Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 01-07-2021 and time 19:02:06 (Italy) in region Costa Catanese (Catania)

A magnitude ML 1.9 earthquake occured in region: Costa Catanese (Catania), on

  • 01-07-2021 17:02:06 (UTC)
  • 01-07-2021 19:02:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.4920, 15.3150 at 24 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
Aci Castello CT 17 18723 18723
Acireale CT 19 52622 71345
Valverde CT 19 7840 79185
Aci Catena CT 20 29851 109036
San Gregorio di Catania CT 20 11966 121002

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SE of Acireale (52622 inhabitants)
20 Km E of Catania (314555 inhabitants)
48 Km N of Siracusa (122291 inhabitants)
75 Km SW of Reggio di Calabria (183035 inhabitants)
81 Km S of Messina (238439 inhabitants)
81 Km NE of Ragusa (73313 inhabitants)
86 Km NE of Modica (54633 inhabitants)
92 Km NE of Vittoria (63339 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 1.9 2021-07-01
17:02:06		 37.4922 15.3152 24 2021-12-29
11:12:52		 Bollettino Sismico Italiano INGV 97778591
Reviewed
Rev100 		ML 1.9 2021-07-01
17:02:06		 37.486 15.3293 10 2021-07-01
17:08:53		 Sala Sismica INGV-Roma 92110521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-01 17:02:06 ± 0.16
Latitude 37.4922 ± 0.0045
Longitude 15.3152 ± 0.0113
Depth (km) 24 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97778591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1050
Semi-minor axis of confidence ellipse (meter) 134
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 103
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 33
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) 0.20594
Epicentral distance of station farthest from the epicenter (degree) 0.89303
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 97778591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-25 11:47:48

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 92110521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-01 17:08:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHE. 2021-07-01T17:02:33.18 0.6 undecidable manual S 11 87.246 100 0.84 36
IV.MPNC.HHN. 2021-07-01T17:02:28.30 0.6 undecidable manual S 3 72.6717 102 -0.21 45
IV.HAVL.HHZ. 2021-07-01T17:02:26.13 0.3 undecidable manual S 196 61.494 104 0.52 64
IV.HVZN.HHZ. 2021-07-01T17:02:26.59 0.6 undecidable manual S 237 63.2922 104 0.51 42
MN.CEL.HNZ. 2021-07-01T17:02:22.91 0.3 undecidable manual P 31 99.123 98 -0.24 63
IV.SSY.HHZ. 2021-07-01T17:02:21.16 0.6 undecidable manual S 210 42.8238 112 0.31 46
IV.MSRU.HHE. 2021-07-01T17:02:21.26 0.3 undecidable manual P 11 87.246 100 -0.08 67
IV.RAFF.HHZ. 2021-07-01T17:02:21.49 0.1 undecidable manual P 251 89.1441 99 -0.14 89
IV.HSRS.HHE. 2021-07-01T17:02:21.69 0.6 undecidable manual S 191 45.0216 111 0.28 47
IV.HLNI.HHZ. 2021-07-01T17:02:20.00 0.6 undecidable manual S 248 42.1245 112 -0.69 42
IV.HMDC.HHZ. 2021-07-01T17:02:19.18 0.6 undecidable manual P 219 75.5688 101 -0.38 43
IV.GALF.HHZ. 2021-07-01T17:02:19.25 0.3 undecidable manual P 290 70.0743 102 0.51 63
IV.HCRL.HHZ. 2021-07-01T17:02:18.67 0.6 undecidable manual S 227 34.0437 118 -0.05 50
IV.MPNC.HHN. 2021-07-01T17:02:18.90 0.3 undecidable manual P 3 72.6717 102 -0.23 67
IV.HVZN.HHZ. 2021-07-01T17:02:17.58 0.3 undecidable manual P 237 63.2922 104 -0.14 70
IV.HAVL.HHZ. 2021-07-01T17:02:17.40 0.1 positive manual P 196 61.494 104 -0.05 94
IV.ESCV.HHZ. 2021-07-01T17:02:16.16 0.3 undecidable manual P 303 52.2033 107 0.08 71
IV.EPOZ.HHE. 2021-07-01T17:02:16.17 0.6 undecidable manual S 331 22.8549 130 -0.07 50
IV.HAGA.HHZ. 2021-07-01T17:02:16.95 0.6 undecidable manual S 212 26.9508 125 -0.16 49
IV.EMNR.HHE. 2021-07-01T17:02:15.04 0.3 undecidable manual P 325 44.0226 111 0.15 72
IV.HSRS.HHE. 2021-07-01T17:02:14.86 0.6 undecidable manual P 191 45.0216 111 -0.17 47
IV.SSY.HHZ. 2021-07-01T17:02:14.66 0.1 positive manual P 210 42.8238 112 -0.04 98
IV.HLNI.HHZ. 2021-07-01T17:02:14.08 0.1 positive manual P 248 42.1245 112 -0.54 88
IV.EPIT.HHZ. 2021-07-01T17:02:14.80 0.3 undecidable manual P 327 42.0246 112 0.2 71
IV.ECBD.HHE. 2021-07-01T17:02:14.19 0.3 undecidable manual P 328 37.7289 115 0.2 72
IV.EMPL.HHZ. 2021-07-01T17:02:13.41 0.6 undecidable manual P 304 36.741 116 -0.44 46
IV.HCRL.HHZ. 2021-07-01T17:02:13.41 0.1 undecidable manual P 227 34.0437 118 -0.07 99
IV.ENIC.HHE. 2021-07-01T17:02:13.67 0.3 undecidable manual P 301 30.0477 122 0.73 62
IV.EMFO.HHE. 2021-07-01T17:02:13.28 0.1 undecidable manual P 324 33.4443 118 -0.12 98
IV.ESAL.HHE. 2021-07-01T17:02:13.63 0.3 undecidable manual P 332 33.2445 119 0.26 72
IV.EVRN.HHE. 2021-07-01T17:02:12.64 0.1 undecidable manual P 324 26.9508 125 0.1 100
IV.HAGA.HHZ. 2021-07-01T17:02:12.40 0.1 positive manual P 212 26.9508 125 -0.15 98
IV.EPOZ.HHE. 2021-07-01T17:02:11.69 0.1 undecidable manual P 331 22.8549 130 -0.35 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAGA.HHE. ML:2.0 0.00042300000000000004 0.22 AML other m 2021-07-01T17:02:17.21
IV.HAGA.HHN. ML:1.7 0.000215 0.06 AML other m 2021-07-01T17:02:17.95
IV.HCRL.HHN. ML:1.8 0.00020850000000000003 1.04 AML other m 2021-07-01T17:02:18.42
IV.HCRL.HHE. ML:1.8 0.0002245 1.88 AML other m 2021-07-01T17:02:18.02
IV.HLNI.HHN. ML:1.8 0.00016949999999999997 0.74 AML other m 2021-07-01T17:02:20.85
IV.HLNI.HHE. ML:1.6 0.000123 1.16 AML other m 2021-07-01T17:02:21.03
IV.SSY.HHE. ML:2.4 0.0006965 0.54 AML other m 2021-07-01T17:02:21.28
IV.SSY.HHN. ML:2.6 0.0012200000000000002 0.1 AML other m 2021-07-01T17:02:21.86
IV.HAVL.HHE. ML:2.2 0.0003075 0.1 AML other m 2021-07-01T17:02:26.43
IV.HAVL.HHN. ML:2.2 0.000325 0.24 AML other m 2021-07-01T17:02:26.70
IV.HVZN.HHN. ML:2.1 0.00022 1.44 AML other m 2021-07-01T17:02:27.92
IV.HVZN.HHE. ML:1.8 0.00011431455 0.2816 AML other m 2021-07-01T17:02:28.57
IV.GALF.HHN. ML:1.8 0.0001005 1.02 AML other m 2021-07-01T17:02:30.37
IV.GALF.HHE. ML:1.7 0.00008175000000000001 1.26 AML other m 2021-07-01T17:02:34.83
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