Earthquake with magnitude of ML 2.1 on date 23-08-2021 and time 05:08:21 (UTC) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 2.1 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 23-08-2021 05:08:21 (UTC)
  • 23-08-2021 07:08:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.23, 14.853 at 115 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
Gioiosa Marea ME 7 7074 7074
Piraino ME 8 3962 11036
Brolo ME 8 5783 16819
Capo d'Orlando ME 12 13254 30073
Naso ME 13 3813 33886
Sant'Angelo di Brolo ME 13 3090 36976
Ficarra ME 13 1469 38445
Montagnareale ME 14 1615 40060
Patti ME 14 13431 53491
Sinagra ME 16 2705 56196
Castell'Umberto ME 17 3128 59324
Librizzi ME 17 1660 60984
Mirto ME 18 974 61958
Capri Leone ME 19 4515 66473
San Salvatore di Fitalia ME 19 1319 67792
Frazzanò ME 20 711 68503
Raccuja ME 20 1041 69544

Municipalities with at least 50000 inhabitants

An earthquake occurred to
62 Km W of Messina (238439 inhabitants)
71 Km W of Reggio di Calabria (183035 inhabitants)
74 Km NW of Acireale (52622 inhabitants)
83 Km N of Catania (314555 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 2.1 2021-08-23
05:08:21
38.2298 14.8528 115 2021-08-23
05:23:08
Sala Sismica INGV-Roma 94526161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-23 05:08:21 ± 0.43
Latitude 38.2298 ± 0.0342
Longitude 14.8528 ± 0.0298
Depth (km) 115 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94526161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3629
Semi-minor axis of confidence ellipse (meter) 1258
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 167
Circular confidence region, given by single value of horizontal uncertainty (meter) 3630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.26175
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 23
Type of magnitude ML
Reference to an origin 94526161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-23 05:23:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.MUGIO.HHZ. 2021-08-23T05:10:52.92 3.0 undecidable manual Pg 41.07 0
IV.RIBO.EHZ.01 2021-08-23T05:10:28.43 3.0 undecidable manual Sn -0.68 0
ST.CARE.HNZ. 2021-08-23T05:10:25.32 3.0 undecidable manual Pn 14.48 0
IV.SACS.HHZ. 2021-08-23T05:10:19.45 3.0 undecidable manual Sn -0.19 0
SL.KOGS.BHZ. 2021-08-23T05:10:17.92 3.0 undecidable manual Pn 12.92 0
IV.VOBA.EHZ. 2021-08-23T05:10:11.56 3.0 negative manual Pn 9.63 0
IV.NRCA.HHZ. 2021-08-23T05:10:11.13 3.0 undecidable manual Sn -0.57 0
OT.OT13.EHZ. 2021-08-23T05:10:11.67 3.0 undecidable manual Sg 20.690001 0
IV.SALO.HHZ. 2021-08-23T05:10:08.44 3.0 undecidable manual Pn 6.89 0
IV.OSSC.HHZ. 2021-08-23T05:10:02.58 3.0 undecidable manual Pg 28.940001 0
MN.BLY.HHZ. 2021-08-23T05:09:58.80 3.0 negative manual Pn 13.91 0
IV.TST02.HHZ. 2021-08-23T05:09:56.42 3.0 undecidable manual Sn 7.51 0
IV.POFI.HHZ. 2021-08-23T05:09:53.12 3.0 undecidable manual Sn 7.89 0
IV.NARO.HHZ. 2021-08-23T05:09:51.15 3.0 negative manual Pg 21.620001 0
IV.TST01.HHZ. 2021-08-23T05:09:51.11 3.0 undecidable manual Sn 6.95 0
IV.CSNT.HHZ. 2021-08-23T05:09:43.92 3.0 undecidable manual Pn 11.07 0
IV.MTMR.EHZ. 2021-08-23T05:09:43.34 3.0 undecidable manual Sg 16.120001 0
IV.MIDA.HHZ. 2021-08-23T05:09:42.40 3.0 undecidable manual Sn 0.3 0
IV.RSM2.HHZ. 2021-08-23T05:09:42.55 3.0 positive manual Pn 8.55 0
IV.GAVE.EHZ. 2021-08-23T05:09:39.50 3.0 undecidable manual Pg 22.15 0
IV.HPAC.HHZ. 2021-08-23T05:09:21.52 3.0 undecidable manual Sg 1.92 0
IV.TST02.HHZ. 2021-08-23T05:09:11.28 3.0 undecidable manual Pn 5.64 0
IV.MIDA.HHZ. 2021-08-23T05:09:05.48 3.0 positive manual Pn 3.67 0
IV.PLAC.HHZ. 2021-08-23T05:09:04.94 0.6 undecidable manual S 79 1.2617 125 0.5 37
IV.JOPP.HHZ. 2021-08-23T05:08:57.23 0.6 undecidable manual S 65 0.8921 136 -0.44 41
IV.MSRU.HHZ. 2021-08-23T05:08:52.60 0.6 undecidable manual S 86 0.5153 151 0.35 45
IV.MPNC.HHZ. 2021-08-23T05:08:51.50 0.6 undecidable manual S 102 0.4011 157 0.45 45
IV.EPZF.HHZ. 2021-08-23T05:08:51.36 0.6 undecidable manual S 180 0.4056 157 0.27 47
IV.IVPL.HHZ. 2021-08-23T05:08:50.23 0.6 undecidable manual S 34 0.1772 169 0.74 43
IV.MUCR.HHE. 2021-08-23T05:08:49.21 0.6 undecidable manual S 175 0.188 169 -0.32 47
IV.MCPD.HHE. 2021-08-23T05:08:49.77 0.6 undecidable manual S 221 0.1457 171 0.41 48
IV.MILZ.HHE. 2021-08-23T05:08:49.87 0.6 undecidable manual S 82 0.2995 162 -0.33 46
IV.MSFR.HHE. 2021-08-23T05:08:49.20 0.6 undecidable manual S 226 0.2842 163 -0.89 37
IV.PLAC.HHZ. 2021-08-23T05:08:46.42 0.6 undecidable manual P 79 1.2617 125 0.11 39
IV.RAFF.HHZ. 2021-08-23T05:08:44.03 3.0 negative manual Pn -0.41 0
IV.JOPP.HHZ. 2021-08-23T05:08:42.04 0.6 undecidable manual P 65 0.8921 136 -0.35 42
IV.HLNI.HHZ. 2021-08-23T05:08:41.48 3.0 negative manual Pn -1.79 0
IV.IST3.HHE. 2021-08-23T05:08:40.99 0.1 undecidable manual P 27 0.6412 145 0.81 72
IV.EPZF.HHZ. 2021-08-23T05:08:39.45 0.3 positive manual P 180 0.4056 157 0.85 58
IV.IACL.HHE. 2021-08-23T05:08:39.08 0.1 undecidable manual P 308 0.4937 152 -0.04 97
IV.EMSG.HHZ. 2021-08-23T05:08:39.63 0.6 negative manual P 169 0.4155 156 0.98 36
IV.MSFR.HHE. 2021-08-23T05:08:38.57 0.1 undecidable manual P 226 0.2842 163 0.55 89
IV.MPNC.HHZ. 2021-08-23T05:08:38.17 0.3 undecidable manual P 102 0.4011 157 -0.41 68
IV.MSRU.HHZ. 2021-08-23T05:08:38.57 0.6 negative manual P 86 0.5153 151 -0.7 40
IV.IFIL.HHZ. 2021-08-23T05:08:38.62 0.3 positive manual P 327 0.3984 157 0.06 72
IV.MILZ.HHE. 2021-08-23T05:08:37.45 0.1 undecidable manual P 82 0.2995 162 -0.64 86
IV.IVPL.HHZ. 2021-08-23T05:08:37.50 0.1 positive manual P 34 0.1772 169 -0.17 100
IV.MUCR.HHE. 2021-08-23T05:08:37.06 0.1 undecidable manual P 175 0.188 169 -0.64 87
IV.MCPD.HHE. 2021-08-23T05:08:37.22 0.1 undecidable manual P 221 0.1457 171 -0.38 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IFIL.HHE. ML:2.4 0.0001917108 0.8992 AML other m 2021-08-23T05:09:11.69
IV.IFIL.HHN. ML:2.2 0.00010960777 0.2016 AML other m 2021-08-23T05:08:42.82
IV.EPZF.HHN. ML:2.3 0.00014 0.9 AML other m 2021-08-23T05:08:55.07
IV.EPZF.HHE. ML:2.6 0.000269 0.58 AML other m 2021-08-23T05:08:55.03
IV.MPNC.HHN. ML:2.2 0.00011350195 0.5216 AML other m 2021-08-23T05:08:55.32
IV.MPNC.HHE. ML:2.4 0.0001955 0.54 AML other m 2021-08-23T05:08:56.11
IV.TST02.HHN. ML:3.8 0.0003204197 0.1024 AML other m 2021-08-23T05:09:17.90
IV.TST02.HHE. ML:3.9 0.0003435 0.1 AML other m 2021-08-23T05:09:17.85
IV.MIDA.HHN. ML:2.8 4.1339685E-5 0.0384 AML other m 2021-08-23T05:09:21.11
IV.MIDA.HHE. ML:2.9 5.165E-5 1.26 AML other m 2021-08-23T05:09:21.15
IV.IVPL.HHE. ML:2.1 0.00010215935 1.3984 AML other m 2021-08-23T05:08:56.91
IV.MSRU.HHE. ML:2 6.912566E-5 1.0208 AML other m 2021-08-23T05:09:15.37
IV.MSRU.HHN. ML:2.1 8.7726575E-5 0.3776 AML other m 2021-08-23T05:08:52.94
IV.EMSG.HHN. ML:2.4 0.000183466 0.5408 AML other m 2021-08-23T05:09:09.42
IV.EMSG.HHE. ML:2.3 0.00015295795 0.56 AML other m 2021-08-23T05:09:06.02
IV.HLNI.HHN. ML:1.8 3.045001E-5 0.4192 AML other m 2021-08-23T05:08:56.91
IV.HLNI.HHE. ML:1.7 2.577664E-5 1.4208 AML other m 2021-08-23T05:09:32.01
IV.JOPP.HHE. ML:1.7 2.444033E-5 1.1392 AML other m 2021-08-23T05:08:44.20
IV.JOPP.HHN. ML:1.8 3.1954705E-5 0.3808 AML other m 2021-08-23T05:08:59.77
IV.JOPP.HNE. ML:2.1 6.430267E-5 1.3984 AML other m 2021-08-23T05:09:09.06
IV.JOPP.HNN. ML:2.1 6.73047E-5 1.888 AML other m 2021-08-23T05:09:06.02
IV.RAFF.HHE. ML:2 3.8313965E-5 2.08 AML other m 2021-08-23T05:09:24.97
IV.RAFF.HHN. ML:2 3.8851295E-5 1.6992 AML other m 2021-08-23T05:09:03.97
IV.PLAC.HNE. ML:2.2 5.5770135E-5 0.4896 AML other m 2021-08-23T05:09:06.66
IV.PLAC.HNN. ML:2.1 4.6073275E-5 4.5216 AML other m 2021-08-23T05:09:32.40
IV.PLAC.HHE. ML:1.7 1.8957605E-5 1.5616 AML other m 2021-08-23T05:09:08.70
IV.PLAC.HHN. ML:2 3.6464095E-5 0.4192 AML other m 2021-08-23T05:09:05.53
IV.MIDA.HNE. ML:4.1 0.00071124935 0.7616 AML other m 2021-08-23T05:09:52.77
IV.MIDA.HNN. ML:4.2 0.0009021114 3.3792 AML other m 2021-08-23T05:10:09.55
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