Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 07-06-2023 and time 21:29:28 (UTC) in region 5 km S Santa Sofia (FC)

A magnitude ML 1.0 earthquake occured in region: 5 km S Santa Sofia (FC), on

  • 07-06-2023 21:29:28 (UTC)
  • 07-06-2023 23:29:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9050, 11.9250 at 10 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
Santa Sofia FC 5 4136 4136
Bagno di Romagna FC 7 6026 10162
Galeata FC 10 2516 12678
Civitella di Romagna FC 12 3786 16464
Verghereto FC 14 1907 18371
Premilcuore FC 14 799 19170
Sarsina FC 18 3446 22616
Portico e San Benedetto FC 18 756 23372
Rocca San Casciano FC 19 1910 25282

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km SW of Cesena (96758 inhabitants)
37 Km S of Forlì (117913 inhabitants)
43 Km S of Faenza (58541 inhabitants)
49 Km N of Arezzo (99543 inhabitants)
53 Km SE of Imola (69797 inhabitants)
54 Km W of Rimini (147750 inhabitants)
56 Km E of Firenze (382808 inhabitants)
61 Km SW of Ravenna (159116 inhabitants)
62 Km E of Scandicci (50609 inhabitants)
66 Km E of Prato (191150 inhabitants)
79 Km W of Pesaro (94582 inhabitants)
80 Km SE of Bologna (386663 inhabitants)
81 Km NE of Siena (53903 inhabitants)
81 Km E of Pistoia (90315 inhabitants)
88 Km W of Fano (60888 inhabitants)
96 Km NW of Perugia (166134 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 1.0 2023-06-07
21:29:28		 43.905 11.9247 10 2023-06-07
21:39:57		 Sala Sismica INGV-Roma 118193751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-06-07 21:29:28 ± 0.55
Latitude 43.9050 ± 0.0225
Longitude 11.9247 ± 0.0225
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 118193751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2680
Semi-minor axis of confidence ellipse (meter) 1450
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
Circular confidence region, given by single value of horizontal uncertainty (meter) 2680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 294
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
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) 0.66280
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 118193751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-06-07 21:39:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2023-06-07T21:30:04.31 3.0 undecidable manual Sn 0.24 0
IV.MPAG.EHZ. 2023-06-07T21:29:50.90 0.1 undecidable manual S 114 73.5708 50 0.59 86
IV.SEI.HHZ. 2023-06-07T21:29:47.08 3.0 undecidable manual S -0.03 0
IV.PIEI.HHZ. 2023-06-07T21:29:47.44 0.1 undecidable manual S 130 63.7917 50 -0.28 95
IV.NARO.HHZ. 2023-06-07T21:29:47.32 0.3 undecidable manual S 122 61.8936 50 0.13 74
IV.PARC.HHZ. 2023-06-07T21:29:40.19 0.1 undecidable manual S 138 37.9287 50 -0.63 90
IV.MPAG.EHZ. 2023-06-07T21:29:40.50 1.0 positive manual P 114 73.5708 50 -0.38 23
IV.CPGN.EHZ. 2023-06-07T21:29:39.95 0.1 undecidable manual S 110 33.6441 50 0.28 100
IV.CRE.HHZ. 2023-06-07T21:29:39.55 0.1 undecidable manual S 176 31.8459 50 0.37 98
IV.NARO.HHZ. 2023-06-07T21:29:38.78 0.6 undecidable manual P 122 61.8936 50 -0.3 47
IV.PIEI.HHZ. 2023-06-07T21:29:38.77 0.6 positive manual P 130 63.7917 50 -0.61 43
IV.PARC.HHZ. 2023-06-07T21:29:35.00 0.6 undecidable manual P 138 37.9287 50 -0.4 48
IV.CPGN.EHZ. 2023-06-07T21:29:34.94 0.6 positive manual P 110 33.6441 50 0.2 51
IV.CRE.HHZ. 2023-06-07T21:29:34.68 0.3 positive manual P 176 31.8459 50 0.23 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRE.HHN. ML:1.1 0.000060200000000000006 0.18 AML other m 2023-06-07T21:29:39.88
IV.PARC.HHE. ML:0.7 0.000020799999999999997 0.3 AML other m 2023-06-07T21:29:40.73
IV.PARC.HHN. ML:0.8 0.000025399999999999997 0.08 AML other m 2023-06-07T21:29:40.95
IV.CRE.HHE. ML:0.8 0.0000322 0.16 AML other m 2023-06-07T21:29:41.65
IV.SEI.HHN. ML:1.5 0.00008024999999999999 0.68 AML other m 2023-06-07T21:29:47.51
IV.SEI.HHE. ML:1.4 0.00006654999999999999 0.48 AML other m 2023-06-07T21:29:49.02
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