Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 17-04-2021 and time 03:16:34 (UTC) in region 1 km W Basicò (ME)

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

  • 17-04-2021 03:16:34 (UTC)
  • 17-04-2021 05:16:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.0620, 15.0520 at 6 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
Sant'Angelo di Brolo ME 16 3090 54348
Malvagna ME 16 733 55081
Barcellona Pozzo di Gotto ME 18 41583 96664
Sinagra ME 18 2705 99369
Santa Domenica Vittoria ME 18 980 100349
Moio Alcantara ME 18 717 101066
Gioiosa Marea ME 19 7074 108140
Francavilla di Sicilia ME 19 3945 112085
Antillo ME 20 919 113004
Piraino ME 20 3962 116966

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 2021-04-17
03:16:34		 38.0623 15.0518 6 2021-07-12
16:55:08		 Bollettino Sismico Italiano INGV 89556311
Reviewed
Rev100 		ML 1.7 2021-04-17
03:16:34		 38.0762 15.0508 5 2021-04-17
03:23:30		 Sala Sismica INGV-Roma 89166971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-17 03:16:34 ± 0.08
Latitude 38.0623 ± 0.0036
Longitude 15.0518 ± 0.0057
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89556311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 475
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 91
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.69068
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 89556311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-18 13:51:59

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 89166971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-17 03:23:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2021-04-17T03:16:50.20 0.6 undecidable manual S 61 45.621 50 0.16 47
IV.ECZM.HHN. 2021-04-17T03:16:48.33 0.3 undecidable manual S 199 38.9277 99 0.34 68
MN.CEL.HHZ. 2021-04-17T03:16:48.04 0.1 undecidable manual P 73 76.6677 50 -0.13 89
IV.IVGP.HHN. 2021-04-17T03:16:47.83 0.3 undecidable manual S 348 37.9287 99 0.19 71
IV.EMFO.HHE. 2021-04-17T03:16:47.47 0.6 undecidable manual S 175 36.4413 100 0.35 46
IV.ESVO.HHE. 2021-04-17T03:16:46.95 0.6 undecidable manual S 196 33.3444 100 0.86 38
IV.EMCN.HHN. 2021-04-17T03:16:45.45 0.6 undecidable manual S 183 30.1476 102 0.47 45
IV.EPZF.HHZ. 2021-04-17T03:16:45.64 0.6 undecidable manual S 213 31.4463 101 0.2 47
IV.ECBD.HHN. 2021-04-17T03:16:45.72 0.6 undecidable manual S 174 31.4463 101 0.29 47
IV.EPIT.HHZ. 2021-04-17T03:16:44.07 0.6 undecidable manual S 179 27.8499 102 -0.14 48
IV.MCPD.HHZ. 2021-04-17T03:16:44.12 0.6 undecidable manual S 283 28.749 102 -0.39 46
IV.EMSG.HHZ. 2021-04-17T03:16:44.14 0.6 undecidable manual S 198 28.2495 102 -0.21 48
IV.EMPL.HHZ. 2021-04-17T03:16:43.16 0.1 undecidable manual P 190 43.1235 50 0.16 94
IV.MSRU.HHZ. 2021-04-17T03:16:43.33 0.1 undecidable manual P 61 45.621 50 -0.06 95
IV.ESLN.HHZ. 2021-04-17T03:16:43.57 0.3 undecidable manual P 189 41.5251 98 0.86 57
IV.EMFS.HHE. 2021-04-17T03:16:42.89 0.3 undecidable manual P 187 38.3283 99 0.8 58
IV.IVUG.HHZ. 2021-04-17T03:16:42.31 0.3 undecidable manual P 351 37.4292 99 0.4 68
IV.ECZM.HHN. 2021-04-17T03:16:42.34 0.3 undecidable manual P 199 38.9277 99 0.13 71
IV.IVGP.HHN. 2021-04-17T03:16:42.23 0.3 undecidable manual P 348 37.9287 99 0.22 70
IV.ESPC.HHN. 2021-04-17T03:16:42.81 0.3 undecidable manual P 183 41.1255 99 0.17 70
IV.ESCV.HHN. 2021-04-17T03:16:42.87 0.3 undecidable manual P 211 40.626 99 0.32 68
IV.AIO.HHZ. 2021-04-17T03:16:41.20 0.6 undecidable manual S 123 18.7701 108 0.03 50
IV.ESVO.HHE. 2021-04-17T03:16:41.07 0.1 negative manual P 196 33.3444 100 -0.04 98
IV.ESAL.HHZ. 2021-04-17T03:16:41.61 0.1 undecidable manual P 168 34.8429 100 0.21 94
IV.EMFO.HHE. 2021-04-17T03:16:41.80 0.3 undecidable manual P 175 36.4413 100 0.09 72
IV.ECBD.HHN. 2021-04-17T03:16:40.48 0.1 positive manual P 174 31.4463 101 -0.25 94
IV.MUCR.HHZ. 2021-04-17T03:16:40.11 0.6 undecidable manual S 262 15.6732 111 -0.05 50
IV.EFIU.HHE. 2021-04-17T03:16:40.68 0.1 undecidable manual P 155 33.2445 100 -0.41 90
IV.ECTS.HHZ. 2021-04-17T03:16:40.87 0.6 undecidable manual S 163 20.868 106 -1 37
IV.EMCN.HHN. 2021-04-17T03:16:40.30 0.1 positive manual P 183 30.1476 102 -0.17 96
IV.MCPD.HHZ. 2021-04-17T03:16:40.01 0.1 undecidable manual P 283 28.749 102 -0.19 96
IV.EMSG.HHZ. 2021-04-17T03:16:39.86 0.1 undecidable manual P 198 28.2495 102 -0.24 95
IV.EPZF.HHZ. 2021-04-17T03:16:39.92 0.3 undecidable manual P 213 31.4463 101 -0.81 59
IV.EPIT.HHZ. 2021-04-17T03:16:39.79 0.1 positive manual P 179 27.8499 102 -0.24 95
IV.EMNR.HHZ. 2021-04-17T03:16:39.72 0.1 positive manual P 185 27.3504 103 -0.21 96
IV.ECTS.HHZ. 2021-04-17T03:16:38.05 0.1 undecidable manual P 163 20.868 106 -0.63 86
IV.NOV.HHZ. 2021-04-17T03:16:38.32 0.3 undecidable manual S 117 8.3805 126 0.41 71
IV.AIO.HHZ. 2021-04-17T03:16:37.92 0.1 positive manual P 123 18.7701 108 -0.35 94
IV.MUCR.HHZ. 2021-04-17T03:16:37.55 0.1 positive manual P 262 15.6732 111 -0.14 99
IV.NOV.HHZ. 2021-04-17T03:16:36.53 0.1 positive manual P 117 8.3805 126 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NOV.HHE. ML:2.1 0.0022673005 0.24 AML other m 2021-04-17T03:16:38.42
IV.NOV.HHN. ML:2.2 0.0025486705 0.4192 AML other m 2021-04-17T03:16:38.69
IV.MUCR.HHN. ML:1.6 0.00038157495 0.3008 AML other m 2021-04-17T03:16:40.41
IV.MUCR.HHE. ML:1.4 0.0002432302 0.48 AML other m 2021-04-17T03:16:40.19
IV.AIO.HHE. ML:1.5 0.0002465 0.18 AML other m 2021-04-17T03:16:41.37
IV.AIO.HHN. ML:1.5 0.0002895 0.2 AML other m 2021-04-17T03:16:41.50
IV.EPIT.HHE. ML:1.8 0.00038718965 0.3008 AML other m 2021-04-17T03:16:44.22
IV.MCPD.HHN. ML:1.2 0.00008661084999999999 0.2192 AML other m 2021-04-17T03:16:45.28
IV.EMSG.HHE. ML:1.5 0.000166606595 0.16 AML other m 2021-04-17T03:16:45.40
IV.EMSG.HHN. ML:1.7 0.00026541020000000006 0.32 AML other m 2021-04-17T03:16:45.52
IV.EPIT.HHN. ML:1.8 0.00035699690000000003 0.3408 AML other m 2021-04-17T03:16:45.59
IV.MCPD.HHE. ML:1.2 0.00008733323000000001 0.3808 AML other m 2021-04-17T03:16:45.65
IV.ESAL.HHE. ML:1.7 0.00019239395999999997 0.6208 AML other m 2021-04-17T03:16:47.54
IV.EPZF.HHE. ML:1.4 0.00012242765 0.28 AML other m 2021-04-17T03:16:47.41
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