Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 27-09-2020 and time 08:02:34 (UTC) in region 1 km E Randazzo (CT)

A magnitude ML 2.0 earthquake occured in region: 1 km E Randazzo (CT), on

  • 27-09-2020 08:02:34 (UTC)
  • 27-09-2020 10:02:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8760, 14.9550 at 29 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
Randazzo CT 1 10900 10900
Santa Domenica Vittoria ME 5 980 11880
Roccella Valdemone ME 8 666 12546
Moio Alcantara ME 9 717 13263
Maletto CT 9 3920 17183
Malvagna ME 10 733 17916
Maniace CT 13 3765 21681
Floresta ME 13 485 22166
Bronte CT 14 19172 41338
Castiglione di Sicilia CT 15 3215 44553
Francavilla di Sicilia ME 16 3945 48498
Linguaglossa CT 17 5403 53901
Montalbano Elicona ME 17 2287 56188
Motta Camastra ME 19 845 57033
San Piero Patti ME 20 2915 59948

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Acireale (52622 inhabitants)
43 Km N of Catania (314555 inhabitants)
64 Km SW of Messina (238439 inhabitants)
66 Km W of Reggio di Calabria (183035 inhabitants)
89 Km NE of Caltanissetta (63360 inhabitants)
95 Km NW of Siracusa (122291 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 2.0 2020-09-27
08:02:34		 37.8758 14.9548 29 2021-02-26
14:56:01		 Bollettino Sismico Italiano INGV 84239751
Reviewed
Rev200 		ML 1.6 2020-09-27
08:02:32		 37.896 14.908 32 2020-12-28
09:44:35		 Sala Operativa INGV_OE (Catania) 83294241
Reviewed
Rev100 		ML 2.0 2020-09-27
08:02:33		 37.8823 14.9398 31 2020-09-27
08:23:10		 Sala Sismica INGV-Roma 83294011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-27 08:02:34 ± 0.21
Latitude 37.8758 ± 0.0072
Longitude 14.9548 ± 0.0125
Depth (km) 29 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84239751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1071
Semi-minor axis of confidence ellipse (meter) 676
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 91
Circular confidence region, given by single value of horizontal uncertainty (meter) 1070.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.72395
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 83294011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-27 08:23:10

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 84239751
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 09:44:11

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 83294241
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-09-27 08:38:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-09-27T08:02:58.76 0.3 undecidable manual S 172 80.364 104 0.22 64
IV.HCRL.HHZ. 2020-09-27T08:02:54.51 0.6 undecidable manual S 174 66.0894 108 -0.38 41
IV.HLNI.HHZ. 2020-09-27T08:02:52.56 0.6 undecidable manual S 187 58.9965 110 -0.52 40
IV.MSFR.HHE. 2020-09-27T08:02:47.28 0.6 undecidable manual S 299 36.2415 123 -0.37 44
IV.SSY.HHZ. 2020-09-27T08:02:47.95 0.3 undecidable manual P 172 80.364 104 -0.23 62
IV.HCRL.HHZ. 2020-09-27T08:02:45.85 0.3 undecidable manual P 174 66.0894 108 -0.23 64
IV.HLNI.HHZ. 2020-09-27T08:02:44.59 0.3 undecidable manual P 187 58.9965 110 -0.44 62
IV.NOV.HHE. 2020-09-27T08:02:44.82 0.1 undecidable manual S 43 23.1546 137 -0.13 96
IV.MUCR.HHZ. 2020-09-27T08:02:44.07 0.6 undecidable manual S 339 19.869 142 -0.3 47
IV.MPNC.HHN. 2020-09-27T08:02:43.54 0.6 undecidable manual P 49 45.9207 116 0.35 44
IV.ECTS.HHZ. 2020-09-27T08:02:43.57 0.6 undecidable manual S 87 14.5743 150 -0.01 49
IV.EPZF.HHZ. 2020-09-27T08:02:43.55 0.1 undecidable manual S 236 10.2786 158 0.47 90
IV.GALF.HHZ. 2020-09-27T08:02:43.44 0.3 undecidable manual P 242 38.628 121 1.24 47
IV.EMSG.HHZ. 2020-09-27T08:02:42.62 0.6 undecidable manual S 184 6.0939 167 -0.13 49
IV.MSFR.HHE. 2020-09-27T08:02:41.69 0.6 undecidable manual P 299 36.2415 123 -0.2 46
IV.EPOZ.HHZ. 2020-09-27T08:02:41.33 0.3 undecidable manual P 138 30.5472 128 0.16 70
IV.NOV.HHE. 2020-09-27T08:02:40.35 0.3 undecidable manual P 43 23.1546 137 0.01 73
IV.AIO.HHE. 2020-09-27T08:02:40.85 0.6 undecidable manual P 66 26.5512 133 0.14 47
IV.ECBD.HHE. 2020-09-27T08:02:40.05 0.1 undecidable manual P 133 15.6732 148 0.42 91
IV.ECTS.HHZ. 2020-09-27T08:02:39.51 0.3 undecidable manual P 87 14.5743 150 -0.04 74
IV.EPZF.HHZ. 2020-09-27T08:02:39.20 0.1 negative manual P 236 10.2786 158 -0.06 98
IV.EMSG.HHZ. 2020-09-27T08:02:39.09 0.1 undecidable manual P 184 6.0939 167 0.02 100
IV.MUCR.HHZ. 2020-09-27T08:02:39.62 0.1 positive manual P 339 19.869 142 -0.38 91
IV.EPIT.HHE. 2020-09-27T08:02:39.43 0.6 undecidable manual P 129 11.4774 156 0.1 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHE. ML:2.1 0.0007231872500000001 0.5376 AML other m 2020-09-27T08:02:41.01
IV.ECTS.HHE. ML:1.6 0.00018620605 0.3008 AML other m 2020-09-27T08:02:43.77
IV.EPZF.HHE. ML:2.1 0.0006897178 0.32 AML other m 2020-09-27T08:02:43.86
IV.ECTS.HHN. ML:1.8 0.0002801633 0.2816 AML other m 2020-09-27T08:02:43.71
IV.MUCR.HHN. ML:1.7 0.00020227715000000003 0.3008 AML other m 2020-09-27T08:02:44.23
IV.EPZF.HHN. ML:2.2 0.00075938935 0.3584 AML other m 2020-09-27T08:02:44.52
IV.EMSG.HHN. ML:2.0 0.0005588912999999999 0.4352 AML other m 2020-09-27T08:02:45.31
IV.HCRL.HHE. ML:2.0 0.0001510707 0.16 AML other m 2020-09-27T08:02:55.05
IV.HCRL.HHN. ML:1.8 0.00009278106500000002 0.1152 AML other m 2020-09-27T08:02:55.16
IV.SSY.HHN. ML:2.4 0.00032343449999999995 0.256 AML other m 2020-09-27T08:02:58.94
IV.SSY.HHE. ML:2.3 0.00024007685 0.2176 AML other m 2020-09-27T08:03:01.81
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