Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 21-11-2021 and time 19:33:17 (Italy) in region Costa Calabra sud orientale (Reggio di Calabria)

A magnitude ML 1.4 earthquake occured in region: Costa Calabra sud orientale (Reggio di Calabria), on

  • 21-11-2021 18:33:17 (UTC)
  • 21-11-2021 19:33:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7880, 15.6440 at 34 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
Roghudi RC 19 1104 1104
Melito di Porto Salvo RC 19 11355 12459

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km S of Reggio di Calabria (183035 inhabitants)
46 Km S of Messina (238439 inhabitants)
46 Km E of Acireale (52622 inhabitants)
58 Km NE of Catania (314555 inhabitants)
87 Km NE 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 1.4 2021-11-21
18:33:17		 37.788 15.6437 34 2022-03-30
13:04:36		 Bollettino Sismico Italiano INGV 100788431
Reviewed
Rev100 		ML 1.4 2021-11-21
18:33:17		 37.7937 15.6623 32 2021-11-21
18:41:42		 Sala Sismica INGV-Roma 97664431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-21 18:33:17 ± 0.11
Latitude 37.7880 ± 0.0072
Longitude 15.6437 ± 0.0114
Depth (km) 34 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100788431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1070
Semi-minor axis of confidence ellipse (meter) 377
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 303
Circular confidence region, given by single value of horizontal uncertainty (meter) 1070.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.95598
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 97664431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-21 18:41:42

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 100788431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-08 17:14:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT17.EHZ. 2021-11-21T18:35:16.85 3.0 undecidable manual Sg 17.5 0
MN.TRI.HHZ. 2021-11-21T18:35:09.15 3.0 negative manual Pn -2.66 0
IV.LRP.EHZ. 2021-11-21T18:35:09.65 3.0 undecidable manual Sn 3.61 0
IV.PP3.EHZ. 2021-11-21T18:34:59.49 3.0 negative manual Pg 18.440001 0
IT.FIE.HGZ. 2021-11-21T18:34:56.65 3.0 undecidable manual Pn 0.9 0
IV.MTMR.EHZ. 2021-11-21T18:34:51.06 3.0 undecidable manual Sg 9.51 0
IV.PE3.EHZ. 2021-11-21T18:34:46.12 3.0 undecidable manual Pn -2.83 0
IV.MURB.HHZ. 2021-11-21T18:34:40.64 3.0 positive manual Pn -2.77 0
IV.LRP.EHZ. 2021-11-21T18:34:21.85 3.0 undecidable manual Pn 3.08 0
IX.NSC3.EHZ.02 2021-11-21T18:34:07.31 3.0 undecidable manual Pn 3.46 0
IX.SCL3.EHZ.02 2021-11-21T18:33:59.61 3.0 undecidable manual Pn -1.79 0
IX.PGN3.HHZ.02 2021-11-21T18:33:57.50 3.0 positive manual Pn -2.2 0
IV.HVZN.HHZ. 2021-11-21T18:33:49.81 0.3 undecidable manual S 231 106.116 54 1.21 45
IV.JOPP.HHZ. 2021-11-21T18:33:45.18 0.3 undecidable manual S 13 93.24 54 -0.66 58
IV.FERC.HHZ.00 2021-11-21T18:33:44.92 0.6 undecidable manual S 30 84.9483 107 1.03 33
IV.SSY.HHZ. 2021-11-21T18:33:44.47 0.6 undecidable manual S 216 86.0472 107 0.3 44
IV.HLNI.HHZ. 2021-11-21T18:33:43.19 0.6 undecidable manual S 235 83.5497 108 -0.34 43
IV.HAGA.HHZ. 2021-11-21T18:33:39.83 0.6 undecidable manual S 218 70.4739 111 -0.39 44
IV.MILZ.HHZ. 2021-11-21T18:33:38.66 0.3 undecidable manual S 326 64.5909 113 -0.12 70
MN.CEL.HHZ. 2021-11-21T18:33:36.65 0.6 undecidable manual S 23 56.7987 116 -0.22 47
IV.HVZN.HHZ. 2021-11-21T18:33:35.96 0.3 undecidable manual P 231 106.116 54 0.37 62
IV.NOV.HHE. 2021-11-21T18:33:35.81 0.3 undecidable manual S 301 51.7038 119 0.14 73
IV.PLAC.HHE. 2021-11-21T18:33:35.25 0.3 undecidable manual P 43 100.9212 54 0.29 63
IV.AIO.HHZ. 2021-11-21T18:33:33.36 0.6 undecidable manual S 300 41.3253 125 0.05 50
TV.GMB1.HHZ. 2021-11-21T18:33:33.94 0.6 undecidable manual S 20 45.2214 122 -0.25 48
IV.FERC.HHZ.00 2021-11-21T18:33:33.38 0.3 undecidable manual P 30 84.9483 107 0.51 62
IV.JOPP.HHZ. 2021-11-21T18:33:33.51 0.1 undecidable manual P 13 93.24 54 -0.49 83
IV.HLNI.HHZ. 2021-11-21T18:33:32.32 0.3 undecidable manual P 235 83.5497 108 -0.34 65
IV.SSY.HHZ. 2021-11-21T18:33:32.61 0.3 undecidable manual P 216 86.0472 107 -0.43 64
IV.MUCR.HHZ. 2021-11-21T18:33:31.37 0.3 undecidable manual P 293 73.0713 110 0.23 69
IV.HAGA.HHZ. 2021-11-21T18:33:30.48 0.3 undecidable manual P 218 70.4739 111 -0.28 68
IV.MTTG.HHZ. 2021-11-21T18:33:30.26 0.6 undecidable manual S 12 24.3534 141 0.28 49
IV.MILZ.HHZ. 2021-11-21T18:33:29.72 0.3 undecidable manual P 326 64.5909 113 -0.2 69
MN.CEL.HHZ. 2021-11-21T18:33:28.54 0.1 undecidable manual P 23 56.7987 116 -0.28 93
IV.NOV.HHE. 2021-11-21T18:33:28.32 0.1 undecidable manual P 301 51.7038 119 0.19 96
TV.GMB1.HHZ. 2021-11-21T18:33:27.21 0.1 undecidable manual P 20 45.2214 122 -0.06 99
IV.AIO.HHZ. 2021-11-21T18:33:26.95 0.3 undecidable manual P 300 41.3253 125 0.19 73
IV.MTTG.HHZ. 2021-11-21T18:33:25.02 0.1 positive manual P 12 24.3534 141 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTTG.HHN. ML:1.5 0.0001124 0.32 AML other m 2021-11-21T18:33:30.63
IV.MTTG.HHE. ML:1.4 0.000081 1.4 AML other m 2021-11-21T18:33:30.89
TV.GMB1.HNN. ML:1.6 0.0000883 1.12 AML other m 2021-11-21T18:33:34.59
TV.GMB1.HHN. ML:0.9 0.0000203 1.12 AML other m 2021-11-21T18:33:34.59
TV.GMB1.HNE. ML:1.4 0.00005965 0.16 AML other m 2021-11-21T18:33:34.66
TV.GMB1.HHE. ML:0.9 0.000017749999999999998 0.18 AML other m 2021-11-21T18:33:34.74
MN.CEL.HHN. ML:1.2 0.0000322 1.42 AML other m 2021-11-21T18:33:37.77
IV.MILZ.HHN. ML:1.9 0.00013020000000000002 0.44 AML other m 2021-11-21T18:33:39.51
IV.MILZ.HHE. ML:2.1 0.00022199999999999998 0.44 AML other m 2021-11-21T18:33:39.52
MN.CEL.HHE. ML:1.4 0.000046399999999999996 0.8 AML other m 2021-11-21T18:33:39.73
IV.HLNI.HHN. ML:1.6 0.00005155 0.12 AML other m 2021-11-21T18:33:44.13
IV.HLNI.HHE. ML:1.7 0.000054000000000000005 0.98 AML other m 2021-11-21T18:33:44.49
IV.JOPP.HHN. ML:1.3 0.00001845 1.58 AML other m 2021-11-21T18:33:45.88
IV.JOPP.HHE. ML:1.0 0.0000105001495 0.4992 AML other m 2021-11-21T18:33:47.51
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