Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 09-06-2021 and time 11:48:35 (Italy) in region 2 km NW Polizzi Generosa (PA)

A magnitude ML 2.2 earthquake occured in region: 2 km NW Polizzi Generosa (PA), on

  • 09-06-2021 09:48:35 (UTC)
  • 09-06-2021 11:48:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8260, 13.9800 at 6 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.

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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 2 3407 3407
Scillato PA 7 613 4020
Castellana Sicula PA 8 3411 7431
Caltavuturo PA 8 4017 11448
Petralia Sottana PA 10 2821 14269
Sclafani Bagni PA 11 426 14695
Collesano PA 11 4054 18749
Petralia Soprana PA 12 3360 22109
Blufi PA 12 1029 23138
Isnello PA 13 1589 24727
Bompietro PA 14 1401 26128
Castelbuono PA 15 8943 35071
Gratteri PA 16 963 36034
Geraci Siculo PA 16 1945 37979
Valledolmo PA 16 3594 41573
Resuttano CL 17 2038 43611
Cerda PA 17 5330 48941
Aliminusa PA 18 1236 50177
Alimena PA 19 2032 52209
Montemaggiore Belsito PA 19 3365 55574
Lascari PA 20 3588 59162

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km N of Caltanissetta (63360 inhabitants)
50 Km SE of Bagheria (55387 inhabitants)
63 Km SE of Palermo (674435 inhabitants)
67 Km NE of Agrigento (59770 inhabitants)
88 Km N of Gela (75827 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
Bulletin
Rev1000 		ML 2.2 2021-06-09
09:48:35		 37.8262 13.9798 6 2021-12-29
11:12:10		 Bollettino Sismico Italiano INGV 92481061
Reviewed
Rev100 		ML 2.2 2021-06-09
09:48:35		 37.8345 13.9682 4 2021-06-09
10:01:58		 Sala Sismica INGV-Roma 90968011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-09 09:48:35 ± 0.14
Latitude 37.8262 ± 0.0063
Longitude 13.9798 ± 0.0080
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 92481061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 818
Semi-minor axis of confidence ellipse (meter) 162
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 308
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.10702
Epicentral distance of station farthest from the epicenter (degree) 0.52520
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 90968011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-09 10:01:58

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 92481061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-26 10:49:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSFR.HHZ. 2021-06-09T09:48:46.31 0.6 undecidable manual P 67 58.2972 50 -0.11 46
IV.GALF.HHZ. 2021-06-09T09:48:46.51 0.6 undecidable manual P 104 53.0025 50 0.91 36
IV.SOLUN.HHE. 2021-06-09T09:48:44.70 0.6 undecidable manual P 307 49.0176 50 -0.28 45
IV.MCT.HHN. 2021-06-09T09:48:44.11 0.3 undecidable manual P 235 39.9267 98 0.73 60
IV.ALJA.HHZ. 2021-06-09T09:48:43.09 0.3 undecidable manual S 247 21.5673 104 0.06 74
IV.GIB.HHZ. 2021-06-09T09:48:42.33 0.3 undecidable manual S 13 18.6702 106 0.28 71
IV.PLLN.EHZ. 2021-06-09T09:48:42.98 0.3 undecidable manual S 38 23.3544 103 -0.65 64
IV.RESU.HHZ. 2021-06-09T09:48:42.37 0.6 undecidable manual S 161 20.9679 105 -0.46 45
IV.PETRA.HHZ. 2021-06-09T09:48:40.33 0.3 undecidable manual S 86 11.877 115 0.49 69
IV.CSLB.HHZ. 2021-06-09T09:48:40.89 0.3 undecidable manual S 29 14.0748 111 0.33 71
IV.ALJA.HHZ. 2021-06-09T09:48:39.45 0.3 undecidable manual P 247 21.5673 104 -0.31 70
IV.PLLN.EHZ. 2021-06-09T09:48:39.77 0.3 undecidable manual P 38 23.3544 103 -0.34 70
IV.RESU.HHZ. 2021-06-09T09:48:39.51 0.1 positive manual P 161 20.9679 105 -0.14 97
IV.GIB.HHZ. 2021-06-09T09:48:39.22 0.1 undecidable manual P 13 18.6702 106 0.02 100
IV.CSLB.HHZ. 2021-06-09T09:48:38.19 0.1 positive manual P 29 14.0748 111 -0.14 98
IV.PETRA.HHZ. 2021-06-09T09:48:37.84 0.1 positive manual P 86 11.877 115 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHN. ML:2.4 0.003615 0.32 AML other m 2021-06-09T09:48:42.12
IV.PETRA.HHE. ML:2.4 0.00321 0.24 AML other m 2021-06-09T09:48:43.36
IV.CSLB.HHN. ML:1.9 0.0009385 0.34 AML other m 2021-06-09T09:48:43.30
IV.CSLB.HHE. ML:1.8 0.0007749999999999999 0.44 AML other m 2021-06-09T09:48:43.94
IV.GIB.HHN. ML:2.3 0.0016699999999999998 0.34 AML other m 2021-06-09T09:48:44.81
IV.RESU.HHN. ML:2.4 0.001955 1.58 AML other m 2021-06-09T09:48:45.87
IV.GIB.HHE. ML:2.1 0.0011400000000000002 1.02 AML other m 2021-06-09T09:48:46.78
IV.ALJA.HHE. ML:2.1 0.000912 0.48 AML other m 2021-06-09T09:48:47.99
IV.ALJA.HHN. ML:1.9 0.0005560000000000001 1.16 AML other m 2021-06-09T09:48:47.17
IV.PLLN.EHE. ML:2.2 0.001 0.5 AML other m 2021-06-09T09:48:48.18
IV.PLLN.EHN. ML:2.2 0.00123 1.46 AML other m 2021-06-09T09:48:48.25
IV.RESU.HHE. ML:2.2 0.0011394999999999999 0.58 AML other m 2021-06-09T09:48:51.69
IV.GALF.HHE. ML:2.2 0.0004415 0.5 AML other m 2021-06-09T09:49:05.71
IV.GALF.HHN. ML:2.2 0.0004145 0.42 AML other m 2021-06-09T09:49:06.85
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
Waveforms Seismic signals in miniseed + resp format Download