Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 03-10-2021 and time 09:58:25 (UTC) in region 4 km SE Geraci Siculo (PA)

A magnitude ML 1.3 earthquake occured in region: 4 km SE Geraci Siculo (PA), on

  • 03-10-2021 09:58:25 (UTC)
  • 03-10-2021 11:58:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8400, 14.1930 at 10 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
Geraci Siculo PA 4 1945 1945
Gangi PA 5 6811 8756
San Mauro Castelverde PA 8 1701 10457
Petralia Soprana PA 9 3360 13817
Petralia Sottana PA 10 2821 16638
Castel di Lucio ME 12 1294 17932
Bompietro PA 13 1401 19333
Castelbuono PA 14 8943 28276
Blufi PA 14 1029 29305
Castellana Sicula PA 15 3411 32716
Sperlinga EN 16 805 33521
Tusa ME 17 2925 36446
Pettineo ME 17 1350 37796
Polizzi Generosa PA 17 3407 41203
Alimena PA 18 2032 43235
Pollina PA 18 2974 46209
Mistretta ME 18 4791 51000
Motta d'Affermo ME 19 739 51739
Reitano ME 20 806 52545

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km N of Caltanissetta (63360 inhabitants)
66 Km E of Bagheria (55387 inhabitants)
79 Km E of Palermo (674435 inhabitants)
80 Km NE of Agrigento (59770 inhabitants)
86 Km N of Gela (75827 inhabitants)
87 Km W of Catania (314555 inhabitants)
89 Km W of Acireale (52622 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 1.3 2021-10-03
09:58:25		 37.8397 14.1933 10 2021-10-03
10:09:28		 Sala Sismica INGV-Roma 96166071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-03 09:58:25 ± 0.25
Latitude 37.8397 ± 0.0135
Longitude 14.1933 ± 0.0251
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96166071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2072
Semi-minor axis of confidence ellipse (meter) 1462
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 271
Circular confidence region, given by single value of horizontal uncertainty (meter) 2070.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57377
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96166071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-03 10:09:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHE. 2021-10-03T09:58:37.17 0.3 undecidable manual P 69 63.6918 50 0.69 63
IV.GIB.HHZ. 2021-10-03T09:58:34.38 0.3 undecidable manual S 319 22.1556 115 0.77 66
IV.MSFR.HHE. 2021-10-03T09:58:32.57 0.3 undecidable manual P 58 40.9257 50 -0.41 72
IV.SCIAR.HHZ. 2021-10-03T09:58:32.96 0.3 undecidable manual P 286 40.4262 50 0.05 78
IV.PLLN.EHZ. 2021-10-03T09:58:32.70 0.3 undecidable manual S 345 17.5713 120 0.54 73
IV.RESU.HHE. 2021-10-03T09:58:31.02 0.3 undecidable manual P 209 24.5532 112 0.57 71
IV.CSLB.HHZ. 2021-10-03T09:58:31.52 0.3 undecidable manual S 312 16.0728 122 -0.21 78
IV.EPIT.HHZ. 2021-10-03T09:58:30.11 3.0 negative manual P -0.01 0
IV.PETRA.HHZ. 2021-10-03T09:58:29.70 0.3 undecidable manual S 264 6.8931 146 0.31 78
IV.GIB.HHZ. 2021-10-03T09:58:29.67 0.3 undecidable manual P 319 22.1556 115 -0.35 75
IV.CSLB.HHZ. 2021-10-03T09:58:28.38 0.1 undecidable manual P 312 16.0728 122 -0.56 96
IV.PLLN.EHZ. 2021-10-03T09:58:28.86 0.3 undecidable manual P 345 17.5713 120 -0.33 76
IV.PETRA.HHZ. 2021-10-03T09:58:27.09 0.1 undecidable manual P 264 6.8931 146 -0.5 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:1.5 0.0005124999999999999 0.54 AML other m 2021-10-03T09:58:30.29
IV.PETRA.HHN. ML:1.4 0.000382 0.4 AML other m 2021-10-03T09:58:30.30
IV.CSLB.HHN. ML:0.9 0.00007744999999999999 0.46 AML other m 2021-10-03T09:58:32.49
IV.CSLB.HHE. ML:0.8 0.00005205 1.22 AML other m 2021-10-03T09:58:32.13
IV.PLLN.EHN. ML:1.3 0.00017999999999999998 0.44 AML other m 2021-10-03T09:58:33.69
IV.PLLN.EHE. ML:1.3 0.0001785 0.4 AML other m 2021-10-03T09:58:33.69
IV.GIB.HHN. ML:1.3 0.00013800000000000002 1.38 AML other m 2021-10-03T09:58:38.13
IV.GIB.HHE. ML:1.3 0.00013350000000000002 0.5 AML other m 2021-10-03T09:58:39.48
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