Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 06-05-2021 and time 19:27:38 (Italy) in region 2 km W Giarre (CT)

A magnitude ML 1.7 earthquake occured in region: 2 km W Giarre (CT), on

  • 06-05-2021 17:27:38 (UTC)
  • 06-05-2021 19:27:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7220, 15.1600 at 18 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
Giarre CT 2 27659 27659
Sant'Alfio CT 3 1582 29241
Milo CT 4 1087 30328
Riposto CT 4 14838 45166
Santa Venerina CT 4 8592 53758
Mascali CT 5 14282 68040
Zafferana Etnea CT 6 9517 77557
Fiumefreddo di Sicilia CT 9 9623 87180
Piedimonte Etneo CT 10 3963 91143
Acireale CT 12 52622 143765
Calatabiano CT 13 5308 149073
Aci Sant'Antonio CT 13 17984 167057
Aci Catena CT 13 29851 196908
Linguaglossa CT 13 5403 202311
Trecastagni CT 14 10910 213221
Viagrande CT 14 8563 221784
Aci Bonaccorsi CT 14 3524 225308
Pedara CT 15 14102 239410
Valverde CT 16 7840 247250
Gaggi ME 17 3184 250434
Nicolosi CT 17 7463 257897
Giardini-Naxos ME 17 9415 267312
San Giovanni la Punta CT 17 23060 290372
San Gregorio di Catania CT 18 11966 302338
Tremestieri Etneo CT 18 20589 322927
Taormina ME 18 10960 333887
Castiglione di Sicilia CT 18 3215 337102
Aci Castello CT 18 18723 355825
Castelmola ME 18 1088 356913
Mascalucia CT 19 31958 388871
Sant'Agata li Battiati CT 19 9479 398350
Motta Camastra ME 20 845 399195
Graniti ME 20 1492 400687
Gravina di Catania CT 20 25838 426525

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Acireale (52622 inhabitants)
25 Km N of Catania (314555 inhabitants)
61 Km SW of Reggio di Calabria (183035 inhabitants)
63 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
96 Km NE of Ragusa (73313 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 1.7 2021-05-06
17:27:38		 37.722 15.1603 18 2021-12-29
11:12:04		 Bollettino Sismico Italiano INGV 91083321
Reviewed
Rev200 		ML 1.4 2021-05-06
17:27:37		 37.713 15.135 17 2021-10-08
11:22:50		 Sala Operativa INGV_OE (Catania) 89846141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-06 17:27:38 ± 0.08
Latitude 37.7220 ± 0.0036
Longitude 15.1603 ± 0.0057
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91083321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 367
Semi-minor axis of confidence ellipse (meter) 351
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.76262
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 91083321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-11 09:32:25

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 89846141
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-05-06 17:36:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-05-06T17:28:03.55 0.3 undecidable manual S 182 84.6486 95 0.41 61
IV.HCRL.HHN. 2021-05-06T17:27:54.26 0.6 undecidable manual S 193 50.0166 100 0.31 44
IV.HAVL.HHZ. 2021-05-06T17:27:52.45 0.1 undecidable manual P 182 84.6486 95 -0.07 87
IV.NOV.HHZ. 2021-05-06T17:27:49.97 0.6 undecidable manual S 357 33.9438 106 0.17 46
IV.SSY.HHN. 2021-05-06T17:27:49.62 0.3 undecidable manual P 187 63.0924 97 0.41 63
IV.EPZF.HHZ. 2021-05-06T17:27:48.79 0.3 undecidable manual S 293 28.8489 110 0.28 70
IV.MPNC.HHN. 2021-05-06T17:27:47.46 0.1 undecidable manual P 20 50.0166 100 0.24 88
IV.EMSG.HHZ. 2021-05-06T17:27:47.03 0.6 undecidable manual S 301 21.4674 119 0.33 46
IV.HCRL.HHN. 2021-05-06T17:27:47.07 0.1 undecidable manual P 193 50.0166 100 -0.15 91
IV.HLNI.HHZ. 2021-05-06T17:27:46.58 0.1 undecidable manual P 212 48.618 100 -0.43 85
IV.ESVO.HHE. 2021-05-06T17:27:46.45 0.6 undecidable manual S 287 19.5693 123 0.18 48
IV.MUCR.HHE. 2021-05-06T17:27:46.00 0.1 undecidable manual P 325 43.5231 102 -0.25 90
IV.EMPL.HHZ. 2021-05-06T17:27:45.41 0.3 undecidable manual S 254 17.3715 127 -0.37 68
IV.EMCN.HHN. 2021-05-06T17:27:45.15 0.3 undecidable manual S 305 13.4754 135 0.14 73
IV.EPIT.HHZ. 2021-05-06T17:27:45.09 0.3 undecidable manual S 318 13.4754 135 0.1 73
IV.ENIC.HHE. 2021-05-06T17:27:45.92 0.3 undecidable manual S 230 15.7731 130 0.47 68
IV.EMNR.HHZ. 2021-05-06T17:27:45.77 0.3 undecidable manual S 312 15.7731 130 0.32 70
IV.ESLN.HHZ. 2021-05-06T17:27:45.15 0.3 undecidable manual S 259 16.5723 128 -0.48 67
IV.ECTS.HHZ. 2021-05-06T17:27:45.97 0.6 undecidable manual S 349 18.0708 125 0.03 49
IV.ECBD.HHN. 2021-05-06T17:27:44.17 0.6 undecidable manual S 315 9.1797 148 -0.1 50
IV.EPZF.HHZ. 2021-05-06T17:27:44.40 0.6 undecidable manual P 293 28.8489 110 0.33 46
IV.ESPC.HHN. 2021-05-06T17:27:44.46 0.3 undecidable manual S 254 12.0768 139 -0.29 70
IV.NOV.HHZ. 2021-05-06T17:27:44.86 0.1 undecidable manual P 357 33.9438 106 0.04 95
IV.EMFO.HHE. 2021-05-06T17:27:44.32 0.3 undecidable manual S 284 6.2937 157 0.4 69
IV.EVRN.HHN. 2021-05-06T17:27:44.06 0.3 undecidable manual S 211 4.1958 164 0.32 71
IV.EMFS.HHE. 2021-05-06T17:27:44.94 0.3 undecidable manual S 269 14.2746 133 -0.21 71
IV.EMSG.HHZ. 2021-05-06T17:27:43.14 0.1 undecidable manual P 301 21.4674 119 0.11 97
IV.AIO.HHZ. 2021-05-06T17:27:43.93 0.3 undecidable manual P 13 28.3494 111 -0.06 73
IV.ECZM.HHN. 2021-05-06T17:27:43.30 0.1 undecidable manual P 273 22.4553 118 0.13 96
IV.EPOZ.HHZ. 2021-05-06T17:27:43.99 0.3 undecidable manual S 156 6.0939 157 0.09 74
IV.EFIU.HHN. 2021-05-06T17:27:43.88 0.3 undecidable manual S 30 8.6802 149 -0.33 72
IV.ESAL.HHN. 2021-05-06T17:27:43.55 0.3 undecidable manual S 328 4.2957 164 -0.19 74
IV.ESVO.HHE. 2021-05-06T17:27:43.04 0.3 undecidable manual P 287 19.5693 123 0.26 70
IV.ESLN.HHZ. 2021-05-06T17:27:42.02 0.6 undecidable manual P 259 16.5723 128 -0.39 46
IV.ECTS.HHZ. 2021-05-06T17:27:42.29 0.1 undecidable manual P 349 18.0708 125 -0.3 94
IV.ECHR.HHE. 2021-05-06T17:27:42.89 0.1 undecidable manual P 260 22.0668 118 -0.22 94
IV.EMPL.HHZ. 2021-05-06T17:27:42.18 0.1 undecidable manual P 254 17.3715 127 -0.32 93
IV.EMCN.HHN. 2021-05-06T17:27:42.18 0.3 undecidable manual P 305 13.4754 135 0.13 73
IV.EPIT.HHZ. 2021-05-06T17:27:42.15 0.1 undecidable manual P 318 13.4754 135 0.11 98
IV.ENIC.HHE. 2021-05-06T17:27:42.51 0.1 undecidable manual P 230 15.7731 130 0.2 96
IV.EMNR.HHZ. 2021-05-06T17:27:42.55 0.3 undecidable manual P 312 15.7731 130 0.24 71
IV.ESAL.HHN. 2021-05-06T17:27:41.29 0.3 undecidable manual P 328 4.2957 164 -0.03 76
IV.EMFO.HHE. 2021-05-06T17:27:41.35 0.1 undecidable manual P 284 6.2937 157 -0.07 100
IV.EVRN.HHN. 2021-05-06T17:27:41.44 0.3 undecidable manual P 211 4.1958 164 0.12 74
IV.EMFS.HHE. 2021-05-06T17:27:41.86 0.1 undecidable manual P 269 14.2746 133 -0.27 94
IV.ECBD.HHN. 2021-05-06T17:27:41.58 0.1 undecidable manual P 315 9.1797 148 -0.05 100
IV.EPOZ.HHZ. 2021-05-06T17:27:41.57 0.3 undecidable manual P 156 6.0939 157 0.16 73
IV.EFIU.HHN. 2021-05-06T17:27:41.29 0.1 undecidable manual P 30 8.6802 149 -0.3 96
IV.ESPC.HHN. 2021-05-06T17:27:41.64 0.1 undecidable manual P 254 12.0768 139 -0.26 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESAL.HHN. ML:1.7 0.0005155000000000001 0.16 AML other m 2021-05-06T17:27:44.37
IV.ESAL.HHE. ML:1.9 0.000771 0.38 AML other m 2021-05-06T17:27:44.66
IV.EFIU.HHN. ML:1.4 0.000208 1.14 AML other m 2021-05-06T17:27:45.34
IV.EFIU.HHE. ML:1.4 0.0002405 0.62 AML other m 2021-05-06T17:27:45.43
IV.EMPL.HHE. ML:1.8 0.000366 0.18 AML other m 2021-05-06T17:27:47.24
IV.EMPL.HHN. ML:1.9 0.0005520000000000001 0.16 AML other m 2021-05-06T17:27:47.51
IV.EPIT.HHN. ML:1.9 0.0005935 0.38 AML other m 2021-05-06T17:27:47.78
IV.EPIT.HHE. ML:1.8 0.0005085 1.04 AML other m 2021-05-06T17:27:48.94
IV.EMSG.HHN. ML:1.6 0.000229 0.42 AML other m 2021-05-06T17:27:50.72
IV.EMSG.HHE. ML:1.6 0.000199 1.72 AML other m 2021-05-06T17:27:53.98
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