Earthquake with magnitude of ML 1.6 on date 04-07-2021 and time 14:20:08 (Italy) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 1.6 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 04-07-2021 12:20:08 (UTC)
  • 04-07-2021 14:20:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.196, 15.184 at 10 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
Milazzo ME 6 31646 31646
Barcellona Pozzo di Gotto ME 6 41583 73229
Merì ME 6 2338 75567
Terme Vigliatore ME 7 7395 82962
San Filippo del Mela ME 8 7115 90077
Rodì Milici ME 9 2056 92133
Santa Lucia del Mela ME 11 4650 96783
Pace del Mela ME 11 6239 103022
Castroreale ME 11 2504 105526
Furnari ME 11 3784 109310
Gualtieri Sicaminò ME 12 1807 111117
Falcone ME 12 2808 113925
Mazzarrà Sant'Andrea ME 12 1531 115456
Condrò ME 13 493 115949
Oliveri ME 13 2181 118130
Torregrotta ME 15 7431 125561
San Pier Niceto ME 15 2837 128398
Venetico ME 16 3911 132309
Valdina ME 16 1355 133664
Roccavaldina ME 17 1133 134797
Spadafora ME 17 5021 139818
Tripi ME 18 873 140691
Monforte San Giorgio ME 18 2777 143468
Basicò ME 18 612 144080

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Messina (238439 inhabitants)
41 Km W of Reggio di Calabria (183035 inhabitants)
65 Km N of Acireale (52622 inhabitants)
77 Km N of Catania (314555 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.6 2021-07-04
12:20:08
38.1955 15.1842 10 2021-07-04
12:33:43
Sala Sismica INGV-Roma 92228101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-04 12:20:08 ± 0.07
Latitude 38.1955 ± 0.0045
Longitude 15.1842 ± 0.0080
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92228101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 574
Semi-minor axis of confidence ellipse (meter) 476
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
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) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.36423
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 92228101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-04 12:33:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ECTS.HHE. 2021-07-04T12:20:21.64 3.0 undecidable manual S 189 0.3175 50 0.77 0
IV.MUCR.HHZ. 2021-07-04T12:20:19.50 0.6 undecidable manual S 238 0.2878 50 -0.49 44
IV.MSRU.HHZ. 2021-07-04T12:20:19.02 0.6 undecidable manual S 75 0.2635 50 -0.25 46
IV.AIO.HHE. 2021-07-04T12:20:17.96 0.6 undecidable manual S 170 0.2275 111 -0.09 48
IV.MCPD.HHE. 2021-07-04T12:20:16.12 0.1 undecidable manual P 258 0.3642 50 -0.4 88
IV.ECTS.HHE. 2021-07-04T12:20:16.26 0.1 undecidable manual P 189 0.3175 50 0.54 85
IV.NOV.HHZ. 2021-07-04T12:20:16.09 0.6 undecidable manual S 193 0.1718 117 0 50
IV.ILOS.HHE. 2021-07-04T12:20:16.16 0.1 undecidable manual P 324 0.3112 50 0.55 85
IV.AIO.HHE. 2021-07-04T12:20:14.34 0.1 undecidable manual P 170 0.2275 111 0.25 93
IV.IVGP.HHE. 2021-07-04T12:20:14.94 0.1 undecidable manual P 319 0.2671 50 0.09 96
IV.MSRU.HHZ. 2021-07-04T12:20:14.49 1.0 undecidable manual P 75 0.2635 50 -0.31 23
IV.MPNC.HHZ. 2021-07-04T12:20:14.95 0.6 undecidable manual S 110 0.1412 121 -0.11 49
IV.IVUG.HHE. 2021-07-04T12:20:14.56 0.1 undecidable manual P 322 0.2536 50 -0.07 96
IV.MUCR.HHZ. 2021-07-04T12:20:14.96 0.6 undecidable manual P 238 0.2878 50 -0.25 46
IV.IVPL.HHE. 2021-07-04T12:20:14.32 0.1 undecidable manual P 319 0.241 110 -0.07 97
IV.MILZ.HHZ. 2021-07-04T12:20:13.24 0.6 undecidable manual S 26 0.0845 136 -0.1 49
IV.MPNC.HHZ. 2021-07-04T12:20:12.27 0.1 undecidable manual P 110 0.1412 121 -0.1 98
IV.NOV.HHZ. 2021-07-04T12:20:12.92 0.6 negative manual P 193 0.1718 117 -0.04 49
IV.MILZ.HHZ. 2021-07-04T12:20:11.41 0.1 negative manual P 26 0.0845 136 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MILZ.HHE. ML:2.2 0.00212 0.3 AML other m 2021-07-04T12:20:13.34
IV.MILZ.HHN. ML:2 0.001315 0.44 AML other m 2021-07-04T12:20:13.53
IV.MPNC.HHN. ML:1.6 0.000329 0.18 AML other m 2021-07-04T12:20:15.03
IV.MPNC.HHE. ML:1.5 0.0002975 0.4 AML other m 2021-07-04T12:20:16.50
IV.MSRU.HHN. ML:1.6 0.0001785 0.26 AML other m 2021-07-04T12:20:19.17
IV.MUCR.HHN. ML:1.5 0.000142 0.32 AML other m 2021-07-04T12:20:19.87
IV.MSRU.HHE. ML:1.6 0.0001835 0.14 AML other m 2021-07-04T12:20:19.79
IV.MUCR.HHE. ML:1 4.9456575E-5 0.1792 AML other m 2021-07-04T12:20:21.07
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