Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 23-04-2020 and time 02:33:28 (UTC) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML 1.2 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 23-04-2020 02:33:28 (UTC)
  • 23-04-2020 04:33:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.4600, 15.8250 at 10 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
Gioia Tauro RC 7 19864 19864
San Ferdinando RC 8 4490 24354
Palmi RC 12 18930 43284
Rizziconi RC 13 7829 51113
Nicotera VV 13 6290 57403
Seminara RC 14 2811 60214
Rosarno RC 14 14841 75055
Joppolo VV 15 1926 76981
Limbadi VV 16 3695 80676
Melicuccà RC 18 930 81606
Ricadi VV 19 4900 86506
Bagnara Calabra RC 20 10255 96761

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NE of Messina (238439 inhabitants)
42 Km NE of Reggio di Calabria (183035 inhabitants)
72 Km SW of Lamezia Terme (70714 inhabitants)
83 Km SW of Catanzaro (90612 inhabitants)
100 Km SW of Cosenza (67546 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 1.2 2020-04-23
02:33:28		 38.4597 15.8253 10 2020-07-18
21:08:40		 Bollettino Sismico Italiano INGV 80084251
Reviewed
Rev100 		ML 1.2 2020-04-23
02:33:28		 38.4648 15.8313 10 2020-07-17
13:14:45		 Sala Sismica INGV-Roma 78488771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-23 02:33:28 ± 0.1
Latitude 38.4597 ± 0.0045
Longitude 15.8253 ± 0.0080
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80084251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 750
Semi-minor axis of confidence ellipse (meter) 208
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 117
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.15468
Epicentral distance of station farthest from the epicenter (degree) 0.88583
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 80084251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-12 20:54:39

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 78488771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-23 02:39:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SERS.HNN. 2020-04-23T02:33:46.14 0.3 undecidable manual P 49 98.3238 50 0.76 52
IV.MPNC.HHZ. 2020-04-23T02:33:46.30 0.1 undecidable manual S 230 53.8017 50 0.51 84
IV.MTTG.HHZ. 2020-04-23T02:33:45.53 0.6 undecidable manual S 192 51.8037 50 0.29 44
IV.PLAC.HHE. 2020-04-23T02:33:45.94 0.6 undecidable manual S 91 53.3022 50 0.31 44
XK.SELL.HNE. 2020-04-23T02:33:45.09 0.6 undecidable manual P 50 90.5427 50 0.91 33
IV.SOI.EHZ. 2020-04-23T02:33:43.80 0.1 undecidable manual S 155 47.3193 50 -0.23 90
IV.MSRU.HHZ. 2020-04-23T02:33:40.60 0.1 undecidable manual S 232 35.1426 50 -0.18 93
IV.GMB.BHN. 2020-04-23T02:33:39.90 0.1 undecidable manual S 179 32.3454 50 -0.15 95
IV.GRI.EHN. 2020-04-23T02:33:39.52 0.3 undecidable manual P 52 65.3901 50 -0.78 55
IV.MPNC.HHZ. 2020-04-23T02:33:38.13 0.1 positive manual P 230 53.8017 50 -0.4 86
IV.MTTG.HHZ. 2020-04-23T02:33:38.30 0.1 undecidable manual P 192 51.8037 50 0.08 93
IV.PLAC.HHE. 2020-04-23T02:33:38.44 0.1 undecidable manual P 91 53.3022 50 0 94
MN.CEL.HHZ. 2020-04-23T02:33:37.20 0.1 undecidable manual S 165 22.9548 113 -0.03 99
IV.SOI.EHZ. 2020-04-23T02:33:37.25 0.1 undecidable manual P 155 47.3193 50 -0.27 90
IV.SICLA.EHZ. 2020-04-23T02:33:37.80 0.1 undecidable manual S 203 24.5532 111 0.05 98
IV.MSRU.HHZ. 2020-04-23T02:33:35.53 0.1 positive manual P 232 35.1426 50 -0.11 95
IV.JOPP.HNN. 2020-04-23T02:33:35.21 0.3 undecidable manual S 18 17.1717 119 -0.21 72
IV.GMB.BHN. 2020-04-23T02:33:35.24 0.1 negative manual P 179 32.3454 50 0.02 97
MN.CEL.HHZ. 2020-04-23T02:33:33.81 0.1 positive manual P 165 22.9548 113 0.22 95
IV.SICLA.EHZ. 2020-04-23T02:33:33.97 0.1 undecidable manual P 203 24.5532 111 0.08 97
IV.JOPP.HNN. 2020-04-23T02:33:32.54 0.1 undecidable manual P 18 17.1717 119 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HHN. ML:0.8 0.00004062249 0.1392 AML other m 2020-04-23T02:33:38.14
IV.SICLA.EHN. ML:1.3 0.000108429635 0.28 AML other m 2020-04-23T02:33:39.27
IV.SICLA.EHE. ML:1.3 0.00011190725 0.2208 AML other m 2020-04-23T02:33:39.41
IV.GMB.BHE. ML:1.8 0.0002635 1.32 AML other m 2020-04-23T02:33:40.96
MN.CEL.HHE. ML:0.9 0.000049536835 2.2608 AML other m 2020-04-23T02:33:39.26
IV.GMB.BHN. ML:1.7 0.00024585695 0.16 AML other m 2020-04-23T02:33:41.06
IV.MSRU.HHN. ML:1.3 0.00008123491 0.9392 AML other m 2020-04-23T02:33:43.20
IV.MSRU.HHE. ML:1.4 0.00008993353500000001 2.32 AML other m 2020-04-23T02:33:42.07
MN.CEL.HNE. ML:1.0 0.000062046966 0.72 AML other m 2020-04-23T02:33:43.86
MN.CEL.HNN. ML:1.0 0.000059928550000000004 0.5408 AML other m 2020-04-23T02:33:44.51
IV.SOI.EHN. ML:1.1 0.000036849999999999994 0.42 AML other m 2020-04-23T02:33:45.55
IV.MPNC.HHN. ML:1.5 0.0000740334 0.3408 AML other m 2020-04-23T02:33:46.68
IV.MPNC.HHE. ML:1.6 0.000088540895 0.4208 AML other m 2020-04-23T02:33:47.14
IV.SOI.EHE. ML:1.0 0.0000288 1.36 AML other m 2020-04-23T02:33:53.73
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