Earthquake with magnitude of ML 2.1 on date 28-04-2021 and time 21:41:13 (UTC) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML 2.1 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 28-04-2021 21:41:13 (UTC)
  • 28-04-2021 23:41:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.835, 15.701 at 165 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.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km W of Lamezia Terme (70714 inhabitants)
70 Km SW of Cosenza (67546 inhabitants)
72 Km N of Messina (238439 inhabitants)
78 Km W of Catanzaro (90612 inhabitants)
81 Km N of Reggio di Calabria (183035 inhabitants)
Recent and historical seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.1 2021-04-28
21:41:13
38.8348 15.7007 165 2021-07-12
16:55:14
Bollettino Sismico Italiano INGV 91084711
Reviewed
Rev100
ML 2.3 2021-04-28
21:41:13
38.8265 15.6958 167 2021-04-28
21:52:28
Sala Sismica INGV-Roma 89567711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-28 21:41:13 ± 0.17
Latitude 38.8348 ± 0.0099
Longitude 15.7007 ± 0.0173
Depth (km) 165 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91084711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1559
Semi-minor axis of confidence ellipse (meter) 608
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 125
Circular confidence region, given by single value of horizontal uncertainty (meter) 1560
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 41
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
Epicentral distance of station farthest from the epicenter (degree) 1.49108
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 91084711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-11 10:17:48

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 89567711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-28 21:52:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CELI.HHZ. 2021-04-28T21:41:58.29 3.0 undecidable manual S 48 0.8454 149 1.02 0
MN.TIP.HHZ. 2021-04-28T21:41:57.90 1.0 undecidable manual S 67 0.8903 147 0.05 22
IV.MTTG.HHZ. 2021-04-28T21:41:57.81 1.0 undecidable manual S 180 0.831 149 0.72 18
IV.SELL.HHZ. 2021-04-28T21:41:56.70 0.6 undecidable manual S 78 0.7365 152 0.73 37
IV.SOI.EHN. 2021-04-28T21:41:56.37 0.6 undecidable manual S 160 0.8094 150 -0.47 41
IV.SERS.HHZ. 2021-04-28T21:41:56.90 0.3 undecidable manual S 75 0.7941 150 0.26 63
IV.MPNC.HHN. 2021-04-28T21:41:56.01 1.0 undecidable manual S 202 0.7401 152 0 23
IV.PLAC.HHZ. 2021-04-28T21:41:55.20 0.6 undecidable manual S 124 0.6925 153 -0.29 44
IV.SPS2.HHZ. 2021-04-28T21:41:55.53 0.6 undecidable manual S 47 0.6727 154 0.24 44
IV.MILZ.HHZ. 2021-04-28T21:41:55.59 0.3 undecidable manual S 213 0.6718 154 0.32 65
IV.CET2.HHZ. 2021-04-28T21:41:55.60 0.6 undecidable manual S 16 0.7213 153 -0.2 44
IV.MSRU.HHZ. 2021-04-28T21:41:54.40 0.3 undecidable manual S 195 0.59 157 -0.07 70
MN.CEL.HHZ. 2021-04-28T21:41:54.00 0.6 undecidable manual S 165 0.5936 157 -0.5 42
IV.GIZZ.HHZ. 2021-04-28T21:41:52.80 0.6 undecidable manual S 70 0.42 163 -0.28 46
IV.JOPP.HHZ. 2021-04-28T21:41:52.00 0.3 undecidable manual S 148 0.2698 169 -0.22 72
IV.MCEL.HHN. 2021-04-28T21:41:44.27 0.6 undecidable manual P 3 1.4911 132 -0.16 35
IV.MGR.HHZ. 2021-04-28T21:41:42.63 1.0 undecidable manual P 355 1.3067 136 0.03 20
IV.SIRI.HNE. 2021-04-28T21:41:42.83 1.0 undecidable manual P 5 1.3526 135 -0.21 19
IV.SALB.HHZ. 2021-04-28T21:41:41.45 0.6 undecidable manual P 25 1.1547 140 0.26 39
IV.EPIT.HHZ. 2021-04-28T21:41:41.21 3.0 positive manual Pn 0.27 0
MN.CUC.HHE. 2021-04-28T21:41:40.90 1.0 undecidable manual P 4 1.1619 140 -0.36 19
IV.LADO.EHZ. 2021-04-28T21:41:40.01 1.0 undecidable manual P 65 1.0891 142 -0.61 18
IV.NOV.HHZ. 2021-04-28T21:41:40.03 1.0 undecidable manual P 209 0.9191 146 0.8 18
IV.PIPA.HHZ. 2021-04-28T21:41:40.37 0.6 undecidable manual P 53 1.081 142 -0.18 40
IV.AIO.HHE. 2021-04-28T21:41:40.21 1.0 undecidable manual P 203 0.9371 146 0.83 17
IV.MTTG.HHZ. 2021-04-28T21:41:39.03 0.6 undecidable manual P 180 0.831 149 0.45 41
IV.GRIS.HNE. 2021-04-28T21:41:39.07 1.0 undecidable manual P 7 0.9128 146 -0.12 21
IV.CELI.HHZ. 2021-04-28T21:41:39.16 0.6 undecidable manual P 48 0.8454 149 0.47 40
IV.SELL.HHZ. 2021-04-28T21:41:38.16 0.6 undecidable manual P 78 0.7365 152 0.22 43
IV.MPNC.HHN. 2021-04-28T21:41:38.13 1.0 undecidable manual P 202 0.7401 152 0.17 22
MN.TIP.HHZ. 2021-04-28T21:41:38.90 0.6 undecidable manual P 67 0.8903 147 -0.12 43
IV.IVPL.HNE. 2021-04-28T21:41:38.24 1.0 undecidable manual P 231 0.7258 152 0.37 21
IV.SOI.EHN. 2021-04-28T21:41:38.43 0.6 undecidable manual P 160 0.8094 150 0 45
IV.SERS.HHZ. 2021-04-28T21:41:38.32 0.3 undecidable manual P 75 0.7941 150 0 67
IV.PLAC.HHZ. 2021-04-28T21:41:37.56 0.3 undecidable manual P 124 0.6925 153 -0.1 68
IV.SPS2.HHZ. 2021-04-28T21:41:37.72 0.6 undecidable manual P 47 0.6727 154 0.18 45
IV.MILZ.HHZ. 2021-04-28T21:41:37.52 0.3 undecidable manual P 213 0.6718 154 -0.01 69
IV.CET2.HHZ. 2021-04-28T21:41:37.68 0.3 undecidable manual P 16 0.7213 153 -0.16 66
IV.IVUG.HHZ. 2021-04-28T21:41:37.83 1.0 undecidable manual P 232 0.7096 153 0.06 23
IV.GIZZ.HHZ. 2021-04-28T21:41:36.07 0.3 undecidable manual P 70 0.42 163 -0.2 70
IV.MSRU.HHZ. 2021-04-28T21:41:36.87 0.3 undecidable manual P 195 0.59 157 -0.2 67
MN.CEL.HHZ. 2021-04-28T21:41:36.83 0.3 undecidable manual P 165 0.5936 157 -0.26 67
IV.JOPP.HHZ. 2021-04-28T21:41:35.77 0.1 positive manual P 148 0.2698 169 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHN. ML:2.2 6.465E-5 0.36 AML other m 2021-04-28T21:41:53.59
IV.JOPP.HHE. ML:2.1 5.11E-5 0.18 AML other m 2021-04-28T21:41:53.51
IV.MSRU.HHE. ML:2.5 0.000120287775 0.2048 AML other m 2021-04-28T21:41:55.96
IV.MILZ.HHE. ML:3 0.0003985 1.68 AML other m 2021-04-28T21:41:55.90
IV.MSRU.HHN. ML:2.4 9.5297935E-5 0.2048 AML other m 2021-04-28T21:41:55.96
IV.CET2.HHE. ML:2.5 0.000119757965 0.1408 AML other m 2021-04-28T21:41:56.55
MN.CEL.HHN. ML:2.2 5.555E-5 0.2 AML other m 2021-04-28T21:41:56.81
IV.CET2.HHN. ML:2.7 0.0001921249 0.192 AML other m 2021-04-28T21:41:56.86
IV.MILZ.HHN. ML:2.6 0.000140637 0.32 AML other m 2021-04-28T21:41:57.11
IV.PLAC.HHN. ML:2 3.6044675E-5 0.2304 AML other m 2021-04-28T21:41:56.73
IV.PLAC.HHE. ML:2 3.583451E-5 0.2176 AML other m 2021-04-28T21:41:56.66
MN.CEL.HHE. ML:2.2 6.55E-5 0.38 AML other m 2021-04-28T21:41:57.81
IV.SERS.HHE. ML:1.9 2.945E-5 0.6 AML other m 2021-04-28T21:41:57.87
MN.TIP.HHN. ML:1.9 2.42E-5 0.6 AML other m 2021-04-28T21:41:58.49
IV.SERS.HHN. ML:1.9 3.25E-5 0.66 AML other m 2021-04-28T21:41:58.21
MN.TIP.HHE. ML:1.8 1.8998598E-5 0.256 AML other m 2021-04-28T21:41:59.65
IV.CELI.HHE. ML:2 2.94E-5 0.66 AML other m 2021-04-28T21:42:00.39
IV.CELI.HHN. ML:1.9 2.705E-5 0.62 AML other m 2021-04-28T21:42:01.38
IV.LADO.EHN. ML:2.2 5.1014105E-5 0.3328 AML other m 2021-04-28T21:42:04.13
IV.LADO.EHE. ML:2.2 4.722493E-5 0.2944 AML other m 2021-04-28T21:42:05.63
IV.PIPA.HHE. ML:2.2 5.215E-5 0.58 AML other m 2021-04-28T21:42:04.60
OT.TAR1.HHN. ML:0 0.0001039 0.88 AML other m 2021-04-28T21:42:16.67
OT.TAR1.HHE. ML:0 4.865E-5 1.36 AML other m 2021-04-28T21:42:18.69
IV.NOCI.HHN. ML:0 0.00010135 0.22 AML other m 2021-04-28T21:42:19.30
IV.AMUR.HHN. ML:0 6.495E-5 0.28 AML other m 2021-04-28T21:42:19.44
IV.NOCI.HHE. ML:0 9.52E-5 0.64 AML other m 2021-04-28T21:42:19.30
IV.AMUR.HHE. ML:0 4.065E-5 0.86 AML other m 2021-04-28T21:42:21.67
IV.SELL.HHE. ML:1.6 1.438664E-5 0.3968 AML other m 2021-04-28T21:42:00.28
IV.SELL.HNE. ML:2.3 7.4817795E-5 0.8192 AML other m 2021-04-28T21:41:55.48
IV.SELL.HHN. ML:1.4 9.440964E-6 0.4864 AML other m 2021-04-28T21:41:58.93
MN.TIP.HNE. ML:2.3 6.5547485E-5 0.6784 AML other m 2021-04-28T21:42:00.97
IV.CELI.HNN. ML:2 3.2128275E-5 0.6016 AML other m 2021-04-28T21:42:02.30
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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