Earthquake with magnitude of ML 2.8 on date 21-07-2019 and time 11:41:33 (Italy) in region 7 km NW Sciacca (AG)

A magnitude ML 2.8 earthquake occured in region: 7 km NW Sciacca (AG), on

  • 21-07-2019 09:41:33 (UTC)
  • 21-07-2019 11:41:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.56, 13.04 at 10 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
Sciacca AG 7 40928 40928
Menfi AG 8 12592 53520
Sambuca di Sicilia AG 12 5877 59397
Santa Margherita di Belice AG 15 6363 65760
Caltabellotta AG 16 3681 69441
Montevago AG 17 3006 72447

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Mazara del Vallo (51718 inhabitants)
56 Km NW of Agrigento (59770 inhabitants)
59 Km E of Marsala (83194 inhabitants)
68 Km SW of Palermo (674435 inhabitants)
69 Km SE of Trapani (68759 inhabitants)
71 Km SW of Bagheria (55387 inhabitants)
91 Km W of Caltanissetta (63360 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.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

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
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
Rev 1000 ML 2.8 2019-07-21
09:41:33
37.56 13.04 10 2019-11-13
14:31:00
Bollettino Sismico Italiano INGV 71937591
Rev 100 ML 2.8 2019-07-21
09:41:33
37.56 13.03 10 2019-07-21
10:07:42
Sala Sismica INGV-Roma 70765121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-21 09:41:33 ± 0.29
Latitude 37.56 ± 0.01
Longitude 13.04 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 71937591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1464
Semi-minor axis of confidence ellipse (meter) 911
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 322
Circular confidence region, given by single value of horizontal uncertainty (meter) 1460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 27
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
Epicentral distance of station farthest from the epicenter (degree) 1.52885
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.8

Field Value
Value 2.8
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 71937591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-27 12:01:22

ML:2.8

Field Value
Value 2.8
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 70765121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-21 10:07:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MELA.HHZ. 2019-07-21T09:43:36.13 3.0 undecidable manual Sn -0.22 0
IV.LRP.EHZ. 2019-07-21T09:43:23.98 3.0 undecidable manual Sn -3.61 0
IV.MMUR.HNZ. 2019-07-21T09:43:20.35 3.0 negative manual Pg 17.23 0
IX.CLT3.HHZ.02 2019-07-21T09:43:14.06 3.0 undecidable manual Sn -7.12 0
IV.CAR1.HHZ. 2019-07-21T09:43:04.10 3.0 undecidable manual Sn 1.16 0
IT.VNF1.HGZ. 2019-07-21T09:42:38.49 3.0 negative manual Pn 1.05 0
IV.MRB1.HNZ. 2019-07-21T09:42:37.65 3.0 undecidable manual Pn 1.83 0
MN.VSL.HHZ. 2019-07-21T09:42:29.00 3.0 negative manual Pn -1.17 0
IV.MUCR.HHZ. 2019-07-21T09:42:04.77 0.3 undecidable manual P 71 1.5288 50 3.74 0
IV.MNO.SHZ. 2019-07-21T09:42:02.53 0.3 undecidable manual P 74 1.3625 50 4.36 0
IV.GALF.HHZ. 2019-07-21T09:42:01.27 0.6 undecidable manual P 82 1.2204 50 5.52 0
IV.MSFR.HHZ. 2019-07-21T09:42:00.29 0.3 undecidable manual P 68 1.3166 50 2.9 0
IV.PLLN.EHZ. 2019-07-21T09:41:55.44 0.3 undecidable manual P 63 0.9758 50 3.88 0
IV.CSLB.HHZ. 2019-07-21T09:41:54.00 0.1 undecidable manual P 65 0.8912 50 3.88 0
IV.RESU.HHZ. 2019-07-21T09:41:54.24 0.3 undecidable manual P 83 0.8121 50 5.47 0
IV.PETRA.HHZ. 2019-07-21T09:41:54.43 0.3 undecidable manual P 72 0.8957 50 4.24 0
IV.GIB.HHZ. 2019-07-21T09:41:53.92 0.3 undecidable manual P 61 0.8921 50 3.79 0
IV.CMDO.HHZ. 2019-07-21T09:41:51.69 0.1 undecidable manual P 98 0.6304 50 6.03 0
IV.FAVR.HHZ. 2019-07-21T09:41:50.68 0.1 undecidable manual P 120 0.5792 50 5.9 0
IV.ALJA.HHZ. 2019-07-21T09:41:49.26 0.3 undecidable manual P 71 0.598 50 4.16 0
IV.ERC.EHN. 2019-07-21T09:41:47.67 0.3 undecidable manual P 324 0.5954 50 2.61 0
IV.MBFT.HHZ. 2019-07-21T09:41:47.02 0.3 undecidable manual S 350 0.3921 50 -0.66 37
IV.CORL.HHZ. 2019-07-21T09:41:47.68 0.3 undecidable manual S 32 0.3957 50 -0.11 41
IV.SOLUN.HHZ. 2019-07-21T09:41:46.25 0.1 undecidable manual P 36 0.661 50 0.07 0
IV.CRJA.HHZ. 2019-07-21T09:41:43.68 0.3 undecidable manual S 354 0.2437 109 0.48 69
IV.CAVT.HHZ. 2019-07-21T09:41:43.68 0.3 undecidable manual S 298 0.2527 109 0.16 73
IV.MFNL.HHZ. 2019-07-21T09:41:43.91 0.6 undecidable manual S 339 0.2482 109 0.54 45
IV.MARS.EHZ. 2019-07-21T09:41:42.30 0.1 undecidable manual P 298 0.4209 50 0.23 39
IV.CORL.HHZ. 2019-07-21T09:41:41.97 0.1 undecidable manual P 32 0.3957 50 0.32 52
IV.MBFT.HHZ. 2019-07-21T09:41:41.25 0.1 undecidable manual P 350 0.3921 50 -0.33 54
IV.CRJA.HHZ. 2019-07-21T09:41:39.15 0.1 undecidable manual P 354 0.2437 109 0.15 98
IV.CAVT.HHZ. 2019-07-21T09:41:39.24 0.1 undecidable manual P 298 0.2527 109 0.06 100
IV.MFNL.HHZ. 2019-07-21T09:41:39.24 0.1 undecidable manual P 339 0.2482 109 0.14 98
IV.MMGO.HHE. 2019-07-21T09:41:37.48 0.3 undecidable manual S 335 0.1133 127 -1.24 49
IV.MMGO.HHE. 2019-07-21T09:41:36.17 0.1 undecidable manual P 335 0.1133 127 -0.23 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRJA.HHN. ML:3.3 0.0107484345 0.16 AML other m 2019-07-21T09:41:43.96
IV.CAVT.HHE. ML:3 0.0057835665 0.096 AML other m 2019-07-21T09:41:43.88
IV.CRJA.HHE. ML:3.3 0.01124166 1.84 AML other m 2019-07-21T09:41:43.94
IV.CAVT.HHN. ML:3.1 0.007074024 0.1024 AML other m 2019-07-21T09:41:44.01
IV.MFNL.HHE. ML:3.2 0.0078393695 0.3456 AML other m 2019-07-21T09:41:46.53
IV.MBFT.HNE. ML:2.2 0.0004606049 0.3328 AML other m 2019-07-21T09:41:47.74
IV.MBFT.HHE. ML:3.1 0.003816777 0.32 AML other m 2019-07-21T09:41:47.75
IV.MBFT.HNN. ML:2.1 0.00041548035 1.5712 AML other m 2019-07-21T09:41:47.17
IV.MBFT.HHN. ML:3.1 0.003576462 1.5584 AML other m 2019-07-21T09:41:47.96
IV.CORL.HHE. ML:2.9 0.0023305205 0.64 AML other m 2019-07-21T09:41:50.54
IV.MFNL.HHN. ML:2.9 0.0045908995 1.5584 AML other m 2019-07-21T09:41:51.97
IV.MARS.EHN. ML:2.7 0.0013947235 0.6016 AML other m 2019-07-21T09:41:55.78
IV.CORL.HHN. ML:2.9 0.002733424 0.64 AML other m 2019-07-21T09:41:55.79
IV.MARS.EHE. ML:2.7 0.0013019579 1.3984 AML other m 2019-07-21T09:41:56.96
IV.MSFR.HHE. ML:2.2 9.591451E-5 0.5184 AML other m 2019-07-21T09:42:03.58
IV.SOLUN.HHE. ML:3 0.0015450735 0.6016 AML other m 2019-07-21T09:42:03.43
IV.MSFR.HHN. ML:2.3 9.913374E-5 0.48 AML other m 2019-07-21T09:42:04.36
IV.SOLUN.HHN. ML:2.9 0.0013495935 0.8576 AML other m 2019-07-21T09:42:05.18
IV.FAVR.HHN. ML:2.8 0.001224968 0.7808 AML other m 2019-07-21T09:42:07.33
IV.FAVR.HNN. ML:2.8 0.0011394035 0.7616 AML other m 2019-07-21T09:42:07.33
IV.FAVR.HNE. ML:2.8 0.0012719155 0.4992 AML other m 2019-07-21T09:42:08.44
IV.FAVR.HHE. ML:2.5 0.0006434616 0.4992 AML other m 2019-07-21T09:42:08.44
IV.ALJA.HHN. ML:2.8 0.0012421405 1.1232 AML other m 2019-07-21T09:42:10.20
IV.ALJA.HHE. ML:2.7 0.00091788435 0.5632 AML other m 2019-07-21T09:42:11.08
IV.CSLB.HHN. ML:2.4 0.00024690255 0.6976 AML other m 2019-07-21T09:42:11.39
IV.CMDO.HHE. ML:2.4 0.00038630625 0.7424 AML other m 2019-07-21T09:42:11.57
IV.CSLB.HHE. ML:2.5 0.0003062915 0.6848 AML other m 2019-07-21T09:42:12.67
IV.GIB.HHE. ML:3.2 0.0014480275 1.0816 AML other m 2019-07-21T09:42:13.33
IV.PETRA.HHE. ML:2.9 0.00080354695 1.4176 AML other m 2019-07-21T09:42:17.06
IV.RESU.HHE. ML:2.8 0.0006781336 0.6784 AML other m 2019-07-21T09:42:17.55
IV.PLLN.EHE. ML:2.9 0.00073370915 1.4368 AML other m 2019-07-21T09:42:17.84
IV.CMDO.HHN. ML:2.4 0.00045955085 1.0624 AML other m 2019-07-21T09:42:18.45
IV.GIB.HHN. ML:3.1 0.001364598 0.6016 AML other m 2019-07-21T09:42:18.57
IV.PETRA.HHN. ML:2.8 0.0006762713 1.2 AML other m 2019-07-21T09:42:19.19
IV.RESU.HHN. ML:2.8 0.0008433798 0.7616 AML other m 2019-07-21T09:42:20.61
IV.GALF.HNE. ML:2.3 0.0001143233 0.9376 AML other m 2019-07-21T09:42:21.84
IV.PLLN.EHN. ML:3 0.00085521965 0.64 AML other m 2019-07-21T09:42:22.57
IV.MNO.SHE. ML:0 0.00053128155 0.8384 AML other m 2019-07-21T09:42:32.44
IV.GALF.HHE. ML:3 0.00059777105 0.7232 AML other m 2019-07-21T09:42:34.69
IV.GALF.HHN. ML:3 0.00060772685 1.3024 AML other m 2019-07-21T09:42:35.85
MN.VSL.HHN. ML:2.4 1.6143346E-5 0.5952 AML other m 2019-07-21T09:42:35.66
IV.MUCR.HHE. ML:2.7 0.00021370265 1.4048 AML other m 2019-07-21T09:42:37.20
IV.GALF.HNN. ML:2.4 0.000138739025 1.1712 AML other m 2019-07-21T09:42:40.83
IV.MUCR.HHN. ML:2.8 0.00023207415 1.1808 AML other m 2019-07-21T09:42:41.39
IV.MNO.SHN. ML:0 0.00028992305 0.8 AML other m 2019-07-21T09:42:41.48
IV.ILLI.HHN. ML:4 0.0030536845 1.2576 AML other m 2019-07-21T09:42:49.13
IV.MRB1.HNE. ML:3.6 0.0001889335 0.2304 AML other m 2019-07-21T09:42:53.18
IV.MRB1.HNN. ML:3.8 0.00027798715 0.2176 AML other m 2019-07-21T09:42:53.16
IV.ILLI.HHE. ML:3.8 0.0018338455 0.6784 AML other m 2019-07-21T09:42:56.30
MN.VSL.HHE. ML:2.4 1.48807E-5 0.9792 AML other m 2019-07-21T09:43:00.51
IV.MRB1.HHN. ML:3.8 0.00028012755 0.1216 AML other m 2019-07-21T09:43:28.37
IV.MRB1.HHE. ML:3.6 0.00019201065 0.0832 AML other m 2019-07-21T09:43:32.88
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