Earthquake with magnitude of ML 1.8 on date 22-08-2019 and time 16:03:43 (UTC) in region 2 km S Sciara (PA)

A magnitude ML 1.8 earthquake occured in region: 2 km S Sciara (PA), on

  • 22-08-2019 16:03:43 (UTC)
  • 22-08-2019 18:03:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.89, 13.76 at 2 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Sciara PA 2 2822 2822
Aliminusa PA 4 1236 4058
Montemaggiore Belsito PA 5 3365 7423
Cerda PA 5 5330 12753
Caccamo PA 9 8196 20949
Termini Imerese PA 12 26263 47212
Sclafani Bagni PA 12 426 47638
Alia PA 13 3623 51261
Scillato PA 14 613 51874
Roccapalumba PA 14 2516 54390
Caltavuturo PA 14 4017 58407
Trabia PA 14 10505 68912
Campofelice di Roccella PA 16 7537 76449
Collesano PA 16 4054 80503
Ventimiglia di Sicilia PA 17 1953 82456
Ciminna PA 17 3780 86236
Valledolmo PA 17 3594 89830
Vicari PA 18 2901 92731
Baucina PA 20 2008 94739

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SE of Bagheria (55387 inhabitants)
43 Km SE of Palermo (674435 inhabitants)
52 Km NW of Caltanissetta (63360 inhabitants)
67 Km N of Agrigento (59770 inhabitants)
Recent and historical Seismicity
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 100 ML 1.8 2019-08-22
16:03:43
37.89 13.76 2 2019-08-22
16:30:14
Sala Sismica INGV-Roma 71708801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-22 16:03:43 ± 0.17
Latitude 37.89 ± 0.01
Longitude 13.76 ± 0.01
Depth (km) 2 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71708801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1278
Semi-minor axis of confidence ellipse (meter) 235
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 350
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.51
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.89213
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 71708801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-22 16:30:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2019-08-22T16:04:01.12 0.3 undecidable manual P 80 0.8921 50 0.1 69
IV.RESU.HHZ. 2019-08-22T16:04:00.24 3.0 undecidable manual S 136 0.3426 94 3.8 0
IV.IACL.HHZ. 2019-08-22T16:04:00.50 3.0 undecidable manual P 0
IV.CORL.HHZ. 2019-08-22T16:03:58.32 0.6 undecidable manual S 270 0.3579 93 1.29 33
IV.MNO.SHZ. 2019-08-22T16:03:58.27 0.3 undecidable manual P 87 0.7401 50 -0.15 71
IV.CSLB.HHE. 2019-08-22T16:03:53.04 0.3 undecidable manual S 80 0.241 95 0.51 73
IV.MPG.HHZ. 2019-08-22T16:03:52.68 0.3 undecidable manual P 311 0.411 93 0.3 74
IV.GIB.HHN. 2019-08-22T16:03:52.82 0.6 undecidable manual S 66 0.232 95 0.61 47
IV.RESU.HHZ. 2019-08-22T16:03:51.32 0.3 undecidable manual P 136 0.3426 94 0.47 72
IV.CORL.HHZ. 2019-08-22T16:03:50.77 0.1 undecidable manual P 270 0.3579 93 -0.42 97
IV.MCT.HHZ. 2019-08-22T16:03:50.69 0.1 undecidable manual P 203 0.3004 94 0.78 86
IV.PETRA.HHZ. 2019-08-22T16:03:49.00 3.0 undecidable manual P 0
IV.ALJA.HHZ. 2019-08-22T16:03:48.50 0.6 undecidable manual S 181 0.1457 98 -0.38 51
IV.GIB.HHN. 2019-08-22T16:03:48.16 0.3 undecidable manual P 66 0.232 95 -0.25 77
IV.SOLUN.HHZ. 2019-08-22T16:03:48.78 0.1 undecidable manual P 318 0.2653 95 -0.36 100
IV.CSLB.HHE. 2019-08-22T16:03:47.93 0.1 undecidable manual P 80 0.241 95 -0.67 91
IV.ALJA.HHZ. 2019-08-22T16:03:45.72 0.3 undecidable manual P 181 0.1457 98 -0.77 67
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHE. ML:1.4 0.0001435 1.06 AML other m 2019-08-22T16:03:53.90
IV.CSLB.HHN. ML:1.5 0.0001925 0.72 AML other m 2019-08-22T16:03:54.48
IV.GIB.HHE. ML:1.8 0.000433 0.42 AML other m 2019-08-22T16:03:54.95
IV.PETRA.HHE. ML:1.7 0.000257 1.26 AML other m 2019-08-22T16:03:55.86
IV.GIB.HHN. ML:1.8 0.0004025 0.4 AML other m 2019-08-22T16:03:56.46
IV.PETRA.HHN. ML:1.9 0.0003655 0.54 AML other m 2019-08-22T16:03:58.44
IV.PLLN.EHN. ML:1.9 0.0003445 1.18 AML other m 2019-08-22T16:03:58.24
IV.CORL.HHE. ML:1.7 0.0001955 0.42 AML other m 2019-08-22T16:04:00.29
IV.CORL.HHN. ML:1.8 0.0002405 0.5 AML other m 2019-08-22T16:04:02.56
IV.RESU.HHN. ML:1.9 0.000312 0.58 AML other m 2019-08-22T16:04:02.32
IV.RESU.HHE. ML:1.9 0.000297 1.36 AML other m 2019-08-22T16:04:03.84
IV.PLLN.EHE. ML:1.7 0.0001965 1.04 AML other m 2019-08-22T16:04:03.66
IV.MNO.SHE. ML:0 9.595E-5 0.48 AML other m 2019-08-22T16:04:17.16
IV.MNO.SHN. ML:0 8.315E-5 0.48 AML other m 2019-08-22T16:04:18.46
IV.MUCR.HHN. ML:1.7 5.62E-5 0.56 AML other m 2019-08-22T16:04:20.77
IV.MUCR.HHE. ML:1.6 4.39E-5 1.24 AML other m 2019-08-22T16:04:23.65
IV.ALJA.HHE. ML:2 0.00096232165 0.3072 AML other m 2019-08-22T16:03:48.60
IV.ALJA.HHN. ML:1.9 0.00090723205 0.3328 AML other m 2019-08-22T16:03:48.68
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download