Earthquake with magnitude of ML 2.3 on date 05-08-2021 and time 09:46:41 (UTC) in region Stretto di Messina (Reggio di Calabria, Messina)

A magnitude ML 2.3 earthquake occured in region: Stretto di Messina (Reggio di Calabria, Messina), on

  • 05-08-2021 09:46:41 (UTC)
  • 05-08-2021 11:46:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.89, 15.688 at 32 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Roghudi RC 8 1104 1104
Melito di Porto Salvo RC 9 11355 12459
Montebello Ionico RC 12 6214 18673
Motta San Giovanni RC 13 6208 24881
San Lorenzo RC 19 2640 27521
Bagaladi RC 19 1039 28560
Condofuri RC 20 5113 33673

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km S of Reggio di Calabria (183035 inhabitants)
36 Km SE of Messina (238439 inhabitants)
55 Km NE of Acireale (52622 inhabitants)
68 Km NE of Catania (314555 inhabitants)
99 Km NE of Siracusa (122291 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

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
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
Reviewed
Rev100
ML 2.3 2021-08-05
09:46:41
37.8898 15.6883 32 2021-08-05
09:57:08
Sala Sismica INGV-Roma 93710161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-05 09:46:41 ± 0.18
Latitude 37.8898 ± 0.0081
Longitude 15.6883 ± 0.0068
Depth (km) 32 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93710161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 761
Semi-minor axis of confidence ellipse (meter) 465
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 6
Circular confidence region, given by single value of horizontal uncertainty (meter) 760
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 198
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.87594
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 15
Magnitude information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 93710161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-05 09:57:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VCEL.EHZ. 2021-08-05T09:48:41.84 3.0 undecidable manual Sn -5.07 0
IV.LRP.EHZ. 2021-08-05T09:48:39.47 3.0 undecidable manual Sg 7.96 0
IV.FIU.EHZ. 2021-08-05T09:48:33.50 3.0 negative manual Pn 3.52 0
IV.NDIM.HNZ. 2021-08-05T09:48:31.26 3.0 undecidable manual Pn -4.44 0
IV.POFI.HHZ. 2021-08-05T09:48:29.65 3.0 undecidable manual Sn -2.54 0
IV.BSSO.HHZ. 2021-08-05T09:48:26.26 3.0 undecidable manual Sg 2.97 0
IV.PTRJ.HHZ. 2021-08-05T09:48:22.19 3.0 undecidable manual Sg 2.94 0
IV.SACS.HHZ. 2021-08-05T09:48:21.49 3.0 undecidable manual Pg 15.04 0
IV.AGLI.HHZ. 2021-08-05T09:48:04.46 3.0 positive manual Pn -5.96 0
IV.RM33.EHZ. 2021-08-05T09:47:55.97 3.0 undecidable manual Pn -0.22 0
IV.CRJA.HHZ. 2021-08-05T09:47:47.97 3.0 undecidable manual Sg 1.15 0
IV.PTRJ.HHZ. 2021-08-05T09:47:46.52 3.0 undecidable manual Pg 9.57 0
IT.PLTA.HNZ. 2021-08-05T09:47:39.86 3.0 undecidable manual Pn -3.54 0
IV.MMN.HHZ. 2021-08-05T09:47:36.79 3.0 undecidable manual Sg -4.65 0
IX.COL3.HHZ.02 2021-08-05T09:47:26.23 3.0 negative manual Pn -0.15 0
IV.GRIS.EHZ. 2021-08-05T09:47:11.34 3.0 negative manual Pn -2.12 0
IV.MCPD.HHZ. 2021-08-05T09:47:09.20 0.6 undecidable manual S 287 0.7878 106 1.31 27
IV.HVIT.HHZ. 2021-08-05T09:47:06.63 3.0 positive manual P -2.53 0
IV.PETRA.HHZ. 2021-08-05T09:47:04.10 3.0 positive manual P -2.65 0
IV.MILZ.HHZ. 2021-08-05T09:47:00.64 0.1 undecidable manual S 317 0.5243 114 0.14 91
IV.GALF.HHZ. 2021-08-05T09:46:58.63 3.0 negative manual P -2.79 0
IV.NOV.HHZ. 2021-08-05T09:46:58.28 0.3 undecidable manual S 288 0.456 118 -0.41 65
IV.MPNC.HHZ. 2021-08-05T09:46:57.10 0.3 undecidable manual S 314 0.3678 124 0.65 61
IV.PLAC.HHZ. 2021-08-05T09:46:57.51 3.0 positive manual P -1.58 0
IV.MSRU.HHZ. 2021-08-05T09:46:57.11 0.6 undecidable manual S 339 0.3993 121 -0.12 46
IV.MSFR.HHZ. 2021-08-05T09:46:57.93 0.1 undecidable manual P 280 0.8759 104 -0.17 84
IV.MCPD.HHZ. 2021-08-05T09:46:56.53 0.3 undecidable manual P 287 0.7878 106 -0.12 65
IV.AIO.HHZ. 2021-08-05T09:46:56.00 0.3 undecidable manual S 283 0.3678 124 -0.44 66
IV.SOI.EHZ. 2021-08-05T09:46:56.09 0.3 undecidable manual S 57 0.3417 126 0.29 68
IV.SICLA.EHZ. 2021-08-05T09:46:56.30 0.1 undecidable manual S 3 0.3669 124 -0.11 93
IV.JOPP.HHE. 2021-08-05T09:46:55.56 0.3 undecidable manual P 12 0.7329 107 -0.18 64
IV.FERC.HNE. 2021-08-05T09:46:54.91 0.3 undecidable manual P 31 0.6601 109 0.35 63
IV.EPIT.HHZ. 2021-08-05T09:46:52.54 0.1 undecidable manual P 261 0.5045 115 0.45 84
IV.MILZ.HHZ. 2021-08-05T09:46:52.28 0.3 undecidable manual P 317 0.5243 114 -0.11 68
IV.NOV.HHZ. 2021-08-05T09:46:51.20 0.1 undecidable manual P 288 0.456 118 -0.14 92
IV.MTTG.HHZ. 2021-08-05T09:46:51.49 0.1 undecidable manual S 5 0.1133 157 0.04 100
IV.ECTS.HHZ. 2021-08-05T09:46:51.28 0.1 undecidable manual P 269 0.4479 118 0.07 93
IV.EFIU.HHZ. 2021-08-05T09:46:50.54 0.3 undecidable manual P 255 0.3903 122 0.17 69
IV.AIO.HHZ. 2021-08-05T09:46:50.00 0.1 undecidable manual P 283 0.3678 124 -0.04 96
IV.MSRU.HHZ. 2021-08-05T09:46:50.31 0.1 undecidable manual P 339 0.3993 121 -0.19 92
IV.SICLA.EHZ. 2021-08-05T09:46:49.86 0.1 undecidable manual P 3 0.3669 124 -0.17 93
IV.MPNC.HHZ. 2021-08-05T09:46:49.82 0.1 undecidable manual P 314 0.3678 124 -0.22 92
IV.SOI.EHZ. 2021-08-05T09:46:49.74 0.1 undecidable manual P 57 0.3417 126 0.07 95
IV.MTTG.HHZ. 2021-08-05T09:46:47.08 0.1 undecidable manual P 5 0.1133 157 -0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTTG.HHE. ML:2.5 0.0014465 0.48 AML other m 2021-08-05T09:46:51.97
IV.MTTG.HHN. ML:2.5 0.00143 0.48 AML other m 2021-08-05T09:46:52.15
IV.AIO.HHE. ML:2.2 0.0004295 0.68 AML other m 2021-08-05T09:46:56.46
IV.SICLA.EHN. ML:2.4 0.000711 1.06 AML other m 2021-08-05T09:46:57.62
IV.SOI.EHE. ML:1.9 0.000221 0.48 AML other m 2021-08-05T09:46:57.51
IV.AIO.HHN. ML:2.1 0.000345 0.4 AML other m 2021-08-05T09:46:57.47
IV.SOI.EHN. ML:1.8 0.0001895 1.14 AML other m 2021-08-05T09:46:57.29
IV.SICLA.EHE. ML:2.4 0.000654 0.6 AML other m 2021-08-05T09:46:57.65
IV.MPNC.HHE. ML:2.5 0.000868 0.54 AML other m 2021-08-05T09:46:57.61
IV.MPNC.HHN. ML:2.5 0.000772 0.6 AML other m 2021-08-05T09:46:58.89
IV.NOV.HHE. ML:2.8 0.001245 0.88 AML other m 2021-08-05T09:46:59.01
IV.MSRU.HHE. ML:2.2 0.000359 0.26 AML other m 2021-08-05T09:46:59.84
IV.MSRU.HHN. ML:2.1 0.0002775 0.44 AML other m 2021-08-05T09:47:00.15
IV.NOV.HHN. ML:2.9 0.001615 0.58 AML other m 2021-08-05T09:47:00.48
IV.EPIT.HHE. ML:2.5 0.000572 0.72 AML other m 2021-08-05T09:47:07.24
IV.EPIT.HHN. ML:2.5 0.0005655 0.94 AML other m 2021-08-05T09:47:08.69
IV.GALF.HHN. ML:2.7 0.0004235 0.42 AML other m 2021-08-05T09:47:13.60
IV.GALF.HHE. ML:2.5 0.0002845 1.18 AML other m 2021-08-05T09:47:14.69
IV.PLAC.HHN. ML:2.2 0.0001545 1.28 AML other m 2021-08-05T09:47:15.64
IV.PLAC.HHE. ML:1.8 7.663776E-5 1.4592 AML other m 2021-08-05T09:47:29.90
IV.MCPD.HHE. ML:2.1 0.00013632065 0.4032 AML other m 2021-08-05T09:47:10.26
IV.PLAC.HNE. ML:2.2 0.0001687938 0.5504 AML other m 2021-08-05T09:47:11.59
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