Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 11-09-2024 and time 02:07:23 (UTC) in region 4 km NE Polizzi Generosa (PA)

A magnitude ML 1.1 earthquake occured in region: 4 km NE Polizzi Generosa (PA), on

  • 11-09-2024 02:07:23 (UTC)
  • 11-09-2024 04:07:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8350, 14.0390 at 6 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Polizzi Generosa PA 4 3407 3407
Petralia Sottana PA 6 2821 6228
Castellana Sicula PA 6 3411 9639
Petralia Soprana PA 7 3360 12999
Blufi PA 10 1029 14028
Geraci Siculo PA 11 1945 15973
Bompietro PA 11 1401 17374
Scillato PA 12 613 17987
Castelbuono PA 12 8943 26930
Isnello PA 13 1589 28519
Collesano PA 13 4054 32573
Caltavuturo PA 13 4017 36590
Gangi PA 15 6811 43401
Gratteri PA 16 963 44364
San Mauro Castelverde PA 16 1701 46065
Sclafani Bagni PA 16 426 46491
Resuttano CL 17 2038 48529
Alimena PA 17 2032 50561

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km N of Caltanissetta (63360 inhabitants)
54 Km SE of Bagheria (55387 inhabitants)
67 Km SE of Palermo (674435 inhabitants)
71 Km NE of Agrigento (59770 inhabitants)
88 Km N of Gela (75827 inhabitants)
99 Km W of Catania (314555 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.1 2024-09-11
02:07:23		 37.835 14.0393 6 2024-09-11
02:16:41		 Sala Sismica INGV-Roma 131349351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-09-11 02:07:23 ± 0.17
Latitude 37.8350 ± 0.0054
Longitude 14.0393 ± 0.0080
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 131349351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 668
Semi-minor axis of confidence ellipse (meter) 316
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.61514
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 131349351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-09-11 02:16:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CIMI.HNZ. 2024-09-11T02:07:37.79 0.6 undecidable manual S 277 41.2254 99 -0.13 48
IV.MCPD.HHE. 2024-09-11T02:07:36.31 0.6 undecidable manual P 62 68.2761 50 0.31 44
IV.SCIAR.HHZ. 2024-09-11T02:07:33.78 0.6 undecidable manual S 295 27.9498 103 0.37 47
IV.CIMI.HNZ. 2024-09-11T02:07:32.08 0.6 undecidable manual P 277 41.2254 99 0.27 47
IV.RESU.HHZ. 2024-09-11T02:07:31.29 0.6 undecidable manual S 176 20.9679 107 0.24 49
IV.GIB.HHZ. 2024-09-11T02:07:30.48 0.6 undecidable manual S 356 17.2716 110 0.64 44
IV.SCIAR.HHZ. 2024-09-11T02:07:28.68 0.6 undecidable manual P 295 27.9498 103 -0.52 45
IV.CSLB.HHZ. 2024-09-11T02:07:28.16 0.6 undecidable manual S 8 11.4774 119 0.14 51
IV.RESU.HHZ. 2024-09-11T02:07:27.85 0.6 undecidable manual P 176 20.9679 107 0.01 51
IV.GIB.HHZ. 2024-09-11T02:07:26.96 0.1 undecidable manual P 356 17.2716 110 -0.18 100
IV.PETRA.HHZ. 2024-09-11T02:07:26.95 0.6 undecidable manual S 91 6.5934 134 0.3 50
IV.PETRA.HHZ. 2024-09-11T02:07:25.05 0.1 negative manual P 91 6.5934 134 -0.25 100
IV.CSLB.HHZ. 2024-09-11T02:07:25.76 0.1 positive manual P 8 11.4774 119 -0.33 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHN. ML:1.0 0.0001475 0.92 AML other m 2024-09-11T02:07:28.08
IV.CSLB.HHE. ML:0.8 0.00008705 0.32 AML other m 2024-09-11T02:07:29.67
IV.RESU.HHN. ML:1.2 0.0001325 0.78 AML other m 2024-09-11T02:07:35.33
IV.RESU.HHE. ML:1.0 0.00008255 0.42 AML other m 2024-09-11T02:07:36.65
IV.PETRA.HHE. ML:0.0 0.0004951622 0.4 AML other m 2024-09-11T02:07:28.11
IV.PETRA.HHN. ML:0.0 0.00074383275 0.32 AML other m 2024-09-11T02:07:27.14
IV.SCIAR.HHE. ML:1.0 0.000057848059999999997 0.4 AML other m 2024-09-11T02:07:38.03
IV.SCIAR.HHN. ML:1.2 0.00009196965 0.56 AML other m 2024-09-11T02:07:36.50
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download