Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 06-04-2023 and time 18:07:40 (UTC) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML 1.5 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 06-04-2023 18:07:40 (UTC)
  • 06-04-2023 20:07:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.9390, 15.9880 at 41 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
Falerna CZ 17 4028 4028
Nocera Terinese CZ 19 4731 8759
Gizzeria CZ 20 4982 13741

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Lamezia Terme (70714 inhabitants)
46 Km SW of Cosenza (67546 inhabitants)
53 Km W of Catanzaro (90612 inhabitants)
91 Km NE of Messina (238439 inhabitants)
97 Km NE of Reggio di Calabria (183035 inhabitants)
100 Km W of Crotone (62178 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 1.5 2023-04-06
18:07:40		 38.9387 15.9877 41 2024-03-01
17:18:19		 Bollettino Sismico Italiano INGV 124580121
Reviewed
Rev100 		ML 1.4 2023-04-06
18:07:40		 38.9303 15.9357 10 2023-04-06
19:17:08		 Sala Sismica INGV-Roma 116122181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-06 18:07:40 ± 0.1
Latitude 38.9387 ± 0.0054
Longitude 15.9877 ± 0.0092
Depth (km) 41 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124580121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 766
Semi-minor axis of confidence ellipse (meter) 431
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 188
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.80849
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 124580121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-11 14:29:27

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 116122181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-06 19:17:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AGLI.HHZ. 2023-04-06T18:09:19.76 3.0 undecidable manual Pg 16.290001 0
IV.ARVD.HHZ. 2023-04-06T18:09:11.14 3.0 undecidable manual Pg 14.69 0
IV.RIBO.EHZ.01 2023-04-06T18:09:00.96 3.0 undecidable manual Pn -0.43 0
IV.GUMA.HHZ. 2023-04-06T18:08:44.60 3.0 undecidable manual Pn -4.75 0
IV.VVLD.HHZ. 2023-04-06T18:08:37.56 3.0 negative manual Pg 4.01 0
IV.LPEL.HHZ. 2023-04-06T18:08:33.23 3.0 negative manual Pn 0.14 0
IV.OVO.HHZ. 2023-04-06T18:08:18.47 3.0 undecidable manual Pg 1.28 0
IV.CMDO.HHZ. 2023-04-06T18:08:15.24 3.0 negative manual Pg 0.01 0
IV.GRIS.HNE. 2023-04-06T18:08:06.57 0.6 undecidable manual S 353 89.7435 94 -0.26 44
IV.CELI.HHZ. 2023-04-06T18:08:02.14 0.6 undecidable manual S 41 68.2761 97 -0.09 48
IV.PLAC.HHZ. 2023-04-06T18:08:01.64 0.6 undecidable manual S 144 66.8775 98 -0.28 46
IV.CET2.HHZ. 2023-04-06T18:08:01.27 0.6 undecidable manual S 358 65.49 98 -0.37 45
IV.SERS.HHZ. 2023-04-06T18:08:01.12 0.6 undecidable manual S 80 61.3941 100 0.36 46
IV.SELL.HHZ. 2023-04-06T18:07:59.76 0.6 undecidable manual S 85 55.4001 103 0.25 48
IV.SPS2.HHE. 2023-04-06T18:07:58.00 0.6 undecidable manual S 38 49.4172 108 -0.26 48
IY.SPDC.HHN. 2023-04-06T18:07:57.64 0.6 undecidable manual S 165 47.4192 110 -0.21 48
IV.CAR1.HHZ. 2023-04-06T18:07:56.16 0.6 undecidable manual S 29 39.9267 119 -0.21 49
IV.GRIS.HNE. 2023-04-06T18:07:55.95 0.1 undecidable manual P 353 89.7435 94 0.36 86
XE.T0702.HHN. 2023-04-06T18:07:54.81 0.3 undecidable manual P 5 87.1461 94 -0.46 64
IV.CELI.HHZ. 2023-04-06T18:07:53.01 0.3 undecidable manual P 41 68.2761 97 0.08 72
IV.GIZZ.HHN. 2023-04-06T18:07:52.90 0.6 undecidable manual S 76 19.5693 146 -0.23 50
IV.SERS.HHZ. 2023-04-06T18:07:52.00 0.3 undecidable manual P 80 61.3941 100 -0.09 73
IV.PLAC.HHZ. 2023-04-06T18:07:52.64 0.3 undecidable manual P 144 66.8775 98 -0.12 71
IV.CET2.HHZ. 2023-04-06T18:07:52.84 0.1 undecidable manual P 358 65.49 98 0.25 93
IV.SELL.HHZ. 2023-04-06T18:07:51.27 0.3 undecidable manual P 85 55.4001 103 -0.09 73
IY.SPDC.HHN. 2023-04-06T18:07:50.56 0.3 undecidable manual P 165 47.4192 110 0.16 74
IV.SPS2.HHE. 2023-04-06T18:07:50.78 0.3 undecidable manual P 38 49.4172 108 0.14 74
IV.CAR1.HHZ. 2023-04-06T18:07:49.69 0.1 undecidable manual P 29 39.9267 119 0.14 100
IV.GIZZ.HHN. 2023-04-06T18:07:47.91 0.3 undecidable manual P 76 19.5693 146 0.23 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CET2.HHE. ML:1.6 0.000064170375 1.0272 AML other m 2023-04-06T18:07:54.91
IV.CELI.HHE. ML:1.4 0.00003988975 1.2096 AML other m 2023-04-06T18:07:55.26
IV.CAR1.HHN. ML:1.7 0.0001045 0.5 AML other m 2023-04-06T18:07:56.28
IV.CAR1.HHE. ML:1.6 0.00009745000000000001 0.46 AML other m 2023-04-06T18:07:56.32
IV.CELI.HHN. ML:1.4 0.000041274895 0.144 AML other m 2023-04-06T18:07:59.49
IV.SERS.HHE. ML:1.4 0.00003396478 0.4544 AML other m 2023-04-06T18:08:00.77
IV.SERS.HHN. ML:1.0 0.00001616565 0.848 AML other m 2023-04-06T18:08:01.10
IV.PLAC.HHN. ML:1.1 0.00002016835 0.64 AML other m 2023-04-06T18:08:03.37
IV.PLAC.HHE. ML:1.8 0.00009014747000000001 1.1648 AML other m 2023-04-06T18:08:06.10
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