Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 04-08-2020 and time 13:11:28 (Italy) in region 4 km W San Teodoro (ME)

A magnitude ML 2.2 earthquake occured in region: 4 km W San Teodoro (ME), on

  • 04-08-2020 11:11:28 (UTC)
  • 04-08-2020 13:11:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8400, 14.6530 at 6 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
Cerami EN 13 2006 15221
Maniace CT 14 3765 18986
Capizzi ME 15 3176 22162
Bronte CT 17 19172 41334
Gagliano Castelferrato EN 18 3593 44927
Maletto CT 19 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)
54 Km NW of Catania (314555 inhabitants)
65 Km NE of Caltanissetta (63360 inhabitants)
88 Km W of Messina (238439 inhabitants)
92 Km W of Reggio di Calabria (183035 inhabitants)
93 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 2.2 2020-08-04
11:11:28		 37.8405 14.6527 7 2020-11-19
12:36:56		 Bollettino Sismico Italiano INGV 81744031
Reviewed
Rev100 		ML 2.2 2020-08-04
11:11:28		 37.8422 14.654 7 2020-08-04
11:19:55		 Sala Sismica INGV-Roma 81635291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-04 11:11:28 ± 0.12
Latitude 37.8405 ± 0.0063
Longitude 14.6527 ± 0.0091
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81744031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 820
Semi-minor axis of confidence ellipse (meter) 513
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75993
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 81635291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-04 11:19:55

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 81744031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-07 17:57:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-08-04T11:11:55.08 0.3 undecidable manual S 154 84.3489 50 0.43 62
IV.RAFF.HHZ. 2020-08-04T11:11:51.92 0.3 undecidable manual S 201 73.1712 50 0.26 66
IV.HLNI.HHZ. 2020-08-04T11:11:47.78 0.3 undecidable manual S 160 57.8976 50 0.19 69
IV.SSY.HHZ. 2020-08-04T11:11:43.09 0.1 undecidable manual P 154 84.3489 50 -0.57 79
IV.RAFF.HHZ. 2020-08-04T11:11:42.32 0.1 undecidable manual P 201 73.1712 50 0.38 86
IV.ENIC.HHZ. 2020-08-04T11:11:39.95 3.0 undecidable manual P 0
IV.MUCR.HHE. 2020-08-04T11:11:39.12 0.3 undecidable manual S 41 29.6481 102 -0.06 74
IV.HLNI.HHZ. 2020-08-04T11:11:38.77 0.1 undecidable manual P 160 57.8976 50 -0.82 76
IV.PLLN.EHE. 2020-08-04T11:11:38.20 0.3 undecidable manual P 291 47.7189 50 0.19 70
IV.MSFR.HHE. 2020-08-04T11:11:37.20 0.3 undecidable manual S 346 22.0668 106 0.56 67
IV.EPZF.HHZ. 2020-08-04T11:11:35.90 0.3 undecidable manual S 96 17.9709 110 0.61 66
IV.ESLN.HHZ. 2020-08-04T11:11:35.01 0.3 undecidable manual P 120 32.6451 101 -0.3 70
IV.GALF.HHZ. 2020-08-04T11:11:34.79 0.6 undecidable manual S 208 16.2726 112 0.07 51
IV.CAGR.HHZ. 2020-08-04T11:11:34.65 0.3 undecidable manual P 209 27.6501 103 0.3 71
IV.EMSG.HHZ. 2020-08-04T11:11:34.09 0.1 undecidable manual P 95 26.1516 104 0.05 100
IV.MUCR.HHE. 2020-08-04T11:11:34.18 0.1 positive manual P 41 29.6481 102 -0.55 88
IV.MSFR.HHE. 2020-08-04T11:11:33.10 0.1 undecidable manual P 346 22.0668 106 -0.16 98
IV.EPZF.HHZ. 2020-08-04T11:11:32.78 0.1 negative manual P 96 17.9709 110 0.3 96
IV.GALF.HHZ. 2020-08-04T11:11:31.73 0.1 positive manual P 208 16.2726 112 -0.43 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HNN. ML:1.8 0.00070268495 0.2432 AML other m 2020-08-04T11:11:38.26
IV.GALF.HHN. ML:2.8 0.005520065000000001 0.32 AML other m 2020-08-04T11:11:40.92
IV.GALF.HNE. ML:1.9 0.0007723558 0.3904 AML other m 2020-08-04T11:11:39.06
IV.GALF.HHE. ML:2.8 0.0063621935 0.3584 AML other m 2020-08-04T11:11:38.44
IV.EPZF.HHN. ML:2.4 0.0022847495 0.4416 AML other m 2020-08-04T11:11:39.91
IV.EPZF.HHE. ML:2.3 0.0019037285 0.32 AML other m 2020-08-04T11:11:40.07
IV.EMSG.HHN. ML:2.5 0.0017151255 0.4224 AML other m 2020-08-04T11:11:46.90
IV.EMSG.HHE. ML:2.5 0.001982446 0.32 AML other m 2020-08-04T11:11:44.97
IV.CAGR.HHE. ML:2.2 0.0008177906500000001 0.2752 AML other m 2020-08-04T11:11:43.74
IV.CAGR.HHN. ML:2.3 0.0011429166500000001 0.3968 AML other m 2020-08-04T11:11:46.51
IV.HLNI.HHE. ML:1.7 0.00011725284999999999 0.1984 AML other m 2020-08-04T11:11:49.76
IV.HLNI.HHN. ML:1.6 0.00009137832 0.2176 AML other m 2020-08-04T11:11:52.53
IV.RAFF.HHE. ML:2.0 0.00015259355000000002 0.32 AML other m 2020-08-04T11:11:55.20
IV.RAFF.HHN. ML:1.9 0.00011861669999999999 0.3008 AML other m 2020-08-04T11:11:55.20
IV.SSY.HHE. ML:2.4 0.00035817034999999995 0.3392 AML other m 2020-08-04T11:11:57.34
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