Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 26-04-2023 and time 23:06:15 (UTC) in region 1 km S San Piero Patti (ME)

A magnitude ML 1.0 earthquake occured in region: 1 km S San Piero Patti (ME), on

  • 26-04-2023 23:06:15 (UTC)
  • 27-04-2023 01:06:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.0430, 14.9660 at 6 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Piero Patti ME 1 2915 2915
Montalbano Elicona ME 5 2287 5202
Raccuja ME 5 1041 6243
Librizzi ME 6 1660 7903
Ucria ME 7 1058 8961
Floresta ME 8 485 9446
Basicò ME 9 612 10058
Montagnareale ME 10 1615 11673
Sant'Angelo di Brolo ME 11 3090 14763
Patti ME 11 13431 28194
Sinagra ME 11 2705 30899
Tripi ME 12 873 31772
Tortorici ME 12 6435 38207
Oliveri ME 12 2181 40388
Roccella Valdemone ME 13 666 41054
Falcone ME 13 2808 43862
Santa Domenica Vittoria ME 14 980 44842
Ficarra ME 14 1469 46311
Castell'Umberto ME 15 3128 49439
Novara di Sicilia ME 15 1337 50776
Furnari ME 16 3784 54560
Gioiosa Marea ME 16 7074 61634
Malvagna ME 16 733 62367
Mazzarrà Sant'Andrea ME 16 1531 63898
Piraino ME 16 3962 67860
San Salvatore di Fitalia ME 17 1319 69179
Galati Mamertino ME 17 2627 71806
Brolo ME 18 5783 77589
Moio Alcantara ME 18 717 78306
Naso ME 18 3813 82119
Randazzo CT 18 10900 93019
Longi ME 19 1473 94492
Mirto ME 19 974 95466
Fondachelli-Fantina ME 19 1019 96485
Rodì Milici ME 19 2056 98541
Frazzanò ME 20 711 99252

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km NW of Acireale (52622 inhabitants)
54 Km W of Messina (238439 inhabitants)
60 Km W of Reggio di Calabria (183035 inhabitants)
61 Km N of Catania (314555 inhabitants)
100 Km NE of Caltanissetta (63360 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 1.0 2023-04-26
23:06:15		 38.0433 14.9657 6 2024-03-01
17:18:10		 Bollettino Sismico Italiano INGV 117745031
Reviewed
Rev100 		ML 1.1 2023-04-26
23:06:15		 38.0307 14.9632 6 2023-04-26
23:29:50		 Sala Sismica INGV-Roma 116782001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-26 23:06:15 ± 0.14
Latitude 38.0433 ± 0.0045
Longitude 14.9657 ± 0.0057
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117745031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 383
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 31
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.04946
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 117745031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-26 12:53:29

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 116782001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-26 23:29:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IVPL.HHZ. 2023-04-26T23:06:29.05 0.6 undecidable manual S 2 36.9297 99 0.61 42
IV.IVUG.HHZ. 2023-04-26T23:06:28.90 0.6 undecidable manual S 3 39.1275 99 -0.29 45
3D.OEM9.HNE. 2023-04-26T23:06:28.60 0.6 undecidable manual S 3 38.2284 99 -0.29 45
IV.AIO.HHZ. 2023-04-26T23:06:24.46 0.6 undecidable manual S 109 24.6531 104 0.19 47
IV.IVPL.HHZ. 2023-04-26T23:06:23.24 0.6 undecidable manual P 2 36.9297 99 0.3 45
IV.MCPD.HHZ. 2023-04-26T23:06:23.62 0.3 undecidable manual S 293 22.1556 105 0.2 71
3D.OEM9.HNE. 2023-04-26T23:06:23.50 0.6 undecidable manual P 3 38.2284 99 0.29 45
IV.IVUG.HHZ. 2023-04-26T23:06:23.41 0.3 undecidable manual P 3 39.1275 99 0.03 72
IV.ECTS.HHZ. 2023-04-26T23:06:23.92 0.6 undecidable manual S 143 22.4553 105 0.4 45
IV.MPNC.HHN. 2023-04-26T23:06:22.88 0.6 undecidable manual P 71 35.6421 100 0.19 47
IV.EPMN.HHN. 2023-04-26T23:06:21.87 0.6 undecidable manual P 143 30.9468 101 0.11 48
IV.AIO.HHZ. 2023-04-26T23:06:20.10 0.1 positive manual P 109 24.6531 104 -0.44 90
IV.MCPD.HHZ. 2023-04-26T23:06:19.77 0.1 positive manual P 293 22.1556 105 -0.28 93
IV.MUCR.HHZ. 2023-04-26T23:06:19.08 0.1 undecidable manual S 270 7.9809 127 0.15 98
IV.ECTS.HHZ. 2023-04-26T23:06:19.75 1.0 undecidable manual P 143 22.4553 105 -0.36 23
IV.LIBRI.HHZ. 2023-04-26T23:06:18.15 0.3 undecidable manual S 324 5.4945 138 -0.13 74
IV.MUCR.HHZ. 2023-04-26T23:06:17.38 0.1 positive manual P 270 7.9809 127 -0.07 100
IV.LIBRI.HHZ. 2023-04-26T23:06:16.99 0.1 positive manual P 324 5.4945 138 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHN. ML:1.2 0.00010400000000000001 0.22 AML other m 2023-04-26T23:06:25.56
IV.AIO.HHE. ML:1.0 0.00006825 0.62 AML other m 2023-04-26T23:06:25.59
IV.LIBRI.HHN. ML:0.0 0.000086493085 0.1536 AML other m 2023-04-26T23:06:18.19
IV.LIBRI.HHE. ML:0.0 0.00013038075 0.2816 AML other m 2023-04-26T23:06:19.55
IV.LIBRI.HNN. ML:0.0 0.00035609964999999997 0.2944 AML other m 2023-04-26T23:06:19.36
IV.LIBRI.HNE. ML:0.0 0.00036783169999999996 0.192 AML other m 2023-04-26T23:06:19.03
IV.MUCR.HHN. ML:1.0 0.0002051579 0.2176 AML other m 2023-04-26T23:06:19.35
IV.MUCR.HHE. ML:0.8 0.00011860660000000001 0.192 AML other m 2023-04-26T23:06:19.40
IV.MCPD.HHE. ML:0.4 0.000021013615 0.32 AML other m 2023-04-26T23:06:25.44
IV.MCPD.HHN. ML:0.4 0.0000208465185 0.3968 AML other m 2023-04-26T23:06:25.15
IV.IVPL.HHE. ML:1.5 0.0001285934 2.7776 AML other m 2023-04-26T23:06:30.21
IV.IVPL.HHN. ML:1.6 0.00015517825000000001 3.584 AML other m 2023-04-26T23:06:31.24
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