Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 06-05-2021 and time 01:33:11 (Italy) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 1.1 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 05-05-2021 23:33:11 (UTC)
  • 06-05-2021 01:33:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.3060, 15.1270 at 11 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
Milazzo ME 14 31646 31646
Merì ME 19 2338 33984
Terme Vigliatore ME 19 7395 41379
Barcellona Pozzo di Gotto ME 19 41583 82962
San Filippo del Mela ME 20 7115 90077

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Messina (238439 inhabitants)
50 Km W of Reggio di Calabria (183035 inhabitants)
77 Km N of Acireale (52622 inhabitants)
89 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
Bulletin
Rev1000 		ML 1.1 2021-05-05
23:33:11		 38.3063 15.1268 11 2021-12-29
11:12:05		 Bollettino Sismico Italiano INGV 91376371
Reviewed
Rev100 		ML 1.8 2021-05-05
23:33:11		 38.2942 15.1173 10 2021-05-05
23:47:12		 Sala Sismica INGV-Roma 89815171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-05 23:33:11 ± 0.09
Latitude 38.3063 ± 0.0054
Longitude 15.1268 ± 0.0046
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91376371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 580
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 179
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
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) 0.08903
Epicentral distance of station farthest from the epicenter (degree) 0.36243
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.6
Num. used stations 8
Type of magnitude ML
Reference to an origin 91376371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-02 16:18:59

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 89815171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-05 23:47:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AIO.HHE. 2021-05-05T23:33:24.03 0.6 undecidable manual S 166 38.3283 50 -0.13 47
IV.MCPD.HHE. 2021-05-05T23:33:23.93 0.6 undecidable manual S 239 40.2264 50 -0.75 40
IV.MSRU.HHZ. 2021-05-05T23:33:22.65 0.6 undecidable manual S 98 33.5442 50 -0.24 47
IV.MPNC.HHE. 2021-05-05T23:33:20.69 0.6 undecidable manual S 132 26.4513 50 -0.32 47
IV.MCPD.HHE. 2021-05-05T23:33:19.12 0.3 undecidable manual P 239 40.2264 50 0.06 70
IV.AIO.HHE. 2021-05-05T23:33:19.02 0.3 undecidable manual P 166 38.3283 50 0.26 67
IV.MUCR.HHZ. 2021-05-05T23:33:18.54 0.3 undecidable manual P 217 36.6411 50 0.04 70
IV.IVGP.HHE. 2021-05-05T23:33:18.25 0.6 undecidable manual S 305 17.5713 121 -0.28 46
IV.MSRU.HHZ. 2021-05-05T23:33:18.18 0.3 undecidable manual P 98 33.5442 50 0.15 68
IV.IVUG.HHE. 2021-05-05T23:33:17.88 0.6 undecidable manual S 309 15.7731 124 -0.12 48
IV.NOV.HHE. 2021-05-05T23:33:17.65 0.3 undecidable manual P 178 30.9468 50 0.02 71
IV.IVPL.HHZ. 2021-05-05T23:33:17.88 0.6 undecidable manual S 301 14.9739 126 0.12 49
IV.MILZ.HHZ. 2021-05-05T23:33:16.07 0.3 undecidable manual S 113 9.879 137 -0.37 69
IV.MPNC.HHE. 2021-05-05T23:33:16.90 0.3 undecidable manual P 132 26.4513 50 -0.05 72
IV.ILOS.HHZ. 2021-05-05T23:33:15.63 0.3 undecidable manual P 315 21.9669 50 -0.61 65
IV.IVUG.HHE. 2021-05-05T23:33:15.57 0.3 undecidable manual P 309 15.7731 124 0.36 69
IV.IVPL.HHZ. 2021-05-05T23:33:15.50 0.1 undecidable manual P 301 14.9739 126 0.43 91
IV.IVGP.HHE. 2021-05-05T23:33:15.63 0.3 undecidable manual P 305 17.5713 121 0.12 72
IV.MILZ.HHZ. 2021-05-05T23:33:14.33 0.1 positive manual P 113 9.879 137 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MILZ.HHE. ML:0.7 0.00006527656500000001 0.0768 AML other m 2021-05-05T23:33:16.19
IV.MILZ.HHN. ML:0.6 0.000057170659999999995 0.0896 AML other m 2021-05-05T23:33:16.19
IV.ILOS.HNE. ML:1.9 0.00048441920000000005 0.0512 AML other m 2021-05-05T23:33:19.52
IV.ILOS.HHE. ML:1.8 0.0004044167 0.0384 AML other m 2021-05-05T23:33:19.53
IV.ILOS.HHN. ML:1.6 0.0002381446 0.0512 AML other m 2021-05-05T23:33:19.54
IV.ILOS.HNN. ML:1.6 0.00027289945 0.0512 AML other m 2021-05-05T23:33:19.58
IV.MSRU.HHN. ML:0.4 0.000008139284 0.448 AML other m 2021-05-05T23:33:23.39
IV.MSRU.HHE. ML:0.4 0.000009270573 1.1136 AML other m 2021-05-05T23:33:23.64
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