Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 21-03-2023 and time 22:37:01 (Italy) in region 3 km NW Caprese Michelangelo (AR)

A magnitude ML 1.0 earthquake occured in region: 3 km NW Caprese Michelangelo (AR), on

  • 21-03-2023 21:37:01 (UTC)
  • 21-03-2023 22:37:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6650, 11.9620 at 12 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Caprese Michelangelo AR 3 1426 1426
Chiusi della Verna AR 5 2023 3449
Chitignano AR 7 899 4348
Pieve Santo Stefano AR 7 3183 7531
Castel Focognano AR 10 3149 10680
Bibbiena AR 12 12241 22921
Subbiano AR 12 6331 29252
Capolona AR 14 5438 34690
Verghereto FC 15 1907 36597
Talla AR 16 1062 37659
Anghiari AR 16 5638 43297
Ortignano Raggiolo AR 17 878 44175
Poppi AR 17 6160 50335
Sansepolcro AR 18 15884 66219
Badia Tedalda AR 19 1087 67306

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km N of Arezzo (99543 inhabitants)
57 Km SW of Cesena (96758 inhabitants)
58 Km E of Firenze (382808 inhabitants)
63 Km S of Forlì (117913 inhabitants)
64 Km E of Scandicci (50609 inhabitants)
64 Km NE of Siena (53903 inhabitants)
66 Km SW of Rimini (147750 inhabitants)
69 Km S of Faenza (58541 inhabitants)
71 Km NW of Perugia (166134 inhabitants)
74 Km E of Prato (191150 inhabitants)
79 Km S of Imola (69797 inhabitants)
81 Km W of Pesaro (94582 inhabitants)
86 Km S of Ravenna (159116 inhabitants)
87 Km W of Fano (60888 inhabitants)
89 Km E of Pistoia (90315 inhabitants)
99 Km NW of Foligno (57155 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 2023-03-21
21:37:01		 43.6647 11.9623 13 2024-03-01
17:18:19		 Bollettino Sismico Italiano INGV 124164931
Reviewed
Rev100 		ML 1.0 2023-03-21
21:37:01		 43.6683 11.9723 13 2023-03-21
21:42:06		 Sala Sismica INGV-Roma 115606921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-21 21:37:01 ± 0.07
Latitude 43.6647 ± 0.0045
Longitude 11.9623 ± 0.0062
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124164931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 551
Semi-minor axis of confidence ellipse (meter) 141
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
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) 0.45146
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 124164931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-20 16:28:39

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 115606921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-21 21:42:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2023-03-21T21:37:17.22 0.6 undecidable manual S 97 50.0166 92 -0.09 46
IV.ATVO.HHZ. 2023-03-21T21:37:17.00 0.6 undecidable manual S 131 47.5191 92 0.35 43
IV.LMD.HHZ. 2023-03-21T21:37:17.24 0.6 undecidable manual S 336 50.1165 92 -0.1 45
IV.ATMI.HHZ. 2023-03-21T21:37:15.93 0.6 undecidable manual S 146 44.1225 93 0.18 45
IV.RUFI.EHZ. 2023-03-21T21:37:15.12 0.3 undecidable manual S 298 41.0256 93 0.19 69
IV.ATPI.EHZ. 2023-03-21T21:37:15.45 0.6 undecidable manual S 124 42.624 93 0.12 46
IV.CAFI.HHZ. 2023-03-21T21:37:14.17 0.6 undecidable manual S 180 37.2294 93 0.27 45
IV.CPGN.EHZ. 2023-03-21T21:37:14.01 0.6 undecidable manual S 62 32.4453 94 1.38 29
IV.SFI.EHZ. 2023-03-21T21:37:11.20 0.6 undecidable manual S 341 28.1496 95 -0.3 45
IV.BADI.EHZ. 2023-03-21T21:37:11.33 0.6 undecidable manual S 127 28.4493 95 -0.24 47
IV.LMD.HHZ. 2023-03-21T21:37:10.57 0.3 undecidable manual P 336 50.1165 92 -0.08 69
IV.VMGN.HHZ. 2023-03-21T21:37:10.33 0.6 undecidable manual P 0.08 0.91
IV.NARO.HHZ. 2023-03-21T21:37:10.50 0.3 undecidable manual P 97 50.0166 92 -0.13 68
IV.ATVO.HHZ. 2023-03-21T21:37:10.13 0.3 undecidable manual P 131 47.5191 92 -0.12 69
IV.ATPI.EHZ. 2023-03-21T21:37:09.28 0.1 undecidable manual P 124 42.624 93 -0.2 91
IV.ATMI.HHZ. 2023-03-21T21:37:09.65 0.3 undecidable manual P 146 44.1225 93 -0.08 70
IV.RUFI.EHZ. 2023-03-21T21:37:09.42 0.3 undecidable manual P 298 41.0256 93 0.17 69
IV.PARC.HHE. 2023-03-21T21:37:09.56 0.6 undecidable manual S 94 22.2555 99 -0.36 46
IV.CPGN.EHZ. 2023-03-21T21:37:08.33 0.1 undecidable manual P 62 32.4453 94 0.4 89
IV.SSP9.EHZ. 2023-03-21T21:37:08.58 0.6 undecidable manual S 127 16.872 106 0.05 49
IV.CAFI.HHZ. 2023-03-21T21:37:08.65 0.1 positive manual P 180 37.2294 93 -0.01 95
IV.SFI.EHZ. 2023-03-21T21:37:07.07 0.1 undecidable manual P 341 28.1496 95 -0.2 93
IV.BADI.EHZ. 2023-03-21T21:37:07.17 0.1 positive manual P 127 28.4493 95 -0.14 95
IV.PARC.HHE. 2023-03-21T21:37:06.12 0.1 undecidable manual P 94 22.2555 99 -0.25 93
IV.CRE.HHE. 2023-03-21T21:37:06.08 0.3 undecidable manual S 190 5.1948 151 0.02 75
IV.SSP9.EHZ. 2023-03-21T21:37:05.54 0.1 undecidable manual P 127 16.872 106 -0.02 99
IV.CRE.HHE. 2023-03-21T21:37:04.21 0.1 undecidable manual P 190 5.1948 151 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHE. ML:0.8 0.00003305 0.5 AML other m 2023-03-21T21:37:11.53
IV.BADI.EHN. ML:1.4 0.0001246 0.14 AML other m 2023-03-21T21:37:11.66
IV.BADI.EHE. ML:1.2 0.00007845000000000001 0.26 AML other m 2023-03-21T21:37:11.82
IV.SFI.EHN. ML:0.7 0.00002625 1.06 AML other m 2023-03-21T21:37:15.18
IV.CAFI.HHE. ML:0.7 0.0000222 0.46 AML other m 2023-03-21T21:37:15.80
IV.CAFI.HHN. ML:0.7 0.000019450000000000002 0.42 AML other m 2023-03-21T21:37:16.12
IV.VMGN.HHN. ML:0.7 0.00001525 0.56 AML other m 2023-03-21T21:37:17.30
IV.VMGN.HHE. ML:0.9 0.0000197 1.34 AML other m 2023-03-21T21:37:17.79
IV.ATMI.HHE. ML:1.4 0.00007095 0.6 AML other m 2023-03-21T21:37:17.99
IV.ATMI.HHN. ML:1.3 0.00006435 1.58 AML other m 2023-03-21T21:37:19.07
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