Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 20-10-2020 and time 05:26:29 (UTC) in region Tirreno Meridionale (MARE)

A magnitude ML 1.8 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 20-10-2020 05:26:29 (UTC)
  • 20-10-2020 07:26:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.4780, 15.4710 at 132 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of Messina (238439 inhabitants)
44 Km NW of Reggio di Calabria (183035 inhabitants)
92 Km SW of Lamezia Terme (70714 inhabitants)
100 Km N 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
Bulletin
Rev1000 		ML 1.8 2020-10-20
05:26:29		 38.4782 15.4707 133 2021-02-26
14:56:06		 Bollettino Sismico Italiano INGV 84865241
Reviewed
Rev100 		ML 1.9 2020-10-20
05:26:29		 38.4697 15.4753 132 2020-10-20
05:34:35		 Sala Sismica INGV-Roma 83943121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-20 05:26:29 ± 0.18
Latitude 38.4782 ± 0.0090
Longitude 15.4707 ± 0.0138
Depth (km) 133 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84865241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1243
Semi-minor axis of confidence ellipse (meter) 810
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 129
Circular confidence region, given by single value of horizontal uncertainty (meter) 1240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
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) 0.21584
Epicentral distance of station farthest from the epicenter (degree) 1.53784
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 83943121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-20 05:34:35

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 84865241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-20 08:54:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.TIP.HHZ. 2020-10-20T05:27:14.70 0.6 undecidable manual S 55 135.7641 131 0.37 42
IV.CET2.HHZ. 2020-10-20T05:27:12.10 0.6 undecidable manual S 20 123.7872 134 -0.32 44
IV.CAR1.HHZ. 2020-10-20T05:27:09.90 0.6 undecidable manual S 36 107.2149 138 -0.03 49
IV.PLAC.HHZ. 2020-10-20T05:27:06.70 0.6 undecidable manual S 92 84.1491 145 -0.13 50
IV.IVPL.HHZ. 2020-10-20T05:27:03.20 0.6 undecidable manual S 255 44.1225 160 0.37 51
MN.CEL.HHZ. 2020-10-20T05:27:02.70 0.6 undecidable manual S 123 44.0226 160 -0.13 54
IV.JOPP.HHZ. 2020-10-20T05:27:02.50 0.6 undecidable manual S 68 38.7279 162 0.04 55
IV.MILZ.HHN. 2020-10-20T05:27:02.30 0.6 undecidable manual S 222 30.9468 166 0.3 53
IV.MSRU.HHZ. 2020-10-20T05:27:01.30 0.6 undecidable manual S 172 23.9538 169 -0.37 53
MN.CUC.HHE. 2020-10-20T05:26:58.89 0.6 undecidable manual P 10 170.6958 124 -0.09 40
IV.GRIS.HNE. 2020-10-20T05:26:56.20 0.6 undecidable manual P 13 143.8449 129 -0.1 44
MN.TIP.HHZ. 2020-10-20T05:26:55.72 0.6 undecidable manual P 55 135.7641 131 0.2 44
IV.CET2.HHZ. 2020-10-20T05:26:54.62 0.3 undecidable manual P 20 123.7872 134 0.2 68
IV.CAR1.HHZ. 2020-10-20T05:26:52.89 0.6 undecidable manual P 36 107.2149 138 -0.09 48
IV.PLAC.HHZ. 2020-10-20T05:26:51.29 0.1 negative manual P 92 84.1491 145 0.1 100
IV.JOPP.HHZ. 2020-10-20T05:26:48.66 0.6 undecidable manual P 68 38.7279 162 -0.01 55
IV.MILZ.HHN. 2020-10-20T05:26:48.17 0.6 undecidable manual P 222 30.9468 166 -0.23 54
IV.MSRU.HHZ. 2020-10-20T05:26:48.21 0.6 undecidable manual P 172 23.9538 169 0 57
MN.CEL.HHZ. 2020-10-20T05:26:48.89 0.6 undecidable manual P 123 44.0226 160 0.01 55
IV.IVPL.HHZ. 2020-10-20T05:26:48.66 0.6 undecidable manual P 255 44.1225 160 -0.22 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HHN. ML:1.8 0.000035260565000000003 0.2592 AML other m 2020-10-20T05:27:03.37
IV.JOPP.HHN. ML:1.9 0.00004754179999999999 0.1184 AML other m 2020-10-20T05:27:03.45
IV.JOPP.HHE. ML:1.8 0.000039262365 0.1376 AML other m 2020-10-20T05:27:04.29
MN.CEL.HHE. ML:1.8 0.000036265785 0.3008 AML other m 2020-10-20T05:27:04.56
IV.PLAC.HHN. ML:1.7 0.000022763345 0.4 AML other m 2020-10-20T05:27:07.02
IV.PLAC.HHE. ML:1.8 0.00002838521 0.2176 AML other m 2020-10-20T05:27:08.57
IV.CAR1.HHE. ML:1.9 0.000036803645000000004 0.2592 AML other m 2020-10-20T05:27:11.69
IV.CAR1.HHN. ML:1.9 0.000033842609999999994 0.4192 AML other m 2020-10-20T05:27:11.57
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