Earthquake with magnitude of ML 1.8 on date 22-09-2019 and time 04:49:23 (Italy) in region 3 km W Gangi (PA)

A magnitude ML 1.8 earthquake occured in region: 3 km W Gangi (PA), on

  • 22-09-2019 02:49:23 (UTC)
  • 22-09-2019 04:49:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.79, 14.17 at 11 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
Gangi PA 4 6811 6811
Petralia Soprana PA 5 3360 10171
Petralia Sottana PA 7 2821 12992
Geraci Siculo PA 8 1945 14937
Bompietro PA 8 1401 16338
Blufi PA 9 1029 17367
Castellana Sicula PA 11 3411 20778
Alimena PA 12 2032 22810
San Mauro Castelverde PA 14 1701 24511
Polizzi Generosa PA 15 3407 27918
Castel di Lucio ME 17 1294 29212
Sperlinga EN 17 805 30017
Resuttano CL 17 2038 32055
Castelbuono PA 17 8943 40998

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Caltanissetta (63360 inhabitants)
66 Km SE of Bagheria (55387 inhabitants)
74 Km NE of Agrigento (59770 inhabitants)
79 Km E of Palermo (674435 inhabitants)
81 Km N of Gela (75827 inhabitants)
87 Km W of Catania (314555 inhabitants)
90 Km W of Acireale (52622 inhabitants)
99 Km NW of Vittoria (63339 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 2019-09-22
02:49:23
37.79 14.17 11 2019-09-22
02:58:23
Sala Sismica INGV-Roma 72645711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-22 02:49:23 ± 0.14
Latitude 37.79 ± 0.01
Longitude 14.17 ± 0.02
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72645711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1885
Semi-minor axis of confidence ellipse (meter) 779
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 1890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.83547
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 72645711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-22 02:58:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IFIL.HHZ. 2019-09-22T02:49:39.67 0.6 negative manual P 22 0.8355 50 0.71 37
IV.MUCR.HHZ. 2019-09-22T02:49:35.29 0.3 undecidable manual P 66 0.6106 50 0.18 68
IV.MNO.SHZ. 2019-09-22T02:49:32.22 0.6 negative manual P 71 0.4389 50 0.05 48
IV.PLLN.EHZ. 2019-09-22T02:49:32.29 0.3 undecidable manual S 355 0.2014 50 0.59 68
IV.RESU.HHZ. 2019-09-22T02:49:31.57 0.6 undecidable manual S 211 0.1691 120 0.84 38
IV.MSFR.HHZ. 2019-09-22T02:49:31.46 1.0 undecidable manual P 54 0.4128 50 -0.26 23
IV.CSLB.HHZ. 2019-09-22T02:49:30.68 0.3 undecidable manual S 329 0.1691 120 -0.05 76
IV.GALF.HHZ. 2019-09-22T02:49:29.86 0.6 positive manual P 104 0.3256 50 -0.37 46
IV.GIB.HHZ. 2019-09-22T02:49:28.56 0.6 positive manual P 331 0.2275 50 0.01 50
IV.CSLB.HHZ. 2019-09-22T02:49:27.09 0.3 positive manual P 329 0.1691 120 -0.46 70
IV.PETRA.HHE. 2019-09-22T02:49:27.73 0.3 undecidable manual S 315 0.0594 149 0.14 74
IV.RESU.HHZ. 2019-09-22T02:49:27.37 0.1 positive manual P 211 0.1691 120 -0.18 100
IV.PLLN.EHZ. 2019-09-22T02:49:27.86 0.6 positive manual P 355 0.2014 50 -0.25 48
IV.PETRA.HHE. 2019-09-22T02:49:25.45 0.3 undecidable manual P 315 0.0594 149 -0.29 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHE. ML:1.4 0.0001962427 0.2592 AML other m 2019-09-22T02:49:32.89
IV.CSLB.HHN. ML:1.6 0.000268339 0.5008 AML other m 2019-09-22T02:49:32.80
IV.RESU.HHE. ML:1.9 0.0006632437 0.4992 AML other m 2019-09-22T02:49:39.25
IV.RESU.HHN. ML:2 0.0007387442 0.3808 AML other m 2019-09-22T02:49:38.65
IV.PLLN.EHE. ML:1.8 0.0004162362 0.6592 AML other m 2019-09-22T02:49:35.87
IV.PLLN.EHN. ML:1.8 0.00045680175 0.4992 AML other m 2019-09-22T02:49:37.96
IV.GIB.HHE. ML:1.8 0.0003978493 0.3808 AML other m 2019-09-22T02:49:37.11
IV.GIB.HHN. ML:1.8 0.00035757815 0.52 AML other m 2019-09-22T02:49:36.75
IV.GALF.HNE. ML:1.4 0.0001101752 0.6992 AML other m 2019-09-22T02:49:40.29
IV.GALF.HNN. ML:1.5 0.000114427 0.76 AML other m 2019-09-22T02:49:39.66
IV.GALF.HHE. ML:2.1 0.0004476163 0.6592 AML other m 2019-09-22T02:49:42.03
IV.GALF.HHN. ML:2 0.00042992815 0.2992 AML other m 2019-09-22T02:49:41.71
IV.MSFR.HHE. ML:1.3 6.0707515E-5 0.72 AML other m 2019-09-22T02:49:40.13
IV.MSFR.HHN. ML:1.3 5.809752E-5 0.6192 AML other m 2019-09-22T02:49:44.03
IV.MNO.SHE. ML:0 0.00012689362 0.52 AML other m 2019-09-22T02:49:46.44
IV.MNO.SHN. ML:0 0.00017147425 0.56 AML other m 2019-09-22T02:49:44.44
IV.MUCR.HHE. ML:1.7 7.9862895E-5 0.6208 AML other m 2019-09-22T02:49:50.36
IV.MUCR.HHN. ML:1.6 7.374986E-5 0.76 AML other m 2019-09-22T02:49:49.13
IV.IFIL.HHE. ML:2.6 0.0005221771 0.4192 AML other m 2019-09-22T02:49:57.76
IV.IFIL.HHN. ML:2.2 0.00018123805 0.28 AML other m 2019-09-22T02:49:55.63
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