Istituto Nazionale di Geofisica e Vulcanologia

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) 38.2850, 14.8790 at 118 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Gioiosa Marea ME 13 7074 7074
Piraino ME 14 3962 11036
Brolo ME 15 5783 16819
Patti ME 18 13431 30250
Montagnareale ME 18 1615 31865
Capo d'Orlando ME 18 13254 45119
Sant'Angelo di Brolo ME 19 3090 48209
Naso ME 20 3813 52022
Ficarra ME 20 1469 53491

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km W of Messina (238439 inhabitants)
70 Km W of Reggio di Calabria (183035 inhabitants)
79 Km NW of Acireale (52622 inhabitants)
89 Km N of Catania (314555 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 2.1 2021-08-23
05:08:21		 38.2852 14.8787 118 2021-12-29
11:12:33		 Bollettino Sismico Italiano INGV 96025961
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 ± 0.2
Latitude 38.2852 ± 0.0135
Longitude 14.8787 ± 0.0160
Depth (km) 118 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96025961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1433
Semi-minor axis of confidence ellipse (meter) 1282
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 42
Circular confidence region, given by single value of horizontal uncertainty (meter) 1430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.12051
Epicentral distance of station farthest from the epicenter (degree) 1.23297
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 96025961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-29 10:24:09

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(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2021-08-23T05:09:04.05 0.6 undecidable manual S 82 136.863 127 0.17 0
IV.JOPP.HHZ. 2021-08-23T05:08:57.23 0.6 undecidable manual S 68 94.4388 138 0.15 4
IV.MSRU.HHZ. 2021-08-23T05:08:52.60 0.6 undecidable manual S 92 54.9006 153 0.41 46
IV.AIO.HHE. 2021-08-23T05:08:51.77 0.3 undecidable manual S 138 46.62 156 0.35 70
IV.EPZF.HHZ. 2021-08-23T05:08:51.36 0.6 undecidable manual S 182 51.2154 154 -0.48 45
IV.ECTS.HHZ. 2021-08-23T05:08:51.84 0.3 undecidable manual S 155 49.5171 155 0.16 73
IV.MPNC.HHZ. 2021-08-23T05:08:51.50 0.6 undecidable manual S 110 44.1225 158 0.29 48
IV.MILZ.HHE. 2021-08-23T05:08:50.16 0.3 undecidable manual S 93 30.747 164 -0.11 74
IV.MSFR.HHE. 2021-08-23T05:08:50.54 0.6 undecidable manual S 222 37.4292 161 -0.17 49
IV.MUCR.HHE. 2021-08-23T05:08:49.56 0.6 undecidable manual S 181 26.8509 166 -0.49 45
IV.MCPD.HHE. 2021-08-23T05:08:49.77 0.6 undecidable manual S 215 22.3554 168 -0.07 50
IV.IVPL.HHZ. 2021-08-23T05:08:49.71 0.3 undecidable manual S 41 13.3755 173 0.19 73
IV.PLAC.HHZ. 2021-08-23T05:08:46.28 0.3 undecidable manual P 82 136.863 127 0.45 0
IV.RAFF.HHZ. 2021-08-23T05:08:44.04 0.3 undecidable manual P 201 126.2736 129 -0.75 0
IV.JOPP.HHZ. 2021-08-23T05:08:42.04 0.6 undecidable manual P 68 94.4388 138 0.14 4
IV.HLNI.HHZ. 2021-08-23T05:08:41.65 0.6 undecidable manual P 180 103.9182 135 -1.06 0
IV.IST3.HHE. 2021-08-23T05:08:40.02 0.6 undecidable manual P 28 64.6908 149 0.34 47
IV.EPZF.HHZ. 2021-08-23T05:08:39.00 0.3 undecidable manual P 182 51.2154 154 0.12 74
IV.EPIT.HHN. 2021-08-23T05:08:39.43 0.6 undecidable manual P 163 54.8007 153 0.35 47
IV.IACL.HHE. 2021-08-23T05:08:39.12 0.1 positive manual P 301 53.2023 154 0.13 97
IV.EMNR.HHZ. 2021-08-23T05:08:39.46 0.6 undecidable manual P 166 53.502 153 0.46 46
IV.ECTS.HHZ. 2021-08-23T05:08:38.94 0.3 undecidable manual P 155 49.5171 155 0.15 73
IV.MSFR.HHE. 2021-08-23T05:08:38.33 0.6 undecidable manual P 222 37.4292 161 0.1 49
IV.MPNC.HHZ. 2021-08-23T05:08:38.17 0.3 undecidable manual P 110 44.1225 158 -0.35 70
IV.EMSG.HHZ. 2021-08-23T05:08:38.68 1.0 undecidable manual P 173 51.9036 154 -0.23 24
IV.MSRU.HHZ. 2021-08-23T05:08:38.62 0.1 undecidable manual P 92 54.9006 153 -0.46 91
IV.AIO.HHE. 2021-08-23T05:08:38.81 0.1 undecidable manual P 138 46.62 156 0.17 97
IV.IFIL.HHZ. 2021-08-23T05:08:38.59 0.3 undecidable manual P 320 40.626 159 0.23 72
IV.MILZ.HHE. 2021-08-23T05:08:37.53 0.1 undecidable manual P 93 30.747 164 -0.44 92
IV.MUCR.HHE. 2021-08-23T05:08:37.98 0.3 undecidable manual P 181 26.8509 166 0.13 73
IV.IVUG.HHZ. 2021-08-23T05:08:37.20 0.6 undecidable manual P 37 15.4734 172 -0.38 47
IV.IVPL.HHZ. 2021-08-23T05:08:37.50 0.1 positive manual P 41 13.3755 173 -0.04 100
IV.MCPD.HHE. 2021-08-23T05:08:37.42 0.3 undecidable manual P 215 22.3554 168 -0.3 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IFIL.HHE. ML:2.4 0.00017939025 0.2176 AML other m 2021-08-23T05:08:42.72
IV.IFIL.HHN. ML:2.2 0.00010960777000000001 0.2016 AML other m 2021-08-23T05:08:42.82
IV.MSRU.HHN. ML:2.1 0.000087726575 1.6224 AML other m 2021-08-23T05:08:52.94
IV.MSRU.HHE. ML:2.0 0.00006277144 0.4992 AML other m 2021-08-23T05:08:52.88
IV.EPZF.HHN. ML:2.3 0.00014000000000000001 0.9 AML other m 2021-08-23T05:08:55.07
IV.EPZF.HHE. ML:2.6 0.00026900000000000003 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.HLNI.HHN. ML:1.8 0.00003045001 1.5808 AML other m 2021-08-23T05:08:57.91
IV.HLNI.HHE. ML:1.6 0.000020641384999999998 0.4192 AML other m 2021-08-23T05:08:57.59
IV.JOPP.HNE. ML:2.1 0.00005968097 1.1712 AML other m 2021-08-23T05:08:58.31
IV.JOPP.HHN. ML:1.8 0.000031954705 0.3808 AML other m 2021-08-23T05:08:59.77
IV.RAFF.HHN. ML:1.9 0.000032142455 0.88 AML other m 2021-08-23T05:09:04.82
IV.PLAC.HHN. ML:2.0 0.000036464095 0.4192 AML other m 2021-08-23T05:09:05.53
IV.EMSG.HHE. ML:2.4 0.00015295795 0.56 AML other m 2021-08-23T05:09:06.02
IV.JOPP.HNN. ML:1.9 0.000040779074999999995 0.7104 AML other m 2021-08-23T05:09:06.82
IV.PLAC.HNE. ML:2.2 0.000055770135 0.4896 AML other m 2021-08-23T05:09:06.66
IV.PLAC.HHE. ML:1.7 0.000018957605 0.4384 AML other m 2021-08-23T05:09:08.70
IV.EMSG.HHN. ML:2.4 0.000183466 0.5408 AML other m 2021-08-23T05:09:09.42
IV.PLAC.HNN. ML:2.1 0.000046073274999999996 0.5216 AML other m 2021-08-23T05:09:34.40
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