Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 11-04-2021 and time 21:51:38 (UTC) in region 1 km W Basicò (ME)

A magnitude ML 1.6 earthquake occured in region: 1 km W Basicò (ME), on

  • 11-04-2021 21:51:38 (UTC)
  • 11-04-2021 23:51:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.0610, 15.0520 at 7 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
Basicò ME 1 612 612
Tripi ME 4 873 1485
Montalbano Elicona ME 5 2287 3772
Falcone ME 7 2808 6580
Oliveri ME 7 2181 8761
San Piero Patti ME 8 2915 11676
Mazzarrà Sant'Andrea ME 8 1531 13207
Furnari ME 8 3784 16991
Novara di Sicilia ME 9 1337 18328
Librizzi ME 9 1660 19988
Patti ME 12 13431 33419
Rodì Milici ME 12 2056 35475
Montagnareale ME 12 1615 37090
Raccuja ME 12 1041 38131
Terme Vigliatore ME 13 7395 45526
Fondachelli-Fantina ME 14 1019 46545
Castroreale ME 15 2504 49049
Roccella Valdemone ME 15 666 49715
Floresta ME 15 485 50200
Ucria ME 15 1058 51258
Malvagna ME 16 733 51991
Sant'Angelo di Brolo ME 16 3090 55081
Barcellona Pozzo di Gotto ME 18 41583 96664
Santa Domenica Vittoria ME 18 980 97644
Sinagra ME 18 2705 100349
Moio Alcantara ME 18 717 101066
Gioiosa Marea ME 19 7074 108140
Francavilla di Sicilia ME 19 3945 112085
Antillo ME 19 919 113004

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of Messina (238439 inhabitants)
51 Km N of Acireale (52622 inhabitants)
52 Km W of Reggio di Calabria (183035 inhabitants)
62 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 1.6 2021-04-11
21:51:38		 38.0608 15.0518 7 2021-07-12
16:55:14		 Bollettino Sismico Italiano INGV 90910211
Reviewed
Rev100 		ML 1.7 2021-04-11
21:51:38		 38.0523 15.0552 7 2021-04-11
21:59:26		 Sala Sismica INGV-Roma 89021901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-11 21:51:38 ± 0.06
Latitude 38.0608 ± 0.0027
Longitude 15.0518 ± 0.0034
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90910211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 328
Semi-minor axis of confidence ellipse (meter) 83
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 297
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 0.72575
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 89021901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-11 21:59:26

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 90910211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-07 21:27:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2021-04-11T21:51:52.82 0.6 undecidable manual P 191 80.5638 50 -0.15 43
MN.CEL.HHZ. 2021-04-11T21:51:52.03 0.3 undecidable manual P 73 76.6677 50 -0.34 62
IV.MILZ.HHZ. 2021-04-11T21:51:49.07 0.3 undecidable manual S 34 28.1496 104 0.46 66
IV.EPZF.HHZ. 2021-04-11T21:51:49.60 0.6 undecidable manual S 213 31.3464 102 -0.09 47
IV.EMSG.HHZ. 2021-04-11T21:51:48.86 0.3 undecidable manual S 199 28.0497 104 0.26 69
IV.MCPD.HHE. 2021-04-11T21:51:48.65 0.6 undecidable manual S 283 28.749 103 -0.18 47
IV.MPNC.HHZ. 2021-04-11T21:51:48.44 0.3 undecidable manual S 70 27.9498 104 -0.12 71
IV.EVRN.HNN. 2021-04-11T21:51:47.68 0.3 undecidable manual P 170 41.9247 50 0.68 59
IV.EMPL.HHZ. 2021-04-11T21:51:47.42 0.6 undecidable manual P 190 42.9237 50 0.25 45
IV.IVPL.HHZ. 2021-04-11T21:51:46.08 0.3 undecidable manual P 350 35.5422 101 0.25 68
IV.IVGP.HHN. 2021-04-11T21:51:46.20 0.1 undecidable manual P 348 38.1285 100 -0.13 93
IV.MSFR.HHZ. 2021-04-11T21:51:46.24 0.1 positive manual P 266 40.3263 50 -0.52 85
IV.IVUG.HHZ. 2021-04-11T21:51:46.26 0.1 undecidable manual P 351 37.629 100 0.02 95
IV.EMFO.HHE. 2021-04-11T21:51:46.19 0.3 undecidable manual P 175 36.2415 101 0.22 68
IV.EMFS.HHE. 2021-04-11T21:51:46.92 0.6 undecidable manual P 187 38.1285 100 0.58 41
IV.ESVO.HHE. 2021-04-11T21:51:45.60 0.1 undecidable manual P 196 33.2445 102 0.23 91
IV.ECTS.HHZ. 2021-04-11T21:51:45.79 0.3 undecidable manual S 163 20.7681 108 -0.36 68
IV.EFIU.HHZ. 2021-04-11T21:51:45.17 0.3 undecidable manual P 155 33.1446 102 -0.18 69
IV.ECNE.HHN. 2021-04-11T21:51:45.83 0.3 undecidable manual P 188 33.0447 102 0.49 65
IV.ESAL.HHZ. 2021-04-11T21:51:45.72 0.6 undecidable manual P 168 34.6431 101 0.06 47
IV.AIO.HHZ. 2021-04-11T21:51:45.20 0.3 undecidable manual S 122 18.6702 110 -0.28 70
IV.EMNR.HHZ. 2021-04-11T21:51:44.37 0.1 undecidable manual P 185 27.1506 104 0.18 93
IV.EPIT.HHZ. 2021-04-11T21:51:44.41 0.1 positive manual P 179 27.6501 104 0.12 95
IV.EPZF.HHZ. 2021-04-11T21:51:44.54 0.3 undecidable manual P 213 31.3464 102 -0.46 66
IV.ECBD.HHN. 2021-04-11T21:51:44.96 0.3 undecidable manual P 174 31.2465 102 -0.03 72
IV.EMCN.HHN. 2021-04-11T21:51:44.83 0.1 undecidable manual P 183 29.9478 103 0.1 95
IV.MUCR.HHZ. 2021-04-11T21:51:44.49 0.1 undecidable manual S 263 15.6732 113 -0.01 99
IV.EMSG.HHZ. 2021-04-11T21:51:44.42 0.1 positive manual P 199 28.0497 104 0.05 96
IV.MCPD.HHE. 2021-04-11T21:51:44.21 0.1 undecidable manual P 283 28.749 103 -0.29 91
IV.MPNC.HHZ. 2021-04-11T21:51:44.23 0.3 undecidable manual P 70 27.9498 104 -0.11 71
IV.MILZ.HHZ. 2021-04-11T21:51:44.65 0.1 undecidable manual P 34 28.1496 104 0.28 91
IV.MUCR.HHZ. 2021-04-11T21:51:42.02 0.1 positive manual P 263 15.6732 113 0.03 98
IV.AIO.HHZ. 2021-04-11T21:51:42.18 0.1 positive manual P 122 18.6702 110 -0.38 91
IV.NOV.HHZ. 2021-04-11T21:51:42.28 0.1 undecidable manual S 116 8.2806 129 0 100
IV.ECTS.HHZ. 2021-04-11T21:51:42.58 0.1 positive manual P 163 20.7681 108 -0.37 91
IV.NOV.HHZ. 2021-04-11T21:51:40.76 0.1 positive manual P 116 8.2806 129 0.04 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NOV.HHN. ML:2.0 0.0019096155 0.1792 AML other m 2021-04-11T21:51:42.92
IV.NOV.HHE. ML:2.0 0.001654412 0.2176 AML other m 2021-04-11T21:51:43.48
IV.MUCR.HHE. ML:1.4 0.0002284833 0.1408 AML other m 2021-04-11T21:51:45.89
IV.MUCR.HHN. ML:1.4 0.000286 0.22 AML other m 2021-04-11T21:51:45.48
IV.AIO.HHE. ML:1.5 0.000259 0.26 AML other m 2021-04-11T21:51:45.93
IV.AIO.HHN. ML:1.6 0.0003098868 0.192 AML other m 2021-04-11T21:51:45.62
IV.ECTS.HHE. ML:1.3 0.0001495705 0.3328 AML other m 2021-04-11T21:51:46.59
IV.EPIT.HHE. ML:1.8 0.00034050000000000004 0.18 AML other m 2021-04-11T21:51:49.11
IV.EMSG.HHE. ML:1.9 0.00042186645 0.2816 AML other m 2021-04-11T21:51:49.22
IV.ECTS.HHN. ML:1.4 0.00021510685000000003 0.2688 AML other m 2021-04-11T21:51:47.69
IV.MPNC.HHN. ML:1.5 0.00015483005 0.192 AML other m 2021-04-11T21:51:50.92
IV.MPNC.HHE. ML:1.3 0.00011785904999999999 0.1664 AML other m 2021-04-11T21:51:50.98
IV.EMSG.HHN. ML:1.8 0.00038462929999999993 0.3712 AML other m 2021-04-11T21:51:52.61
IV.EPZF.HHN. ML:0.0 0.00030349740000000004 0.32 AML other m 2021-04-11T21:51:52.76
IV.EPZF.HHE. ML:0.0 0.00015209155000000003 0.384 AML other m 2021-04-11T21:51:54.14
IV.ESAL.HHN. ML:1.6 0.000179 1.36 AML other m 2021-04-11T21:51:55.01
IV.ESAL.HHE. ML:1.9 0.000345 0.74 AML other m 2021-04-11T21:51:59.89
IV.MILZ.HHE. ML:1.9 0.00043445635 0.3584 AML other m 2021-04-11T21:51:49.96
IV.MILZ.HHN. ML:1.7 0.00029045325 0.5376 AML other m 2021-04-11T21:51:49.93
IV.EFIU.HHN. ML:1.4 0.00011321968000000001 0.6144 AML other m 2021-04-11T21:51:51.09
IV.IVPL.HHE. ML:1.7 0.00019589470999999996 0.384 AML other m 2021-04-11T21:51:56.12
IV.IVPL.HHN. ML:1.6 0.00017115335000000002 0.2816 AML other m 2021-04-11T21:51:54.84
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