Earthquake with magnitude of ML 2.6 on date 20-08-2021 and time 09:01:43 (UTC) in region Isole Eolie (Messina)

A magnitude ML 2.6 earthquake occured in region: Isole Eolie (Messina), on

  • 20-08-2021 09:01:43 (UTC)
  • 20-08-2021 11:01:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.731, 14.963 at 288 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
79 Km NW of Messina (238439 inhabitants)
91 Km NW of Reggio di Calabria (183035 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.6 2021-08-20
09:01:43
38.7308 14.9633 288 2021-12-29
11:12:34
Bollettino Sismico Italiano INGV 96054091
Reviewed
Rev100
ML 2.7 2021-08-20
09:01:44
38.7367 14.9483 285 2021-08-20
09:41:43
Sala Sismica INGV-Roma 94409361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-20 09:01:43 ± 0.36
Latitude 38.7308 ± 0.0324
Longitude 14.9633 ± 0.0369
Depth (km) 288 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96054091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4166
Semi-minor axis of confidence ellipse (meter) 1899
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 136
Circular confidence region, given by single value of horizontal uncertainty (meter) 4170
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.62238
Number of stations at which the event was observed 49
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:2.7

Field Value
Value 2.7
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 94409361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-20 09:41:43

ML:2.6

Field Value
Value 2.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 96054091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-04 17:39:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PESA.HHZ. 2021-08-20T09:04:57.01 3.0 undecidable manual Sg 25.24 0
IV.COR1.EHZ. 2021-08-20T09:04:37.86 3.0 undecidable manual Sg 14.14 0
IV.EUCT.HNZ. 2021-08-20T09:04:27.83 3.0 undecidable manual Pg 26.08 0
IV.APEC.HHZ. 2021-08-20T09:04:23.78 3.0 undecidable manual Sn -2.42 0
IV.TOLF.HHZ. 2021-08-20T09:04:15.28 3.0 undecidable manual Sg 15.92 0
IV.ARVD.HHZ. 2021-08-20T09:04:12.50 3.0 undecidable manual Sn -8.59 0
IV.TERO.HHZ. 2021-08-20T09:04:11.93 3.0 undecidable manual Sg 14.94 0
GU.MGRO.HHZ. 2021-08-20T09:04:01.31 3.0 undecidable manual Pn 2.06 0
AC.VLO.HHZ. 2021-08-20T09:04:00.32 3.0 undecidable manual Sg 16.82 0
IV.ZEN8.EHZ. 2021-08-20T09:03:59.31 3.0 undecidable manual Pn 1.02 0
SL.KOGS.BHZ. 2021-08-20T09:03:56.27 3.0 undecidable manual Pn -2.15 0
IV.ZCCA.HHZ. 2021-08-20T09:03:54.40 3.0 undecidable manual Pg 12.58 0
IV.VIVA.HHZ. 2021-08-20T09:03:54.61 3.0 undecidable manual Sg 9.69 0
GU.GRAM.HHZ. 2021-08-20T09:03:44.83 3.0 positive manual Pn -3.63 0
IV.VCEL.EHZ. 2021-08-20T09:03:43.04 3.0 undecidable manual Sn -7.33 0
IV.LRP.EHZ. 2021-08-20T09:03:32.44 3.0 undecidable manual Sn -2.87 0
IV.TST01.HHZ. 2021-08-20T09:03:30.54 3.0 undecidable manual Sn -2.03 0
IV.TST02.HHZ. 2021-08-20T09:03:27.76 3.0 undecidable manual Sn -9.99 0
OT.OT16.EHZ. 2021-08-20T09:03:24.89 3.0 undecidable manual Sn -7.45 0
IV.AGLI.HHZ. 2021-08-20T09:03:22.27 3.0 undecidable manual Pn -3.34 0
IV.MF5.EHZ. 2021-08-20T09:03:14.88 3.0 undecidable manual Pn 0.72 0
IV.IFOR.HHZ. 2021-08-20T09:03:08.47 3.0 undecidable manual Sn -4.71 0
IV.CELI.HHZ. 2021-08-20T09:02:57.82 0.6 undecidable manual S 60 1.3742 151 0.84 37
IV.SERS.HHZ. 2021-08-20T09:02:56.80 0.3 undecidable manual S 77 1.376 151 -0.21 69
IV.PLAC.HHZ. 2021-08-20T09:02:54.20 0.3 undecidable manual S 103 1.1862 155 -0.73 62
IV.GRI.EHZ. 2021-08-20T09:02:54.70 0.6 undecidable manual S 85 1.1385 155 0.25 48
IV.SOI.EHZ. 2021-08-20T09:02:53.90 0.6 undecidable manual S 127 1.0774 157 0.04 51
IV.JOPP.HHZ. 2021-08-20T09:02:51.19 0.6 undecidable manual S 99 0.7302 164 0.16 53
IV.MSRU.HHZ. 2021-08-20T09:02:50.50 1.0 undecidable manual S 137 0.6322 166 0.08 28
IV.OVO.HHZ. 2021-08-20T09:02:48.64 3.0 undecidable manual Pg 5.28 0
IV.ICAI.EHZ. 2021-08-20T09:02:41.46 3.0 negative manual Pn -2.58 0
IV.CRAC.EHZ. 2021-08-20T09:02:40.74 3.0 undecidable manual Pg 2.91 0
IV.PIPA.HHZ. 2021-08-20T09:02:27.98 0.1 undecidable manual P 62 1.6224 147 0.18 80
MN.TIP.HHZ. 2021-08-20T09:02:26.69 0.3 undecidable manual P 72 1.465 150 0.04 67
IV.CELI.HHZ. 2021-08-20T09:02:26.58 0.3 undecidable manual P 60 1.3742 151 0.55 63
IV.SERS.HHZ. 2021-08-20T09:02:26.11 0.1 undecidable manual P 77 1.376 151 0.07 94
IV.CSLB.HHE. 2021-08-20T09:02:24.00 0.3 undecidable manual P 222 1.0639 157 -0.15 74
IV.EPZF.HHZ. 2021-08-20T09:02:24.85 0.6 undecidable manual P 185 0.9101 160 1.48 31
IV.GRI.EHZ. 2021-08-20T09:02:24.74 0.3 undecidable manual P 85 1.1385 155 0.17 73
IV.CET2.HHZ. 2021-08-20T09:02:24.03 0.3 undecidable manual P 44 1.1071 156 -0.36 71
IV.SOI.EHZ. 2021-08-20T09:02:24.32 0.3 undecidable manual P 127 1.0774 157 0.09 76
IV.GRIS.HNE. 2021-08-20T09:02:24.87 0.3 undecidable manual P 34 1.2213 154 -0.19 72
IV.PLAC.HHZ. 2021-08-20T09:02:24.63 0.1 undecidable manual P 103 1.1862 155 -0.21 96
IV.GIB.HHE. 2021-08-20T09:02:23.70 0.3 undecidable manual P 225 1.0432 157 -0.34 72
IV.NOV.HHZ. 2021-08-20T09:02:23.25 0.3 undecidable manual P 169 0.7159 164 0.71 70
IV.MTTG.HHZ. 2021-08-20T09:02:23.85 0.3 undecidable manual P 141 0.9281 160 0.39 74
IV.FERC.HNZ. 2021-08-20T09:02:23.51 0.3 undecidable manual P 107 0.9515 159 -0.06 78
IV.AIO.HHZ. 2021-08-20T09:02:23.29 0.1 undecidable manual P 164 0.7878 163 0.46 100
IV.JOPP.HHZ. 2021-08-20T09:02:22.11 0.1 undecidable manual P 99 0.7302 164 -0.49 100
IV.SICLA.EHZ. 2021-08-20T09:02:22.07 0.3 undecidable manual P 129 0.7554 163 -0.62 71
IV.IVUG.HHZ. 2021-08-20T09:02:21.57 0.3 undecidable manual P 177 0.3354 172 0.11 88
IV.IACL.HHE. 2021-08-20T09:02:21.89 0.3 undecidable manual P 248 0.5144 168 0.01 87
IV.IFIL.HHN. 2021-08-20T09:02:21.45 0.6 undecidable manual P 241 0.3453 172 -0.03 59
IV.MILZ.HHZ. 2021-08-20T09:02:21.42 0.3 undecidable manual P 155 0.5045 169 -0.43 79
IV.MSRU.HHZ. 2021-08-20T09:02:21.78 0.3 undecidable manual P 137 0.6322 166 -0.46 77
IV.IVPL.HNZ. 2021-08-20T09:02:21.63 0.3 undecidable manual P 178 0.3543 172 0.13 88
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HNE. ML:2.8 7.1595725E-5 1.3856 AML other m 2021-08-20T09:02:52.17
IV.JOPP.HNN. ML:2.7 5.826501E-5 0.6208 AML other m 2021-08-20T09:02:51.90
IV.EPIT.HHN. ML:3.2 0.00017695465 0.72 AML other m 2021-08-20T09:02:52.64
IV.JOPP.HHN. ML:2.4 3.6887775E-5 0.3392 AML other m 2021-08-20T09:02:53.45
IV.PLAC.HNE. ML:2.9 9.3778375E-5 1.5136 AML other m 2021-08-20T09:02:54.07
IV.PLAC.HHN. ML:0 3.3E-5 0.72 AML other m 2021-08-20T09:03:00.29
IV.PLAC.HNN. ML:3 0.00011867175 1.3184 AML other m 2021-08-20T09:02:55.09
IV.SPS2.HHN. ML:2.5 3.455E-5 1.7 AML other m 2021-08-20T09:02:55.89
IV.SPS2.HHE. ML:0 2.77E-5 1.62 AML other m 2021-08-20T09:02:56.16
IV.PLAC.HHE. ML:2 1.155368E-5 0.5248 AML other m 2021-08-20T09:02:56.61
IV.SELL.HHN. ML:0 2.405E-5 1.04 AML other m 2021-08-20T09:02:56.88
IV.SERS.HHN. ML:0 5.1563665E-5 0.5184 AML other m 2021-08-20T09:02:57.53
IV.SERS.HNN. ML:2.5 3.149075E-5 1.2768 AML other m 2021-08-20T09:02:57.15
IV.CELI.HHN. ML:2.6 3.83E-5 0.76 AML other m 2021-08-20T09:02:58.47
IV.SERS.HHE. ML:0 4.47E-5 1.52 AML other m 2021-08-20T09:02:58.12
IV.SELL.HHE. ML:0 3.23E-5 0.44 AML other m 2021-08-20T09:02:59.41
IV.CELI.HHE. ML:2.4 2.385E-5 0.54 AML other m 2021-08-20T09:03:00.36
MN.TIP.HHN. ML:2.6 3.301979E-5 0.4224 AML other m 2021-08-20T09:03:00.87
IV.EPIT.HHE. ML:0 0.00010268098 0.704 AML other m 2021-08-20T09:03:01.44
MN.TIP.HHE. ML:2.5 3.1719805E-5 0.6208 AML other m 2021-08-20T09:03:02.72
IV.ESCV.HHN. ML:0 0.000183 1.12 AML other m 2021-08-20T09:03:03.32
IV.ESCV.HHE. ML:0 0.0001265 1.04 AML other m 2021-08-20T09:03:05.11
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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