Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 03-08-2021 and time 18:05:42 (Italy) in region 4 km SE Randazzo (CT)

A magnitude ML 2.2 earthquake occured in region: 4 km SE Randazzo (CT), on

  • 03-08-2021 16:05:42 (UTC)
  • 03-08-2021 18:05:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8580, 14.9880 at 25 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
Randazzo CT 4 10900 10900
Santa Domenica Vittoria ME 7 980 11880
Moio Alcantara ME 7 717 12597
Roccella Valdemone ME 9 666 13263
Malvagna ME 9 733 13996
Maletto CT 11 3920 17916
Castiglione di Sicilia CT 12 3215 21131
Linguaglossa CT 14 5403 26534
Francavilla di Sicilia ME 14 3945 30479
Bronte CT 16 19172 49651
Maniace CT 16 3765 53416
Floresta ME 16 485 53901
Motta Camastra ME 17 845 54746
Piedimonte Etneo CT 18 3963 58709
Sant'Alfio CT 19 1582 60291
Milo CT 19 1087 61378
Montalbano Elicona ME 19 2287 63665

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Acireale (52622 inhabitants)
40 Km N of Catania (314555 inhabitants)
62 Km SW of Messina (238439 inhabitants)
64 Km W of Reggio di Calabria (183035 inhabitants)
91 Km E of Caltanissetta (63360 inhabitants)
93 Km N of Siracusa (122291 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 2.2 2021-08-03
16:05:42		 37.858 14.9878 25 2021-12-29
11:12:53		 Bollettino Sismico Italiano INGV 98467051
Reviewed
Rev200 		ML 2.0 2021-08-03
16:05:41		 37.864 14.948 26 2021-12-13
15:01:38		 Sala Operativa INGV_OE (Catania) 93622811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-03 16:05:42 ± 0.09
Latitude 37.8580 ± 0.0036
Longitude 14.9878 ± 0.0068
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 98467051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 597
Semi-minor axis of confidence ellipse (meter) 82
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 110
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 50
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) 0.04766
Epicentral distance of station farthest from the epicenter (degree) 0.91281
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 98467051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-13 14:53:52

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 93622811
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-08-03 16:12:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-08-03T16:06:11.31 0.6 undecidable manual S 173 100.3218 99 -0.39 40
IV.HMDC.HHZ. 2021-08-03T16:06:11.66 0.6 undecidable manual S 190 101.3208 99 -0.3 41
IV.RAFF.HHZ. 2021-08-03T16:06:10.65 0.6 undecidable manual S 218 89.4438 101 1.83 19
IV.HSRS.HHZ. 2021-08-03T16:06:08.26 0.6 undecidable manual S 166 87.3459 101 -0.02 44
IV.HVZN.HHZ. 2021-08-03T16:06:06.31 0.6 undecidable manual S 198 79.0653 102 0.18 43
IV.SSY.HHZ. 2021-08-03T16:06:05.91 0.6 undecidable manual S 174 78.0663 102 0.06 45
IV.MSRU.HHZ. 2021-08-03T16:06:03.28 0.6 undecidable manual S 45 63.9915 105 1.08 34
IV.HAGA.HHZ. 2021-08-03T16:06:02.55 0.3 undecidable manual S 167 65.2902 105 0.03 69
IV.HCRL.HHZ. 2021-08-03T16:06:01.98 0.6 undecidable manual S 176 63.8916 105 -0.2 44
IV.MILZ.HHN. 2021-08-03T16:05:59.20 0.6 undecidable manual S 25 50.5161 110 0.42 44
IV.SOI.EHZ. 2021-08-03T16:05:59.14 0.3 undecidable manual P 75 96.2259 100 0.55 59
IV.HMDC.HHZ. 2021-08-03T16:05:59.30 0.3 undecidable manual P 190 101.3208 99 -0.06 64
IV.HAVL.HHZ. 2021-08-03T16:05:58.52 0.3 undecidable manual P 173 100.3218 99 -0.69 54
IV.RAFF.HHZ. 2021-08-03T16:05:57.54 0.1 undecidable manual P 218 89.4438 101 -0.01 88
IV.MPNC.HHZ. 2021-08-03T16:05:57.57 0.6 undecidable manual S 45 45.2214 113 0.12 47
IV.IACL.HHZ. 2021-08-03T16:05:57.19 1.0 undecidable manual P 324 93.0402 100 -0.9 17
IV.PLLN.EHZ. 2021-08-03T16:05:56.27 0.3 undecidable manual P 282 75.369 103 0.83 53
IV.HVZN.HHZ. 2021-08-03T16:05:56.53 0.3 undecidable manual P 198 79.0653 102 0.54 60
IV.HSRS.HHZ. 2021-08-03T16:05:56.71 0.3 undecidable manual P 166 87.3459 101 -0.53 59
IV.SSY.HHZ. 2021-08-03T16:05:55.37 0.6 undecidable manual P 174 78.0663 102 -0.46 41
IV.MSFR.HHZ. 2021-08-03T16:05:55.96 0.6 undecidable manual S 300 39.7269 116 -0.17 48
IV.MCPD.HHZ. 2021-08-03T16:05:54.82 0.6 undecidable manual S 322 36.741 118 -0.59 44
IV.HCRL.HHZ. 2021-08-03T16:05:53.23 0.3 undecidable manual P 176 63.8916 105 -0.48 63
IV.HAGA.HHZ. 2021-08-03T16:05:53.50 0.3 undecidable manual P 167 65.2902 105 -0.41 63
IV.MSRU.HHZ. 2021-08-03T16:05:53.92 0.3 undecidable manual P 45 63.9915 105 0.19 68
IV.AIO.HHZ. 2021-08-03T16:05:52.51 0.6 undecidable manual S 60 24.8529 130 -0.27 47
IV.IVPL.HHZ. 2021-08-03T16:05:52.85 0.3 undecidable manual P 359 57.498 107 0.08 69
IV.IVUG.HHZ. 2021-08-03T16:05:52.97 0.3 undecidable manual P 360 59.6958 107 -0.12 68
IV.ESAL.HHZ. 2021-08-03T16:05:52.45 0.6 undecidable manual S 132 17.1717 142 1.1 35
IV.NOV.HHZ. 2021-08-03T16:05:52.31 0.6 undecidable manual S 35 22.8549 133 -0.08 49
IV.MILZ.HHN. 2021-08-03T16:05:51.74 0.3 undecidable manual P 25 50.5161 110 -0.01 71
IV.ESCV.HHZ. 2021-08-03T16:05:51.85 0.6 undecidable manual S 231 19.4694 138 0.1 48
IV.MPNC.HHZ. 2021-08-03T16:05:51.07 0.3 undecidable manual P 45 45.2214 113 0.09 71
IV.EPZF.HHZ. 2021-08-03T16:05:50.82 0.6 undecidable manual S 252 12.0768 152 0.22 48
IV.MSFR.HHZ. 2021-08-03T16:05:50.05 0.1 undecidable manual P 300 39.7269 116 -0.17 95
IV.EPIT.HHZ. 2021-08-03T16:05:50.62 0.6 undecidable manual S 131 7.9809 161 0.47 46
IV.GALF.HHZ. 2021-08-03T16:05:50.72 0.3 undecidable manual P 246 40.4262 116 0.41 66
IV.ECTS.HHZ. 2021-08-03T16:05:50.47 0.6 undecidable manual S 77 11.9769 152 -0.12 50
IV.MCPD.HHZ. 2021-08-03T16:05:49.43 0.1 undecidable manual P 322 36.741 118 -0.37 91
IV.EMSG.HHZ. 2021-08-03T16:05:49.34 0.6 undecidable manual S 219 5.2947 167 -0.61 46
IV.EVRN.HHZ. 2021-08-03T16:05:48.11 0.3 undecidable manual P 145 22.755 133 0.06 74
IV.EMPL.HHZ. 2021-08-03T16:05:48.01 0.3 undecidable manual P 184 19.869 137 0.28 71
IV.AIO.HHZ. 2021-08-03T16:05:48.24 0.1 positive manual P 60 24.8529 130 -0.05 98
IV.ESAL.HHZ. 2021-08-03T16:05:47.72 0.1 negative manual P 132 17.1717 142 0.26 96
IV.NOV.HHZ. 2021-08-03T16:05:47.84 0.1 positive manual P 35 22.8549 133 -0.22 95
IV.ESCV.HHZ. 2021-08-03T16:05:47.96 0.3 undecidable manual P 231 19.4694 138 0.27 71
IV.ECTS.HHZ. 2021-08-03T16:05:46.73 0.1 undecidable manual P 77 11.9769 152 -0.29 96
IV.EMSG.HHZ. 2021-08-03T16:05:46.48 0.1 undecidable manual P 219 5.2947 167 -0.17 100
IV.EPZF.HHZ. 2021-08-03T16:05:46.79 0.1 undecidable manual P 252 12.0768 152 -0.24 98
IV.EPIT.HHZ. 2021-08-03T16:05:46.98 0.1 negative manual P 131 7.9809 161 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHE. ML:2.4 0.001465 0.44 AML other m 2021-08-03T16:05:51.46
IV.EPZF.HHN. ML:2.2 0.000973 1.2 AML other m 2021-08-03T16:05:51.83
IV.EPZF.HHE. ML:2.1 0.000745 1.2 AML other m 2021-08-03T16:05:51.31
IV.EMSG.HHN. ML:2.4 0.00141 0.5 AML other m 2021-08-03T16:05:52.62
IV.EPIT.HHE. ML:2.5 0.0021100000000000003 0.48 AML other m 2021-08-03T16:05:52.65
IV.NOV.HHN. ML:2.6 0.0017999999999999997 0.16 AML other m 2021-08-03T16:05:52.74
IV.NOV.HHE. ML:2.7 0.00212 0.4 AML other m 2021-08-03T16:05:53.07
IV.AIO.HHE. ML:1.9 0.00036050000000000003 0.44 AML other m 2021-08-03T16:05:53.51
IV.EPIT.HHN. ML:2.5 0.001755 0.3 AML other m 2021-08-03T16:05:53.77
IV.AIO.HHN. ML:2.0 0.0004215 0.52 AML other m 2021-08-03T16:05:53.78
IV.ESAL.HHN. ML:2.2 0.000824 1.36 AML other m 2021-08-03T16:05:54.19
IV.ESCV.HHE. ML:2.2 0.0007815 1.42 AML other m 2021-08-03T16:05:55.97
IV.EVRN.HHE. ML:2.3 0.000887 1.74 AML other m 2021-08-03T16:05:55.10
IV.ESAL.HHE. ML:2.4 0.0013250000000000002 0.42 AML other m 2021-08-03T16:05:55.99
IV.ESCV.HHN. ML:2.2 0.0007765 1.3 AML other m 2021-08-03T16:05:56.23
IV.MCPD.HHE. ML:1.5 0.00010164999999999999 0.38 AML other m 2021-08-03T16:05:56.39
IV.MCPD.HHN. ML:1.6 0.0001295 0.5 AML other m 2021-08-03T16:05:56.67
IV.EMPL.HHN. ML:2.4 0.0011600000000000002 0.8 AML other m 2021-08-03T16:05:57.45
IV.EVRN.HNN. ML:2.3 0.0008755 0.18 AML other m 2021-08-03T16:05:57.45
IV.EVRN.HHN. ML:2.2 0.00079 0.2 AML other m 2021-08-03T16:05:57.46
IV.EVRN.HNE. ML:2.2 0.0006525000000000001 0.58 AML other m 2021-08-03T16:06:00.00
IV.MPNC.HHE. ML:2.3 0.0004755 0.56 AML other m 2021-08-03T16:06:00.01
IV.GALF.HHE. ML:2.2 0.0005380000000000001 0.5 AML other m 2021-08-03T16:06:00.37
IV.MPNC.HHN. ML:2.0 0.000286 0.56 AML other m 2021-08-03T16:06:00.39
IV.EMPL.HHE. ML:2.3 0.0009170000000000001 0.94 AML other m 2021-08-03T16:06:00.99
IV.GALF.HHN. ML:2.2 0.00040449999999999997 1.6 AML other m 2021-08-03T16:06:01.10
IV.IVPL.HHN. ML:2.1 0.00023549999999999998 0.38 AML other m 2021-08-03T16:06:02.19
IV.HCRL.HHE. ML:2.0 0.00019600000000000002 1 AML other m 2021-08-03T16:06:02.35
IV.HCRL.HHN. ML:2.0 0.0001905 0.88 AML other m 2021-08-03T16:06:02.42
IV.IVPL.HHE. ML:2.1 0.000263 1.66 AML other m 2021-08-03T16:06:03.05
IV.HSRS.HHN. ML:1.9 0.00010095000000000001 1.56 AML other m 2021-08-03T16:06:03.87
IV.MSRU.HHN. ML:2.2 0.0002585 0.36 AML other m 2021-08-03T16:06:05.28
IV.MSRU.HHE. ML:2.1 0.0002265 0.42 AML other m 2021-08-03T16:06:05.35
IV.SSY.HHE. ML:2.5 0.000467 1.36 AML other m 2021-08-03T16:06:06.10
IV.HVZN.HHE. ML:2.4 0.0003185 1.6 AML other m 2021-08-03T16:06:09.07
IV.HSRS.HHE. ML:2.1 0.000135 0.42 AML other m 2021-08-03T16:06:09.28
IV.PLLN.EHE. ML:2.2 0.0002405 0.64 AML other m 2021-08-03T16:06:09.55
IV.SSY.HHN. ML:2.8 0.000819 0.24 AML other m 2021-08-03T16:06:10.02
IV.RAFF.HHN. ML:2.2 0.0001625 0.46 AML other m 2021-08-03T16:06:11.45
IV.RAFF.HHE. ML:2.4 0.00026450000000000003 0.48 AML other m 2021-08-03T16:06:11.39
IV.PLLN.EHN. ML:1.9 0.0001135 0.92 AML other m 2021-08-03T16:06:11.30
IV.HMDC.HHN. ML:2.5 0.00029049999999999996 0.42 AML other m 2021-08-03T16:06:12.13
IV.HMDC.HHE. ML:2.4 0.000219 0.28 AML other m 2021-08-03T16:06:12.81
IV.HAVL.HHN. ML:2.2 0.0001545 0.92 AML other m 2021-08-03T16:06:13.97
IV.HVZN.HHN. ML:2.2 0.0002095 0.42 AML other m 2021-08-03T16:06:14.65
IV.HAVL.HHE. ML:2.1 0.0001256 0.86 AML other m 2021-08-03T16:06:17.51
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
Waveforms Seismic signals in miniseed + resp format Download