Earthquake with magnitude of ML 1.0 on date 21-10-2021 and time 02:39:01 (Italy) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 1.0 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 21-10-2021 00:39:01 (UTC)
  • 21-10-2021 02:39:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.285, 15.003 at 5 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
Gioiosa Marea ME 16 7074 7074
Patti ME 16 13431 20505
Montagnareale ME 18 1615 22120
Piraino ME 18 3962 26082
Oliveri ME 18 2181 28263
Falcone ME 20 2808 31071

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km W of Messina (238439 inhabitants)
59 Km W of Reggio di Calabria (183035 inhabitants)
76 Km N of Acireale (52622 inhabitants)
87 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 1.0 2021-10-21
00:39:01
38.2852 15.003 5 2021-10-21
00:46:34
Sala Sismica INGV-Roma 96815301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-21 00:39:01 ± 0.16
Latitude 38.2852 ± 0.0036
Longitude 15.0030 ± 0.0057
Depth (km) 5 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96815301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 470
Semi-minor axis of confidence ellipse (meter) 304
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.09263
Epicentral distance of station farthest from the epicenter (degree) 0.43617
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

Field Value
Value 1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 96815301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-21 00:46:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IFIL.HHZ. 2021-10-21T00:39:18.87 0.6 undecidable manual S 310 0.4362 50 0.38 47
IV.ECTS.HHE. 2021-10-21T00:39:18.06 1.0 undecidable manual S 167 0.4137 96 0.28 23
IV.AIO.HHE. 2021-10-21T00:39:15.35 0.6 undecidable manual S 150 0.3624 97 -0.46 46
IV.MCPD.HHZ. 2021-10-21T00:39:12.06 0.6 undecidable manual S 232 0.2698 99 -0.24 49
IV.NOV.HHE. 2021-10-21T00:39:12.62 0.6 undecidable manual S 158 0.2779 99 0.02 51
IV.MUCR.HHZ. 2021-10-21T00:39:12.52 1.0 undecidable manual S 203 0.2626 100 0.51 23
IV.IFIL.HHZ. 2021-10-21T00:39:11.36 1.0 negative manual P 310 0.4362 50 -0.06 24
IV.ECTS.HHE. 2021-10-21T00:39:11.56 1.0 undecidable manual P 167 0.4137 96 0.55 22
IV.MSFR.HHE. 2021-10-21T00:39:10.51 1.0 undecidable manual P 232 0.4092 96 -0.41 23
IV.AIO.HHE. 2021-10-21T00:39:09.86 1.0 undecidable manual P 150 0.3624 97 -0.01 25
IV.MPNC.HHZ. 2021-10-21T00:39:08.61 0.1 negative manual P 117 0.3076 98 -0.06 100
IV.NOV.HHE. 2021-10-21T00:39:08.40 1.0 undecidable manual P 158 0.2779 99 0.38 24
IV.MUCR.HHZ. 2021-10-21T00:39:07.78 0.3 undecidable manual P 203 0.2626 100 0.1 75
IV.MCPD.HHZ. 2021-10-21T00:39:07.46 1.0 undecidable manual P 232 0.2698 99 -0.38 24
IV.IVUG.HHZ. 2021-10-21T00:39:06.22 0.6 undecidable manual S 353 0.1115 112 -0.17 51
IV.IVPL.HHZ. 2021-10-21T00:39:06.11 0.6 undecidable manual S 349 0.0926 116 0.38 48
IV.IVGP.HHZ. 2021-10-21T00:39:06.17 0.6 undecidable manual S 344 0.116 111 -0.39 49
IV.MILZ.HHZ. 2021-10-21T00:39:05.92 0.3 positive manual P 94 0.1799 104 0.04 78
IV.IVGP.HHZ. 2021-10-21T00:39:04.53 0.6 undecidable manual P 344 0.116 111 0 53
IV.IVUG.HHZ. 2021-10-21T00:39:04.44 0.3 undecidable manual P 353 0.1115 112 0.01 79
IV.IVPL.HHZ. 2021-10-21T00:39:04.17 1.0 negative manual P 349 0.0926 116 0.12 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MILZ.HHN. ML:0.9 5.9978375E-5 0.06 AML other m 2021-10-21T00:39:06.07
IV.IVPL.HHE. ML:1.2 0.0002683197 0.1 AML other m 2021-10-21T00:39:07.09
IV.IVPL.HHN. ML:1.3 0.00035579545 0.14 AML other m 2021-10-21T00:39:07.51
IV.MILZ.HHE. ML:1.2 0.00012452636 0.38 AML other m 2021-10-21T00:39:12.17
IV.MPNC.HHE. ML:0.8 3.1821605E-5 0.4 AML other m 2021-10-21T00:39:10.21
IV.MCPD.HHN. ML:0.6 1.951962E-5 0.36 AML other m 2021-10-21T00:39:14.27
IV.MCPD.HHE. ML:0.6 2.035E-5 1.08 AML other m 2021-10-21T00:39:12.42
IV.MPNC.HHN. ML:1.2 6.261926E-5 0.28 AML other m 2021-10-21T00:39:14.28
IV.IFIL.HHN. ML:1.3 5.0075625E-5 0.22 AML other m 2021-10-21T00:39:23.85
IV.IFIL.HHE. ML:1.6 0.00010499216 0.24 AML other m 2021-10-21T00:39:19.38
IV.MUCR.HHE. ML:0.6 2.0879395E-5 0.24 AML other m 2021-10-21T00:39:14.94
IV.MUCR.HHN. ML:0.7 2.303871E-5 0.14 AML other m 2021-10-21T00:39:14.43
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