Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 07-05-2021 and time 01:10:12 (Italy) in region 3 km SW Giarre (CT)

A magnitude ML 1.7 earthquake occured in region: 3 km SW Giarre (CT), on

  • 06-05-2021 23:10:12 (UTC)
  • 07-05-2021 01:10:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7090, 15.1700 at 19 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 3 27659 27659
Santa Venerina CT 4 8592 36251
Riposto CT 4 14838 51089
Sant'Alfio CT 5 1582 52671
Milo CT 5 1087 53758
Zafferana Etnea CT 6 9517 63275
Mascali CT 6 14282 77557
Fiumefreddo di Sicilia CT 10 9623 87180
Acireale CT 11 52622 139802
Piedimonte Etneo CT 11 3963 143765
Aci Catena CT 12 29851 173616
Aci Sant'Antonio CT 12 17984 191600
Viagrande CT 13 8563 200163
Trecastagni CT 13 10910 211073
Aci Bonaccorsi CT 13 3524 214597
Calatabiano CT 14 5308 219905
Pedara CT 14 14102 234007
Valverde CT 15 7840 241847
Linguaglossa CT 15 5403 247250
San Giovanni la Punta CT 16 23060 270310
Nicolosi CT 16 7463 277773
San Gregorio di Catania CT 17 11966 289739
Tremestieri Etneo CT 17 20589 310328
Aci Castello CT 17 18723 329051
Giardini-Naxos ME 18 9415 338466
Gaggi ME 18 3184 341650
Mascalucia CT 18 31958 373608
Sant'Agata li Battiati CT 18 9479 383087
Taormina ME 19 10960 394047
Gravina di Catania CT 19 25838 419885
Castelmola ME 19 1088 420973
San Pietro Clarenza CT 20 7743 428716
Castiglione di Sicilia CT 20 3215 431931

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km N of Acireale (52622 inhabitants)
24 Km N of Catania (314555 inhabitants)
61 Km SW of Reggio di Calabria (183035 inhabitants)
64 Km SW of Messina (238439 inhabitants)
73 Km N of Siracusa (122291 inhabitants)
95 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
23:10:12		 37.7087 15.1703 19 2021-12-29
11:12:04		 Bollettino Sismico Italiano INGV 91260811
Reviewed
Rev200 		ML 1.3 2021-05-06
23:10:12		 37.71 15.121 15 2021-10-08
11:29:45		 Sala Operativa INGV_OE (Catania) 89859211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-06 23:10:12 ± 0.07
Latitude 37.7087 ± 0.0036
Longitude 15.1703 ± 0.0057
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91260811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 388
Semi-minor axis of confidence ellipse (meter) 305
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 88
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
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) 0.03327
Epicentral distance of station farthest from the epicenter (degree) 0.74914
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 89859211
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-05-06 23:17:37

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 91260811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-14 09:10:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GALF.HHZ. 2021-05-06T23:10:29.97 0.3 undecidable manual S 270 53.0025 101 0.29 66
IV.HLNI.HHZ. 2021-05-06T23:10:28.47 0.3 undecidable manual S 213 47.8188 103 0.15 69
IV.HCRL.HHZ. 2021-05-06T23:10:28.81 0.3 undecidable manual S 194 48.7179 102 0.25 67
IV.HAVL.HHZ. 2021-05-06T23:10:27.25 0.1 undecidable manual P 183 83.1501 96 0.08 87
IV.NOV.HHZ. 2021-05-06T23:10:25.35 0.6 undecidable manual S 355 35.5422 109 0.19 46
IV.ESCV.HHZ. 2021-05-06T23:10:24.39 0.3 undecidable manual S 278 31.4463 112 0.25 69
IV.SSY.HHN. 2021-05-06T23:10:24.26 0.6 undecidable manual P 188 61.6938 99 0.37 43
IV.ESML.HNE. 2021-05-06T23:10:23.05 0.6 undecidable manual S 249 27.4503 115 -0.11 47
IV.MTTG.HHE. 2021-05-06T23:10:23.09 0.1 undecidable manual P 55 56.6988 100 -0.04 91
IV.GALF.HHZ. 2021-05-06T23:10:22.81 0.6 undecidable manual P 270 53.0025 101 0.25 45
IV.ECZM.HHN. 2021-05-06T23:10:22.42 0.6 undecidable manual S 276 23.4543 120 0.2 47
IV.MPNC.HHN. 2021-05-06T23:10:22.50 0.1 undecidable manual P 18 51.1155 102 0.22 90
IV.EMSG.HHZ. 2021-05-06T23:10:22.28 0.3 undecidable manual S 303 22.9548 121 0.17 71
IV.HCRL.HHZ. 2021-05-06T23:10:22.07 0.3 undecidable manual P 194 48.7179 102 0.15 69
IV.HAGA.HHZ. 2021-05-06T23:10:21.45 0.1 undecidable manual P 182 47.0196 103 -0.21 89
IV.ESVO.HHE. 2021-05-06T23:10:21.78 0.3 undecidable manual S 290 20.868 124 0.15 71
IV.ECTS.HHZ. 2021-05-06T23:10:21.20 0.3 undecidable manual S 347 19.7691 126 -0.17 72
IV.HLNI.HHZ. 2021-05-06T23:10:21.61 0.3 undecidable manual P 213 47.8188 103 -0.17 67
IV.MUCR.HHE. 2021-05-06T23:10:21.24 0.1 undecidable manual P 325 45.3213 104 -0.16 91
IV.EMNR.HHZ. 2021-05-06T23:10:21.20 0.3 undecidable manual S 314 17.4714 130 0.3 69
IV.ENIC.HHN. 2021-05-06T23:10:21.01 0.3 undecidable manual S 237 15.6732 134 0.47 67
IV.ESLN.HHZ. 2021-05-06T23:10:20.19 0.3 undecidable manual S 264 17.2716 131 -0.68 63
IV.EMPL.HHZ. 2021-05-06T23:10:20.46 0.3 undecidable manual S 259 17.871 129 -0.53 66
IV.EMFS.HHE. 2021-05-06T23:10:20.08 0.3 undecidable manual S 275 15.1737 135 -0.38 69
IV.EPIT.HHZ. 2021-05-06T23:10:20.83 0.3 undecidable manual S 319 15.1737 135 0.38 68
IV.EMCN.HHN. 2021-05-06T23:10:20.96 0.3 undecidable manual S 307 15.0738 135 0.52 66
IV.EVRN.HHN. 2021-05-06T23:10:19.28 0.3 undecidable manual S 235 3.6963 167 0.34 70
IV.NOV.HHZ. 2021-05-06T23:10:19.83 0.1 undecidable manual P 355 35.5422 109 -0.13 93
IV.EFIU.HHZ. 2021-05-06T23:10:19.73 0.3 undecidable manual S 21 9.6792 149 0.19 72
IV.AIO.HHE. 2021-05-06T23:10:19.12 0.1 undecidable manual P 11 29.6481 113 0 97
IV.ESCV.HHZ. 2021-05-06T23:10:19.72 0.3 undecidable manual P 278 31.4463 112 0.35 68
IV.EPZF.HHZ. 2021-05-06T23:10:19.49 0.3 undecidable manual P 295 30.3474 113 0.28 69
IV.ECBD.HHN. 2021-05-06T23:10:19.68 0.6 undecidable manual S 317 10.878 146 -0.03 50
IV.ESPC.HHN. 2021-05-06T23:10:19.52 0.3 undecidable manual S 262 12.6762 141 -0.48 68
IV.ECHR.HHE. 2021-05-06T23:10:18.13 0.1 undecidable manual P 264 22.755 121 -0.03 97
IV.EMSG.HHZ. 2021-05-06T23:10:18.32 0.1 undecidable manual P 303 22.9548 121 0.12 96
IV.ESML.HNE. 2021-05-06T23:10:18.89 0.1 undecidable manual P 249 27.4503 115 0.09 96
IV.ECZM.HHN. 2021-05-06T23:10:18.07 0.1 undecidable manual P 276 23.4543 120 -0.2 94
IV.ESAL.HHZ. 2021-05-06T23:10:18.99 0.3 undecidable manual S 329 6.0939 160 -0.13 75
IV.EMFO.HHE. 2021-05-06T23:10:18.98 0.3 undecidable manual S 293 7.6812 155 -0.31 72
IV.ECTS.HHZ. 2021-05-06T23:10:17.46 0.1 undecidable manual P 347 19.7691 126 -0.32 92
IV.EMNR.HHZ. 2021-05-06T23:10:17.64 0.1 undecidable manual P 314 17.4714 130 0.14 96
IV.ENIC.HHN. 2021-05-06T23:10:17.57 0.6 undecidable manual P 237 15.6732 134 0.28 47
IV.ESLN.HHZ. 2021-05-06T23:10:17.09 0.3 undecidable manual P 264 17.2716 131 -0.39 68
IV.EMPL.HHZ. 2021-05-06T23:10:17.29 0.1 undecidable manual P 259 17.871 129 -0.26 94
IV.EPIT.HHZ. 2021-05-06T23:10:17.34 0.1 negative manual P 319 15.1737 135 0.1 97
IV.ECNE.HHN. 2021-05-06T23:10:17.65 0.1 undecidable manual P 293 16.0728 133 0.31 93
IV.EMCN.HHN. 2021-05-06T23:10:17.24 0.3 undecidable manual P 307 15.0738 135 0.01 74
IV.ESVO.HHE. 2021-05-06T23:10:17.60 0.1 undecidable manual P 290 20.868 124 -0.32 92
IV.ESAL.HHZ. 2021-05-06T23:10:16.41 0.1 negative manual P 329 6.0939 160 -0.07 100
IV.ESPC.HHN. 2021-05-06T23:10:16.72 0.3 undecidable manual P 262 12.6762 141 -0.27 71
IV.EMFO.HHE. 2021-05-06T23:10:16.43 0.1 undecidable manual P 293 7.6812 155 -0.14 98
IV.EVRN.HHN. 2021-05-06T23:10:16.39 0.3 undecidable manual P 235 3.6963 167 0.02 75
IV.EFIU.HHZ. 2021-05-06T23:10:16.50 0.3 undecidable manual P 21 9.6792 149 -0.22 72
IV.EMFS.HHE. 2021-05-06T23:10:16.95 0.3 undecidable manual P 275 15.1737 135 -0.29 70
IV.EPOZ.HHE. 2021-05-06T23:10:16.68 0.3 undecidable manual P 159 4.3956 165 0.28 71
IV.ECBD.HHN. 2021-05-06T23:10:16.74 0.1 undecidable manual P 317 10.878 146 -0.07 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESAL.HHN. ML:1.8 0.0005535 0.22 AML other m 2021-05-06T23:10:19.49
IV.EVRN.HHN. ML:2.2 0.0014449999999999999 0.16 AML other m 2021-05-06T23:10:19.47
IV.EVRN.HNN. ML:2.4 0.0020150000000000003 0.18 AML other m 2021-05-06T23:10:19.47
IV.EVRN.HHE. ML:2.4 0.00224 0.8 AML other m 2021-05-06T23:10:19.59
IV.EVRN.HNE. ML:2.3 0.00181 1.2 AML other m 2021-05-06T23:10:19.60
IV.ESAL.HHE. ML:2.0 0.0007769999999999999 0.36 AML other m 2021-05-06T23:10:19.75
IV.EFIU.HHN. ML:1.6 0.000277 0.86 AML other m 2021-05-06T23:10:20.43
IV.EFIU.HHE. ML:1.5 0.000264 0.58 AML other m 2021-05-06T23:10:20.55
IV.EPOZ.HHN. ML:1.6 0.000361 0.2 AML other m 2021-05-06T23:10:20.76
IV.ECTS.HHE. ML:1.8 0.000345 0.58 AML other m 2021-05-06T23:10:21.49
IV.ECTS.HHN. ML:1.6 0.0002515 0.82 AML other m 2021-05-06T23:10:21.49
IV.EPOZ.HHE. ML:1.6 0.00032399999999999996 0.84 AML other m 2021-05-06T23:10:22.47
IV.EMPL.HHN. ML:2.0 0.0006185 0.16 AML other m 2021-05-06T23:10:22.57
IV.EPIT.HHN. ML:2.0 0.000773 1.62 AML other m 2021-05-06T23:10:22.07
IV.ENIC.HHE. ML:1.8 0.0004375 0.18 AML other m 2021-05-06T23:10:22.95
IV.EMSG.HHN. ML:1.7 0.000261 0.36 AML other m 2021-05-06T23:10:23.56
IV.ENIC.HHN. ML:1.8 0.000366 0.18 AML other m 2021-05-06T23:10:23.45
IV.EPIT.HHE. ML:1.9 0.000597 0.36 AML other m 2021-05-06T23:10:24.21
IV.EPZF.HHN. ML:1.6 0.0001675 0.46 AML other m 2021-05-06T23:10:26.42
IV.EMSG.HHE. ML:1.6 0.000215 0.4 AML other m 2021-05-06T23:10:26.22
IV.EMPL.HHE. ML:1.8 0.0003775 0.22 AML other m 2021-05-06T23:10:27.35
IV.EPZF.HHE. ML:1.4 0.00010994999999999999 1.46 AML other m 2021-05-06T23:10:28.90
IV.ESCV.HHE. ML:1.3 0.0000766 0.46 AML other m 2021-05-06T23:10:28.68
IV.ESCV.HHN. ML:1.5 0.00013550000000000001 0.76 AML other m 2021-05-06T23:10:29.53
IV.HLNI.HHE. ML:1.1 0.0000279 1.2 AML other m 2021-05-06T23:10:31.02
IV.GALF.HHE. ML:1.3 0.00005234999999999999 1.06 AML other m 2021-05-06T23:10:33.89
IV.HLNI.HHN. ML:1.1 0.0000339 0.5 AML other m 2021-05-06T23:10:34.31
IV.SSY.HHE. ML:1.8 0.00011284999999999999 0.52 AML other m 2021-05-06T23:10:36.23
IV.GALF.HHN. ML:1.4 0.000053349999999999996 0.84 AML other m 2021-05-06T23:10:37.41
IV.SSY.HHN. ML:2.1 0.0002245 0.5 AML other m 2021-05-06T23:10:37.47
IV.HAVL.HHN. ML:1.8 0.0000918 0.64 AML other m 2021-05-06T23:10:39.46
IV.HAVL.HHE. ML:1.8 0.0000809 0.78 AML other m 2021-05-06T23:10:40.54
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