Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 04-08-2020 and time 12:40:07 (Italy) in region 4 km W San Teodoro (ME)

A magnitude ML 2.3 earthquake occured in region: 4 km W San Teodoro (ME), on

  • 04-08-2020 10:40:07 (UTC)
  • 04-08-2020 12:40:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8440, 14.6580 at 10 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
San Teodoro ME 4 1403 1403
Cesarò ME 5 2439 3842
Troina EN 8 9373 13215
Maniace CT 13 3765 16980
Cerami EN 14 2006 18986
Capizzi ME 16 3176 22162
Bronte CT 17 19172 41334
Gagliano Castelferrato EN 18 3593 44927
Maletto CT 18 3920 48847
San Fratello ME 20 3707 52554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km NW of Acireale (52622 inhabitants)
53 Km NW of Catania (314555 inhabitants)
65 Km NE of Caltanissetta (63360 inhabitants)
88 Km W of Messina (238439 inhabitants)
91 Km W of Reggio di Calabria (183035 inhabitants)
94 Km NE of Gela (75827 inhabitants)
100 Km N of Vittoria (63339 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 2.3 2020-08-04
10:40:07		 37.8435 14.6578 10 2020-11-19
12:36:56		 Bollettino Sismico Italiano INGV 81727821
Reviewed
Rev100 		ML 2.3 2020-08-04
10:40:07		 37.8428 14.6502 10 2020-08-04
10:54:34		 Sala Sismica INGV-Roma 81634281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-04 10:40:07 ± 0.12
Latitude 37.8435 ± 0.0072
Longitude 14.6578 ± 0.0102
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81727821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 786
Semi-minor axis of confidence ellipse (meter) 470
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 293
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.85980
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 81634281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-04 10:54:34

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 81727821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-07 07:48:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
AC.VLO.HHZ. 2020-08-04T10:42:03.15 3.0 undecidable manual Sn -7.02 0
IV.PE3.EHZ. 2020-08-04T10:41:54.89 3.0 undecidable manual Pg 17.07 0
IV.RONT.HHZ. 2020-08-04T10:41:48.98 3.0 negative manual Pn 3.79 0
AC.KBN.HHZ. 2020-08-04T10:41:39.81 3.0 positive manual Pg 12.31 0
IV.RIBO.EHZ.01 2020-08-04T10:41:37.46 3.0 negative manual Pn 3.53 0
IV.TRIF.CHZ. 2020-08-04T10:41:35.41 3.0 negative manual Pn -1.21 0
IV.MGAB.HHZ. 2020-08-04T10:41:27.33 3.0 undecidable manual Pn -1.56 0
IV.RMP.HHZ. 2020-08-04T10:41:21.35 3.0 positive manual Pg 8.72 0
IV.PANTE.HHZ. 2020-08-04T10:41:17.54 3.0 undecidable manual Sg 6.19 0
IV.PTRJ.HNZ. 2020-08-04T10:41:09.27 3.0 undecidable manual Pn 6.58 0
IV.MRLC.HHZ. 2020-08-04T10:41:02.59 3.0 undecidable manual Pg 7.56 0
IX.MNT3.HHZ.02 2020-08-04T10:40:56.01 3.0 negative manual Pn 0.5 0
IX.CSG3.HNZ.01 2020-08-04T10:40:54.27 3.0 undecidable manual Pn -1.55 0
IV.SERS.HHZ. 2020-08-04T10:40:43.65 3.0 undecidable manual Pn 4.02 0
IV.CAR1.HNZ. 2020-08-04T10:40:39.22 0.3 undecidable manual P 40 206.4378 38 -0.39 40
IV.SSY.HHZ. 2020-08-04T10:40:32.99 0.6 undecidable manual S 154 84.4488 50 0.66 38
IV.RAFF.HHZ. 2020-08-04T10:40:30.50 0.3 undecidable manual S 201 73.6707 50 1.05 49
IV.SSY.HHZ. 2020-08-04T10:40:21.13 0.3 undecidable manual P 154 84.4488 50 -0.56 59
IV.MSRU.HHZ. 2020-08-04T10:40:21.88 0.1 undecidable manual P 58 87.7455 50 -0.32 83
IV.RAFF.HHZ. 2020-08-04T10:40:20.36 0.3 undecidable manual P 201 73.6707 50 0.33 64
IV.MPNC.HHZ. 2020-08-04T10:40:19.01 0.3 undecidable manual P 61 69.4749 50 -0.37 64
IV.MUCR.HHE. 2020-08-04T10:40:17.66 0.3 undecidable manual S 40 29.1486 50 0.09 73
IV.MSFR.HHE. 2020-08-04T10:40:16.22 0.3 undecidable manual S 345 21.867 115 0.66 63
IV.CSLB.HHZ. 2020-08-04T10:40:16.83 0.1 undecidable manual P 281 53.502 50 -0.11 92
IV.PLLN.EHN. 2020-08-04T10:40:16.47 0.6 undecidable manual P 290 48.0186 50 0.39 44
IV.NOV.HHZ. 2020-08-04T10:40:15.47 0.3 undecidable manual P 64 46.62 50 -0.4 66
IV.EPZF.HHE. 2020-08-04T10:40:15.10 0.3 undecidable manual S 97 17.5713 120 0.88 58
IV.EMCN.HHN. 2020-08-04T10:40:13.95 0.3 undecidable manual P 100 33.4443 50 0.11 72
IV.ESML.HHZ. 2020-08-04T10:40:13.10 0.3 undecidable manual P 142 31.6461 50 -0.46 67
IV.ESLN.HHZ. 2020-08-04T10:40:13.98 0.3 undecidable manual P 121 32.3454 50 0.31 69
IV.GALF.HHE. 2020-08-04T10:40:13.65 0.3 undecidable manual S 209 16.7721 121 -0.33 71
IV.CAGR.HHE. 2020-08-04T10:40:13.36 0.3 undecidable manual P 209 28.2495 50 0.33 69
IV.ECHR.HHE. 2020-08-04T10:40:13.64 0.6 undecidable manual P 128 28.3494 50 0.59 43
IV.ENIC.HHZ. 2020-08-04T10:40:13.26 3.0 undecidable manual P 0
IV.EMSG.HHZ. 2020-08-04T10:40:12.65 0.1 undecidable manual P 96 25.6521 50 0 99
IV.MSFR.HHE. 2020-08-04T10:40:12.25 0.1 undecidable manual P 345 21.867 115 0.24 95
IV.MUCR.HHE. 2020-08-04T10:40:12.60 0.1 undecidable manual P 40 29.1486 50 -0.57 87
IV.EPZF.HHE. 2020-08-04T10:40:11.20 0.1 positive manual P 97 17.5713 120 -0.04 100
IV.GALF.HHE. 2020-08-04T10:40:10.16 0.1 positive manual P 209 16.7721 121 -0.94 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHN. ML:2.6 0.002445197 0.32 AML other m 2020-08-04T10:40:23.73
IV.EMSG.HHE. ML:2.6 0.002197129 0.3968 AML other m 2020-08-04T10:40:27.34
IV.ESML.HHE. ML:2.2 0.0007452233500000001 0.4992 AML other m 2020-08-04T10:40:26.76
IV.ESML.HHN. ML:2.2 0.0007985033 0.6784 AML other m 2020-08-04T10:40:24.25
IV.NOV.HHN. ML:2.5 0.0009336168 0.3584 AML other m 2020-08-04T10:40:25.87
IV.NOV.HHE. ML:2.6 0.0010214745999999999 0.7808 AML other m 2020-08-04T10:40:29.71
IV.CSLB.HHN. ML:1.6 0.00009553938000000001 0.4544 AML other m 2020-08-04T10:40:31.64
IV.CSLB.HHE. ML:1.6 0.00008366727 0.384 AML other m 2020-08-04T10:40:33.13
IV.MPNC.HHE. ML:2.5 0.00048276815 0.4992 AML other m 2020-08-04T10:40:37.32
IV.MPNC.HHN. ML:2.4 0.00044306425 0.7168 AML other m 2020-08-04T10:40:35.40
IV.RAFF.HHE. ML:2.1 0.0001854654 0.32 AML other m 2020-08-04T10:40:33.61
IV.RAFF.HHN. ML:2.0 0.00014537454999999998 0.3776 AML other m 2020-08-04T10:40:33.78
IV.SSY.HHE. ML:2.4 0.000354348 0.2816 AML other m 2020-08-04T10:40:38.06
IV.MSRU.HHE. ML:2.4 0.0002940963 0.3776 AML other m 2020-08-04T10:40:41.75
IV.MSRU.HHN. ML:2.2 0.00021279045000000002 0.5824 AML other m 2020-08-04T10:40:41.57
IV.CAR1.HHN. ML:2.3 0.000060852805 0.8384 AML other m 2020-08-04T10:41:10.08
IV.CAR1.HHE. ML:2.4 0.00006345545499999999 0.5568 AML other m 2020-08-04T10:41:11.56
IV.CAR1.HNN. ML:2.8 0.00019044741499999997 0.7296 AML other m 2020-08-04T10:40:58.45
IV.CAR1.HNE. ML:2.8 0.00018735895 0.6528 AML other m 2020-08-04T10:40:39.69
IV.SERS.HHN. ML:1.9 0.000017842415 1.0176 AML other m 2020-08-04T10:41:16.65
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