Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 04-04-2021 and time 15:47:47 (UTC) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML 2.3 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 04-04-2021 15:47:47 (UTC)
  • 04-04-2021 17:47:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.8120, 16.1780 at 9 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
Pizzo VV 8 9278 9278
Francavilla Angitola VV 9 1939 11217
Filadelfia VV 11 5384 16601
Maierato VV 12 2188 18789
Curinga CZ 12 6779 25568
Sant'Onofrio VV 13 3067 28635
Polia VV 14 1023 29658
Monterosso Calabro VV 14 1729 31387
Filogaso VV 15 1417 32804
San Pietro a Maida CZ 15 4200 37004
Stefanaconi VV 16 2494 39498
Briatico VV 16 4053 43551
Vibo Valentia VV 16 33941 77492
Capistrano VV 17 1042 78534
Maida CZ 17 4566 83100
Jacurso CZ 18 624 83724
San Nicola da Crissa VV 19 1335 85059
Gizzeria CZ 19 4982 90041
San Gregorio d'Ippona VV 20 2527 92568

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Lamezia Terme (70714 inhabitants)
38 Km W of Catanzaro (90612 inhabitants)
54 Km S of Cosenza (67546 inhabitants)
87 Km W of Crotone (62178 inhabitants)
87 Km NE of Messina (238439 inhabitants)
91 Km NE of Reggio di Calabria (183035 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 2.3 2021-04-04
15:47:47		 38.8118 16.1782 9 2021-07-12
16:55:13		 Bollettino Sismico Italiano INGV 90642351
Reviewed
Rev100 		ML 2.3 2021-04-04
15:47:47		 38.8003 16.1823 7 2021-04-04
15:54:04		 Sala Sismica INGV-Roma 88768581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-04 15:47:47 ± 0.14
Latitude 38.8118 ± 0.0063
Longitude 16.1782 ± 0.0092
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90642351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 804
Semi-minor axis of confidence ellipse (meter) 477
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 308
Circular confidence region, given by single value of horizontal uncertainty (meter) 800.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.16907
Epicentral distance of station farthest from the epicenter (degree) 1.64936
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 88768581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-04 15:54:04

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 52
Type of magnitude ML
Reference to an origin 90642351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-31 00:03:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CMPR.HHZ. 2021-04-04T15:48:15.90 0.3 undecidable manual P 336 183.0834 38 -1.54 27
IV.MCEL.HHZ. 2021-04-04T15:48:14.20 0.6 undecidable manual P 349 170.8956 50 -1.53 19
IV.MGR.HHZ. 2021-04-04T15:48:12.27 0.3 undecidable manual P 340 156.5211 50 -1.24 37
IV.SIRI.HHZ. 2021-04-04T15:48:11.75 0.3 undecidable manual P 350 154.3344 50 -1.42 34
IV.CELI.HHZ. 2021-04-04T15:48:10.22 0.6 undecidable manual S 23 71.4729 50 0.52 41
IV.MUCR.HHZ. 2021-04-04T15:48:10.88 0.6 undecidable manual P 233 141.8469 50 -0.38 37
IV.IFIL.HHZ. 2021-04-04T15:48:09.95 0.6 undecidable manual P 259 141.4473 50 -1.25 26
IV.AIO.HHZ. 2021-04-04T15:48:08.84 0.3 undecidable manual P 222 124.2867 50 0.29 58
IV.MMN.HHZ. 2021-04-04T15:48:07.72 0.3 undecidable manual P 352 120.7902 50 -0.29 59
IV.MILZ.HHN. 2021-04-04T15:48:05.26 0.3 undecidable manual P 234 101.7204 50 0.19 62
IV.MPNC.HHZ. 2021-04-04T15:48:05.26 0.3 undecidable manual P 224 102.9192 50 0.01 65
IV.GRIS.HNE. 2021-04-04T15:48:05.61 0.3 undecidable manual P 345 106.7154 50 -0.23 61
IV.SPS2.HHZ. 2021-04-04T15:48:05.56 0.6 undecidable manual S 15 54.9006 50 0.27 45
IV.TDS.HHZ. 2021-04-04T15:48:04.12 0.6 undecidable manual P 8 95.1381 50 0.07 43
IV.SERS.HHZ. 2021-04-04T15:48:04.01 1.0 undecidable manual S 60 50.616 50 -0.11 23
IV.PIPA.HHZ. 2021-04-04T15:48:04.87 0.6 undecidable manual P 36 92.6406 50 1.2 29
IV.MSRU.HHZ. 2021-04-04T15:48:03.18 0.3 undecidable manual P 224 84.0492 50 0.82 53
IV.LADO.EHE. 2021-04-04T15:48:03.91 0.6 undecidable manual P 53 86.6466 50 1.16 30
IV.CET2.HHZ. 2021-04-04T15:48:02.44 0.3 undecidable manual P 346 81.8514 50 0.44 62
IV.SELL.HHZ. 2021-04-04T15:48:02.00 0.6 undecidable manual S 64 43.2234 50 -0.16 47
IV.PLAC.HHZ. 2021-04-04T15:48:02.65 0.6 undecidable manual S 151 46.1205 50 -0.28 45
IV.SOI.EHZ. 2021-04-04T15:48:02.13 0.3 undecidable manual P 188 82.6506 50 0 67
IV.IST3.HHZ. 2021-04-04T15:48:02.64 0.3 undecidable manual P 269 81.9513 50 0.62 58
IV.SICLA.EHZ. 2021-04-04T15:48:01.22 0.3 undecidable manual P 213 73.5708 50 0.48 62
IV.FERC.HNE. 2021-04-04T15:48:01.54 1.0 undecidable manual S 186 40.0266 50 0.22 23
IV.CELI.HHZ. 2021-04-04T15:48:00.76 0.3 undecidable manual P 23 71.4729 50 0.36 64
IV.JOPP.HHZ. 2021-04-04T15:47:59.27 0.3 undecidable manual S 228 34.0437 50 -0.44 67
IV.SPS2.HHZ. 2021-04-04T15:47:58.09 0.1 undecidable manual P 15 54.9006 50 0.23 90
IV.SERS.HHZ. 2021-04-04T15:47:57.17 0.3 undecidable manual P 60 50.616 50 -0.02 71
IV.PLAC.HHZ. 2021-04-04T15:47:56.40 0.1 positive manual P 151 46.1205 50 -0.1 94
IV.FERC.HNE. 2021-04-04T15:47:55.67 0.1 undecidable manual P 186 40.0266 50 0.1 95
IV.GRI.EHZ. 2021-04-04T15:47:55.05 0.3 undecidable manual S 87 20.9679 113 -0.58 66
IV.SELL.HHZ. 2021-04-04T15:47:55.90 0.3 undecidable manual P 64 43.2234 50 -0.16 70
IV.JOPP.HHZ. 2021-04-04T15:47:54.49 0.1 positive manual P 228 34.0437 50 -0.15 95
IV.GIZZ.HHZ. 2021-04-04T15:47:54.90 0.3 undecidable manual S 8 18.7701 116 -0.06 75
IV.GIZZ.HHZ. 2021-04-04T15:47:52.31 0.1 negative manual P 8 18.7701 116 0.41 93
IV.GRI.EHZ. 2021-04-04T15:47:52.32 0.1 negative manual P 87 20.9679 113 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GRI.EHN. ML:3.1 0.00908 0.34 AML other m 2021-04-04T15:47:55.64
IV.GRI.EHE. ML:2.9 0.005505000000000001 0.44 AML other m 2021-04-04T15:47:56.01
IV.JOPP.HHE. ML:2.3 0.0008965 0.76 AML other m 2021-04-04T15:48:01.18
IV.JOPP.HHN. ML:2.3 0.0008380000000000001 0.68 AML other m 2021-04-04T15:48:01.46
IV.PLAC.HHN. ML:2.6 0.00108 0.34 AML other m 2021-04-04T15:48:03.76
IV.PLAC.HNN. ML:2.5 0.000891 0.52 AML other m 2021-04-04T15:48:03.85
IV.SELL.HHE. ML:1.8 0.000202 0.74 AML other m 2021-04-04T15:48:03.70
IV.PLAC.HHE. ML:2.5 0.0008954999999999999 0.5 AML other m 2021-04-04T15:48:03.84
IV.PLAC.HNE. ML:2.5 0.0010135 0.72 AML other m 2021-04-04T15:48:04.76
IV.SELL.HHN. ML:1.7 0.000151 0.3 AML other m 2021-04-04T15:48:05.13
IV.SELL.HNE. ML:2.3 0.0006025000000000001 0.28 AML other m 2021-04-04T15:48:05.49
IV.SERS.HNE. ML:2.1 0.000307 0.6 AML other m 2021-04-04T15:48:05.60
IV.SERS.HHN. ML:2.1 0.0003025 0.24 AML other m 2021-04-04T15:48:06.59
IV.SERS.HHE. ML:2.1 0.000324 0.44 AML other m 2021-04-04T15:48:06.87
IV.SPS2.HHE. ML:2.2 0.0003665 1.1 AML other m 2021-04-04T15:48:06.29
IV.SERS.HNN. ML:2.1 0.0003045 0.44 AML other m 2021-04-04T15:48:06.88
IV.SELL.HNN. ML:2.2 0.00049 0.58 AML other m 2021-04-04T15:48:07.26
IV.SPS2.HHN. ML:2.4 0.0005595 1.74 AML other m 2021-04-04T15:48:09.95
IV.SICLA.EHN. ML:2.4 0.0004055 0.64 AML other m 2021-04-04T15:48:13.37
IV.CELI.HNN. ML:2.5 0.00046550000000000004 0.44 AML other m 2021-04-04T15:48:13.77
IV.CELI.HHN. ML:2.5 0.0004665 0.44 AML other m 2021-04-04T15:48:13.77
IV.CELI.HHE. ML:2.0 0.0001625 0.48 AML other m 2021-04-04T15:48:14.37
IV.CET2.HHN. ML:2.8 0.00085 0.56 AML other m 2021-04-04T15:48:14.60
IV.CELI.HNE. ML:2.0 0.000162 0.82 AML other m 2021-04-04T15:48:15.17
IV.CET2.HHE. ML:2.6 0.0005434999999999999 0.68 AML other m 2021-04-04T15:48:15.39
IV.IST3.HHN. ML:3.0 0.001375 0.46 AML other m 2021-04-04T15:48:16.49
IV.IST3.HNN. ML:3.0 0.001315 0.46 AML other m 2021-04-04T15:48:16.49
IV.IST3.HNE. ML:2.8 0.0008935 0.42 AML other m 2021-04-04T15:48:16.89
IV.IST3.HHE. ML:2.9 0.00108 0.42 AML other m 2021-04-04T15:48:16.89
IV.SICLA.EHE. ML:2.3 0.00034199999999999996 1.02 AML other m 2021-04-04T15:48:17.70
IV.MSRU.HHE. ML:2.5 0.000442 0.36 AML other m 2021-04-04T15:48:17.02
IV.MSRU.HHN. ML:2.4 0.00029749999999999997 1.14 AML other m 2021-04-04T15:48:17.26
IV.SOI.EHN. ML:2.2 0.000215 1.28 AML other m 2021-04-04T15:48:18.64
IV.SOI.EHE. ML:2.1 0.0001705 0.42 AML other m 2021-04-04T15:48:18.56
IV.TDS.HHN. ML:2.0 0.0001034 1.12 AML other m 2021-04-04T15:48:19.32
IV.MPNC.HHN. ML:2.6 0.000343 0.34 AML other m 2021-04-04T15:48:20.06
IV.TDS.HHE. ML:1.9 0.00009185 0.9 AML other m 2021-04-04T15:48:20.06
IV.PIPA.HHE. ML:2.3 0.00021799999999999999 1.3 AML other m 2021-04-04T15:48:23.96
IV.MPNC.HHE. ML:2.6 0.000366 0.4 AML other m 2021-04-04T15:48:24.79
IV.PIPA.HHN. ML:2.1 0.000157 0.46 AML other m 2021-04-04T15:48:25.55
IV.MMN.HHN. ML:2.7 0.00035250000000000006 1.58 AML other m 2021-04-04T15:48:25.81
IV.AIO.HHE. ML:2.1 0.0000895 0.72 AML other m 2021-04-04T15:48:26.99
IV.MMN.HHE. ML:2.7 0.0003375 1.8 AML other m 2021-04-04T15:48:27.98
IV.MGR.HHN. ML:2.3 0.0000937 0.2 AML other m 2021-04-04T15:48:35.46
IV.SIRI.HHE. ML:2.5 0.000152 0.3 AML other m 2021-04-04T15:48:35.57
IV.MGR.HHE. ML:2.3 0.00009085 0.62 AML other m 2021-04-04T15:48:35.94
IV.SIRI.HHN. ML:2.3 0.0001017 0.62 AML other m 2021-04-04T15:48:37.38
IV.AIO.HHN. ML:2.1 0.00008659999999999999 0.38 AML other m 2021-04-04T15:48:38.59
IV.CMPR.HHN. ML:2.1 0.00004705 0.42 AML other m 2021-04-04T15:48:41.01
IV.CMPR.HHE. ML:2.1 0.00004445 0.74 AML other m 2021-04-04T15:48:41.92
IV.MCEL.HNE. ML:2.5 0.00013350000000000002 1.4 AML other m 2021-04-04T15:48:46.75
IV.MCEL.HNN. ML:2.5 0.00011549999999999999 0.96 AML other m 2021-04-04T15:48:48.91
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