Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 09-07-2023 and time 21:55:48 (Italy) in region 2 km SW Roccella Valdemone (ME)

A magnitude ML 1.3 earthquake occured in region: 2 km SW Roccella Valdemone (ME), on

  • 09-07-2023 19:55:48 (UTC)
  • 09-07-2023 21:55:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9180, 14.9940 at 33 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Roccella Valdemone ME 2 666 666
Santa Domenica Vittoria ME 3 980 1646
Malvagna ME 5 733 2379
Moio Alcantara ME 5 717 3096
Randazzo CT 6 10900 13996
Floresta ME 11 485 14481
Castiglione di Sicilia CT 12 3215 17696
Montalbano Elicona ME 12 2287 19983
Francavilla di Sicilia ME 13 3945 23928
Maletto CT 15 3920 27848
San Piero Patti ME 15 2915 30763
Linguaglossa CT 16 5403 36166
Motta Camastra ME 16 845 37011
Novara di Sicilia ME 16 1337 38348
Raccuja ME 17 1041 39389
Basicò ME 17 612 40001
Tripi ME 17 873 40874
Maniace CT 17 3765 44639
Ucria ME 17 1058 45697
Fondachelli-Fantina ME 18 1019 46716
Tortorici ME 19 6435 53151

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NW of Acireale (52622 inhabitants)
47 Km N of Catania (314555 inhabitants)
58 Km SW of Messina (238439 inhabitants)
61 Km W of Reggio di Calabria (183035 inhabitants)
95 Km NE of Caltanissetta (63360 inhabitants)
99 Km N of Siracusa (122291 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 1.3 2023-07-09
19:55:48		 37.9182 14.9942 33 2023-07-09
20:07:01		 Sala Sismica INGV-Roma 119116681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-09 19:55:48 ± 0.24
Latitude 37.9182 ± 0.0099
Longitude 14.9942 ± 0.0125
Depth (km) 33 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 119116681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1100
Semi-minor axis of confidence ellipse (meter) 868
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
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) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.10432
Epicentral distance of station farthest from the epicenter (degree) 0.57736
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 119116681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-09 20:07:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2023-07-09T19:56:00.44 0.1 undecidable manual P 190 64.0914 113 -0.16 88
IV.AIO.HHZ. 2023-07-09T19:56:00.30 0.6 undecidable manual S 74 21.6672 144 0.09 49
IV.EPMN.HHZ. 2023-07-09T19:55:59.80 0.6 undecidable manual S 124 19.3695 147 -0.06 49
IV.LIBRI.HHE. 2023-07-09T19:55:59.60 0.6 undecidable manual S 343 19.2696 147 -0.24 48
IV.NOV.HHZ. 2023-07-09T19:55:59.39 0.6 undecidable manual S 46 17.3715 150 -0.19 48
IV.MUCR.HHE. 2023-07-09T19:55:59.30 0.6 undecidable manual S 323 17.3715 150 -0.29 48
IV.EPZF.HHZ. 2023-07-09T19:55:59.60 0.6 undecidable manual S 229 15.873 152 0.21 48
IV.MUCR.HHE. 2023-07-09T19:55:55.08 0.1 undecidable manual P 323 17.3715 150 0.13 97
IV.EPMN.HHZ. 2023-07-09T19:55:55.19 0.1 undecidable manual P 124 19.3695 147 0.08 98
IV.AIO.HHZ. 2023-07-09T19:55:55.85 0.6 positive manual P 74 21.6672 144 0.54 44
IV.LIBRI.HHE. 2023-07-09T19:55:55.37 0.1 undecidable manual P 343 19.2696 147 0.27 94
IV.NOV.HHZ. 2023-07-09T19:55:54.49 0.1 undecidable manual P 46 17.3715 150 -0.46 91
IV.EPZF.HHZ. 2023-07-09T19:55:54.98 0.6 negative manual P 229 15.873 152 0.14 49
IV.EMNR.HHE. 2023-07-09T19:55:54.61 0.1 undecidable manual P 166 11.5773 159 0.05 100
IV.ECTS.HHE. 2023-07-09T19:55:54.54 0.1 undecidable manual P 110 11.7771 159 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NOV.HHN. ML:1.2 0.0000616 0.9 AML other m 2023-07-09T19:55:59.58
IV.NOV.HHE. ML:1.3 0.0000853 1.14 AML other m 2023-07-09T19:56:00.64
IV.AIO.HHE. ML:1.0 0.00003525 1.04 AML other m 2023-07-09T19:56:00.40
IV.AIO.HHN. ML:1.0 0.0000343 0.4 AML other m 2023-07-09T19:56:01.58
IV.HLNI.HHE. ML:1.4 0.0000406 0.12 AML other m 2023-07-09T19:56:09.11
IV.HLNI.HHN. ML:1.3 0.000034250000000000006 0.22 AML other m 2023-07-09T19:56:09.18
IV.EPZF.HHE. ML:1.6 0.00015398725000000002 0.3456 AML other m 2023-07-09T19:55:59.82
IV.EPZF.HHN. ML:1.8 0.00024326195 1.0112 AML other m 2023-07-09T19:55:59.76
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