Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 30-07-2021 and time 17:04:47 (Italy) in region Mar Ionio Meridionale (MARE)

A magnitude ML 2.5 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 30-07-2021 15:04:47 (UTC)
  • 30-07-2021 17:04:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2480, 16.1890 at 27 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
82 Km E of Siracusa (122291 inhabitants)
99 Km E of Acireale (52622 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 2021-07-30
15:04:47		 37.2477 16.189 27 2021-12-29
11:12:50		 Bollettino Sismico Italiano INGV 97328161
Reviewed
Rev100 		ML 2.5 2021-07-30
15:04:47		 37.2447 16.1915 23 2021-07-30
15:18:00		 Sala Sismica INGV-Roma 93406091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-30 15:04:47 ± 0.22
Latitude 37.2477 ± 0.0081
Longitude 16.1890 ± 0.0147
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97328161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1302
Semi-minor axis of confidence ellipse (meter) 558
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 295
Circular confidence region, given by single value of horizontal uncertainty (meter) 1300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 231
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.47759
Number of stations at which the event was observed 23
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 26
Type of magnitude ML
Reference to an origin 93406091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-30 15:18:00

ML:2.5

Field Value
Value 2.5
Uncertainty 0.4
Num. used stations 26
Type of magnitude ML
Reference to an origin 97328161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-05 17:15:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
AC.VLO.HHZ. 2021-07-30T15:06:33.52 3.0 undecidable manual Sn -5.45 0
IT.RMMM.HGZ. 2021-07-30T15:06:10.78 3.0 undecidable manual Pn 2.79 0
IV.MUCR.HHZ. 2021-07-30T15:05:28.35 0.6 undecidable manual S 308 145.3434 54 0.83 35
IV.HMDC.HHZ. 2021-07-30T15:05:23.47 0.6 undecidable manual S 256 128.4714 54 -0.4 43
IV.HPAC.HHE. 2021-07-30T15:05:22.16 0.6 undecidable manual S 240 118.2927 99 0.61 41
IV.PLAC.HHE. 2021-07-30T15:05:22.93 0.6 undecidable manual S 9 135.0648 54 -2.38 11
IV.AIO.HHE. 2021-07-30T15:05:21.30 1.0 undecidable manual S 314 116.1948 99 0.31 22
IV.HLNI.HHZ. 2021-07-30T15:05:20.16 0.3 undecidable manual S 276 116.7942 99 -0.98 54
IV.EPOZ.HHZ. 2021-07-30T15:05:17.08 0.6 undecidable manual S 298 99.9222 100 0.38 45
IV.HCRL.HHZ. 2021-07-30T15:05:16.90 0.3 undecidable manual S 273 102.12 100 -0.4 69
IV.HAVL.HHZ. 2021-07-30T15:05:16.90 0.3 undecidable manual S 252 99.6225 100 0.26 70
IV.SSY.HHZ. 2021-07-30T15:05:16.40 0.3 undecidable manual S 265 99.0231 100 -0.08 74
IV.HAGA.HHZ. 2021-07-30T15:05:14.47 1.0 undecidable manual S 273 91.3419 101 0 25
IV.SOI.EHZ. 2021-07-30T15:05:14.40 0.3 undecidable manual S 353 92.3409 101 -0.32 71
IV.HSRS.HHZ. 2021-07-30T15:05:13.30 0.3 undecidable manual S 259 87.1461 102 -0.07 76
IV.MCPD.HHZ. 2021-07-30T15:05:13.08 0.3 undecidable manual P 308 160.4172 54 0.72 53
IV.IVPL.HHZ. 2021-07-30T15:05:13.15 0.3 undecidable manual P 320 164.0136 54 0.35 59
IV.MUCR.HHZ. 2021-07-30T15:05:11.07 0.3 undecidable manual P 308 145.3434 54 0.59 59
IV.MILZ.HHZ. 2021-07-30T15:05:10.28 0.3 undecidable manual P 324 141.2475 54 0.31 64
IV.PLAC.HHE. 2021-07-30T15:05:08.51 0.6 undecidable manual P 9 135.0648 54 -0.69 38
IV.MSRU.HHZ. 2021-07-30T15:05:08.28 0.3 undecidable manual P 332 127.5723 54 0.01 70
IV.HVZN.HHZ. 2021-07-30T15:05:08.45 0.3 undecidable manual P 267 130.3695 54 -0.17 67
IV.HMDC.HHZ. 2021-07-30T15:05:07.88 0.1 positive manual P 256 128.4714 54 -0.5 83
IV.HPAC.HHE. 2021-07-30T15:05:07.36 0.6 undecidable manual P 240 118.2927 99 0.32 45
IV.MPNC.HHZ. 2021-07-30T15:05:07.82 0.3 undecidable manual P 324 123.7872 54 0.02 71
IV.SICLA.EHN. 2021-07-30T15:05:06.93 0.3 undecidable manual P 340 119.3916 98 -0.27 68
IV.AIO.HHE. 2021-07-30T15:05:06.76 0.1 negative manual P 314 116.1948 99 0.05 95
IV.HLNI.HHZ. 2021-07-30T15:05:06.36 0.1 negative manual P 276 116.7942 99 -0.44 88
IV.HCRL.HHZ. 2021-07-30T15:05:04.63 0.3 undecidable manual P 273 102.12 100 0.05 73
IV.EPOZ.HHZ. 2021-07-30T15:05:04.81 0.6 undecidable manual P 298 99.9222 100 0.58 43
IV.HAVL.HHZ. 2021-07-30T15:05:04.15 0.1 positive manual P 252 99.6225 100 -0.05 98
IV.SSY.HHZ. 2021-07-30T15:05:03.89 0.3 undecidable manual P 265 99.0231 100 -0.22 71
IV.HAGA.HHZ. 2021-07-30T15:05:03.23 1.0 undecidable manual P 273 91.3419 101 0.28 24
IV.SOI.EHZ. 2021-07-30T15:05:03.07 0.1 negative manual P 353 92.3409 101 -0.02 100
IV.MTTG.HHZ. 2021-07-30T15:05:03.81 0.1 negative manual P 333 94.1391 101 0.44 92
IV.HSRS.HHZ. 2021-07-30T15:05:02.52 0.3 undecidable manual P 259 87.1461 102 0.21 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SOI.EHN. ML:1.6 0.000037699999999999995 0.32 AML other m 2021-07-30T15:05:16.46
IV.SOI.EHE. ML:1.6 0.000041349999999999995 0.38 AML other m 2021-07-30T15:05:16.50
IV.HAVL.HHN. ML:3.0 0.0009400000000000001 0.22 AML other m 2021-07-30T15:05:17.52
IV.HAVL.HHE. ML:2.9 0.0007612441500000001 0.2048 AML other m 2021-07-30T15:05:17.89
IV.HCRL.HHE. ML:2.4 0.00023051864999999998 1.8848 AML other m 2021-07-30T15:05:18.01
IV.SSY.HHN. ML:3.0 0.0008600313 0.1408 AML other m 2021-07-30T15:05:19.31
IV.SSY.HHE. ML:2.6 0.00036449999999999997 0.08 AML other m 2021-07-30T15:05:19.89
IV.HCRL.HHN. ML:2.3 0.00018722820000000002 0.1792 AML other m 2021-07-30T15:05:20.10
IV.HLNI.HHN. ML:2.6 0.00032250545 0.1152 AML other m 2021-07-30T15:05:21.32
IV.HMDC.HNE. ML:2.6 0.00024512815 0.2816 AML other m 2021-07-30T15:05:24.34
IV.HMDC.HHE. ML:2.7 0.00033 0.68 AML other m 2021-07-30T15:05:24.34
IV.HMDC.HHN. ML:2.8 0.000359 0.32 AML other m 2021-07-30T15:05:26.25
IV.HMDC.HNN. ML:2.8 0.00036150000000000006 0.24 AML other m 2021-07-30T15:05:26.37
IV.HVZN.HHE. ML:2.8 0.00040619654999999997 0.32 AML other m 2021-07-30T15:05:26.75
IV.HVZN.HNE. ML:2.8 0.0003684052 0.32 AML other m 2021-07-30T15:05:26.91
IV.HVZN.HHN. ML:2.8 0.0003915 0.24 AML other m 2021-07-30T15:05:27.20
IV.MPNC.HHN. ML:2.1 0.000080132275 0.3072 AML other m 2021-07-30T15:05:27.54
IV.MPNC.HHE. ML:2.0 0.00006834729000000001 0.4608 AML other m 2021-07-30T15:05:28.38
IV.MILZ.HHE. ML:2.6 0.0002009995 0.3584 AML other m 2021-07-30T15:05:29.45
IV.MILZ.HHN. ML:2.3 0.00010234202 0.384 AML other m 2021-07-30T15:05:29.59
IV.MUCR.HHE. ML:2.0 0.0000521 0.44 AML other m 2021-07-30T15:05:31.47
IV.MCPD.HHE. ML:2.0 0.000041113819999999994 0.4608 AML other m 2021-07-30T15:05:33.34
IV.MCPD.HHN. ML:1.9 0.00003549214000000001 0.4224 AML other m 2021-07-30T15:05:34.30
IV.MUCR.HHN. ML:1.9 0.00004475 0.48 AML other m 2021-07-30T15:05:35.43
IV.IVPL.HHE. ML:2.4 0.00010839999999999999 0.6 AML other m 2021-07-30T15:05:38.11
IV.IVPL.HHN. ML:2.5 0.00013793585 0.3584 AML other m 2021-07-30T15:05:38.56
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