Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 02-05-2023 and time 22:43:08 (Italy) in region Costa Siciliana centro settentrionale (Palermo)

A magnitude ML 1.9 earthquake occured in region: Costa Siciliana centro settentrionale (Palermo), on

  • 02-05-2023 20:43:08 (UTC)
  • 02-05-2023 22:43:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.4300, 13.4020 at 5 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Palermo (674435 inhabitants)
40 Km N of Bagheria (55387 inhabitants)
90 Km NE of Trapani (68759 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 2023-05-02
20:43:08		 38.4297 13.4023 5 2023-05-02
21:02:10		 Sala Sismica INGV-Roma 116966621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-02 20:43:08 ± 0.12
Latitude 38.4297 ± 0.0054
Longitude 13.4023 ± 0.0126
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116966621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1179
Semi-minor axis of confidence ellipse (meter) 182
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.26980
Epicentral distance of station farthest from the epicenter (degree) 0.75003
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 8
Type of magnitude ML
Reference to an origin 116966621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-02 21:02:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CIMI.HNZ. 2023-05-02T20:43:28.24 0.6 undecidable manual S 166 62.5929 50 -0.6 42
IV.CORL.HHZ. 2023-05-02T20:43:28.69 0.6 undecidable manual S 188 59.9955 50 0.53 43
IV.MARIO.HNZ. 2023-05-02T20:43:26.73 0.6 undecidable manual S 177 52.8027 50 0.5 45
IV.ERC.EHE. 2023-05-02T20:43:23.62 0.6 undecidable manual P 239 83.25 50 0.24 45
IV.SOLUN.HHZ. 2023-05-02T20:43:22.46 0.3 undecidable manual S 163 39.1275 98 0.39 70
IV.CSLB.HHZ. 2023-05-02T20:43:22.63 0.1 undecidable manual P 133 79.0653 50 -0.09 93
IV.GIB.HHE. 2023-05-02T20:43:21.95 0.6 undecidable manual P 132 73.0713 50 0.16 46
IV.USI.HHZ. 2023-05-02T20:43:21.15 0.3 undecidable manual S 328 36.4413 98 0.01 76
IV.MBFT.HHZ. 2023-05-02T20:43:20.62 0.1 undecidable manual P 216 66.378 50 -0.16 94
IV.CIMI.HNZ. 2023-05-02T20:43:20.37 0.3 undecidable manual P 166 62.5929 50 0.18 70
IV.CORL.HHZ. 2023-05-02T20:43:19.49 0.1 undecidable manual P 188 59.9955 50 -0.3 92
IV.MARIO.HNZ. 2023-05-02T20:43:18.56 0.1 undecidable manual P 177 52.8027 50 -0.12 97
IV.MPG.HHZ. 2023-05-02T20:43:18.80 0.6 undecidable manual S 187 29.9478 100 -0.12 50
IV.SOLUN.HHZ. 2023-05-02T20:43:16.20 0.1 undecidable manual P 163 39.1275 98 -0.08 100
IV.USI.HHZ. 2023-05-02T20:43:15.87 0.1 undecidable manual P 328 36.4413 98 0.13 99
IV.MPG.HHZ. 2023-05-02T20:43:14.28 0.1 undecidable manual P 187 29.9478 100 -0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MPG.HHE. ML:1.8 0.00033499999999999996 0.24 AML other m 2023-05-02T20:43:19.68
IV.MPG.HHN. ML:1.8 0.00033899999999999995 0.42 AML other m 2023-05-02T20:43:21.41
IV.USI.HHE. ML:2.0 0.00035299999999999996 0.82 AML other m 2023-05-02T20:43:22.49
IV.USI.HHN. ML:2.5 0.00131 0.28 AML other m 2023-05-02T20:43:24.16
IV.SOLUN.HHN. ML:2.0 0.000374 0.52 AML other m 2023-05-02T20:43:24.45
IV.SOLUN.HHE. ML:2.0 0.0003255 0.54 AML other m 2023-05-02T20:43:24.15
IV.MBFT.HHN. ML:1.6 0.00006285000000000001 0.78 AML other m 2023-05-02T20:43:30.17
IV.MBFT.HHE. ML:1.5 0.0000538 0.6 AML other m 2023-05-02T20:43:31.51
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