:11:17.56 0.6 undecidable manual S 170 53.502 50 0.05 54
IV.SCIAC.HHZ. 2020-09-24T18:11:16.24 0.3 undecidable manual P 168 86.247 50 0.97 57
MN.CLTB.HHZ. 2020-09-24T18:11:15.50 0.3 undecidable manual P 160 82.3509 50 0.83 61
IV.SCIAR.HHZ. 2020-09-24T18:11:14.20 0.3 undecidable manual P 117 82.9503 50 -0.56 68
IV.MTGR.HHZ. 2020-09-24T18:11:14.97 0.6 undecidable manual S 196 44.3223 50 -0.09 55
IV.MBFT.HHZ. 2020-09-24T18:11:13.20 0.3 undecidable manual S 173 37.0296 50 0.1 83
IV.CAVT.HHZ. 2020-09-24T18:11:13.90 0.3 undecidable manual P 191 67.5768 50 1.5 45
IV.ERC.EHN. 2020-09-24T18:11:12.93 0.6 undecidable manual S 226 38.1285 50 -0.47 51
IV.MARS.EHZ. 2020-09-24T18:11:12.75 0.3 undecidable manual P 207 65.1903 50 0.73 66
IV.MFNL.HHZ. 2020-09-24T18:11:11.19 0.1 undecidable manual P 178 54.0015 50 0.89 84
IV.USI.HHZ. 2020-09-24T18:11:11.05 0.1 undecidable manual P 27 53.502 50 0.82 87
IV.LEVAN.EHZ. 2020-09-24T18:11:10.38 0.1 undecidable manual P 237 57.8976 50 -0.53 97
IV.CRJA.HHZ. 2020-09-24T18:11:10.90 0.1 negative manual P 170 53.502 50 0.66 93
IV.CORL.HHZ. 2020-09-24T18:11:09.67 0.1 undecidable manual P 140 55.2003 50 -0.81 87
IV.MTGR.HHZ. 2020-09-24T18:11:08.31 0.1 undecidable manual P 196 44.3223 50 -0.51 100
IV.ERC.EHN. 2020-09-24T18:11:07.21 0.1 undecidable manual P 226 38.1285 50 -0.65 96
IV.MPG.HHE. 2020-09-24T18:11:07.33 0.3 undecidable manual P 108 42.0246 50 -1.13 58
IV.MBFT.HHZ. 2020-09-24T18:11:06.93 0.1 undecidable manual P 173 37.0296 50 -0.76 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MBFT.HNE. ML:1.7 0.000179 1.74 AML other m 2020-09-24T18:11:14.04
IV.MBFT.HHE. ML:2.6 0.0017423415000000003 0.2816 AML other m 2020-09-24T18:11:14.05
IV.MBFT.HNN. ML:1.6 0.00014590500000000002 0.6912 AML other m 2020-09-24T18:11:14.22
IV.MBFT.HHN. ML:2.4 0.0009504448999999999 0.3968 AML other m 2020-09-24T18:11:14.71
IV.CRJA.HHN. ML:2.5 0.0008049999999999999 0.7 AML other m 2020-09-24T18:11:19.98
IV.USI.HHN. ML:2.9 0.0018431384999999998 0.4608 AML other m 2020-09-24T18:11:20.90
IV.LEVAN.EHN. ML:2.3 0.000433 0.58 AML other m 2020-09-24T18:11:21.98
IV.USI.HHE. ML:2.5 0.0007072023500000001 0.4096 AML other m 2020-09-24T18:11:22.50
IV.CRJA.HHE. ML:2.6 0.0009595000000000001 0.5 AML other m 2020-09-24T18:11:22.72
IV.LEVAN.EHE. ML:2.4 0.0006419999999999999 0.4 AML other m 2020-09-24T18:11:23.47
IV.CORL.HHE. ML:2.7 0.001279419 0.576 AML other m 2020-09-24T18:11:24.70
IV.CORL.HHN. ML:2.6 0.0009338622000000001 0.3328 AML other m 2020-09-24T18:11:26.15
IV.MARS.EHE. ML:2.7 0.0009575 0.42 AML other m 2020-09-24T18:11:26.53
IV.MARS.EHN. ML:2.5 0.00064312755 0.3584 AML other m 2020-09-24T18:11:27.59
IV.CAVT.HHN. ML:3.0 0.00155 0.64 AML other m 2020-09-24T18:11:27.56
IV.CAVT.HHE. ML:2.9 0.001385 0.78 AML other m 2020-09-24T18:11:27.92
IV.SCIAR.HNE. ML:2.5 0.00042500000000000003 0.28 AML other m 2020-09-24T18:11:28.68
IV.MFNL.HHN. ML:2.2 0.00033899999999999995 0.42 AML other m 2020-09-24T18:11:31.12
IV.SCIAC.HHE. ML:2.4 0.00034021405 0.448 AML other m 2020-09-24T18:11:31.40
IV.MFNL.HHE. ML:2.4 0.0005674999999999999 1.14 AML other m 2020-09-24T18:11:31.83
IV.SCIAR.HHN. ML:2.7 0.00064159265 0.4224 AML other m 2020-09-24T18:11:32.09
IV.SCIAR.HNN. ML:2.7 0.000656 0.34 AML other m 2020-09-24T18:11:32.09
IV.SCIAC.HHN. ML:2.6 0.00045581185 0.6272 AML other m 2020-09-24T18:11:33.37
IV.SCIAR.HHE. ML:2.5 0.00045 0.36 AML other m 2020-09-24T18:11:34.62
IV.GIB.HHN. ML:2.7 0.00053 1.4 AML other m 2020-09-24T18:11:36.08
IV.PLLN.EHN. ML:2.6 0.000343 0.76 AML other m 2020-09-24T18:11:38.04
IV.GIB.HHE. ML:2.7 0.00047418884999999997 0.512 AML other m 2020-09-24T18:11:38.79
IV.PLLN.EHE. ML:2.5 0.0002385 0.42 AML other m 2020-09-24T18:11:39.49
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download