Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 04-08-2021 and time 22:55:17 (Italy) in region 1 km S Rodì Milici (ME)

A magnitude ML 1.1 earthquake occured in region: 1 km S Rodì Milici (ME), on

  • 04-08-2021 20:55:17 (UTC)
  • 04-08-2021 22:55:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.1020, 15.1710 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.

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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
Rodì Milici ME 1 2056 2056
Mazzarrà Sant'Andrea ME 3 1531 3587
Castroreale ME 4 2504 6091
Furnari ME 4 3784 9875
Terme Vigliatore ME 4 7395 17270
Barcellona Pozzo di Gotto ME 7 41583 58853
Falcone ME 8 2808 61661
Tripi ME 9 873 62534
Novara di Sicilia ME 10 1337 63871
Merì ME 10 2338 66209
Oliveri ME 10 2181 68390
Basicò ME 11 612 69002
Santa Lucia del Mela ME 11 4650 73652
San Filippo del Mela ME 12 7115 80767
Fondachelli-Fantina ME 13 1019 81786
Gualtieri Sicaminò ME 15 1807 83593
Milazzo ME 15 31646 115239
Pace del Mela ME 15 6239 121478
Antillo ME 15 919 122397
Condrò ME 16 493 122890
Montalbano Elicona ME 16 2287 125177
Mandanici ME 17 601 125778
San Pier Niceto ME 17 2837 128615
Patti ME 19 13431 142046
Librizzi ME 19 1660 143706
San Piero Patti ME 19 2915 146621
Torregrotta ME 19 7431 154052
Monforte San Giorgio ME 20 2777 156829
Montagnareale ME 20 1615 158444
Limina ME 20 836 159280

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Messina (238439 inhabitants)
41 Km W of Reggio di Calabria (183035 inhabitants)
54 Km N of Acireale (52622 inhabitants)
67 Km N of Catania (314555 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
Reviewed
Rev100 		ML 1.1 2021-08-04
20:55:17		 38.1022 15.1708 10 2021-08-04
21:57:02		 Sala Sismica INGV-Roma 93688201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-04 20:55:17 ± 0.06
Latitude 38.1022 ± 0.0036
Longitude 15.1708 ± 0.0046
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93688201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 424
Semi-minor axis of confidence ellipse (meter) 344
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 151
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 11
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42808
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 93688201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-04 21:57:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MNTV.EHZ. 2021-08-04T20:57:16.66 3.0 positive manual Pn 6.73 0
IT.PLTA.HNZ. 2021-08-04T20:57:15.40 3.0 undecidable manual Sg 14.48 0
IV.BDI.HHZ. 2021-08-04T20:57:01.21 3.0 undecidable manual Pn 3.44 0
IV.CRTC.HHZ. 2021-08-04T20:56:58.14 3.0 negative manual Pg 13.56 0
IX.NSC3.EHZ.02 2021-08-04T20:56:42.43 3.0 undecidable manual Sg 7.16 0
IX.RSF3.HHZ.02 2021-08-04T20:56:40.84 3.0 undecidable manual Sn 2.73 0
IV.LAV9.HHZ. 2021-08-04T20:56:27.32 3.0 positive manual Pg 8.52 0
IV.SACR.HHZ. 2021-08-04T20:56:18.64 3.0 undecidable manual Pg 9.86 0
IV.PTRJ.HNZ. 2021-08-04T20:56:09.77 3.0 undecidable manual Pn 1.2 0
IV.PZUN.HHZ. 2021-08-04T20:56:04.67 3.0 negative manual Pg 5.86 0
IV.MTGR.HHZ. 2021-08-04T20:55:48.30 3.0 positive manual Pn -0.09 0
IV.GIZZ.HHZ. 2021-08-04T20:55:38.93 3.0 positive manual P -0.41 0
IV.MCPD.HHZ. 2021-08-04T20:55:30.54 0.3 undecidable manual S 273 38.4282 50 -0.19 69
IV.MSRU.HHZ. 2021-08-04T20:55:29.70 0.3 undecidable manual S 59 34.4433 50 0.03 72
IV.MTTG.HHZ. 2021-08-04T20:55:26.52 0.1 undecidable manual P 103 47.5191 50 -0.11 92
IV.MCPD.HHZ. 2021-08-04T20:55:25.36 0.1 undecidable manual P 273 38.4282 50 0.13 94
IV.MSRU.HHZ. 2021-08-04T20:55:24.70 0.1 undecidable manual P 59 34.4433 50 0.08 95
IV.MILZ.HHZ. 2021-08-04T20:55:24.94 0.6 undecidable manual S 16 19.4694 117 -0.34 46
IV.AIO.HHZ. 2021-08-04T20:55:23.86 0.6 undecidable manual S 159 15.4734 122 -0.21 48
IV.NOV.HHZ. 2021-08-04T20:55:22.30 0.3 undecidable manual S 200 8.7801 138 0.03 75
IV.MILZ.HHZ. 2021-08-04T20:55:22.29 0.3 undecidable manual P 16 19.4694 117 0.2 71
IV.AIO.HHZ. 2021-08-04T20:55:21.44 0.3 undecidable manual P 159 15.4734 122 0.05 74
IV.NOV.HHZ. 2021-08-04T20:55:20.40 0.1 undecidable manual P 200 8.7801 138 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NOV.HHE. ML:1.7 0.0007273976 0.1536 AML other m 2021-08-04T20:55:22.90
IV.NOV.HHN. ML:1.7 0.00071148855 0.1664 AML other m 2021-08-04T20:55:22.55
IV.MCPD.HHE. ML:1.0 0.000036 0.38 AML other m 2021-08-04T20:55:32.67
IV.MCPD.HHN. ML:0.8 0.00002523893 0.2432 AML other m 2021-08-04T20:55:33.60
IV.MSRU.HHE. ML:1.1 0.000057014175 0.2944 AML other m 2021-08-04T20:55:32.57
IV.MSRU.HHN. ML:1.2 0.00006074121 0.8704 AML other m 2021-08-04T20:55:39.81
IV.MTTG.HHE. ML:1.0 0.000028496385 0.768 AML other m 2021-08-04T20:55:47.87
IV.MTTG.HHN. ML:1.1 0.000033755355 0.32 AML other m 2021-08-04T20:55:41.22
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