Earthquake with magnitude of ML 1.8 on date 04-08-2020 and time 23:14:28 (Italy) in region 6 km W San Teodoro (ME)

A magnitude ML 1.8 earthquake occured in region: 6 km W San Teodoro (ME), on

  • 04-08-2020 21:14:28 (UTC)
  • 04-08-2020 23:14:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.84, 14.63 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

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 6 1403 1403
CesarĂ² ME 7 2439 3842
Troina EN 7 9373 13215
Cerami EN 12 2006 15221
Capizzi ME 14 3176 18397
Maniace CT 15 3765 22162
Gagliano Castelferrato EN 17 3593 25755
Bronte CT 19 19172 44927
San Fratello ME 19 3707 48634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km NW of Acireale (52622 inhabitants)
55 Km NW of Catania (314555 inhabitants)
64 Km NE of Caltanissetta (63360 inhabitants)
90 Km W of Messina (238439 inhabitants)
93 Km NE of Gela (75827 inhabitants)
93 Km W of Reggio di Calabria (183035 inhabitants)
100 Km N of Vittoria (63339 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.8 2020-08-04
21:14:28
37.84 14.63 9 2020-08-04
21:27:19
Sala Sismica INGV-Roma 81657141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-04 21:14:28 ± 0.14
Latitude 37.84 ± 0.01
Longitude 14.63 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81657141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 873
Semi-minor axis of confidence ellipse (meter) 566
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 294
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
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
Epicentral distance of station farthest from the epicenter (degree) 0.76892
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 21
Type of magnitude ML
Reference to an origin 81657141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-04 21:27:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-08-04T21:14:54.47 0.3 undecidable manual S 153 0.7689 50 0.44 64
IV.HLNI.HHZ. 2020-08-04T21:14:46.84 0.3 undecidable manual S 159 0.5297 50 -0.09 71
IV.NOV.HHZ. 2020-08-04T21:14:44.85 0.6 undecidable manual S 65 0.4371 50 0.67 42
IV.SSY.HHZ. 2020-08-04T21:14:43.02 1.0 positive manual P 153 0.7689 50 -0.11 23
IV.MPNC.HHZ. 2020-08-04T21:14:40.86 0.3 undecidable manual P 62 0.6421 50 -0.09 70
IV.PLLN.EHZ. 2020-08-04T21:14:39.62 3.0 undecidable manual P 0
IV.MUCR.HHZ. 2020-08-04T21:14:38.80 0.3 undecidable manual S 43 0.2743 106 -0.44 70
IV.HLNI.HHZ. 2020-08-04T21:14:38.59 0.3 positive manual P 159 0.5297 50 -0.44 66
IV.CSLB.HHZ. 2020-08-04T21:14:37.83 0.6 undecidable manual P 282 0.4641 50 -0.09 48
IV.EPZF.HHZ. 2020-08-04T21:14:36.65 0.6 undecidable manual S 96 0.1772 114 0.96 38
IV.MSFR.HHZ. 2020-08-04T21:14:36.87 0.3 undecidable manual S 350 0.1934 112 0.61 68
IV.NOV.HHZ. 2020-08-04T21:14:36.88 0.6 negative manual P 65 0.4371 50 -0.56 43
IV.ESML.HHE. 2020-08-04T21:14:35.36 0.3 undecidable manual P 139 0.2977 50 0.3 72
IV.GALF.HHZ. 2020-08-04T21:14:34.43 0.3 undecidable manual S 202 0.143 118 -0.09 78
IV.CAGR.HHE. 2020-08-04T21:14:34.75 0.1 undecidable manual P 206 0.2455 108 0.78 83
IV.MUCR.HHZ. 2020-08-04T21:14:33.83 1.0 negative manual P 43 0.2743 106 -0.76 21
IV.EMSG.HHZ. 2020-08-04T21:14:33.92 0.6 negative manual P 95 0.25 107 -0.15 50
IV.EPZF.HHZ. 2020-08-04T21:14:32.30 0.1 negative manual P 96 0.1772 114 -0.24 100
IV.MSFR.HHZ. 2020-08-04T21:14:32.85 0.3 undecidable manual P 350 0.1934 112 -0.02 78
IV.GALF.HHZ. 2020-08-04T21:14:31.26 0.1 positive manual P 202 0.143 118 -0.61 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2.4 0.0023614285 0.3456 AML other m 2020-08-04T21:14:37.93
IV.GALF.HHN. ML:2.4 0.002214575 0.3456 AML other m 2020-08-04T21:14:36.71
IV.GALF.HNE. ML:1.5 0.00027463565 0.5248 AML other m 2020-08-04T21:14:37.93
IV.GALF.HNN. ML:1.5 0.00031280865 0.3328 AML other m 2020-08-04T21:14:37.91
IV.EPZF.HHE. ML:1.9 0.00064736815 0.3968 AML other m 2020-08-04T21:14:39.58
IV.EPZF.HHN. ML:2.1 0.0009293303 0.3712 AML other m 2020-08-04T21:14:39.42
IV.MSFR.HHE. ML:1.2 0.0001071497 0.5248 AML other m 2020-08-04T21:14:38.68
IV.MSFR.HHN. ML:1.2 0.0001232005 0.512 AML other m 2020-08-04T21:14:39.37
IV.MUCR.HHE. ML:1.7 0.00022749065 0.3456 AML other m 2020-08-04T21:14:39.65
IV.MUCR.HHN. ML:1.8 0.00028339135 0.4096 AML other m 2020-08-04T21:14:40.77
IV.EMSG.HHE. ML:2.2 0.00097915 0.3584 AML other m 2020-08-04T21:14:44.29
IV.EMSG.HHN. ML:2.1 0.0006919126 0.3968 AML other m 2020-08-04T21:14:45.66
IV.NOV.HHE. ML:2 0.00028014585 0.384 AML other m 2020-08-04T21:14:50.76
IV.NOV.HHN. ML:1.9 0.0002041288 0.3584 AML other m 2020-08-04T21:14:47.10
IV.CSLB.HHE. ML:1.1 3.544323E-5 1.0368 AML other m 2020-08-04T21:14:57.63
IV.CSLB.HHN. ML:1.4 5.7795565E-5 0.9088 AML other m 2020-08-04T21:14:52.71
IV.HLNI.HHE. ML:1.3 3.8737195E-5 0.4224 AML other m 2020-08-04T21:14:49.48
IV.HLNI.HHN. ML:1.2 3.219517E-5 0.3968 AML other m 2020-08-04T21:14:50.43
IV.MPNC.HHE. ML:2 0.00016314625 0.6912 AML other m 2020-08-04T21:14:57.37
IV.MPNC.HHN. ML:2 0.0001472284 0.6144 AML other m 2020-08-04T21:14:56.38
IV.SSY.HHE. ML:2.1 0.00015414318 0.9344 AML other m 2020-08-04T21:14:51.60
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download