Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 28-04-2021 and time 01:43:03 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 2.4 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 27-04-2021 23:43:03 (UTC)
  • 28-04-2021 01:43:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.5780, 15.5450 at 155 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km N of Messina (238439 inhabitants)
53 Km N of Reggio di Calabria (183035 inhabitants)
81 Km SW of Lamezia Terme (70714 inhabitants)
98 Km W of Catanzaro (90612 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 2.4 2021-04-27
23:43:03		 38.578 15.5447 155 2021-07-12
16:55:10		 Bollettino Sismico Italiano INGV 89888451
Reviewed
Rev100 		ML 2.4 2021-04-27
23:43:03		 38.5412 15.5478 150 2021-04-27
23:51:02		 Sala Sismica INGV-Roma 89542331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-27 23:43:03 ± 0.19
Latitude 38.5780 ± 0.0090
Longitude 15.5447 ± 0.0173
Depth (km) 155 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89888451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1507
Semi-minor axis of confidence ellipse (meter) 806
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 122
Circular confidence region, given by single value of horizontal uncertainty (meter) 1510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.26800
Epicentral distance of station farthest from the epicenter (degree) 1.75727
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 89542331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-27 23:51:02

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 89888451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-12 00:49:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.CUC.HHE. 2021-04-27T23:43:54.59 0.6 undecidable manual S 8 158.8188 131 -0.09 38
IV.GRIS.HNE. 2021-04-27T23:43:50.80 0.6 undecidable manual S 12 131.6682 137 0.31 39
MN.TIP.HHN. 2021-04-27T23:43:49.84 0.6 undecidable manual S 57 124.2867 139 0.42 38
IV.CELI.HHZ. 2021-04-27T23:43:49.97 0.6 undecidable manual S 42 123.5874 139 0.64 36
IV.SERS.HNN. 2021-04-27T23:43:48.22 0.6 undecidable manual S 62 111.1998 142 0.59 37
IV.SPS2.HHZ. 2021-04-27T23:43:46.80 1.0 undecidable manual S 41 104.6175 144 0.02 22
IV.SOI.EHZ. 2021-04-27T23:43:42.80 0.6 undecidable manual S 141 71.4729 154 -0.25 45
IV.MTTG.HHZ. 2021-04-27T23:43:42.80 1.0 undecidable manual S 168 65.1903 156 0.33 22
IV.GIZZ.HHZ. 2021-04-27T23:43:42.80 0.3 undecidable manual S 52 72.6717 153 -0.36 66
IV.MILZ.HHZ. 2021-04-27T23:43:41.10 1.0 undecidable manual S 219 43.5231 163 0.27 24
IV.MSRU.HHZ. 2021-04-27T23:43:40.30 1.0 undecidable manual S 185 34.9428 166 -0.05 25
IV.JOPP.HHZ. 2021-04-27T23:43:40.20 0.6 undecidable manual S 84 29.748 168 0.1 50
MN.CEL.HHZ. 2021-04-27T23:43:40.70 1.0 undecidable manual S 139 46.5201 162 -0.32 23
IV.SICLA.EHE. 2021-04-27T23:43:39.90 1.0 undecidable manual S 157 38.628 165 -0.64 21
IV.CMPR.HHZ. 2021-04-27T23:43:36.43 0.3 undecidable manual P 354 194.1612 125 0.04 48
IV.MCEL.HHN. 2021-04-27T23:43:36.20 0.3 undecidable manual P 6 195.0603 125 -0.28 45
IV.RAFF.HHZ. 2021-04-27T23:43:36.48 0.3 undecidable manual P 215 182.484 127 1.25 34
IV.SIRI.HNE. 2021-04-27T23:43:34.60 0.3 undecidable manual P 9 180.0864 128 -0.39 48
IV.MGR.HHZ. 2021-04-27T23:43:34.56 0.3 undecidable manual P 0 172.9935 129 0.27 51
IV.PIPA.HHZ. 2021-04-27T23:43:32.05 0.1 undecidable manual P 47 148.74 133 0.03 80
MN.CUC.HHE. 2021-04-27T23:43:32.56 0.1 undecidable manual P 8 158.8188 131 -0.38 71
IV.LADO.EHZ. 2021-04-27T23:43:31.41 0.3 undecidable manual P 57 146.5422 134 -0.41 56
IV.HLNI.HHE. 2021-04-27T23:43:31.36 0.3 undecidable manual P 204 148.5402 133 -0.64 51
IV.CELI.HHZ. 2021-04-27T23:43:30.56 0.6 undecidable manual P 42 123.5874 139 0.71 35
IV.GRIS.HNE. 2021-04-27T23:43:30.23 0.6 undecidable manual P 12 131.6682 137 -0.3 39
IV.SERS.HNN. 2021-04-27T23:43:29.01 0.1 undecidable manual P 62 111.1998 142 0.14 85
MN.TIP.HHN. 2021-04-27T23:43:29.95 0.1 undecidable manual P 57 124.2867 139 0.05 84
IV.SELL.HHZ. 2021-04-27T23:43:28.64 0.1 undecidable manual P 64 103.9182 144 0.32 83
IV.MSFR.HHZ. 2021-04-27T23:43:28.87 0.3 undecidable manual P 234 102.6195 144 0.64 58
IV.SPS2.HHZ. 2021-04-27T23:43:28.26 0.1 undecidable manual P 41 104.6175 144 -0.12 87
IV.CET2.HHZ. 2021-04-27T23:43:28.81 0.3 undecidable manual P 18 111.1998 142 -0.06 65
IV.MCPD.HHE. 2021-04-27T23:43:27.21 1.0 undecidable manual P 235 87.1461 149 0.05 23
IV.AIO.HHE. 2021-04-27T23:43:26.71 1.0 undecidable manual P 202 72.5718 153 0.43 22
IV.SOI.EHZ. 2021-04-27T23:43:26.16 0.1 undecidable manual P 141 71.4729 154 -0.07 93
IV.PLAC.HHZ. 2021-04-27T23:43:26.68 0.1 negative manual P 100 78.8655 151 0.03 92
IV.GIZZ.HHZ. 2021-04-27T23:43:26.03 0.1 undecidable manual P 52 72.6717 153 -0.26 90
IV.MTTG.HHZ. 2021-04-27T23:43:26.15 0.1 undecidable manual P 168 65.1903 156 0.26 91
IV.NOV.HHZ. 2021-04-27T23:43:26.95 1.0 undecidable manual P 210 70.5738 154 0.78 19
IV.FERC.HNN. 2021-04-27T23:43:25.47 0.3 undecidable manual P 105 52.503 160 0.17 71
IV.IVPL.HHE. 2021-04-27T23:43:25.61 0.1 undecidable manual P 246 53.9016 160 0.25 93
IV.MPNC.HHE. 2021-04-27T23:43:25.08 0.1 undecidable manual P 199 50.7159 161 -0.14 95
IV.IVUG.HHE. 2021-04-27T23:43:25.42 0.6 undecidable manual P 248 52.503 160 0.12 48
MN.CEL.HHZ. 2021-04-27T23:43:24.92 0.1 undecidable manual P 139 46.5201 162 -0.13 96
IV.MSRU.HHZ. 2021-04-27T23:43:24.24 0.1 undecidable manual P 185 34.9428 166 -0.42 92
IV.JOPP.HHZ. 2021-04-27T23:43:24.42 0.1 undecidable manual P 84 29.748 168 -0.1 100
IV.MILZ.HHZ. 2021-04-27T23:43:24.78 0.3 undecidable manual P 219 43.5231 163 -0.17 72
IV.SICLA.EHE. 2021-04-27T23:43:24.39 0.1 undecidable manual P 157 38.628 165 -0.39 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHN. ML:2.3 0.0000965 0.16 AML other m 2021-04-27T23:43:41.08
IV.JOPP.HHE. ML:2.3 0.00010055 0.42 AML other m 2021-04-27T23:43:41.10
IV.MSRU.HHN. ML:2.3 0.0000883 0.78 AML other m 2021-04-27T23:43:41.50
IV.MSRU.HHE. ML:2.4 0.0001085 0.44 AML other m 2021-04-27T23:43:41.56
IV.MILZ.HHN. ML:2.8 0.000266 1.64 AML other m 2021-04-27T23:43:41.12
MN.CEL.HHN. ML:2.1 0.0000575 0.44 AML other m 2021-04-27T23:43:42.39
IV.MILZ.HHE. ML:2.8 0.00029299999999999997 1.6 AML other m 2021-04-27T23:43:42.98
MN.CEL.HHE. ML:2.1 0.0000622 1.2 AML other m 2021-04-27T23:43:43.82
IV.SPS2.HHN. ML:2.1 0.000039093475 0.4992 AML other m 2021-04-27T23:43:47.81
IV.SPS2.HHE. ML:1.9 0.00002324022 1.7408 AML other m 2021-04-27T23:43:47.60
IV.CET2.HHN. ML:2.6 0.00014276195 0.2432 AML other m 2021-04-27T23:43:48.42
IV.CET2.HHE. ML:2.6 0.0001455 1.12 AML other m 2021-04-27T23:43:48.17
IV.PIPA.HHE. ML:2.5 0.00008535000000000001 0.8 AML other m 2021-04-27T23:43:57.49
IV.PIPA.HHN. ML:2.3 0.0000494 0.42 AML other m 2021-04-27T23:44:20.34
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