Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 30-08-2021 and time 18:58:21 (Italy) in region Costa Siciliana centro settentrionale (Palermo)

A magnitude ML 2.2 earthquake occured in region: Costa Siciliana centro settentrionale (Palermo), on

  • 30-08-2021 16:58:21 (UTC)
  • 30-08-2021 18:58:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.1250, 13.8940 at 5 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
Lascari PA 14 3588 3588
Cefalù PA 15 14393 17981
Campofelice di Roccella PA 15 7537 25518
Gratteri PA 19 963 26481

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Bagheria (55387 inhabitants)
46 Km E of Palermo (674435 inhabitants)
72 Km N of Caltanissetta (63360 inhabitants)
95 Km N of Agrigento (59770 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 2021-08-30
16:58:21		 38.1253 13.8937 5 2021-12-29
11:12:29		 Bollettino Sismico Italiano INGV 95305591
Reviewed
Rev100 		ML 2.2 2021-08-30
16:58:22		 38.1162 13.892 4 2021-08-30
17:14:22		 Sala Sismica INGV-Roma 94827821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-30 16:58:21 ± 0.12
Latitude 38.1253 ± 0.0063
Longitude 13.8937 ± 0.0046
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95305591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 740
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.22578
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 94827821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-30 17:14:22

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 95305591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-16 21:12:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2021-08-30T17:00:08.46 3.0 undecidable manual Sn 3.5 0
IV.CRAC.EHZ. 2021-08-30T16:59:48.74 3.0 undecidable manual Sn -0.08 0
IV.AGLI.HHZ. 2021-08-30T16:59:33.32 3.0 negative manual P -2.05 0
IV.LINA.HHZ. 2021-08-30T16:59:04.08 3.0 undecidable manual P 0.87 0
IV.MCPD.HHE. 2021-08-30T16:58:45.40 0.6 undecidable manual S 90 73.0713 50 0.12 0
IV.LEVAN.EHZ. 2021-08-30T16:58:45.37 0.3 undecidable manual P 264 136.0638 50 0.24 0
IV.IVUG.HHE. 2021-08-30T16:58:40.58 0.3 undecidable manual P 72 99.7224 50 1.03 0
IV.MMGO.HHZ. 2021-08-30T16:58:40.73 0.3 undecidable manual P 238 95.3379 50 1.87 0
IV.IVPL.HHE. 2021-08-30T16:58:39.58 0.3 undecidable manual P 73 98.6235 50 0.21 0
IV.EPZF.HHZ. 2021-08-30T16:58:39.78 0.3 undecidable manual P 111 90.6426 50 1.65 0
IV.CRJA.HHZ. 2021-08-30T16:58:38.27 0.3 undecidable manual P 245 85.6476 50 0.9 0
IV.MBFT.HHZ. 2021-08-30T16:58:37.55 0.3 undecidable manual P 257 84.5487 50 0.36 0
IV.MUCR.HHE. 2021-08-30T16:58:37.47 0.3 undecidable manual P 96 86.0472 50 0.04 0
IV.USI.HHE. 2021-08-30T16:58:37.76 0.1 undecidable manual P 316 89.6436 50 -0.22 0
IV.IFIL.HHE. 2021-08-30T16:58:36.78 0.3 undecidable manual P 50 76.7676 50 0.79 0
IV.PETRA.HHZ. 2021-08-30T16:58:35.10 0.6 undecidable manual S 149 37.7289 98 -0.07 45
IV.MCPD.HHE. 2021-08-30T16:58:35.89 0.3 undecidable manual P 90 73.0713 50 0.46 0
IV.IACL.HHE. 2021-08-30T16:58:34.64 0.3 undecidable manual P 41 60.495 50 1.15 2
IV.RESU.HHZ. 2021-08-30T16:58:33.65 0.3 undecidable manual P 165 55.0005 50 1.01 10
IV.MSFR.HHE. 2021-08-30T16:58:33.97 0.3 undecidable manual P 99 61.7937 50 0.28 1
IV.SOLUN.HHZ. 2021-08-30T16:58:32.70 0.6 undecidable manual S 263 31.746 99 -0.42 47
IV.MPG.HHZ. 2021-08-30T16:58:31.20 0.3 undecidable manual P 275 46.7199 50 -0.17 39
IV.PLLN.EHZ. 2021-08-30T16:58:31.10 0.6 undecidable manual S 124 26.2515 101 -0.16 50
IV.CSLB.HHZ. 2021-08-30T16:58:30.40 0.6 undecidable manual S 145 25.2525 101 -0.53 46
IV.SCIAR.HHZ. 2021-08-30T16:58:30.70 0.6 undecidable manual S 212 24.0537 102 0.19 49
IV.PETRA.HHZ. 2021-08-30T16:58:29.44 0.3 undecidable manual P 149 37.7289 98 -0.15 66
IV.SOLUN.HHZ. 2021-08-30T16:58:28.44 0.3 undecidable manual P 263 31.746 99 0.03 76
IV.GIB.HHZ. 2021-08-30T16:58:28.90 0.6 undecidable manual S 142 18.9699 105 0.13 50
IV.PLLN.EHZ. 2021-08-30T16:58:27.45 0.1 undecidable manual P 124 26.2515 101 0.11 100
IV.SCIAR.HHZ. 2021-08-30T16:58:27.18 0.3 undecidable manual P 212 24.0537 102 0.28 72
IV.GIB.HHZ. 2021-08-30T16:58:26.20 0.1 undecidable manual P 142 18.9699 105 0.3 96
IV.CSLB.HHZ. 2021-08-30T16:58:26.93 0.1 undecidable manual P 145 25.2525 101 -0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SCIAR.HHE. ML:2.5 0.00191994 0.1408 AML other m 2021-08-30T16:58:31.43
IV.SCIAR.HNN. ML:2.5 0.002119008 0.1664 AML other m 2021-08-30T16:58:31.37
IV.SCIAR.HHN. ML:2.5 0.0021952075 0.1792 AML other m 2021-08-30T16:58:31.78
IV.CSLB.HHN. ML:2.1 0.000839 0.16 AML other m 2021-08-30T16:58:31.88
IV.CSLB.HHE. ML:2.0 0.0006815 1.66 AML other m 2021-08-30T16:58:31.08
IV.GIB.HHE. ML:2.5 0.0029049999999999996 1.5 AML other m 2021-08-30T16:58:32.76
IV.SCIAR.HNE. ML:2.3 0.0014264345 0.256 AML other m 2021-08-30T16:58:32.34
IV.GIB.HHN. ML:2.5 0.0026193295000000003 0.448 AML other m 2021-08-30T16:58:32.02
IV.PLLN.EHE. ML:2.3 0.0012649999999999998 1.04 AML other m 2021-08-30T16:58:33.01
IV.SOLUN.HHE. ML:2.3 0.00093635265 0.2432 AML other m 2021-08-30T16:58:34.12
IV.SOLUN.HHN. ML:2.2 0.00079919195 0.1792 AML other m 2021-08-30T16:58:34.47
IV.PLLN.EHN. ML:2.5 0.0018599999999999999 0.48 AML other m 2021-08-30T16:58:37.88
IV.PETRA.HHN. ML:2.4 0.0010131991999999999 0.4992 AML other m 2021-08-30T16:58:38.12
IV.MPG.HHE. ML:1.9 0.000246 0.22 AML other m 2021-08-30T16:58:40.22
IV.MPG.HHN. ML:2.0 0.00028085795 0.2304 AML other m 2021-08-30T16:58:40.48
IV.PETRA.HHE. ML:2.3 0.0008134517 0.256 AML other m 2021-08-30T16:58:40.70
IV.RESU.HHE. ML:2.3 0.0004375 0.4 AML other m 2021-08-30T16:58:45.19
IV.MBFT.HHE. ML:1.7 0.000071657775 0.2432 AML other m 2021-08-30T16:58:51.43
IV.CRJA.HHN. ML:2.0 0.00014095515 1.1424 AML other m 2021-08-30T16:58:51.85
IV.RESU.HHN. ML:2.2 0.000413 0.44 AML other m 2021-08-30T16:58:54.06
IV.MBFT.HHN. ML:1.7 0.00006116176500000001 0.4096 AML other m 2021-08-30T16:58:54.78
IV.CRJA.HHE. ML:2.2 0.0001835 1.04 AML other m 2021-08-30T16:58:58.23
IV.EPZF.HHN. ML:2.3 0.00024741015 0.4608 AML other m 2021-08-30T16:59:00.15
IV.EPZF.HHE. ML:2.2 0.00017056875 0.3584 AML other m 2021-08-30T16:59:00.78
IV.LEVAN.EHN. ML:1.9 0.000048306620000000004 0.768 AML other m 2021-08-30T16:59:04.37
IV.LEVAN.EHE. ML:2.0 0.000067430345 0.7968 AML other m 2021-08-30T16:59:08.57
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