Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 24-07-2023 and time 23:24:39 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 1.9 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 24-07-2023 21:24:39 (UTC)
  • 24-07-2023 23:24:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.4210, 15.3850 at 116 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
29 Km NW of Messina (238439 inhabitants)
41 Km NW of Reggio di Calabria (183035 inhabitants)
92 Km N 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
Reviewed
Rev100 		ML 1.9 2023-07-24
21:24:39		 38.4213 15.3848 116 2023-07-24
21:33:29		 Sala Sismica INGV-Roma 119542381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-24 21:24:39 ± 0.44
Latitude 38.4213 ± 0.0414
Longitude 15.3848 ± 0.0264
Depth (km) 116 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 119542381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4369
Semi-minor axis of confidence ellipse (meter) 1925
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 180
Circular confidence region, given by single value of horizontal uncertainty (meter) 4370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.18436
Epicentral distance of station farthest from the epicenter (degree) 0.82558
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 119542381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-24 21:33:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2023-07-24T21:25:14.95 0.6 undecidable manual S 88 91.6416 138 0.24 45
IV.AIO.HHN. 2023-07-24T21:25:10.41 0.6 undecidable manual S 195 51.7038 154 0.54 45
IY.CNDF.HHN.00 2023-07-24T21:25:10.91 0.6 undecidable manual S 138 61.9935 149 -0.03 50
IV.MRCB.HHN. 2023-07-24T21:25:08.52 0.6 undecidable manual S 136 39.9267 159 -0.34 49
IV.MILZ.HHZ. 2023-07-24T21:25:07.48 0.6 undecidable manual S 219 21.3675 169 -0.28 51
IV.PLAC.HHZ. 2023-07-24T21:24:59.85 0.1 positive manual P 88 91.6416 138 0.01 95
IV.FERC.HHE.00 2023-07-24T21:24:58.42 0.3 undecidable manual P 87 64.6908 148 0.6 65
IY.CNDF.HHN.00 2023-07-24T21:24:57.23 0.6 undecidable manual P 138 61.9935 149 -0.43 46
IV.AIO.HHN. 2023-07-24T21:24:57.47 0.6 undecidable manual P 195 51.7038 154 0.43 47
IV.IVPL.HHZ. 2023-07-24T21:24:56.15 0.6 undecidable manual P 262 35.5422 161 -0.13 51
IV.MTTG.HHZ. 2023-07-24T21:24:56.87 1.0 undecidable manual P 149 53.9016 153 -0.3 24
IV.MRCB.HHN. 2023-07-24T21:24:56.23 1.0 undecidable manual P 136 39.9267 159 -0.23 25
3D.OEM9.HHZ. 2023-07-24T21:24:56.57 0.1 undecidable manual P 264 34.4433 162 0.34 98
IV.MILZ.HHZ. 2023-07-24T21:24:55.45 0.1 positive manual P 219 21.3675 169 -0.37 100
IV.MSRU.HHZ. 2023-07-24T21:24:55.34 0.6 undecidable manual P 148 20.4684 169 -0.45 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
7C.SPAOL.HNN. ML:4.0 0.005645000000000001 0.5 AML other m 2023-07-24T21:25:04.84
IV.MSRU.HHN. ML:0.0 0.00007188871 0.32 AML other m 2023-07-24T21:25:08.12
IV.MSRU.HHE. ML:0.0 0.000066275505 0.1536 AML other m 2023-07-24T21:25:07.66
IV.MILZ.HHE. ML:0.0 0.00004517073500000001 0.2432 AML other m 2023-07-24T21:25:08.38
IV.MILZ.HHN. ML:0.0 0.000028359955 0.2304 AML other m 2023-07-24T21:25:08.13
IV.PLAC.HHN. ML:0.0 0.000034853419999999995 0.3584 AML other m 2023-07-24T21:25:15.97
IV.PLAC.HHE. ML:0.0 0.000024350535 0.3328 AML other m 2023-07-24T21:25:16.02
IV.MSRU.HNE. ML:0.0 0.00008063902 0.7552 AML other m 2023-07-24T21:25:14.01
IV.MSRU.HNN. ML:0.0 0.000107561675 0.7424 AML other m 2023-07-24T21:25:24.26
IV.IVPL.HNE. ML:0.0 0.000027530530000000002 0 AML other m 2023-07-24T21:25:16.40
IV.IVPL.HNN. ML:0.0 0.000024393755 0.064 AML other m 2023-07-24T21:25:16.47
IV.IVPL.HHE. ML:0.0 0.00006136410000000001 0.8576 AML other m 2023-07-24T21:25:04.06
IV.IVPL.HHN. ML:0.0 0.000049464640000000004 0.704 AML other m 2023-07-24T21:25:26.14
IV.PLAC.HNE. ML:0.0 0.00011370571999999999 1.2544 AML other m 2023-07-24T21:25:29.19
IV.PLAC.HNN. ML:0.0 0.00010594249 0.8832 AML other m 2023-07-24T21:25:30.17
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