Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 28-06-2021 and time 08:38:01 (Italy) in region 7 km NE Ragalna (CT)

A magnitude ML 1.5 earthquake occured in region: 7 km NE Ragalna (CT), on

  • 28-06-2021 06:38:01 (UTC)
  • 28-06-2021 08:38:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6860, 14.9730 at 14 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
Ragalna CT 7 3924 3924
Nicolosi CT 9 7463 11387
Biancavilla CT 10 24007 35394
Belpasso CT 11 28108 63502
Santa Maria di Licodia CT 11 7641 71143
Pedara CT 11 14102 85245
Zafferana Etnea CT 12 9517 94762
Trecastagni CT 12 10910 105672
Adrano CT 13 36122 141794
Milo CT 13 1087 142881
San Pietro Clarenza CT 13 7743 150624
Camporotondo Etneo CT 13 5023 155647
Paternò CT 14 48228 203875
Viagrande CT 14 8563 212438
Mascalucia CT 14 31958 244396
Santa Venerina CT 15 8592 252988
Tremestieri Etneo CT 15 20589 273577
Aci Bonaccorsi CT 15 3524 277101
Gravina di Catania CT 16 25838 302939
Aci Sant'Antonio CT 16 17984 320923
San Giovanni la Punta CT 16 23060 343983
Sant'Alfio CT 16 1582 345565
Bronte CT 17 19172 364737
Sant'Agata li Battiati CT 17 9479 374216
Aci Catena CT 18 29851 404067
Valverde CT 18 7840 411907
San Gregorio di Catania CT 18 11966 423873
Maletto CT 19 3920 427793
Misterbianco CT 19 49410 477203
Acireale CT 19 52622 529825
Giarre CT 19 27659 557484
Motta Sant'Anastasia CT 19 12116 569600

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km W of Acireale (52622 inhabitants)
23 Km NW of Catania (314555 inhabitants)
75 Km NW of Siracusa (122291 inhabitants)
75 Km SW of Reggio di Calabria (183035 inhabitants)
76 Km SW of Messina (238439 inhabitants)
83 Km E of Caltanissetta (63360 inhabitants)
87 Km N of Ragusa (73313 inhabitants)
91 Km NE of Vittoria (63339 inhabitants)
94 Km N of Modica (54633 inhabitants)
94 Km NE of Gela (75827 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 1.5 2021-06-28
06:38:01		 37.6865 14.9732 14 2021-12-29
11:12:22		 Bollettino Sismico Italiano INGV 94623881
Reviewed
Rev200 		ML 1.1 2021-06-28
06:38:02		 37.731 14.99 6 2021-09-14
14:08:59		 Sala Operativa INGV_OE (Catania) 91991601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-28 06:38:01 ± 0.1
Latitude 37.6865 ± 0.0045
Longitude 14.9732 ± 0.0080
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 94623881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 615
Semi-minor axis of confidence ellipse (meter) 293
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53420
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 94623881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-25 13:33:08

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 91991601
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-06-28 07:12:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2021-06-28T06:38:20.87 0.3 undecidable manual S 171 59.2962 94 0.74 56
IV.HLNI.HHZ. 2021-06-28T06:38:15.06 0.3 undecidable manual S 193 38.5281 97 0.45 64
IV.MUCR.HHZ. 2021-06-28T06:38:15.87 0.3 undecidable manual S 348 40.5261 97 0.74 56
IV.GALF.HHZ. 2021-06-28T06:38:14.54 1.0 undecidable manual S 274 35.742 98 0.66 20
IV.SSY.HHZ. 2021-06-28T06:38:12.17 0.3 undecidable manual P 171 59.2962 94 -0.22 65
IV.EPIT.HHZ. 2021-06-28T06:38:09.38 0.1 undecidable manual S 28 15.6732 119 0.65 82
IV.EPZF.HHZ. 2021-06-28T06:38:09.31 0.6 undecidable manual S 326 18.3705 114 -0.06 48
IV.MUCR.HHZ. 2021-06-28T06:38:09.52 0.3 undecidable manual P 348 40.5261 97 0.02 69
IV.GALF.HHZ. 2021-06-28T06:38:08.78 0.3 undecidable manual P 274 35.742 98 0 71
IV.EMCN.HHN. 2021-06-28T06:38:08.04 0.6 undecidable manual S 25 12.7761 127 -0.04 49
IV.ESCV.HHZ. 2021-06-28T06:38:08.81 0.3 undecidable manual S 296 15.3735 120 0.15 71
IV.HLNI.HHZ. 2021-06-28T06:38:08.90 0.3 undecidable manual P 193 38.5281 97 -0.3 66
IV.EMSG.HHZ. 2021-06-28T06:38:08.63 0.1 undecidable manual S 352 15.0738 121 0.05 97
IV.EMFO.HHE. 2021-06-28T06:38:07.78 0.3 undecidable manual S 62 11.6772 131 -0.07 73
IV.ECZM.HHN. 2021-06-28T06:38:07.45 0.3 undecidable manual S 309 7.7811 144 0.29 70
IV.EMFS.HHE. 2021-06-28T06:38:06.98 0.1 undecidable manual S 31 4.2957 160 0.27 95
IV.EMPL.HHZ. 2021-06-28T06:38:06.09 0.3 undecidable manual S 196 0.8991 176 -0.43 68
IV.ECHR.HHE. 2021-06-28T06:38:06.80 0.3 undecidable manual S 270 5.2947 155 -0.01 74
IV.ESLN.HHZ. 2021-06-28T06:38:06.66 0.3 undecidable manual S 9 0.7992 176 0.14 74
IV.ESCV.HHZ. 2021-06-28T06:38:05.28 0.1 undecidable manual P 296 15.3735 120 -0.49 88
IV.EPZF.HHZ. 2021-06-28T06:38:05.95 0.1 undecidable manual P 326 18.3705 114 -0.22 93
IV.EMNR.HHZ. 2021-06-28T06:38:05.61 0.1 undecidable manual P 18 15.1737 121 -0.13 96
IV.EMSG.HHZ. 2021-06-28T06:38:05.68 0.1 undecidable manual P 352 15.0738 121 -0.04 97
IV.ESVO.HHE. 2021-06-28T06:38:05.06 0.1 undecidable manual P 347 9.879 137 -0.04 98
IV.EPIT.HHZ. 2021-06-28T06:38:05.77 0.3 positive manual P 28 15.6732 119 -0.04 73
IV.ESML.HHZ. 2021-06-28T06:38:05.69 3.0 positive manual P 1.04 0
IV.ECBD.HHN. 2021-06-28T06:38:05.67 0.3 undecidable manual P 44 14.3745 123 0.03 73
IV.EMCN.HHN. 2021-06-28T06:38:05.13 0.3 undecidable manual P 25 12.7761 127 -0.3 69
IV.ECZM.HHN. 2021-06-28T06:38:04.74 0.1 undecidable manual P 309 7.7811 144 -0.16 96
IV.ESLN.HHZ. 2021-06-28T06:38:04.44 0.3 undecidable manual P 9 0.7992 176 -0.09 74
IV.EMFS.HHE. 2021-06-28T06:38:04.47 0.1 undecidable manual P 31 4.2957 160 -0.17 96
IV.EMPL.HHZ. 2021-06-28T06:38:04.54 0.1 undecidable manual P 196 0.8991 176 0.01 100
IV.EMFO.HHE. 2021-06-28T06:38:04.87 0.1 undecidable manual P 62 11.6772 131 -0.43 90
IV.ECHR.HHE. 2021-06-28T06:38:04.74 0.3 undecidable manual P 270 5.2947 155 0.04 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHN. ML:1.9 0.0007109999999999999 0.26 AML other m 2021-06-28T06:38:09.47
IV.ESML.HNN. ML:1.4 0.00023187775 0.5184 AML other m 2021-06-28T06:38:15.31
IV.EMPL.HHE. ML:2.0 0.001325 0.18 AML other m 2021-06-28T06:38:10.28
IV.ESML.HHN. ML:1.3 0.00020711550000000002 0.5216 AML other m 2021-06-28T06:38:15.57
IV.EMPL.HHN. ML:2.1 0.00174 0.18 AML other m 2021-06-28T06:38:10.56
IV.EPZF.HHN. ML:1.4 0.00017449999999999999 0.3 AML other m 2021-06-28T06:38:10.54
IV.EPZF.HHE. ML:1.4 0.00016 0.32 AML other m 2021-06-28T06:38:12.45
IV.ESML.HHE. ML:1.5 0.000306203 0.2176 AML other m 2021-06-28T06:38:13.00
IV.ESML.HNE. ML:1.5 0.00029420705 0.2592 AML other m 2021-06-28T06:38:14.01
IV.HLNI.HHE. ML:1.1 0.000040332435 0.0992 AML other m 2021-06-28T06:38:15.24
IV.HLNI.HHN. ML:1.1 0.000039875155 0.1024 AML other m 2021-06-28T06:38:15.92
IV.EMSG.HHE. ML:1.6 0.0002891469 0.24 AML other m 2021-06-28T06:38:16.44
IV.MUCR.HHN. ML:1.2 0.0000564 0.42 AML other m 2021-06-28T06:38:17.07
IV.MUCR.HHE. ML:1.1 0.00003915 1.46 AML other m 2021-06-28T06:38:17.07
IV.SSY.HHN. ML:2.2 0.000306 0.1 AML other m 2021-06-28T06:38:23.81
IV.SSY.HHE. ML:1.7 0.00010732330000000001 0.1184 AML other m 2021-06-28T06:38:22.74
IV.ESCV.HHN. ML:1.8 0.0004464891 0.2624 AML other m 2021-06-28T06:38:11.38
IV.ESCV.HHE. ML:1.7 0.00036164235 0.2016 AML other m 2021-06-28T06:38:08.95
IV.EPIT.HHE. ML:1.6 0.0003076483 0.32 AML other m 2021-06-28T06:38:14.56
IV.EPIT.HHN. ML:1.7 0.00039406605 0.2592 AML other m 2021-06-28T06:38:14.39
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