Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 11-04-2024 and time 10:32:21 (Italy) in region 4 km NW Sansepolcro (AR)

A magnitude ML 1.0 earthquake occured in region: 4 km NW Sansepolcro (AR), on

  • 11-04-2024 08:32:21 (UTC)
  • 11-04-2024 10:32:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6030, 12.1170 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
Sansepolcro AR 4 15884 15884
San Giustino PG 8 11297 27181
Anghiari AR 8 5638 32819
Pieve Santo Stefano AR 10 3183 36002
Caprese Michelangelo AR 12 1426 37428
Citerna PG 12 3531 40959
Badia Tedalda AR 13 1087 42046
Monterchi AR 13 1757 43803
Borgo Pace PU 16 606 44409
Chiusi della Verna AR 18 2023 46432
Mercatello sul Metauro PU 19 1378 47810
Monte Santa Maria Tiberina PG 19 1183 48993
Sestino AR 19 1355 50348
Città di Castello PG 19 39913 90261

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Arezzo (99543 inhabitants)
59 Km NW of Perugia (166134 inhabitants)
60 Km S of Cesena (96758 inhabitants)
63 Km SW of Rimini (147750 inhabitants)
69 Km S of Forlì (117913 inhabitants)
71 Km E of Siena (53903 inhabitants)
72 Km E of Firenze (382808 inhabitants)
73 Km W of Pesaro (94582 inhabitants)
77 Km E of Scandicci (50609 inhabitants)
77 Km W of Fano (60888 inhabitants)
78 Km S of Faenza (58541 inhabitants)
86 Km NW of Foligno (57155 inhabitants)
88 Km E of Prato (191150 inhabitants)
90 Km SE of Imola (69797 inhabitants)
91 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 1.0 2024-04-11
08:32:21		 43.6027 12.1168 10 2024-04-11
08:49:01		 Sala Sismica INGV-Roma 126641201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-11 08:32:21 ± 0.07
Latitude 43.6027 ± 0.0045
Longitude 12.1168 ± 0.0050
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126641201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 516
Semi-minor axis of confidence ellipse (meter) 335
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35973
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 126641201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-11 08:49:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2024-04-11T08:32:39.94 3.0 positive manual P 0.88 0
IV.NARO.HHZ. 2024-04-11T08:32:34.10 0.6 undecidable manual S 88 37.2294 50 0.06 47
IV.ATVO.HHZ. 2024-04-11T08:32:33.32 0.6 undecidable manual S 136 33.8439 50 0.21 46
IV.PIEI.HHZ. 2024-04-11T08:32:33.26 0.3 undecidable manual S 102 34.4433 50 -0.02 72
IV.ATMI.HHZ. 2024-04-11T08:32:32.54 0.6 undecidable manual S 158 32.1456 50 -0.14 47
IV.CAFI.HHZ. 2024-04-11T08:32:32.89 0.3 undecidable manual S 202 32.6451 50 0.08 72
IV.ATPI.EHZ. 2024-04-11T08:32:31.72 0.6 undecidable manual S 126 28.4493 50 0.03 49
IV.SFI.EHE. 2024-04-11T08:32:29.33 0.3 undecidable manual P 327 39.9267 50 0.24 68
IV.ATMI.HHZ. 2024-04-11T08:32:28.14 0.3 undecidable manual P 158 32.1456 50 0.23 69
IV.CAFI.HHZ. 2024-04-11T08:32:28.09 0.1 undecidable manual P 202 32.6451 50 0.11 95
IV.PIEI.HHZ. 2024-04-11T08:32:28.10 0.1 undecidable manual P 102 34.4433 50 -0.15 94
IV.PE3.EHZ. 2024-04-11T08:32:28.12 0.3 undecidable manual P 71 32.1456 50 0.21 70
IV.NARO.HHZ. 2024-04-11T08:32:28.53 0.3 undecidable manual P 88 37.2294 50 -0.16 70
IV.ATMC.EHZ. 2024-04-11T08:32:28.58 0.3 undecidable manual S 160 18.3705 119 -0.04 74
IV.ATVO.HHZ. 2024-04-11T08:32:27.31 0.3 undecidable manual P 136 33.8439 50 -0.85 57
IV.ATPI.EHZ. 2024-04-11T08:32:27.30 0.3 undecidable manual P 126 28.4493 50 -0.04 73
IV.BADI.EHZ. 2024-04-11T08:32:27.63 0.3 undecidable manual S 135 14.5743 124 0.13 73
IV.CRE.HHZ. 2024-04-11T08:32:26.97 0.3 undecidable manual S 278 13.3755 127 -0.2 72
IV.TSM6.DHZ.11 2024-04-11T08:32:26.32 0.3 undecidable manual P 130 22.5552 114 -0.01 74
IV.BADI.EHZ. 2024-04-11T08:32:25.05 0.1 undecidable manual P 135 14.5743 124 0.14 97
IV.ATMC.EHZ. 2024-04-11T08:32:25.59 0.1 undecidable manual P 160 18.3705 119 0.03 99
IV.CRE.HHZ. 2024-04-11T08:32:24.74 0.1 undecidable manual P 278 13.3755 127 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRE.HHN. ML:1.2 0.0001478285 0.2 AML other m 2024-04-11T08:32:27.67
IV.CRE.HHE. ML:0.9 0.00008961643 0.22 AML other m 2024-04-11T08:32:27.79
IV.BADI.EHN. ML:1.0 0.0000903 0.1 AML other m 2024-04-11T08:32:27.78
IV.BADI.EHE. ML:0.9 0.000081559705 0.06 AML other m 2024-04-11T08:32:27.84
IV.PIEI.HHE. ML:1.3 0.0000790143 0.08 AML other m 2024-04-11T08:32:33.87
IV.PIEI.HHN. ML:1.0 0.000043042823000000004 0.08 AML other m 2024-04-11T08:32:33.63
IV.ATPI.EHE. ML:0.8 0.0000305894045 0.26 AML other m 2024-04-11T08:32:31.89
IV.ATPI.EHN. ML:0.7 0.000023870565 0.16 AML other m 2024-04-11T08:32:32.43
IV.ATVO.HHE. ML:0.8 0.000026239955000000003 0.2 AML other m 2024-04-11T08:32:35.36
IV.ATVO.HHN. ML:0.4 0.0000111636657 0.24 AML other m 2024-04-11T08:32:33.72
IV.CAFI.HHE. ML:0.8 0.000025571225000000002 0.2 AML other m 2024-04-11T08:32:33.91
IV.CAFI.HHN. ML:1.0 0.000038164645 0.34 AML other m 2024-04-11T08:32:33.33
IV.PIEI.HNE. ML:1.2 0.00006993481 0.38 AML other m 2024-04-11T08:32:33.52
IV.ATMI.HHE. ML:1.2 0.00007335944999999999 0.26 AML other m 2024-04-11T08:32:33.84
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