Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 28-07-2021 and time 00:56:48 (UTC) in region Mar Ionio Meridionale (MARE)

A magnitude ML 2.4 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 28-07-2021 00:56:48 (UTC)
  • 28-07-2021 02:56:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2780, 16.8370 at 30 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

No Italian municipalities within 100 km from the epicenter with at least 50000 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 2.4 2021-07-28
00:56:48		 37.2778 16.8367 30 2021-12-29
11:12:26		 Bollettino Sismico Italiano INGV 95143101
Reviewed
Rev100 		ML 2.4 2021-07-28
00:56:49		 37.2722 16.7557 29 2021-07-28
01:15:33		 Sala Sismica INGV-Roma 93287511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-28 00:56:48 ± 0.3
Latitude 37.2778 ± 0.0099
Longitude 16.8367 ± 0.0147
Depth (km) 30 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95143101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1327
Semi-minor axis of confidence ellipse (meter) 1080
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) 1330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 177
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 3.63146
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 95143101
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-09 16:55:01

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 93287511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-28 01:15:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CR.STON.BHZ. 2021-07-28T00:58:26.44 3.0 undecidable manual Pg 16.040001 0
IV.POFI.HHZ. 2021-07-28T00:58:21.46 3.0 undecidable manual Pg 17.950001 0
IV.AMUR.HHZ. 2021-07-28T00:57:42.59 0.3 undecidable manual P 357 403.0965 54 -1.45 13
IV.HVIT.HHZ. 2021-07-28T00:57:42.83 0.6 undecidable manual S 262 207.1371 54 0.7 30
IV.NOCI.HHZ. 2021-07-28T00:57:40.79 0.3 undecidable manual P 3 390.0207 54 -1.61 12
IV.HVZN.HHZ. 2021-07-28T00:57:38.39 0.6 undecidable manual S 267 187.6677 54 0.46 37
IV.HMDC.HHZ. 2021-07-28T00:57:37.29 0.6 undecidable manual S 260 185.0703 54 -0.08 40
IV.MILZ.HHN. 2021-07-28T00:57:36.12 0.3 undecidable manual S 309 178.7877 54 0.11 62
OT.TAR1.HHZ. 2021-07-28T00:57:36.35 0.6 undecidable manual P 6 362.3595 54 -2.62 3
IV.NOV.HHZ. 2021-07-28T00:57:35.11 0.3 undecidable manual S 300 170.8956 54 0.79 53
IV.HPAC.HHZ. 2021-07-28T00:57:35.60 0.6 undecidable manual S 249 171.495 54 1.16 30
HL.VLS.HHZ. 2021-07-28T00:57:34.38 0.3 undecidable manual P 72 344.0001 54 -2.3 7
IV.HLNI.HHZ. 2021-07-28T00:57:33.86 0.3 undecidable manual S 273 173.493 54 -1.02 47
IV.MPNC.HHZ. 2021-07-28T00:57:33.09 0.6 undecidable manual S 307 162.0156 54 0.69 38
IV.JOPP.HHZ. 2021-07-28T00:57:33.54 0.3 undecidable manual S 331 169.2972 54 -0.43 61
IV.SCTE.HHZ. 2021-07-28T00:57:33.60 0.1 undecidable manual P 24 340.7034 54 -2.67 5
IV.MSRU.HHZ. 2021-07-28T00:57:32.30 0.6 undecidable manual S 314 159.8178 54 0.38 43
IV.HCRL.HHZ. 2021-07-28T00:57:31.25 0.6 undecidable manual S 271 159.2184 54 -0.55 41
IV.SSY.HHZ. 2021-07-28T00:57:30.73 0.6 undecidable manual S 266 156.3213 54 -0.44 43
IV.HAVL.HHZ. 2021-07-28T00:57:30.26 0.6 undecidable manual S 257 155.7219 54 -0.79 38
IV.HSRS.HHZ. 2021-07-28T00:57:28.11 0.3 undecidable manual S 262 144.1446 54 -0.44 67
IV.PLAC.HHE. 2021-07-28T00:57:26.01 0.3 undecidable manual S 345 134.5653 54 -0.47 68
IV.MTTG.HHZ. 2021-07-28T00:57:24.72 0.6 undecidable manual S 309 128.2716 54 -0.4 47
IV.SOI.EHZ. 2021-07-28T00:57:21.27 0.3 undecidable manual S 322 111.7992 54 -0.31 74
IV.HVIT.HHZ. 2021-07-28T00:57:20.05 0.3 undecidable manual P 262 207.1371 54 0.4 50
IV.HVZN.HHZ. 2021-07-28T00:57:17.47 0.1 undecidable manual P 267 187.6677 54 0.24 77
IV.HMDC.HHZ. 2021-07-28T00:57:16.84 0.1 undecidable manual P 260 185.0703 54 -0.06 81
IV.MILZ.HHN. 2021-07-28T00:57:16.60 0.3 undecidable manual P 309 178.7877 54 0.48 58
IV.JOPP.HHZ. 2021-07-28T00:57:15.33 0.3 undecidable manual P 331 169.2972 54 0.39 62
IV.HPAC.HHZ. 2021-07-28T00:57:15.65 0.1 undecidable manual P 249 171.495 54 0.44 80
IV.NOV.HHZ. 2021-07-28T00:57:15.71 0.3 undecidable manual P 300 170.8956 54 0.57 58
IV.MSRU.HHZ. 2021-07-28T00:57:14.40 0.3 undecidable manual P 314 159.8178 54 0.64 59
IV.HLNI.HHZ. 2021-07-28T00:57:14.92 0.1 undecidable manual P 273 173.493 54 -0.55 77
IV.AIO.HHE. 2021-07-28T00:57:14.12 0.3 undecidable manual P 299 160.5171 54 0.27 66
IV.MPNC.HHZ. 2021-07-28T00:57:14.68 0.1 undecidable manual P 307 162.0156 54 0.65 78
IV.HCRL.HHZ. 2021-07-28T00:57:13.37 0.1 undecidable manual P 271 159.2184 54 -0.32 87
IV.HAVL.HHZ. 2021-07-28T00:57:13.10 0.1 positive manual P 257 155.7219 54 -0.15 92
IV.HAGA.HHZ. 2021-07-28T00:57:12.10 0.3 undecidable manual P 271 148.4403 54 -0.24 70
IV.SSY.HHZ. 2021-07-28T00:57:12.82 0.3 undecidable manual P 266 156.3213 54 -0.5 64
IV.SICLA.EHN. 2021-07-28T00:57:12.32 0.3 undecidable manual P 318 146.5422 54 0.22 70
IV.HSRS.HHZ. 2021-07-28T00:57:11.61 0.1 undecidable manual P 262 144.1446 54 -0.2 95
IV.MTTG.HHZ. 2021-07-28T00:57:10.18 0.1 undecidable manual P 309 128.2716 54 0.35 95
IV.PLAC.HHE. 2021-07-28T00:57:10.32 0.3 undecidable manual P 345 134.5653 54 -0.3 71
IV.SOI.EHZ. 2021-07-28T00:57:08.06 0.1 positive manual P 322 111.7992 54 0.27 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SOI.EHN. ML:1.6 0.0000363 0.46 AML other m 2021-07-28T00:57:08.57
IV.SOI.EHE. ML:1.6 0.00002915 0.92 AML other m 2021-07-28T00:57:21.04
IV.HAGA.HHN. ML:2.1 0.00005945 0.48 AML other m 2021-07-28T00:57:28.95
IV.HSRS.HHN. ML:1.8 0.000033199999999999994 0.52 AML other m 2021-07-28T00:57:29.56
IV.HSRS.HHE. ML:1.9 0.00004305 0.48 AML other m 2021-07-28T00:57:31.77
IV.HAGA.HHE. ML:2.1 0.0000591 1.12 AML other m 2021-07-28T00:57:31.00
IV.HCRL.HHE. ML:2.4 0.000127 0.9 AML other m 2021-07-28T00:57:31.47
IV.HAVL.HHN. ML:2.6 0.00016499999999999997 0.84 AML other m 2021-07-28T00:57:32.53
IV.HAVL.HHE. ML:2.4 0.00012345 0.76 AML other m 2021-07-28T00:57:33.67
IV.SSY.HHE. ML:2.7 0.00023549999999999998 1.06 AML other m 2021-07-28T00:57:33.89
IV.MSRU.HHN. ML:2.0 0.0000454 1.16 AML other m 2021-07-28T00:57:34.81
IV.JOPP.HHN. ML:1.8 0.00002595 0.68 AML other m 2021-07-28T00:57:34.42
IV.MPNC.HHN. ML:2.3 0.00007845 1 AML other m 2021-07-28T00:57:34.41
IV.HCRL.HHN. ML:2.4 0.00009870000000000001 0.88 AML other m 2021-07-28T00:57:35.74
IV.MPNC.HHE. ML:2.2 0.0000743 0.48 AML other m 2021-07-28T00:57:36.11
IV.HMDC.HHN. ML:2.5 0.00009915 1.14 AML other m 2021-07-28T00:57:39.02
IV.HVZN.HHE. ML:2.6 0.000124 1.18 AML other m 2021-07-28T00:57:39.35
IV.SSY.HHN. ML:3.0 0.00044950000000000003 1.32 AML other m 2021-07-28T00:57:40.94
IV.HPAC.HHN. ML:2.4 0.00010499999999999999 1.3 AML other m 2021-07-28T00:57:41.77
IV.HMDC.HHE. ML:2.4 0.00008360000000000001 1.12 AML other m 2021-07-28T00:57:41.66
IV.MSRU.HHE. ML:2.0 0.0000487 1.34 AML other m 2021-07-28T00:57:42.98
IV.HPAC.HHE. ML:2.4 0.00008779999999999999 0.68 AML other m 2021-07-28T00:57:43.86
IV.HVIT.HHE. ML:2.4 0.00006315 0.24 AML other m 2021-07-28T00:57:44.59
IV.HVIT.HHN. ML:2.5 0.00009145 0.32 AML other m 2021-07-28T00:57:44.66
IV.JOPP.HHE. ML:1.6 0.000012899999999999998 1.24 AML other m 2021-07-28T00:57:45.05
IV.HVZN.HHN. ML:2.6 0.0001265 1.18 AML other m 2021-07-28T00:57:46.59
IV.SCTE.HHN. ML:2.6 0.0000415 0.22 AML other m 2021-07-28T00:58:06.71
HL.VLS.HHE. ML:2.8 0.000055150000000000006 0.78 AML other m 2021-07-28T00:58:08.63
IV.SCTE.HHE. ML:2.8 0.0000478 0.6 AML other m 2021-07-28T00:58:09.52
HL.VLS.HHN. ML:2.9 0.00006485 1.76 AML other m 2021-07-28T00:58:09.90
OT.TAR1.HHN. ML:2.7 0.00003784999999999999 0.46 AML other m 2021-07-28T00:58:13.36
OT.TAR1.HHE. ML:2.7 0.000033100000000000005 0.36 AML other m 2021-07-28T00:58:13.94
IV.NOCI.HHE. ML:2.8 0.00003845 0.62 AML other m 2021-07-28T00:58:19.99
IV.NOCI.HHN. ML:2.9 0.000045350000000000005 0.82 AML other m 2021-07-28T00:58:20.30
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