Earthquake with magnitude of ML 3.1 on date 11-05-2020 and time 06:01:11 (UTC) in region Tirreno Meridionale (MARE)

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

  • 11-05-2020 06:01:11 (UTC)
  • 11-05-2020 08:01:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.4940, 13.7740 at 24 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
51 Km NE of Bagheria (55387 inhabitants)
55 Km NE of Palermo (674435 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

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 updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 3.1 2020-05-11
06:01:11
38.4935 13.7745 24 2020-11-19
12:36:45
Bollettino Sismico Italiano INGV 79357381
Reviewed
Rev100
ML 3.2 2020-05-11
06:01:11
38.4598 13.7257 30 2020-05-11
06:14:10
Sala Sismica INGV-Roma 79038901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-11 06:01:11 ± 0.17
Latitude 38.4935 ± 0.0126
Longitude 13.7745 ± 0.0103
Depth (km) 24 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79357381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1013
Semi-minor axis of confidence ellipse (meter) 1002
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
Circular confidence region, given by single value of horizontal uncertainty (meter) 1010.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 67
Number of defining phases 60
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.49
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.08463
Number of stations at which the event was observed 57
Number of stations from which data was used for origin computation 50
Magnitudes information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 79357381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-20 09:14:53

ML:3.2

Field Value
Value 3.2
Uncertainty 0.4
Num. used stations 40
Type of magnitude ML
Reference to an origin 79038901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-11 06:14:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-05-11T06:02:42.94 3.0 negative manual Pg 11.04 0
IV.CPGN.EHZ. 2020-05-11T06:02:38.38 3.0 negative manual Pn 1.02 0
IV.RMP.HHZ. 2020-05-11T06:02:15.94 3.0 positive manual Pg 5.82 0
IV.MRB1.HHZ. 2020-05-11T06:01:54.44 3.0 undecidable manual Pn -4.6 0
IV.MSRU.HHZ. 2020-05-11T06:01:52.13 0.6 undecidable manual S 99 152.9358 54 -1.43 26
IV.SPS2.HHZ. 2020-05-11T06:01:47.07 3.0 negative manual Pn 0.07 0
IV.PLAC.HHZ. 2020-05-11T06:01:45.28 0.3 undecidable manual P 90 231.3906 54 -0.11 44
IV.GRI.EHZ. 2020-05-11T06:01:45.21 3.0 undecidable manual P 0
IV.CAR1.HHZ. 2020-05-11T06:01:44.60 0.6 undecidable manual P 67 226.7064 54 -0.2 29
IV.SOI.EHZ. 2020-05-11T06:01:41.56 0.6 undecidable manual P 103 203.9403 54 -0.41 32
IV.CRJA.HHZ. 2020-05-11T06:01:41.55 0.6 undecidable manual S 221 102.0201 98 0.52 46
IV.MUCR.HHZ. 2020-05-11T06:01:41.04 0.3 undecidable manual S 117 108.0141 98 -1.59 41
IV.AGST.EHZ. 2020-05-11T06:01:40.12 0.3 undecidable manual P 137 187.0683 54 0.24 56
MN.CEL.HHZ. 2020-05-11T06:01:39.01 0.3 undecidable manual P 97 186.0693 54 -0.74 48
IV.SSY.HNZ. 2020-05-11T06:01:39.53 0.6 undecidable manual P 142 186.8685 54 -0.32 36
IV.MEU.EHZ. 2020-05-11T06:01:39.21 0.6 undecidable manual P 149 179.0874 54 0.33 38
IV.ACATE.HNZ. 2020-05-11T06:01:39.38 0.6 undecidable manual P 158 174.9915 54 1.01 31
IV.MTTG.HHZ. 2020-05-11T06:01:38.32 0.6 undecidable manual P 107 176.3901 54 -0.22 39
IV.JOPP.HHZ. 2020-05-11T06:01:38.90 0.3 undecidable manual P 85 183.5829 54 -0.54 53
IV.HAGA.HHZ. 2020-05-11T06:01:38.96 0.3 undecidable manual P 138 180.486 54 -0.09 59
IV.MBFT.HNZ. 2020-05-11T06:01:38.06 0.6 undecidable manual S 230 93.8394 99 -0.82 42
IV.MSFR.HHZ. 2020-05-11T06:01:37.66 0.6 undecidable manual S 125 87.5457 100 0.44 49
IV.RAFF.HHZ. 2020-05-11T06:01:36.43 0.3 undecidable manual P 160 150.1386 54 1.16 48
IV.CLTA.HHZ. 2020-05-11T06:01:36.76 0.3 undecidable manual P 174 149.0397 54 1.62 38
IV.HLNI.HHZ. 2020-05-11T06:01:36.53 0.3 undecidable manual P 143 159.2184 54 0.12 66
IV.MSRU.HHZ. 2020-05-11T06:01:34.85 0.3 undecidable manual P 99 152.9358 54 -0.77 55
IV.ESML.HHZ. 2020-05-11T06:01:34.59 0.6 undecidable manual P 135 136.9629 54 0.96 36
IV.CORL.HHZ. 2020-05-11T06:01:34.98 0.6 undecidable manual S 212 78.1662 101 0.24 52
IV.ESLN.HHZ. 2020-05-11T06:01:34.49 0.6 undecidable manual P 130 137.2626 54 0.81 39
IV.AIO.HHZ. 2020-05-11T06:01:33.27 0.3 undecidable manual P 114 139.6602 54 -0.7 59
IV.MARS.EHZ. 2020-05-11T06:01:33.43 0.3 undecidable manual P 232 133.7661 54 0.19 70
IV.ECHR.HNZ. 2020-05-11T06:01:33.71 0.6 undecidable manual P 132 133.7661 54 0.47 44
IV.CPTP.HHZ. 2020-05-11T06:01:33.20 0.3 undecidable manual P 164 125.1747 96 1.27 47
IV.MPNC.HHZ. 2020-05-11T06:01:33.78 0.3 undecidable manual P 105 142.6461 54 -0.56 62
IV.CAVT.HHZ. 2020-05-11T06:01:32.15 0.3 undecidable manual P 225 126.7731 96 -0.03 73
IV.ISTR.HHZ. 2020-05-11T06:01:32.15 0.3 undecidable manual P 75 127.0728 96 -0.07 73
IV.EMSG.HHZ. 2020-05-11T06:01:32.48 0.6 undecidable manual P 126 126.7731 96 0.3 46
MN.VAE.HHZ. 2020-05-11T06:01:32.86 0.6 undecidable manual P 156 124.3866 96 1.04 35
IV.EPZF.HHZ. 2020-05-11T06:01:31.86 0.3 undecidable manual P 128 120.0909 97 0.7 62
IV.LEVAN.EHZ. 2020-05-11T06:01:31.86 0.3 undecidable manual P 246 136.3635 54 -1.7 35
IV.SCIAC.HHZ. 2020-05-11T06:01:31.26 0.3 undecidable manual P 209 123.2877 97 -0.38 69
IV.CAGR.HHZ. 2020-05-11T06:01:31.66 0.6 undecidable manual P 147 115.5954 97 1.2 33
IV.PLLN.EHZ. 2020-05-11T06:01:31.01 0.6 undecidable manual S 150 64.1913 104 -0.1 55
IV.ERC.EHZ. 2020-05-11T06:01:30.05 0.3 undecidable manual P 244 115.0959 97 -0.34 71
IV.CSLB.HHZ. 2020-05-11T06:01:30.70 0.3 undecidable manual S 158 66.4779 103 -1 61
IV.MUCR.HHZ. 2020-05-11T06:01:29.41 0.1 undecidable manual P 117 108.0141 98 0.1 100
IV.ILLI.HHZ. 2020-05-11T06:01:29.14 3.0 positive manual P 0.48 0
IV.MFNL.HHZ. 2020-05-11T06:01:29.53 0.3 undecidable manual P 224 107.7144 98 0.27 73
IV.GIB.HHZ. 2020-05-11T06:01:29.40 0.3 undecidable manual S 158 59.9955 105 -0.62 72
IV.MCT.HHZ. 2020-05-11T06:01:29.96 0.3 undecidable manual P 189 98.124 98 2.16 26
IV.IVUG.HHZ. 2020-05-11T06:01:28.69 0.3 undecidable manual P 95 105.8163 98 -0.28 73
IV.GALF.HHZ. 2020-05-11T06:01:28.93 0.6 undecidable manual P 141 111 97 -0.83 40
IV.IVGP.HHZ. 2020-05-11T06:01:28.04 0.6 undecidable manual P 96 103.6185 98 -0.6 45
IV.CRJA.HHZ. 2020-05-11T06:01:28.84 0.3 undecidable manual P 221 102.0201 98 0.45 71
IV.IVPL.HHZ. 2020-05-11T06:01:28.22 0.6 undecidable manual P 97 105.5166 98 -0.71 43
IV.RESU.HHZ. 2020-05-11T06:01:28.82 0.3 undecidable manual P 165 97.125 99 1.18 53
IV.MBFT.HNZ. 2020-05-11T06:01:26.81 0.3 undecidable manual P 230 93.8394 99 -0.33 74
IV.MSFR.HHZ. 2020-05-11T06:01:26.50 0.1 undecidable manual P 125 87.5457 100 0.31 100
IV.MPG.HHZ. 2020-05-11T06:01:25.94 0.6 undecidable manual S 225 51.5151 108 -1.92 24
IV.IFIL.HHZ. 2020-05-11T06:01:24.31 0.3 undecidable manual P 83 69.9744 102 0.79 65
IV.CORL.HHZ. 2020-05-11T06:01:23.72 0.6 undecidable manual P 212 78.1662 101 -1.04 39
IV.PLLN.EHZ. 2020-05-11T06:01:22.62 0.3 undecidable manual P 150 64.1913 104 -0.04 83
IV.CSLB.HHZ. 2020-05-11T06:01:22.86 0.3 undecidable manual P 158 66.4779 103 -0.14 81
IV.GIB.HHZ. 2020-05-11T06:01:21.92 0.3 undecidable manual P 158 59.9955 105 -0.11 82
IV.IACL.HHZ. 2020-05-11T06:01:21.63 0.1 undecidable manual P 85 50.616 108 0.99 82
IV.USI.HHZ. 2020-05-11T06:01:21.99 0.3 undecidable manual P 295 56.7987 106 0.43 76
IV.MPG.HHZ. 2020-05-11T06:01:19.62 0.3 undecidable manual P 225 51.5151 108 -1.16 58
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSFR.HHE. ML:3.0 0.0011040000000000002 0.54 AML other m 2020-05-11T06:01:42.32
IV.MUCR.HHN. ML:3.4 0.0024100000000000002 0.38 AML other m 2020-05-11T06:01:43.54
IV.MSFR.HHN. ML:3.0 0.001085 0.54 AML other m 2020-05-11T06:01:44.76
IV.GALF.HNN. ML:2.8 0.0004545 0.58 AML other m 2020-05-11T06:01:49.22
IV.GALF.HHN. ML:3.5 0.002705 0.6 AML other m 2020-05-11T06:01:49.22
IV.IVPL.HHN. ML:3.4 0.0020350000000000004 0.7 AML other m 2020-05-11T06:01:50.61
IV.GALF.HNE. ML:2.7 0.0003865 1.52 AML other m 2020-05-11T06:01:52.91
IV.EPZF.HHE. ML:3.4 0.00193 0.62 AML other m 2020-05-11T06:01:53.55
IV.EPZF.HHN. ML:3.6 0.00328 0.54 AML other m 2020-05-11T06:01:53.32
IV.IVPL.HHE. ML:3.3 0.0018650000000000001 0.6 AML other m 2020-05-11T06:01:54.68
IV.MUCR.HHE. ML:3.4 0.00212 0.52 AML other m 2020-05-11T06:01:55.07
IV.AIO.HHE. ML:3.1 0.000671 1.48 AML other m 2020-05-11T06:01:57.97
IV.MPNC.HHN. ML:3.3 0.001166 0.76 AML other m 2020-05-11T06:02:00.89
IV.JOPP.HHE. ML:2.7 0.000185 0.64 AML other m 2020-05-11T06:02:01.03
IV.JOPP.HHN. ML:2.7 0.00016 1.66 AML other m 2020-05-11T06:02:01.11
IV.MSRU.HHE. ML:3.1 0.0006465 1.12 AML other m 2020-05-11T06:02:02.38
IV.GALF.HHE. ML:3.6 0.00304 0.52 AML other m 2020-05-11T06:02:02.96
IV.MSRU.HHN. ML:3.1 0.0005865 1.42 AML other m 2020-05-11T06:02:04.79
IV.AIO.HHN. ML:3.0 0.0006225 0.56 AML other m 2020-05-11T06:02:05.64
IV.HAGA.HHN. ML:3.1 0.000429 0.34 AML other m 2020-05-11T06:02:08.37
IV.MPNC.HHE. ML:3.4 0.00158 1.16 AML other m 2020-05-11T06:02:11.69
IV.SOI.EHE. ML:3.1 0.0003715 0.7 AML other m 2020-05-11T06:02:11.80
MN.CEL.HNE. ML:2.8 0.00023249999999999999 0.42 AML other m 2020-05-11T06:02:13.30
MN.CEL.HHE. ML:2.8 0.00021700000000000002 0.42 AML other m 2020-05-11T06:02:13.30
IV.SOI.EHN. ML:3.0 0.00028149999999999996 0.64 AML other m 2020-05-11T06:02:13.53
IV.PLAC.HHE. ML:3.0 0.000216 0.54 AML other m 2020-05-11T06:02:13.53
MN.CEL.HNN. ML:2.8 0.000231 0.46 AML other m 2020-05-11T06:02:16.54
MN.CEL.HHN. ML:2.8 0.00022399999999999997 0.5 AML other m 2020-05-11T06:02:17.54
IV.HAGA.HHE. ML:3.1 0.00043599999999999997 1.44 AML other m 2020-05-11T06:02:17.13
IV.PLAC.HHN. ML:2.9 0.0001595 0.58 AML other m 2020-05-11T06:02:18.65
IV.CAR1.HHE. ML:3.0 0.00020899999999999998 1.48 AML other m 2020-05-11T06:02:24.07
IV.CAR1.HHN. ML:2.8 0.0001435 0.86 AML other m 2020-05-11T06:02:25.77
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