Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 04-04-2021 and time 23:33:20 (UTC) in region Isole Eolie (Messina)

A magnitude ML 2.5 earthquake occured in region: Isole Eolie (Messina), on

  • 04-04-2021 23:33:20 (UTC)
  • 05-04-2021 01:33:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.3370, 15.0020 at 158 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
Lipari ME 15 12753 12753

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km W of Messina (238439 inhabitants)
62 Km W of Reggio di Calabria (183035 inhabitants)
82 Km N of Acireale (52622 inhabitants)
93 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 2.5 2021-04-04
23:33:20		 38.3368 15.0018 158 2021-07-12
16:55:13		 Bollettino Sismico Italiano INGV 90644991
Reviewed
Rev100 		ML 2.4 2021-04-04
23:33:20		 38.3072 14.9583 158 2021-04-04
23:52:56		 Sala Sismica INGV-Roma 88777711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-04 23:33:20 ± 0.37
Latitude 38.3368 ± 0.0342
Longitude 15.0018 ± 0.0298
Depth (km) 158 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90644991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3998
Semi-minor axis of confidence ellipse (meter) 1258
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 155
Circular confidence region, given by single value of horizontal uncertainty (meter) 4000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
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) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 1.49018
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:2.5

Field Value
Value 2.5
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 90644991
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-31 01:29:12

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 88777711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-04 23:52:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2021-04-04T23:34:08.17 0.6 undecidable manual S 55 126.4734 139 0.86 32
IV.PLAC.HHZ. 2021-04-04T23:34:07.59 0.3 undecidable manual S 84 125.4744 139 0.42 58
IV.FERC.HNN. 2021-04-04T23:34:04.09 0.6 undecidable manual S 82 98.7234 146 0.43 40
IV.SOI.EHZ. 2021-04-04T23:34:03.44 0.6 undecidable manual S 107 96.3258 147 0.07 44
IV.JOPP.HHZ. 2021-04-04T23:34:02.22 0.6 undecidable manual S 68 82.3509 151 0.41 42
IV.AIO.HHZ. 2021-04-04T23:34:00.09 0.6 undecidable manual S 153 45.3213 163 1.45 28
IV.SICLA.EHN. 2021-04-04T23:33:59.62 0.6 undecidable manual S 98 62.6928 157 -0.31 44
IV.MPNC.HHZ. 2021-04-04T23:33:58.14 0.6 undecidable manual S 125 37.1295 166 -0.03 49
IV.IVPL.HHZ. 2021-04-04T23:33:57.54 0.3 undecidable manual S 337 4.7952 178 0.34 72
IV.MSRU.HHZ. 2021-04-04T23:33:57.77 0.6 undecidable manual S 100 44.8218 163 -0.84 38
IV.MILZ.HHZ. 2021-04-04T23:33:56.55 0.6 undecidable manual S 110 21.2676 172 -0.96 38
IV.IVGP.HHZ. 2021-04-04T23:33:56.81 0.6 undecidable manual S 332 7.5813 177 -0.41 49
IV.SELL.HHZ. 2021-04-04T23:33:51.07 0.3 undecidable manual P 63 158.0196 132 0.85 45
IV.SERS.HNN. 2021-04-04T23:33:49.84 0.3 undecidable manual P 62 165.4122 131 -1.06 39
IV.PLAC.HHZ. 2021-04-04T23:33:47.37 0.1 undecidable manual P 84 125.4744 139 -0.02 82
IV.GIZZ.HHZ. 2021-04-04T23:33:47.89 0.3 undecidable manual P 55 126.4734 139 0.42 57
IV.FERC.HNN. 2021-04-04T23:33:45.58 0.3 undecidable manual P 82 98.7234 146 0.22 63
IV.GIB.HHE. 2021-04-04T23:33:45.90 0.3 undecidable manual P 246 93.4398 147 0.91 50
IV.SOI.EHZ. 2021-04-04T23:33:44.94 0.3 undecidable manual P 107 96.3258 147 -0.25 62
IV.JOPP.HHZ. 2021-04-04T23:33:44.19 0.3 undecidable manual P 68 82.3509 151 -0.1 67
IV.EVRN.HHZ. 2021-04-04T23:33:44.61 0.3 undecidable manual P 171 72.7716 154 0.88 54
IV.MSFR.HHZ. 2021-04-04T23:33:43.22 0.3 undecidable manual P 227 49.1175 162 0.62 62
IV.AIO.HHZ. 2021-04-04T23:33:42.87 0.1 positive manual P 153 45.3213 163 0.41 90
IV.SICLA.EHN. 2021-04-04T23:33:42.38 0.3 undecidable manual P 98 62.6928 157 -0.82 55
IV.NOV.HHE. 2021-04-04T23:33:42.96 0.3 undecidable manual P 161 36.2415 166 0.8 60
IV.MUCR.HHE. 2021-04-04T23:33:41.97 0.3 undecidable manual P 199 34.4433 167 -0.14 72
IV.IVUG.HHZ. 2021-04-04T23:33:41.53 0.3 undecidable manual P 348 6.6933 177 -0.1 77
IV.MSRU.HHZ. 2021-04-04T23:33:41.59 0.3 undecidable manual P 100 44.8218 163 -0.85 57
IV.MCPD.HHE. 2021-04-04T23:33:41.75 0.3 undecidable manual P 225 33.744 167 -0.34 70
IV.IVGP.HHZ. 2021-04-04T23:33:41.51 0.3 undecidable manual P 332 7.5813 177 -0.13 76
IV.IVPL.HHZ. 2021-04-04T23:33:41.38 0.1 undecidable manual P 337 4.7952 178 -0.24 100
IV.MPNC.HHZ. 2021-04-04T23:33:41.61 0.3 undecidable manual P 125 37.1295 166 -0.58 64
IV.MILZ.HHZ. 2021-04-04T23:33:40.99 0.1 undecidable manual P 110 21.2676 172 -0.81 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MPNC.HHN. ML:2.0 0.00004584968 1.2064 AML other m 2021-04-04T23:33:59.30
IV.IVPL.HHE. ML:2.2 0.00006994373 0.1696 AML other m 2021-04-04T23:34:00.53
IV.AIO.HHE. ML:2.2 0.00007465 0.32 AML other m 2021-04-04T23:34:00.80
IV.MSRU.HHN. ML:2.5 0.00013800000000000002 0.7 AML other m 2021-04-04T23:34:00.59
IV.AIO.HHN. ML:2.2 0.00007549999999999999 1.16 AML other m 2021-04-04T23:34:01.82
IV.MSRU.HHE. ML:2.7 0.000241 0.44 AML other m 2021-04-04T23:34:01.55
IV.MPNC.HHE. ML:2.4 0.00010400000000000001 0.7 AML other m 2021-04-04T23:34:02.60
IV.JOPP.HHE. ML:2.5 0.00012732569999999999 0.32 AML other m 2021-04-04T23:34:03.60
IV.JOPP.HHN. ML:2.6 0.0001644208 0.256 AML other m 2021-04-04T23:34:04.41
IV.SOI.EHE. ML:2.4 0.00008185568500000001 0.32 AML other m 2021-04-04T23:34:04.95
IV.SOI.EHN. ML:2.2 0.000061932915 0.8736 AML other m 2021-04-04T23:34:08.07
IV.PLAC.HHE. ML:3.2 0.0004805 0.3 AML other m 2021-04-04T23:34:08.81
IV.PLAC.HNE. ML:3.2 0.0004335 1.68 AML other m 2021-04-04T23:34:08.90
IV.PLAC.HHN. ML:3.2 0.0004605 1.68 AML other m 2021-04-04T23:34:08.90
IV.PLAC.HNN. ML:3.2 0.00047299999999999995 0.32 AML other m 2021-04-04T23:34:08.81
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