Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 21-09-2020 and time 17:55:24 (UTC) in region 2 km S Santo Stefano di Camastra (ME)

A magnitude ML 1.5 earthquake occured in region: 2 km S Santo Stefano di Camastra (ME), on

  • 21-09-2020 17:55:24 (UTC)
  • 21-09-2020 19:55:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.0010, 14.3490 at 21 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
Santo Stefano di Camastra ME 2 4694 4694
Reitano ME 3 806 5500
Motta d'Affermo ME 5 739 6239
Pettineo ME 6 1350 7589
Mistretta ME 8 4791 12380
Caronia ME 9 3364 15744
Tusa ME 10 2925 18669
Castel di Lucio ME 13 1294 19963
San Mauro Castelverde PA 17 1701 21664
Pollina PA 18 2974 24638

Municipalities with at least 50000 inhabitants

An earthquake occurred to
62 Km NE of Caltanissetta (63360 inhabitants)
74 Km E of Bagheria (55387 inhabitants)
84 Km NW of Acireale (52622 inhabitants)
85 Km NW of Catania (314555 inhabitants)
87 Km E of Palermo (674435 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 1.5 2020-09-21
17:55:24		 38.0013 14.3487 21 2021-02-26
14:55:56		 Bollettino Sismico Italiano INGV 83193921
Reviewed
Rev100 		ML 1.5 2020-09-21
17:55:24		 38.0185 14.3428 24 2020-09-21
18:09:04		 Sala Sismica INGV-Roma 83112191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-21 17:55:24 ± 0.2
Latitude 38.0013 ± 0.0153
Longitude 14.3487 ± 0.0126
Depth (km) 21 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83193921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1428
Semi-minor axis of confidence ellipse (meter) 1236
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 177
Circular confidence region, given by single value of horizontal uncertainty (meter) 1430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
Number of associated phases, regardless of their use for origin computation 24
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77881
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 83112191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-21 18:09:04

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 83193921
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-15 15:20:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LRP.EHZ. 2020-09-21T17:57:04.05 3.0 undecidable manual Sn -6.43 0
IV.MCRV.HHZ. 2020-09-21T17:56:52.02 3.0 undecidable manual Sg 2.38 0
IV.CASP.HHZ. 2020-09-21T17:56:50.06 3.0 undecidable manual Pn 1.28 0
HL.VLS.HHZ. 2020-09-21T17:56:39.33 3.0 undecidable manual Pn -0.48 0
IV.RMP.HHZ. 2020-09-21T17:56:31.68 3.0 negative manual Pn 3 0
IV.CAR1.HHZ. 2020-09-21T17:56:28.75 3.0 undecidable manual Sg 2.79 0
XK.GIZZ.HHZ. 2020-09-21T17:56:21.60 3.0 undecidable manual Sg -0.09 0
XK.GIZZ.HHZ. 2020-09-21T17:55:56.56 3.0 negative manual Pg -0.25 0
IV.MUCR.HHZ. 2020-09-21T17:55:39.45 0.6 undecidable manual S 84 46.1205 106 -0.11 48
IV.RAFF.HHZ. 2020-09-21T17:55:39.43 0.3 undecidable manual P 179 86.4468 98 0.19 64
IV.NOV.HHZ. 2020-09-21T17:55:36.42 0.1 undecidable manual P 87 68.9754 100 -0.16 90
IV.IVUG.HHE. 2020-09-21T17:55:36.76 0.3 undecidable manual P 52 70.7736 100 -0.09 68
IV.GIB.HHE. 2020-09-21T17:55:35.75 0.6 undecidable manual S 268 28.2495 119 0.63 43
IV.CSLB.HHZ. 2020-09-21T17:55:34.43 0.6 undecidable manual S 255 26.3514 121 -0.27 47
IV.SCIAR.HHZ. 2020-09-21T17:55:34.16 0.1 undecidable manual P 263 52.8027 104 0.01 95
IV.EPZF.HHZ. 2020-09-21T17:55:34.69 0.6 undecidable manual P 114 48.618 105 1.17 32
IV.PETRA.HHZ. 2020-09-21T17:55:34.47 0.3 undecidable manual S 228 27.6501 119 -0.52 67
IV.PLLN.EHZ. 2020-09-21T17:55:33.62 0.3 undecidable manual S 267 17.9709 133 0.72 63
IV.RESU.HHZ. 2020-09-21T17:55:33.65 0.3 undecidable manual P 213 46.9197 106 0.38 67
IV.MUCR.HHZ. 2020-09-21T17:55:32.99 0.1 undecidable manual P 84 46.1205 106 -0.16 94
IV.GIB.HHE. 2020-09-21T17:55:30.50 0.3 undecidable manual P 268 28.2495 119 -0.09 73
IV.PETRA.HHZ. 2020-09-21T17:55:30.31 0.1 positive manual P 228 27.6501 119 -0.21 95
IV.CSLB.HHZ. 2020-09-21T17:55:29.89 0.1 undecidable manual P 255 26.3514 121 -0.46 91
IV.PLLN.EHZ. 2020-09-21T17:55:29.37 0.1 undecidable manual P 267 17.9709 133 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHN. ML:1.2 0.00006644999999999999 0.42 AML other m 2020-09-21T17:55:34.81
IV.PLLN.EHE. ML:1.6 0.0002105 0.94 AML other m 2020-09-21T17:55:34.16
IV.CSLB.HHE. ML:0.9 0.00003655 0.3 AML other m 2020-09-21T17:55:34.91
IV.PETRA.HHN. ML:1.9 0.00033899999999999995 0.28 AML other m 2020-09-21T17:55:35.20
IV.PLLN.EHN. ML:1.7 0.000272 1.54 AML other m 2020-09-21T17:55:35.98
IV.PETRA.HHE. ML:1.8 0.000252 1.14 AML other m 2020-09-21T17:55:37.83
IV.MUCR.HHE. ML:1.6 0.00009565 1.18 AML other m 2020-09-21T17:55:41.95
IV.MUCR.HHN. ML:1.6 0.0001069 0.7 AML other m 2020-09-21T17:55:42.22
IV.RESU.HHE. ML:1.2 0.00004585 0.36 AML other m 2020-09-21T17:55:43.35
IV.SCIAR.HHE. ML:1.5 0.0000739 0.74 AML other m 2020-09-21T17:55:44.53
IV.RESU.HHN. ML:1.3 0.0000492 1.58 AML other m 2020-09-21T17:55:51.82
IV.SCIAR.HHN. ML:1.6 0.0000845 1.04 AML other m 2020-09-21T17:55:51.55
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