Earthquake with magnitude of ML 3.1 on date 24-10-2020 and time 13:55:58 (UTC) in region Tirreno Meridionale (MARE)

A magnitude ML 3.1 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 24-10-2020 13:55:58 (UTC)
  • 24-10-2020 15:55:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.754, 13.961 at 30 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
85 Km NE of Bagheria (55387 inhabitants)
88 Km NE of Palermo (674435 inhabitants)
Recent and historical seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows 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 reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows 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 https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap *

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap *

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap *

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Bulletin
Rev1000
ML 3.1 2020-10-24
13:55:58
38.7538 13.9608 30 2021-02-26
14:56:20
Bollettino Sismico Italiano INGV 87475781
Reviewed
Rev100
ML 3.1 2020-10-24
13:55:58
38.7478 13.9308 34 2020-10-24
14:06:22
Sala Sismica INGV-Roma 84092641
Rapid automatic
Auto1
ML 3.1 2020-10-24
13:55:59
38.7097 14.0838 10 2020-10-24
13:57:42
Sistema Automatico Earthworm-10 84092571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-24 13:55:58 ± 0.13
Latitude 38.7538 ± 0.0081
Longitude 13.9608 ± 0.0092
Depth (km) 30 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87475781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 788
Semi-minor axis of confidence ellipse (meter) 688
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 309
Circular confidence region, given by single value of horizontal uncertainty (meter) 790
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.37861
Epicentral distance of station farthest from the epicenter (degree) 1.95872
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 39
Magnitudes information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 87475781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-25 10:12:32

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 84092641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-24 14:06:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MGR.HHZ. 2020-10-24T13:56:51.00 0.6 undecidable manual S 41 1.8499 54 -0.38 29
IV.CAR1.HHZ. 2020-10-24T13:56:50.66 0.6 undecidable manual S 73 1.8175 54 0.05 31
IV.GRIS.EHE. 2020-10-24T13:56:49.64 0.6 undecidable manual S 55 1.7654 54 0.28 30
IV.CET2.HHZ. 2020-10-24T13:56:48.27 0.3 undecidable manual S 63 1.7285 54 -0.2 48
IV.MSRU.HHE. 2020-10-24T13:56:37.76 0.6 undecidable manual S 112 1.3058 54 -0.59 36
IV.MPNC.HHZ. 2020-10-24T13:56:36.96 0.6 undecidable manual S 119 1.2474 54 0.01 41
IV.PLAC.HHZ. 2020-10-24T13:56:30.96 0.1 undecidable manual P 98 1.9587 54 0.35 52
IV.MUCR.HHZ. 2020-10-24T13:56:30.52 0.3 undecidable manual S 135 1.0081 54 -0.71 55
IV.PETRA.HHZ. 2020-10-24T13:56:29.28 0.6 undecidable manual S 172 0.9281 102 0.11 44
IV.SSY.HHZ. 2020-10-24T13:56:29.52 0.6 undecidable manual P 151 1.8202 54 0.82 25
IV.MGR.HHZ. 2020-10-24T13:56:29.38 0.3 undecidable manual P 41 1.8499 54 0.27 43
IV.CMPR.HHZ. 2020-10-24T13:56:29.89 0.3 undecidable manual P 33 1.8742 54 0.44 41
IV.GRIS.EHE. 2020-10-24T13:56:28.41 0.3 undecidable manual P 55 1.7654 54 0.47 43
IV.CAR1.HHZ. 2020-10-24T13:56:28.84 0.1 undecidable manual P 73 1.8175 54 0.18 60
IV.CET2.HHZ. 2020-10-24T13:56:27.60 0.1 undecidable manual P 63 1.7285 54 0.17 63
IV.HCRL.HHZ. 2020-10-24T13:56:27.47 0.3 undecidable manual P 150 1.6952 54 0.5 45
IV.BULG.HHE. 2020-10-24T13:56:27.79 0.3 undecidable manual P 39 1.7168 54 0.52 44
IV.SCIAR.HHZ. 2020-10-24T13:56:27.46 0.6 undecidable manual S 192 0.8292 104 1.13 32
IV.MSFR.HHZ. 2020-10-24T13:56:27.94 0.3 undecidable manual S 145 0.8732 103 0.36 64
IV.RAFF.HHZ. 2020-10-24T13:56:26.84 0.3 undecidable manual P 168 1.563 54 1.7 27
IV.MPG.HHE. 2020-10-24T13:56:25.05 0.6 undecidable manual S 219 0.7554 105 0.83 38
IV.GIB.HHZ. 2020-10-24T13:56:25.53 0.6 undecidable manual S 176 0.7653 105 1.05 34
IV.PLLN.EHZ. 2020-10-24T13:56:24.76 0.6 undecidable manual S 169 0.7743 105 0.02 46
IV.CSLB.HHZ. 2020-10-24T13:56:24.90 0.6 undecidable manual S 175 0.8193 104 -1.15 30
IV.LEVAN.EHN. 2020-10-24T13:56:24.54 1.0 undecidable manual P 239 1.4776 54 0.58 17
MN.CEL.HHZ. 2020-10-24T13:56:24.98 0.3 undecidable manual P 107 1.59 54 -0.54 48
IV.JOPP.HNN. 2020-10-24T13:56:23.76 0.3 undecidable manual P 95 1.5091 54 -0.63 48
X3.T1574.HHZ. 2020-10-24T13:56:22.84 0.6 undecidable manual P 225 1.2761 54 1.66 21
MN.CLTB.HHZ. 2020-10-24T13:56:21.78 1.0 undecidable manual P 207 1.313 54 0.09 20
IV.MTGR.HHZ. 2020-10-24T13:56:21.29 1.0 undecidable manual P 228 1.2752 54 0.12 20
IV.MSRU.HHE. 2020-10-24T13:56:20.85 0.3 undecidable manual P 112 1.3058 54 -0.73 51
IV.MPNC.HHZ. 2020-10-24T13:56:20.00 0.3 undecidable manual P 119 1.2474 54 -0.78 50
IV.RESU.HHZ. 2020-10-24T13:56:20.27 0.6 undecidable manual P 176 1.1089 54 1.4 26
IV.GALF.HHZ. 2020-10-24T13:56:20.48 0.3 undecidable manual P 155 1.1457 54 1.1 45
IV.USI.HHZ. 2020-10-24T13:56:19.90 0.6 undecidable manual S 266 0.6115 109 -0.22 46
IV.MBFT.HHN. 2020-10-24T13:56:18.97 1.0 undecidable manual P 225 1.1295 54 -0.18 21
IV.IFIL.HHZ. 2020-10-24T13:56:18.64 0.6 undecidable manual S 111 0.5153 113 1.17 33
IV.MILZ.HHE. 2020-10-24T13:56:18.19 0.3 undecidable manual P 115 1.1044 54 -0.62 56
IV.CORL.HHZ. 2020-10-24T13:56:17.44 0.6 undecidable manual P 211 1.0018 54 0.05 44
IV.PETRA.HHZ. 2020-10-24T13:56:16.39 0.3 undecidable manual P 172 0.9281 102 0.1 66
IV.IST3.HHE. 2020-10-24T13:56:16.98 0.6 undecidable manual P 87 0.9902 54 -0.25 42
IV.MUCR.HHZ. 2020-10-24T13:56:16.98 0.1 undecidable manual P 135 1.0081 54 -0.5 79
IV.IVGP.HHE. 2020-10-24T13:56:15.10 0.3 undecidable manual P 114 0.8589 103 -0.04 68
IV.MSFR.HHZ. 2020-10-24T13:56:15.04 0.1 undecidable manual P 145 0.8732 103 -0.33 84
IV.ILOS.HHE. 2020-10-24T13:56:15.66 0.6 undecidable manual P 111 0.8301 104 1 34
IV.IVPL.HHE. 2020-10-24T13:56:15.21 0.3 undecidable manual P 115 0.8813 103 -0.3 64
IV.IVUG.HHE. 2020-10-24T13:56:15.16 0.3 undecidable manual P 114 0.8768 103 -0.28 64
IV.SCIAR.HHZ. 2020-10-24T13:56:14.72 0.1 undecidable manual P 192 0.8292 104 0.07 91
IV.GIB.HHZ. 2020-10-24T13:56:13.46 0.1 undecidable manual P 176 0.7653 105 -0.12 90
IV.PLLN.EHZ. 2020-10-24T13:56:13.43 0.3 undecidable manual P 169 0.7743 105 -0.3 65
IV.CSLB.HHZ. 2020-10-24T13:56:13.91 0.1 undecidable manual P 175 0.8193 104 -0.57 79
IV.IACL.HHZ. 2020-10-24T13:56:13.99 0.6 undecidable manual S 126 0.3786 121 0.15 49
IV.MPG.HHE. 2020-10-24T13:56:12.61 0.3 undecidable manual P 219 0.7554 105 -0.82 55
IV.USI.HHZ. 2020-10-24T13:56:10.29 0.3 undecidable manual P 266 0.6115 109 -0.77 58
IV.IFIL.HHZ. 2020-10-24T13:56:09.62 0.1 undecidable manual P 111 0.5153 113 0.09 96
IV.IACL.HHZ. 2020-10-24T13:56:07.42 0.1 undecidable manual P 126 0.3786 121 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IACL.HHE. ML:3.6 0.00964 1.08 AML other m 2020-10-24T13:56:14.07
IV.IACL.HHN. ML:3.5 0.00865 0.76 AML other m 2020-10-24T13:56:15.75
IV.IFIL.HHN. ML:3.4 0.004685 0.52 AML other m 2020-10-24T13:56:21.56
IV.IFIL.HHE. ML:3.8 0.01232 0.5 AML other m 2020-10-24T13:56:21.58
IV.GIB.HHN. ML:3.4 0.00331 1.32 AML other m 2020-10-24T13:56:28.18
IV.CSLB.HHN. ML:3.1 0.00126 0.88 AML other m 2020-10-24T13:56:30.48
IV.SCIAR.HNN. ML:3.1 0.00133 1.1 AML other m 2020-10-24T13:56:31.04
IV.SCIAR.HHN. ML:3.1 0.001215 1.52 AML other m 2020-10-24T13:56:31.04
IV.PLLN.EHN. ML:3.7 0.005695 0.68 AML other m 2020-10-24T13:56:31.15
IV.SCIAR.HHE. ML:2.9 0.000838 0.8 AML other m 2020-10-24T13:56:31.16
IV.SCIAR.HNE. ML:2.9 0.000789 0.5 AML other m 2020-10-24T13:56:31.16
IV.MSFR.HHE. ML:2.3 0.00021 1.24 AML other m 2020-10-24T13:56:31.91
IV.GIB.HHE. ML:3.5 0.003615 0.42 AML other m 2020-10-24T13:56:31.08
IV.PLLN.EHE. ML:3.3 0.00251 1.22 AML other m 2020-10-24T13:56:31.21
IV.CSLB.HHE. ML:2.8 0.0006755 0.44 AML other m 2020-10-24T13:56:34.25
IV.PETRA.HHN. ML:3.5 0.002695 0.6 AML other m 2020-10-24T13:56:35.11
IV.MSFR.HHN. ML:2.6 0.000344 0.76 AML other m 2020-10-24T13:56:35.27
IV.MUCR.HHE. ML:3.1 0.001136 0.58 AML other m 2020-10-24T13:56:37.01
IV.MUCR.HHN. ML:3.4 0.001775 0.76 AML other m 2020-10-24T13:56:37.38
IV.PETRA.HHE. ML:3.3 0.001935 0.48 AML other m 2020-10-24T13:56:37.48
IV.RESU.HHE. ML:2.9 0.000508 1.58 AML other m 2020-10-24T13:56:44.01
IV.GALF.HHE. ML:3.2 0.0011075 0.56 AML other m 2020-10-24T13:56:44.84
IV.RESU.HHN. ML:3 0.0007735 0.5 AML other m 2020-10-24T13:56:45.29
IV.MPNC.HHN. ML:3.1 0.0007125 1.32 AML other m 2020-10-24T13:56:45.15
IV.MPNC.HHE. ML:3 0.000615 1.48 AML other m 2020-10-24T13:56:48.23
IV.CET2.HHE. ML:2.4 8.76E-5 0.6 AML other m 2020-10-24T13:56:49.23
IV.CET2.HHN. ML:2.8 0.0002035 0.72 AML other m 2020-10-24T13:56:49.79
IV.HCRL.HHE. ML:2.6 0.00012615 1 AML other m 2020-10-24T13:56:51.42
IV.CAR1.HNN. ML:3.2 0.000519 0.28 AML other m 2020-10-24T13:56:52.15
IV.CAR1.HHN. ML:3.2 0.0004495 0.28 AML other m 2020-10-24T13:56:52.02
IV.CAR1.HHE. ML:3.3 0.0005645 1.72 AML other m 2020-10-24T13:56:52.99
IV.CAR1.HNE. ML:3.2 0.0004915 0.26 AML other m 2020-10-24T13:56:53.13
IV.GALF.HHN. ML:3.1 0.000926 1.58 AML other m 2020-10-24T13:56:54.04
MN.CLTB.HHE. ML:3.6 0.002095 1.44 AML other m 2020-10-24T13:56:57.07
MN.CLTB.HHN. ML:3.7 0.00237 1.38 AML other m 2020-10-24T13:56:58.70
IV.SSY.HHE. ML:3.2 0.000493 1.24 AML other m 2020-10-24T13:57:00.73
IV.RAFF.HHN. ML:2.8 0.000225 0.82 AML other m 2020-10-24T13:57:00.08
MN.CEL.HHN. ML:2.3 8.095E-5 0.4 AML other m 2020-10-24T13:57:00.95
IV.PLAC.HHE. ML:2.4 6.165E-5 1.32 AML other m 2020-10-24T13:57:01.28
MN.CEL.HHE. ML:2.3 8.14E-5 0.52 AML other m 2020-10-24T13:57:02.27
IV.PLAC.HHN. ML:2.5 7.28E-5 0.48 AML other m 2020-10-24T13:57:02.93
IV.RAFF.HHE. ML:2.8 0.0002615 0.54 AML other m 2020-10-24T13:57:03.66
IV.SSY.HHN. ML:3.5 0.000865 1.58 AML other m 2020-10-24T13:57:05.93
IV.HCRL.HHN. ML:2.6 0.00012535 0.88 AML other m 2020-10-24T13:57:08.75
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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