Earthquake with magnitude of ML 3.0 on date 21-05-2016 and time 17:53:05 (Italy) in region 3 km E Petralia Soprana (PA)

A magnitude ML 3.0 earthquake occured in region: 3 km E Petralia Soprana (PA), on

  • 21-05-2016 15:53:05 (UTC)
  • 21-05-2016 17:53:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8, 14.14 at 8 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
Petralia Soprana PA 3 3360 3360
Petralia Sottana PA 5 2821 6181
Gangi PA 5 6811 12992
Geraci Siculo PA 6 1945 14937
Bompietro PA 7 1401 16338
Blufi PA 8 1029 17367
Castellana Sicula PA 9 3411 20778
Alimena PA 13 2032 22810
Polizzi Generosa PA 13 3407 26217
San Mauro Castelverde PA 13 1701 27918
Castelbuono PA 16 8943 36861
Resuttano CL 17 2038 38899
Castel di Lucio ME 17 1294 40193
Sperlinga EN 19 805 40998
Isnello PA 20 1589 42587

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Caltanissetta (63360 inhabitants)
64 Km SE of Bagheria (55387 inhabitants)
74 Km NE of Agrigento (59770 inhabitants)
77 Km E of Palermo (674435 inhabitants)
82 Km N of Gela (75827 inhabitants)
89 Km W of Catania (314555 inhabitants)
92 Km W of Acireale (52622 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 last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. 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 last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 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 1985

Earthquakes since 1985 *

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.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006 *

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. 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
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
Bulletin
Rev1000
ML 3.0 2016-05-21
15:53:05
37.8 14.15 8 2016-11-08
11:48:47
Bollettino Sismico Italiano INGV 25635701
Reviewed
Rev100
ML 3.0 2016-05-21
15:53:06
37.8 14.12 8 2016-05-21
16:15:00
Sala Sismica INGV-Roma 25243901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-05-21 15:53:05 ± 0.06
Latitude 37.80 ± 0.00
Longitude 14.15 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 25635701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 34
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 44
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 1.30312
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:3

Field Value
Value 3
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 25635701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-06-06 10:18:45

ML:3

Field Value
Value 3
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 25243901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-05-21 16:14:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HPAC.HHE. 2016-05-21T15:53:29.50 0.6 undecidable manual P 147 1.3031 50 -0.42 35
IV.MTTG.HHE. 2016-05-21T15:53:29.34 0.6 undecidable manual P 80 1.242 50 0.47 35
IV.USI.HHZ. 2016-05-21T15:53:27.21 0.3 undecidable manual P 320 1.1799 50 -0.6 52
IV.MSRU.HHZ. 2016-05-21T15:53:27.63 0.6 undecidable manual P 66 1.1673 50 0.04 40
IV.HAVL.HHZ. 2016-05-21T15:53:26.89 0.3 undecidable manual P 137 1.1448 50 -0.32 56
IV.MPNC.HHN. 2016-05-21T15:53:25.06 0.6 undecidable manual P 70 1.0117 50 0.14 40
IV.SOLUN.HHZ. 2016-05-21T15:53:25.17 0.3 undecidable manual S 301 0.563 50 -0.41 63
IV.SSY.HHZ. 2016-05-21T15:53:24.15 0.3 undecidable manual P 131 0.9785 50 -0.21 60
IV.AGST.EHE. 2016-05-21T15:53:24.83 0.6 undecidable manual P 122 1.0162 50 -0.18 40
IV.HMDC.HHZ. 2016-05-21T15:53:24.13 0.3 undecidable manual P 149 0.9839 50 -0.32 58
IV.MMGO.SHZ. 2016-05-21T15:53:23.57 1.0 undecidable manual P 262 0.9344 50 -0.03 21
IV.ILLI.HHZ. 2016-05-21T15:53:23.42 0.6 undecidable manual P 44 0.9011 50 0.39 39
IV.HAGA.HHZ. 2016-05-21T15:53:23.59 0.3 undecidable manual P 123 0.9524 50 -0.33 59
IV.MEU.SHZ. 2016-05-21T15:53:22.71 0.6 undecidable manual P 142 0.8786 50 0.05 42
IV.AIO.HHZ. 2016-05-21T15:53:22.67 0.6 undecidable manual P 79 0.8741 50 0.1 42
IV.MNO.SHE. 2016-05-21T15:53:22.57 0.6 undecidable manual S 73 0.4524 50 0.26 44
IV.IVPL.HHZ. 2016-05-21T15:53:22.95 0.3 undecidable manual P 49 0.8714 50 0.42 59
IV.IFIL.HHZ. 2016-05-21T15:53:21.73 0.3 undecidable manual P 24 0.8328 50 -0.13 63
IV.NOV.HHZ. 2016-05-21T15:53:21.45 0.3 undecidable manual P 74 0.813 50 -0.08 64
IV.MSFR.HHZ. 2016-05-21T15:53:21.08 0.3 undecidable manual S 57 0.4209 50 -0.3 66
IV.IACL.HHZ. 2016-05-21T15:53:20.62 0.3 undecidable manual P 13 0.7482 50 0.2 63
IV.HVZN.HHE. 2016-05-21T15:53:20.79 0.6 undecidable manual P 144 0.7707 50 -0.01 44
IV.MPG.SHE. 2016-05-21T15:53:20.30 0.3 undecidable manual P 300 0.715 50 0.45 60
MN.CLTB.HHN. 2016-05-21T15:53:20.82 1.0 undecidable manual P 253 0.768 50 0.06 22
IV.GALF.HHZ. 2016-05-21T15:53:19.55 0.3 undecidable manual S 105 0.3453 50 0.41 66
IV.CLTA.HHZ. 2016-05-21T15:53:19.49 0.6 undecidable manual P 193 0.6601 50 0.57 39
IV.HLNI.HHZ. 2016-05-21T15:53:19.88 0.6 undecidable manual P 128 0.7329 50 -0.28 42
IV.ESLN.HHZ. 2016-05-21T15:53:19.39 1.0 undecidable manual P 99 0.6646 50 0.41 20
IV.FAVR.HHN. 2016-05-21T15:53:19.18 1.0 undecidable manual P 215 0.6556 50 0.34 21
IV.ALJA.HHZ. 2016-05-21T15:53:18.78 0.3 undecidable manual S 260 0.3139 50 0.57 63
IV.CAGR.HHZ. 2016-05-21T15:53:18.79 0.3 undecidable manual S 123 0.3336 50 0 72
IV.SOLUN.HHZ. 2016-05-21T15:53:17.05 0.3 undecidable manual P 301 0.563 50 -0.19 66
IV.EPZF.HHZ. 2016-05-21T15:53:17.76 0.6 undecidable manual P 88 0.5621 50 0.52 41
IV.CMDO.HHZ. 2016-05-21T15:53:15.39 1.0 undecidable manual P 217 0.4236 50 0.52 21
IV.MNO.SHE. 2016-05-21T15:53:15.15 0.6 undecidable manual P 73 0.4524 50 -0.21 45
IV.MSFR.HHZ. 2016-05-21T15:53:14.31 0.1 undecidable manual P 57 0.4209 50 -0.51 84
IV.PLLN.EHZ. 2016-05-21T15:53:14.24 0.3 undecidable manual S 359 0.1898 112 0.51 66
IV.GIB.HHZ. 2016-05-21T15:53:14.47 0.3 undecidable manual S 333 0.2095 110 0.03 73
IV.GALF.HHZ. 2016-05-21T15:53:13.35 0.3 undecidable manual P 105 0.3453 50 -0.17 69
IV.RESU.HHZ. 2016-05-21T15:53:13.43 0.3 undecidable manual S 204 0.1709 114 0.38 68
IV.CAGR.HHZ. 2016-05-21T15:53:13.86 0.3 undecidable manual P 123 0.3336 50 0.54 64
IV.ALJA.HHZ. 2016-05-21T15:53:12.78 0.1 undecidable manual P 260 0.3139 50 -0.21 92
IV.CSLB.HHZ. 2016-05-21T15:53:12.58 0.3 undecidable manual S 333 0.1511 117 0.21 71
IV.PLLN.EHZ. 2016-05-21T15:53:10.23 0.1 undecidable manual P 359 0.1898 112 -0.17 95
IV.GIB.HHZ. 2016-05-21T15:53:10.79 0.1 undecidable manual P 333 0.2095 110 -0.02 97
IV.CSLB.HHZ. 2016-05-21T15:53:09.38 0.1 undecidable manual P 333 0.1511 117 -0.24 94
IV.PETRA.HHZ. 2016-05-21T15:53:09.03 0.3 undecidable manual S 322 0.0387 153 -0.1 74
IV.RESU.HHZ. 2016-05-21T15:53:09.61 0.1 undecidable manual P 204 0.1709 114 -0.4 91
IV.PETRA.HHZ. 2016-05-21T15:53:07.80 0.1 undecidable manual P 322 0.0387 153 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHN. ML:2.8 0.000699 0.44 AML other m 2016-05-21T15:53:43.90
IV.AIO.HHE. ML:2.9 0.000809 0.42 AML other m 2016-05-21T15:53:44.70
IV.ALJA.HHE. ML:3.1 0.00497 0.48 AML other m 2016-05-21T15:53:21.41
IV.ALJA.HHN. ML:3 0.004255 0.28 AML other m 2016-05-21T15:53:23.72
IV.CAGR.HHN. ML:3.1 0.005095 0.46 AML other m 2016-05-21T15:53:26.22
IV.CAGR.HHE. ML:3 0.004235 0.38 AML other m 2016-05-21T15:53:27.64
IV.CAR1.HHE. ML:0 0.0001088 1.3 AML other m 2016-05-21T15:54:18.91
IV.CAR1.HHN. ML:0 0.0001485 0.72 AML other m 2016-05-21T15:54:28.19
IV.CLTA.HHE. ML:2.9 0.00137 0.5 AML other m 2016-05-21T15:53:36.23
IV.CLTA.HHN. ML:2.9 0.00118 1.16 AML other m 2016-05-21T15:53:36.31
IV.CSLB.HHN. ML:2.8 0.005545 0.8 AML other m 2016-05-21T15:53:14.73
IV.CSLB.HHE. ML:2.7 0.00424 0.24 AML other m 2016-05-21T15:53:15.08
IV.EPZF.HHN. ML:3 0.002015 0.58 AML other m 2016-05-21T15:53:35.08
IV.EPZF.HHE. ML:3 0.001835 0.88 AML other m 2016-05-21T15:53:35.32
IV.GALF.HHN. ML:2.9 0.002765 0.38 AML other m 2016-05-21T15:53:27.33
IV.GALF.HHE. ML:3 0.003365 0.4 AML other m 2016-05-21T15:53:28.11
IV.GIB.HHN. ML:3.3 0.0133 0.34 AML other m 2016-05-21T15:53:17.19
IV.GIB.HHE. ML:3.3 0.01405 0.44 AML other m 2016-05-21T15:53:19.44
IV.HAGA.HHE. ML:2.6 0.000412 1.58 AML other m 2016-05-21T15:53:40.88
IV.HAGA.HHN. ML:2.6 0.0003235 0.84 AML other m 2016-05-21T15:53:41.80
IV.HAVL.HHN. ML:3 0.000753 1.54 AML other m 2016-05-21T15:53:48.86
IV.HAVL.HHE. ML:3 0.000666 0.88 AML other m 2016-05-21T15:53:50.07
IV.HLNI.HHE. ML:2.4 0.0003185 1.58 AML other m 2016-05-21T15:53:41.32
IV.HLNI.HHN. ML:2.4 0.0003415 0.24 AML other m 2016-05-21T15:53:36.03
IV.HMDC.HHE. ML:2.7 0.0004535 0.62 AML other m 2016-05-21T15:53:45.02
IV.HMDC.HHN. ML:2.7 0.0004585 1.58 AML other m 2016-05-21T15:53:44.37
IV.IACL.HHN. ML:3.1 0.001765 0.86 AML other m 2016-05-21T15:53:34.77
IV.IACL.HHE. ML:3 0.00145 0.98 AML other m 2016-05-21T15:53:34.78
IV.IFIL.HHE. ML:3.6 0.005265 0.72 AML other m 2016-05-21T15:53:39.36
IV.IFIL.HHN. ML:3.2 0.00196 1.46 AML other m 2016-05-21T15:53:37.60
IV.IVPL.HHE. ML:3.5 0.00343 0.46 AML other m 2016-05-21T15:53:43.95
IV.IVPL.HHN. ML:3.6 0.00415 0.52 AML other m 2016-05-21T15:53:38.71
IV.MEU.SHE. ML:0 0.000662 0.68 AML other m 2016-05-21T15:53:48.86
IV.MEU.SHN. ML:0 0.0009725 0.4 AML other m 2016-05-21T15:53:47.98
IV.MSFR.HHN. ML:2.6 0.001066 1.02 AML other m 2016-05-21T15:53:25.09
IV.MSFR.HHE. ML:2.4 0.0007335 0.68 AML other m 2016-05-21T15:53:28.99
IV.MSRU.HHE. ML:3.1 0.0009385 0.7 AML other m 2016-05-21T15:53:53.13
IV.MSRU.HHN. ML:3 0.00067 1.44 AML other m 2016-05-21T15:53:52.35
IV.NOV.HHE. ML:2.9 0.0008925 0.46 AML other m 2016-05-21T15:53:44.88
IV.NOV.HHN. ML:2.8 0.0006605 0.76 AML other m 2016-05-21T15:53:50.40
IV.PETRA.HHN. ML:0 0.0358 0.32 AML other m 2016-05-21T15:53:10.34
IV.PETRA.HHE. ML:0 0.05795 0.28 AML other m 2016-05-21T15:53:12.16
IV.PLLN.EHE. ML:3 0.007435 0.38 AML other m 2016-05-21T15:53:17.61
IV.PLLN.EHN. ML:3.2 0.011 0.34 AML other m 2016-05-21T15:53:16.90
IV.RESU.HHE. ML:3.2 0.01295 1.18 AML other m 2016-05-21T15:53:15.64
IV.RESU.HHN. ML:3.1 0.0113 1.14 AML other m 2016-05-21T15:53:15.47
IV.SOLUN.HHE. ML:2.9 0.001585 0.6 AML other m 2016-05-21T15:53:31.00
IV.SOLUN.HHN. ML:2.6 0.0007855 0.5 AML other m 2016-05-21T15:53:31.26
IV.SSY.HHN. ML:3.2 0.001465 0.56 AML other m 2016-05-21T15:53:44.56
IV.SSY.HHE. ML:2.9 0.0006565 0.42 AML other m 2016-05-21T15:53:48.82
IV.USI.HHE. ML:3.2 0.000938 0.9 AML other m 2016-05-21T15:53:51.39
IV.USI.HHN. ML:3.3 0.00141 0.64 AML other m 2016-05-21T15:53:55.94
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

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 full SEED format Download