Earthquake with magnitude of ML 2.9 on date 21-09-2016 and time 01:15:19 (UTC) in region Tirreno Meridionale (MARE)

A magnitude ML 2.9 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 21-09-2016 01:15:19 (UTC)
  • 21-09-2016 03:15:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.4930, 12.5860 at 26 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
53 Km N of Trapani (68759 inhabitants)
78 Km N of Marsala (83194 inhabitants)
80 Km NW of Palermo (674435 inhabitants)
93 Km NW of Bagheria (55387 inhabitants)
94 Km N 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 2.9 2016-09-21
01:15:19
38.4933 12.5855 26 2017-06-27
11:12:35
Bollettino Sismico Italiano INGV 46483231
Reviewed
Rev100
ML 3.2 2016-09-21
01:15:17
38.5255 12.5195 4 2016-09-21
01:57:47
Sala Sismica INGV-Roma 29312821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-21 01:15:19 ± 0.36
Latitude 38.4933 ± 0.0198
Longitude 12.5855 ± 0.0230
Depth (km) 26 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 46483231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1849
Semi-minor axis of confidence ellipse (meter) 1723
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 149
Circular confidence region, given by single value of horizontal uncertainty (meter) 1850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.45506
Epicentral distance of station farthest from the epicenter (degree) 2.93539
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:3.2

Field Value
Value 3.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 29312821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-21 01:57:45

ML:2.9

Field Value
Value 2.9
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 46483231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-06-09 23:01:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.DGI.HHZ. 2016-09-21T01:16:05.48 0.3 undecidable manual P 309 325.8294 54 0.49 18
IV.CGL.SHZ. 2016-09-21T01:16:02.13 0.1 undecidable manual P 290 299.8776 54 0.36 25
MN.VSL.HHZ. 2016-09-21T01:16:01.70 0.1 undecidable manual P 293 298.0794 54 0.16 27
IV.MTTG.HHZ. 2016-09-21T01:15:59.16 0.3 undecidable manual P 100 276.7119 54 0.28 26
IV.HAGA.HHZ. 2016-09-21T01:15:58.11 0.3 undecidable manual P 120 261.8379 54 1.08 22
IV.HLNI.HHZ. 2016-09-21T01:15:55.01 0.3 undecidable manual P 122 236.985 54 1.07 27
IV.MSFR.HHZ. 2016-09-21T01:15:46.35 0.3 undecidable manual P 106 181.9845 54 -0.75 43
IV.RESU.HHZ. 2016-09-21T01:15:45.72 0.6 undecidable manual P 126 159.1185 54 1.47 23
IV.IFIL.HHZ. 2016-09-21T01:15:44.65 0.3 undecidable manual P 87 172.8936 54 -1.31 34
IV.PETRA.HHZ. 2016-09-21T01:15:43.68 0.3 undecidable manual P 118 152.1366 54 0.3 58
IV.MPG.SHZ. 2016-09-21T01:15:43.05 0.3 undecidable manual S 118 76.7676 103 0.41 68
IV.PLLN.EHZ. 2016-09-21T01:15:42.49 0.3 undecidable manual P 112 146.6421 54 -0.2 60
IV.IACL.HHE. 2016-09-21T01:15:42.07 0.6 undecidable manual P 88 153.6351 54 -1.5 23
IV.GIB.HHE. 2016-09-21T01:15:41.51 0.3 undecidable manual P 114 137.3625 54 -0.03 63
IV.CSLB.HHZ. 2016-09-21T01:15:41.87 0.3 undecidable manual P 115 142.3464 54 -0.29 59
MN.CLTB.HHZ. 2016-09-21T01:15:39.34 0.1 undecidable manual P 151 115.4955 98 0.73 75
IV.USI.HHZ. 2016-09-21T01:15:37.91 0.6 undecidable manual S 65 56.6988 109 0.42 47
IV.CORL.HHZ. 2016-09-21T01:15:35.45 0.3 undecidable manual P 136 91.3419 101 0.52 64
IV.ERC.EHZ. 2016-09-21T01:15:35.62 0.6 undecidable manual S 180 50.5161 111 -0.32 47
IV.CRJA.SHZ. 2016-09-21T01:15:34.35 0.1 undecidable manual P 154 84.9483 102 0.38 89
IV.SOLUN.HHE. 2016-09-21T01:15:34.73 0.3 undecidable manual P 118 93.7395 101 -0.56 60
IV.MFNL.SHZ. 2016-09-21T01:15:34.35 0.3 undecidable manual P 159 83.25 102 0.63 62
IV.MPG.SHZ. 2016-09-21T01:15:31.79 0.1 undecidable manual P 118 76.7676 103 -0.95 70
IV.USI.HHZ. 2016-09-21T01:15:29.80 0.1 undecidable manual P 65 56.6988 109 0.04 100
IV.ERC.EHZ. 2016-09-21T01:15:27.36 0.1 undecidable manual P 180 50.5161 111 -1.51 55
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CLTB.HHE. ML:3.7 0.003505 0.44 AML other m 2016-09-21T01:16:02.96
MN.CLTB.HHN. ML:3.9 0.00553 0.5 AML other m 2016-09-21T01:16:03.26
IV.CORL.HHN. ML:3.0 0.001054 0.42 AML other m 2016-09-21T01:15:48.73
IV.CORL.HHE. ML:3.1 0.0015408344999999998 1.1 AML other m 2016-09-21T01:15:51.39
IV.CSLB.HHE. ML:2.3 0.000112 0.46 AML other m 2016-09-21T01:16:03.22
IV.CSLB.HHN. ML:2.3 0.00010664999999999999 0.68 AML other m 2016-09-21T01:16:10.14
IV.ERC.EHN. ML:3.1 0.0030600000000000002 0.38 AML other m 2016-09-21T01:15:37.76
IV.ERC.EHE. ML:3.1 0.0028250000000000003 0.26 AML other m 2016-09-21T01:15:37.47
IV.HLNI.HHE. ML:2.5 0.00006035 0.62 AML other m 2016-09-21T01:16:25.63
IV.HLNI.HHN. ML:2.6 0.0000751 0.38 AML other m 2016-09-21T01:16:27.55
IV.MPG.SHN. ML:0.0 0.0006145 1.56 AML other m 2016-09-21T01:15:44.07
IV.MPG.SHE. ML:0.0 0.000537 0.4 AML other m 2016-09-21T01:15:46.57
IV.MTTG.HHE. ML:2.5 0.000051000000000000006 0.42 AML other m 2016-09-21T01:16:19.49
IV.MTTG.HHN. ML:2.5 0.00005205 1.4 AML other m 2016-09-21T01:16:47.18
IV.PETRA.HHE. ML:2.8 0.00027150000000000004 0.48 AML other m 2016-09-21T01:16:11.59
IV.PETRA.HHN. ML:2.8 0.000305 0.42 AML other m 2016-09-21T01:16:12.31
IV.PLLN.EHE. ML:2.7 0.00028100000000000005 0.62 AML other m 2016-09-21T01:16:09.35
IV.PLLN.EHN. ML:3.0 0.000484 0.62 AML other m 2016-09-21T01:16:11.47
IV.USI.HHE. ML:3.2 0.0029898315000000003 1.48 AML other m 2016-09-21T01:15:46.09
IV.USI.HHN. ML:3.6 0.0077576565 0.58 AML other m 2016-09-21T01:15:44.45
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