Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 07-07-2021 and time 18:03:15 (Italy) in region Randazzo (CT)

A magnitude ML 2.1 earthquake occured in region: Randazzo (CT), on

  • 07-07-2021 16:03:15 (UTC)
  • 07-07-2021 18:03:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8770, 14.9500 at 32 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 0 10900 10900
Santa Domenica Vittoria ME 5 980 11880
Roccella Valdemone ME 8 666 12546
Maletto CT 9 3920 16466
Moio Alcantara ME 9 717 17183
Malvagna ME 10 733 17916
Maniace CT 13 3765 21681
Floresta ME 13 485 22166
Bronte CT 14 19172 41338
Castiglione di Sicilia CT 15 3215 44553
Francavilla di Sicilia ME 17 3945 48498
Montalbano Elicona ME 17 2287 50785
Linguaglossa CT 18 5403 56188
San Piero Patti ME 20 2915 59103
Motta Camastra ME 20 845 59948
Ucria ME 20 1058 61006

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Acireale (52622 inhabitants)
43 Km N of Catania (314555 inhabitants)
64 Km SW of Messina (238439 inhabitants)
66 Km W of Reggio di Calabria (183035 inhabitants)
89 Km NE of Caltanissetta (63360 inhabitants)
96 Km NW 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 2.1 2021-07-07
16:03:15		 37.8773 14.9503 32 2021-12-29
11:12:29		 Bollettino Sismico Italiano INGV 95332821
Reviewed
Rev200 		ML 1.8 2021-07-07
16:03:14		 37.895 14.944 29 2021-09-12
08:00:29		 Sala Operativa INGV_OE (Catania) 92367871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-07 16:03:15 ± 0.09
Latitude 37.8773 ± 0.0036
Longitude 14.9503 ± 0.0103
Depth (km) 32 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95332821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 860
Semi-minor axis of confidence ellipse (meter) 139
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 51
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) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.92720
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 95332821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-12 08:00:12

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 92367871
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-07-07 16:11:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-07-07T16:03:45.31 0.6 undecidable manual S 172 102.9192 54 -0.1 42
IV.HVZN.HHZ. 2021-07-07T16:03:40.29 0.6 undecidable manual S 195 80.2641 107 0.59 38
IV.SSY.HHZ. 2021-07-07T16:03:39.96 0.3 undecidable manual S 172 80.5638 107 0.18 64
IV.HAGA.HHZ. 2021-07-07T16:03:36.71 0.6 undecidable manual S 165 68.1762 110 0.08 45
IV.HCRL.HHZ. 2021-07-07T16:03:35.89 0.6 undecidable manual S 174 66.2781 111 -0.28 43
IV.HLNI.HHZ. 2021-07-07T16:03:34.16 0.3 undecidable manual S 187 59.0964 113 -0.22 67
IV.HAVL.HHZ. 2021-07-07T16:03:32.33 0.3 undecidable manual P 172 102.9192 54 -0.23 61
IV.HMDC.HHZ. 2021-07-07T16:03:32.33 0.3 undecidable manual P 188 102.9192 54 -0.23 61
IV.RAFF.HHZ. 2021-07-07T16:03:31.20 0.3 undecidable manual P 216 89.1441 105 0.62 56
IV.SSY.HHZ. 2021-07-07T16:03:29.24 0.3 undecidable manual P 172 80.5638 107 -0.07 66
IV.HVZN.HHZ. 2021-07-07T16:03:29.38 0.3 undecidable manual P 195 80.2641 107 0.12 65
IV.MCPD.HHZ. 2021-07-07T16:03:28.73 0.6 undecidable manual S 325 33.0447 130 0.34 45
IV.HCRL.HHZ. 2021-07-07T16:03:27.03 0.1 undecidable manual P 174 66.2781 111 -0.19 88
IV.HAGA.HHZ. 2021-07-07T16:03:27.32 0.1 undecidable manual P 165 68.1762 110 -0.17 88
IV.MSRU.HHZ. 2021-07-07T16:03:27.92 0.3 undecidable manual P 48 64.8906 111 0.9 53
IV.IVPL.HHZ. 2021-07-07T16:03:26.08 0.3 undecidable manual P 3 55.4001 115 0.41 65
IV.ECZM.HHN. 2021-07-07T16:03:26.22 0.6 undecidable manual S 194 16.6722 150 0.68 42
IV.ESCV.HHZ. 2021-07-07T16:03:25.77 0.6 undecidable manual S 219 18.6702 147 -0.05 50
IV.ESPC.HHN. 2021-07-07T16:03:25.88 0.6 undecidable manual S 162 21.5673 143 -0.39 46
IV.NOV.HHZ. 2021-07-07T16:03:25.49 0.6 undecidable manual S 44 23.3544 140 -1.07 34
IV.HLNI.HHZ. 2021-07-07T16:03:25.89 0.1 undecidable manual P 187 59.0964 113 -0.3 88
IV.EMNR.HHZ. 2021-07-07T16:03:25.10 0.6 undecidable manual S 135 9.4794 162 0.36 47
IV.MILZ.HHZ. 2021-07-07T16:03:25.16 0.3 undecidable manual P 29 50.1165 117 0.22 68
IV.EMCN.HHN. 2021-07-07T16:03:25.75 0.6 undecidable manual S 143 11.9769 157 0.77 41
IV.MUCR.HHZ. 2021-07-07T16:03:25.30 0.6 undecidable manual S 340 19.5693 145 -0.64 42
IV.ECBD.HHN. 2021-07-07T16:03:25.83 0.6 undecidable manual S 132 16.0728 151 0.37 46
IV.MPNC.HHZ. 2021-07-07T16:03:24.66 0.3 undecidable manual P 50 46.1205 120 0.26 68
IV.EMSG.HHZ. 2021-07-07T16:03:24.01 0.6 undecidable manual S 180 6.2937 168 -0.51 46
IV.EPZF.HHZ. 2021-07-07T16:03:24.83 0.6 undecidable manual S 234 10.0788 161 0.03 50
IV.ECTS.HHZ. 2021-07-07T16:03:24.58 0.6 undecidable manual S 88 14.9739 152 -0.73 41
IV.MCPD.HHZ. 2021-07-07T16:03:22.66 0.1 positive manual P 325 33.0447 130 -0.07 96
IV.EMFO.HHE. 2021-07-07T16:03:21.36 0.3 undecidable manual P 142 19.9689 145 0.01 74
IV.EMPL.HHZ. 2021-07-07T16:03:21.69 0.6 undecidable manual P 175 22.0668 142 0.14 48
IV.EFIU.HHE. 2021-07-07T16:03:21.94 0.6 undecidable manual P 113 24.753 139 0.13 48
IV.ECBD.HHN. 2021-07-07T16:03:21.13 0.1 undecidable manual P 132 16.0728 151 0.09 98
IV.ECZM.HHN. 2021-07-07T16:03:21.19 0.1 undecidable manual P 194 16.6722 150 0.11 98
IV.ESCV.HHZ. 2021-07-07T16:03:21.22 0.1 negative manual P 219 18.6702 147 -0.03 99
IV.EMFS.HHE. 2021-07-07T16:03:21.42 0.3 undecidable manual P 167 17.9709 148 0.23 71
IV.AIO.HHZ. 2021-07-07T16:03:21.95 0.3 undecidable manual P 67 26.8509 136 -0.08 72
IV.ESPC.HHN. 2021-07-07T16:03:21.22 0.1 undecidable manual P 162 21.5673 143 -0.29 94
IV.NOV.HHZ. 2021-07-07T16:03:21.38 0.1 undecidable manual P 44 23.3544 140 -0.29 92
IV.ESLN.HHZ. 2021-07-07T16:03:21.61 0.3 undecidable manual P 174 20.5683 144 0.2 71
IV.ESAL.HHZ. 2021-07-07T16:03:21.72 0.3 undecidable manual P 130 21.0678 143 0.26 71
IV.EPZF.HHZ. 2021-07-07T16:03:20.51 0.1 negative manual P 234 10.0788 161 -0.14 98
IV.EMCN.HHN. 2021-07-07T16:03:20.80 0.1 undecidable manual P 143 11.9769 157 0.04 100
IV.MUCR.HHZ. 2021-07-07T16:03:20.91 0.1 positive manual P 340 19.5693 145 -0.41 91
IV.ECTS.HHZ. 2021-07-07T16:03:20.63 0.1 undecidable manual P 88 14.9739 152 -0.32 93
IV.EPIT.HHZ. 2021-07-07T16:03:20.84 0.1 negative manual P 128 11.877 158 0.09 99
IV.ESVO.HHE. 2021-07-07T16:03:20.84 0.1 undecidable manual P 182 11.5773 158 0.1 99
IV.EMSG.HHZ. 2021-07-07T16:03:20.37 0.1 negative manual P 180 6.2937 168 -0.12 99
IV.EMNR.HHZ. 2021-07-07T16:03:20.72 0.1 undecidable manual P 135 9.4794 162 0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ECTS.HHE. ML:2.0 0.0003845 0.38 AML other m 2021-07-07T16:03:24.94
IV.ECTS.HHN. ML:2.1 0.0005425 0.3 AML other m 2021-07-07T16:03:25.15
IV.EPZF.HHE. ML:2.5 0.0013744999999999999 0.34 AML other m 2021-07-07T16:03:25.29
IV.EPZF.HHN. ML:2.4 0.00125 0.4 AML other m 2021-07-07T16:03:25.43
IV.MUCR.HHE. ML:2.0 0.000348 0.34 AML other m 2021-07-07T16:03:25.62
IV.MUCR.HHN. ML:2.0 0.000434 0.28 AML other m 2021-07-07T16:03:25.67
IV.AIO.HHE. ML:1.6 0.0001385 1.62 AML other m 2021-07-07T16:03:26.17
IV.NOV.HHE. ML:2.3 0.0007515000000000001 1.52 AML other m 2021-07-07T16:03:27.93
IV.AIO.HHN. ML:1.6 0.00014350000000000002 1.1 AML other m 2021-07-07T16:03:27.29
IV.NOV.HHN. ML:2.2 0.000683 0.26 AML other m 2021-07-07T16:03:27.28
IV.ESAL.HHN. ML:2.0 0.0004165 1 AML other m 2021-07-07T16:03:27.49
IV.EPIT.HHE. ML:2.1 0.0005669999999999999 0.78 AML other m 2021-07-07T16:03:27.14
IV.EMSG.HHN. ML:2.3 0.000991 0.34 AML other m 2021-07-07T16:03:28.52
IV.ESCV.HHN. ML:2.1 0.0005529999999999999 0.36 AML other m 2021-07-07T16:03:29.42
IV.MCPD.HHN. ML:1.8 0.00017749999999999998 0.58 AML other m 2021-07-07T16:03:29.98
IV.MCPD.HHE. ML:1.5 0.0001001 1.56 AML other m 2021-07-07T16:03:29.93
IV.ESCV.HHE. ML:2.0 0.000431 1.7 AML other m 2021-07-07T16:03:29.13
IV.EMSG.HHE. ML:2.1 0.0005945 1.5 AML other m 2021-07-07T16:03:30.17
IV.ESAL.HHE. ML:2.2 0.0006495 1.28 AML other m 2021-07-07T16:03:30.31
IV.EPIT.HHN. ML:2.2 0.0007855 1.1 AML other m 2021-07-07T16:03:31.30
IV.EMPL.HHE. ML:2.1 0.00048450000000000007 0.5 AML other m 2021-07-07T16:03:33.41
IV.MPNC.HHN. ML:1.8 0.000148 0.36 AML other m 2021-07-07T16:03:33.58
IV.EMPL.HHN. ML:2.2 0.0005625 1.08 AML other m 2021-07-07T16:03:33.59
IV.MILZ.HHN. ML:2.0 0.00020850000000000003 0.44 AML other m 2021-07-07T16:03:34.35
IV.HLNI.HHN. ML:2.1 0.0002395 0.5 AML other m 2021-07-07T16:03:34.44
IV.HLNI.HHE. ML:2.3 0.0003595 0.1 AML other m 2021-07-07T16:03:34.71
IV.IVPL.HHN. ML:1.9 0.0001565 1.08 AML other m 2021-07-07T16:03:35.79
IV.MILZ.HHE. ML:2.3 0.00040100000000000004 0.4 AML other m 2021-07-07T16:03:35.50
IV.MPNC.HHE. ML:1.7 0.0001175 0.54 AML other m 2021-07-07T16:03:35.13
IV.HCRL.HHE. ML:2.2 0.0002505 0.4 AML other m 2021-07-07T16:03:36.41
IV.HCRL.HHN. ML:2.3 0.00033499999999999996 0.34 AML other m 2021-07-07T16:03:36.52
IV.IVPL.HHE. ML:2.0 0.00017299999999999998 1.66 AML other m 2021-07-07T16:03:37.85
IV.HAGA.HHE. ML:2.0 0.00013800000000000002 0.4 AML other m 2021-07-07T16:03:37.09
IV.HAGA.HHN. ML:2.2 0.0002155 0.64 AML other m 2021-07-07T16:03:37.00
IV.SSY.HHE. ML:2.7 0.0005989999999999999 1.12 AML other m 2021-07-07T16:03:42.27
IV.HVZN.HHN. ML:2.0 0.0001225 1.26 AML other m 2021-07-07T16:03:43.93
IV.SSY.HHN. ML:3.0 0.0013900000000000002 0.56 AML other m 2021-07-07T16:03:43.35
IV.RAFF.HHE. ML:1.7 0.00005989999999999999 0.98 AML other m 2021-07-07T16:03:44.60
IV.RAFF.HHN. ML:1.8 0.00006555 0.26 AML other m 2021-07-07T16:03:45.28
IV.HVZN.HHE. ML:2.2 0.000177 0.56 AML other m 2021-07-07T16:03:45.61
IV.HMDC.HHE. ML:2.2 0.000131 0.34 AML other m 2021-07-07T16:03:45.98
IV.HMDC.HHN. ML:2.1 0.00011415 0.64 AML other m 2021-07-07T16:03:46.86
IV.HAVL.HHE. ML:2.3 0.0001735 0.2 AML other m 2021-07-07T16:03:47.28
IV.HAVL.HHN. ML:2.3 0.000193 0.26 AML other m 2021-07-07T16:03:47.38
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