Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 28-04-2023 and time 12:50:01 (Italy) in region 1 km NW Villapiana (CS)

A magnitude ML 1.1 earthquake occured in region: 1 km NW Villapiana (CS), on

  • 28-04-2023 10:50:01 (UTC)
  • 28-04-2023 12:50:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.8570, 16.4440 at 18 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Villapiana CS 1 5387 5387
Plataci CS 5 739 6126
Cerchiara di Calabria CS 5 2385 8511
Francavilla Marittima CS 6 2910 11421
Trebisacce CS 8 9055 20476
Albidona CS 8 1352 21828
San Lorenzo Bellizzi CS 11 644 22472
Civita CS 12 902 23374
Alessandria del Carretto CS 13 462 23836
Cassano all'Ionio CS 13 18495 42331
Castroregio CS 16 303 42634
Frascineto CS 16 2154 44788
Amendolara CS 16 2952 47740
Terranova di Pollino PZ 18 1208 48948
Roseto Capo Spulico CS 20 1941 50889

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km N of Cosenza (67546 inhabitants)
91 Km S of Matera (60436 inhabitants)
96 Km SW of Taranto (201100 inhabitants)
99 Km N of Lamezia Terme (70714 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 1.1 2023-04-28
10:50:01		 39.8567 16.4445 18 2024-03-01
17:18:08		 Bollettino Sismico Italiano INGV 117424251
Reviewed
Rev100 		ML 1.3 2023-04-28
10:50:01		 39.849 16.4723 15 2023-04-28
11:12:09		 Sala Sismica INGV-Roma 116834301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-28 10:50:01 ± 0.1
Latitude 39.8567 ± 0.0036
Longitude 16.4445 ± 0.0070
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117424251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 638
Semi-minor axis of confidence ellipse (meter) 79
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.67809
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 117424251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-29 12:03:52

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 116834301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-28 11:12:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHZ. 2023-04-28T10:52:10.65 3.0 undecidable manual Sg 16.51 0
NI.VINO.HHZ. 2023-04-28T10:52:00.53 3.0 negative manual Pg 19.280001 0
RD.PGF.BHZ. 2023-04-28T10:51:50.12 3.0 undecidable manual Pg 16.450001 0
IV.PII.HHZ. 2023-04-28T10:51:45.11 3.0 negative manual Pg 16.360001 0
IV.BRSN.HNZ. 2023-04-28T10:51:39.07 3.0 undecidable manual Pg 15.7 0
IV.CSNT.HHZ. 2023-04-28T10:51:26.30 3.0 negative manual Pn 5.61 0
IV.VCEL.EHZ. 2023-04-28T10:51:25.46 3.0 undecidable manual Sn -6.39 0
IV.RESU.HHZ. 2023-04-28T10:51:22.17 3.0 undecidable manual Sn -0.7 0
IV.SNTG.HHZ. 2023-04-28T10:51:20.57 3.0 undecidable manual Pg 13.58 0
IV.MURB.HNZ. 2023-04-28T10:51:09.36 3.0 undecidable manual Pn -0.44 0
IV.PAOL.HHZ. 2023-04-28T10:50:59.07 3.0 undecidable manual Sg 0.29 0
IV.MSRU.HHZ. 2023-04-28T10:50:34.17 3.0 positive manual Pg 3.03 0
IV.SCHR.EHZ. 2023-04-28T10:50:17.48 0.3 undecidable manual S 321 49.2174 101 0.2 70
IV.CELI.HHE. 2023-04-28T10:50:17.52 0.3 undecidable manual S 174 50.7159 100 -0.14 70
IV.MCEL.HHZ. 2023-04-28T10:50:14.32 0.1 undecidable manual P 314 75.2691 96 -0.28 87
XE.T0701.HNN. 2023-04-28T10:50:12.80 0.3 undecidable manual S 297 31.4463 109 0.12 73
IV.TDS.HHZ. 2023-04-28T10:50:11.00 0.3 undecidable manual S 203 23.6541 117 0.23 72
IV.PIPA.HHZ. 2023-04-28T10:50:11.33 0.1 undecidable manual P 142 52.0035 100 0.29 91
IV.SCHR.EHZ. 2023-04-28T10:50:10.90 0.3 undecidable manual P 321 49.2174 101 0.28 69
IV.CELI.HHE. 2023-04-28T10:50:10.75 0.3 undecidable manual P 174 50.7159 100 -0.09 71
IV.ORI.HHZ. 2023-04-28T10:50:10.60 0.3 undecidable manual S 1 21.5673 120 0.32 71
XE.FRASC.HNE. 2023-04-28T10:50:09.20 0.3 undecidable manual S 262 15.2736 132 0.26 73
XE.TNOVA.HNE. 2023-04-28T10:50:09.90 0.6 undecidable manual S 310 20.3685 122 -0.11 50
XE.BIDON.HHZ. 2023-04-28T10:50:08.10 0.3 undecidable manual S 6 9.879 146 0.11 75
XE.T0702.HHN. 2023-04-28T10:50:08.45 0.1 undecidable manual P 244 34.2435 107 0.07 99
IV.SALB.HHZ. 2023-04-28T10:50:07.50 0.6 undecidable manual S 285 8.6802 150 -0.31 49
XE.T0701.HNN. 2023-04-28T10:50:07.92 0.1 undecidable manual P 297 31.4463 109 -0.04 99
IV.ORI.HHZ. 2023-04-28T10:50:06.56 0.3 undecidable manual P 1 21.5673 120 -0.02 76
IV.TDS.HHZ. 2023-04-28T10:50:06.79 0.1 undecidable manual P 203 23.6541 117 -0.07 100
XE.TNOVA.HNE. 2023-04-28T10:50:06.19 0.1 undecidable manual P 310 20.3685 122 -0.23 97
XE.FRASC.HNE. 2023-04-28T10:50:05.69 0.3 undecidable manual P 262 15.2736 132 -0.11 76
XE.BIDON.HHZ. 2023-04-28T10:50:04.92 0.1 undecidable manual P 6 9.879 146 -0.33 98
IV.SALB.HHZ. 2023-04-28T10:50:04.92 0.6 undecidable manual P 285 8.6802 150 -0.23 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SALB.HHN. ML:1.6 0.0003755 0.14 AML other m 2023-04-28T10:50:07.67
IV.SALB.HHE. ML:1.6 0.000379 0.26 AML other m 2023-04-28T10:50:07.65
IV.ORI.HHN. ML:1.5 0.00017468545 0.416 AML other m 2023-04-28T10:50:11.06
IV.ORI.HHE. ML:1.7 0.00026652995 0.416 AML other m 2023-04-28T10:50:11.10
IV.TDS.HHN. ML:0.6 0.00002057192 0.96 AML other m 2023-04-28T10:50:11.58
IV.TDS.HHE. ML:0.7 0.00002395 0.9 AML other m 2023-04-28T10:50:11.32
IV.SCHR.EHE. ML:0.8 0.000014550609999999998 4.4992 AML other m 2023-04-28T10:50:18.77
IV.SCHR.EHN. ML:0.8 0.000015900895 2.3168 AML other m 2023-04-28T10:50:18.17
IV.SPS2.HHN. ML:1.0 0.0000212 0.62 AML other m 2023-04-28T10:50:18.30
IV.SPS2.HHE. ML:1.1 0.00002705 1.7 AML other m 2023-04-28T10:50:23.94
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