Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 22-02-2023 and time 10:40:49 (UTC) in region 7 km SE Pieve Santo Stefano (AR)

A magnitude ML 0.6 earthquake occured in region: 7 km SE Pieve Santo Stefano (AR), on

  • 22-02-2023 10:40:49 (UTC)
  • 22-02-2023 11:40:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6200, 12.0890 at 9 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
Pieve Santo Stefano AR 7 3183 3183
Sansepolcro AR 7 15884 19067
Caprese Michelangelo AR 9 1426 20493
Anghiari AR 9 5638 26131
San Giustino PG 11 11297 37428
Badia Tedalda AR 13 1087 38515
Citerna PG 14 3531 42046
Monterchi AR 15 1757 43803
Chiusi della Verna AR 15 2023 45826
Borgo Pace PU 17 606 46432
Chitignano AR 17 899 47331
Subbiano AR 18 6331 53662
Capolona AR 19 5438 59100
Sestino AR 20 1355 60455
Casteldelci RN 20 407 60862

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Arezzo (99543 inhabitants)
59 Km S of Cesena (96758 inhabitants)
62 Km NW of Perugia (166134 inhabitants)
62 Km SW of Rimini (147750 inhabitants)
67 Km S of Forlì (117913 inhabitants)
69 Km E of Firenze (382808 inhabitants)
70 Km E of Siena (53903 inhabitants)
74 Km W of Pesaro (94582 inhabitants)
75 Km E of Scandicci (50609 inhabitants)
76 Km S of Faenza (58541 inhabitants)
79 Km W of Fano (60888 inhabitants)
85 Km E of Prato (191150 inhabitants)
87 Km SE of Imola (69797 inhabitants)
89 Km NW of Foligno (57155 inhabitants)
89 Km S of Ravenna (159116 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 0.6 2023-02-22
10:40:49		 43.6195 12.0892 9 2023-02-22
10:53:57		 Sala Sismica INGV-Roma 114695581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-22 10:40:49 ± 0.11
Latitude 43.6195 ± 0.0072
Longitude 12.0892 ± 0.0062
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 114695581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 792
Semi-minor axis of confidence ellipse (meter) 489
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 14
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35613
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 114695581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-22 10:53:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
AC.VLO.HHZ. 2023-02-22T10:42:16.90 3.0 negative manual Pn -2 0
IV.VARE.HHZ. 2023-02-22T10:42:05.63 3.0 undecidable manual Sg -0.06 0
IV.MCRV.HHZ. 2023-02-22T10:41:43.40 3.0 undecidable manual Pn 0.79 0
IV.CIGN.HHZ. 2023-02-22T10:41:32.34 3.0 undecidable manual Pn 0.73 0
IV.VAGA.HHZ. 2023-02-22T10:41:29.38 3.0 undecidable manual Pn -0.59 0
IV.ATPI.EHZ. 2023-02-22T10:41:01.30 0.6 undecidable manual S 127 31.3464 50 0.29 46
IV.CAFI.HHZ. 2023-02-22T10:41:01.48 0.6 undecidable manual S 197 33.6441 50 -0.14 47
IV.NARO.HHZ. 2023-02-22T10:40:56.86 1.0 negative manual P 91 39.5271 50 -0.64 20
IV.ATPI.EHZ. 2023-02-22T10:40:56.09 0.6 undecidable manual P 127 31.3464 50 -0.16 47
IV.CAFI.HHZ. 2023-02-22T10:40:56.62 0.6 undecidable manual P 197 33.6441 50 0.02 48
IV.CPGN.EHZ. 2023-02-22T10:40:55.86 0.3 undecidable manual P 43 27.3504 108 0.33 68
IV.BADI.EHZ. 2023-02-22T10:40:54.62 1.0 undecidable manual P 134 17.4714 118 0.93 19
IV.CRE.HHZ. 2023-02-22T10:40:54.66 0.3 undecidable manual S 270 11.0778 130 -0.06 74
IV.ATMC.EHZ. 2023-02-22T10:40:54.05 0.6 undecidable manual P 156 20.868 114 -0.26 47
IV.PARC.HHZ. 2023-02-22T10:40:54.80 0.3 undecidable manual S 75 12.4764 126 -0.3 71
IV.SSP9.EHE. 2023-02-22T10:40:53.59 0.3 undecidable manual S 146 6.0939 146 0.03 76
IV.CRE.HHZ. 2023-02-22T10:40:52.64 0.1 positive manual P 270 11.0778 130 0.02 100
IV.PARC.HHZ. 2023-02-22T10:40:52.79 0.1 positive manual P 75 12.4764 126 -0.05 99
IV.SSP9.EHE. 2023-02-22T10:40:52.13 0.3 undecidable manual P 146 6.0939 146 0.18 73
IV.IMOL.HNZ. 2023-02-22T10:40:46.96 3.0 positive manual P -8.61 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHE. ML:0.6 0.00005065 0.34 AML other m 2023-02-22T10:40:55.47
IV.PARC.HHN. ML:0.6 0.000050900000000000004 1.52 AML other m 2023-02-22T10:40:56.82
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