Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 14-11-2021 and time 20:23:49 (Italy) in region Costa Catanese (Catania)

A magnitude ML 1.7 earthquake occured in region: Costa Catanese (Catania), on

  • 14-11-2021 19:23:49 (UTC)
  • 14-11-2021 20:23:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.4700, 15.2220 at 21 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 12 18723 18723
Catania CT 12 314555 333278
San Gregorio di Catania CT 15 11966 345244
Valverde CT 15 7840 353084
Sant'Agata li Battiati CT 16 9479 362563
Aci Catena CT 16 29851 392414
San Giovanni la Punta CT 16 23060 415474
Acireale CT 17 52622 468096
Gravina di Catania CT 17 25838 493934
Aci Sant'Antonio CT 17 17984 511918
Aci Bonaccorsi CT 17 3524 515442
Tremestieri Etneo CT 18 20589 536031
Mascalucia CT 19 31958 567989
Viagrande CT 19 8563 576552
Misterbianco CT 20 49410 625962

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km E of Catania (314555 inhabitants)
17 Km S of Acireale (52622 inhabitants)
46 Km N of Siracusa (122291 inhabitants)
75 Km NE of Ragusa (73313 inhabitants)
79 Km NE of Modica (54633 inhabitants)
80 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km NE of Vittoria (63339 inhabitants)
86 Km SW of Messina (238439 inhabitants)
97 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 1.7 2021-11-14
19:23:49		 37.4702 15.2217 21 2022-03-30
13:04:37		 Bollettino Sismico Italiano INGV 100882881
Reviewed
Rev100 		ML 1.7 2021-11-14
19:23:49		 37.4602 15.2447 18 2021-11-14
19:34:42		 Sala Sismica INGV-Roma 97466991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-14 19:23:49 ± 0.2
Latitude 37.4702 ± 0.0063
Longitude 15.2217 ± 0.0147
Depth (km) 21 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100882881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1300
Semi-minor axis of confidence ellipse (meter) 392
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 294
Circular confidence region, given by single value of horizontal uncertainty (meter) 1300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.68348
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 100882881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-11 16:54:18

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 97466991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-14 19:34:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT17.EHZ. 2021-11-14T19:25:25.82 3.0 undecidable manual Sn -1.97 0
IV.FIR.HHZ. 2021-11-14T19:25:22.26 3.0 undecidable manual Pn 0.48 0
IV.APEC.HHZ. 2021-11-14T19:25:14.26 3.0 undecidable manual Pn 0.36 0
IV.MRLC.HHZ. 2021-11-14T19:25:12.35 3.0 undecidable manual Sg 7.34 0
IV.LRP.EHZ. 2021-11-14T19:24:59.37 3.0 undecidable manual Pg 14.23 0
IV.ERC.EHZ. 2021-11-14T19:24:49.30 3.0 undecidable manual Sn -0.28 0
HL.VLS.HHZ. 2021-11-14T19:24:44.79 3.0 undecidable manual Pn 2.04 0
IV.ICAI.EHZ. 2021-11-14T19:24:35.03 3.0 negative manual Pn 3 0
IV.MTMR.EHZ. 2021-11-14T19:24:34.74 3.0 undecidable manual Pn 3.13 0
IV.GIZZ.HHZ. 2021-11-14T19:24:23.48 3.0 undecidable manual Sn -0.68 0
IV.GRI.EHZ. 2021-11-14T19:24:21.32 3.0 undecidable manual Sn -1.33 0
IV.IST3.HHZ. 2021-11-14T19:24:19.19 3.0 undecidable manual S 1.17 0
IV.HMDC.HHE. 2021-11-14T19:24:11.21 0.6 undecidable manual S 214 68.6757 100 0.44 43
IV.MPNC.HHE. 2021-11-14T19:24:03.29 0.3 undecidable manual P 9 75.8685 99 0.3 65
IV.HMDC.HHE. 2021-11-14T19:24:02.30 0.3 undecidable manual P 214 68.6757 100 0.41 65
IV.SSY.HHZ. 2021-11-14T19:24:02.85 0.6 undecidable manual S 201 37.0296 110 0.27 48
IV.HLNI.HHZ. 2021-11-14T19:24:01.59 0.6 undecidable manual S 246 33.6441 113 -0.14 48
IV.HCRL.HHZ. 2021-11-14T19:24:00.33 0.6 undecidable manual S 219 26.6511 120 0.28 48
IV.EPOZ.HHZ. 2021-11-14T19:23:59.60 0.6 undecidable manual S 353 22.5552 125 0.47 46
IV.AIO.HHN. 2021-11-14T19:23:59.75 0.6 undecidable manual P 1 55.5999 102 -0.16 47
IV.HVZN.HHZ. 2021-11-14T19:23:59.87 0.3 undecidable manual P 234 55.1004 103 0.02 72
IV.HAGA.HHZ. 2021-11-14T19:23:58.36 0.6 undecidable manual S 196 21.3675 127 -0.52 45
IV.SSY.HHZ. 2021-11-14T19:23:57.06 0.3 undecidable manual P 201 37.0296 110 -0.1 73
IV.HLNI.HHZ. 2021-11-14T19:23:56.37 0.1 positive manual P 246 33.6441 113 -0.31 94
IV.HCRL.HHZ. 2021-11-14T19:23:55.65 0.1 positive manual P 219 26.6511 120 -0.05 100
IV.EPOZ.HHZ. 2021-11-14T19:23:55.02 0.3 undecidable manual P 353 22.5552 125 -0.15 75
IV.HAGA.HHZ. 2021-11-14T19:23:54.59 0.3 undecidable manual P 196 21.3675 127 -0.43 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAGA.HHE. ML:1.8 0.00035080645 0.128 AML other m 2021-11-14T19:23:58.60
IV.HAGA.HHN. ML:1.7 0.00024193105 0.0768 AML other m 2021-11-14T19:23:58.89
IV.HCRL.HHE. ML:2.0 0.0005064999999999999 0.2 AML other m 2021-11-14T19:24:00.39
IV.HCRL.HHN. ML:1.7 0.0002295046 0.192 AML other m 2021-11-14T19:24:00.63
IV.EPOZ.HHN. ML:1.6 0.0002015745 0.1408 AML other m 2021-11-14T19:24:01.34
IV.EPOZ.HNN. ML:1.5 0.00014645112499999999 0.1152 AML other m 2021-11-14T19:24:01.36
IV.EPOZ.HHE. ML:1.4 0.00013957915 0.2304 AML other m 2021-11-14T19:24:01.40
IV.EPOZ.HNE. ML:1.3 0.000106639487 0.0896 AML other m 2021-11-14T19:24:01.41
IV.HLNI.HHE. ML:1.5 0.0001105 0.14 AML other m 2021-11-14T19:24:01.70
IV.HLNI.HHN. ML:1.2 0.000066830315 0.1024 AML other m 2021-11-14T19:24:02.60
IV.SSY.HHE. ML:2.3 0.0007235000000000001 0.16 AML other m 2021-11-14T19:24:02.90
IV.SSY.HNN. ML:2.1 0.00040800000000000005 0.16 AML other m 2021-11-14T19:24:02.99
IV.SSY.HHN. ML:2.6 0.001245 0.12 AML other m 2021-11-14T19:24:03.00
IV.SSY.HNE. ML:2.0 0.0003082678 0.1152 AML other m 2021-11-14T19:24:03.07
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