Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 11-02-2023 and time 05:42:53 (UTC) in region 5 km NE Città di Castello (PG)

A magnitude ML 0.8 earthquake occured in region: 5 km NE Città di Castello (PG), on

  • 11-02-2023 05:42:53 (UTC)
  • 11-02-2023 06:42:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4950, 12.2710 at 6 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.

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
Città di Castello PG 5 39913 39913
San Giustino PG 10 11297 51210
Monte Santa Maria Tiberina PG 11 1183 52393
Citerna PG 12 3531 55924
Monterchi AR 13 1757 57681
Sansepolcro AR 13 15884 73565
Apecchio PU 14 1882 75447
Pietralunga PG 15 2111 77558
Montone PG 15 1680 79238
Anghiari AR 18 5638 84876
Mercatello sul Metauro PU 18 1378 86254
Borgo Pace PU 18 606 86860

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Arezzo (99543 inhabitants)
44 Km N of Perugia (166134 inhabitants)
67 Km SW of Rimini (147750 inhabitants)
69 Km NW of Foligno (57155 inhabitants)
69 Km SW of Pesaro (94582 inhabitants)
72 Km S of Cesena (96758 inhabitants)
72 Km SW of Fano (60888 inhabitants)
78 Km E of Siena (53903 inhabitants)
83 Km S of Forlì (117913 inhabitants)
87 Km E of Firenze (382808 inhabitants)
92 Km E of Scandicci (50609 inhabitants)
93 Km SE of Faenza (58541 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 0.8 2023-02-11
05:42:53		 43.4948 12.2707 6 2023-02-11
06:37:32		 Sala Sismica INGV-Roma 114335021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-11 05:42:53 ± 0.16
Latitude 43.4948 ± 0.0036
Longitude 12.2707 ± 0.0062
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 114335021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 437
Semi-minor axis of confidence ellipse (meter) 261
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 50
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 169
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.02428
Epicentral distance of station farthest from the epicenter (degree) 0.25271
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 20
Type of magnitude ML
Reference to an origin 114335021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-11 06:37:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2023-02-11T05:43:03.36 0.1 undecidable manual S 63 28.0497 103 0.12 94
IV.PIEI.HHZ. 2023-02-11T05:43:00.92 0.6 undecidable manual S 78 21.7671 106 -0.2 47
IV.ATVO.HHZ. 2023-02-11T05:42:59.56 0.3 undecidable manual S 139 16.5723 111 0.12 72
IV.PARC.HHZ. 2023-02-11T05:42:59.63 0.1 undecidable manual S 351 17.2716 110 -0.02 98
IV.NARO.HHZ. 2023-02-11T05:42:59.43 0.1 undecidable manual P 63 28.0497 103 0.41 89
IV.APEC.HHZ. 2023-02-11T05:42:58.58 0.1 undecidable manual S 59 13.875 115 0 99
IV.ATPI.EHZ. 2023-02-11T05:42:57.76 0.6 undecidable manual S 115 11.6772 119 -0.12 49
IV.PIEI.HHZ. 2023-02-11T05:42:57.43 0.1 undecidable manual P 78 21.7671 106 -0.37 90
IV.PARC.HHZ. 2023-02-11T05:42:56.86 0.1 undecidable manual P 351 17.2716 110 -0.09 97
IV.ATVO.HHZ. 2023-02-11T05:42:56.82 0.1 undecidable manual P 139 16.5723 111 -0.01 98
IV.APEC.HHZ. 2023-02-11T05:42:56.33 0.1 undecidable manual P 59 13.875 115 0 99
IV.BADI.EHZ. 2023-02-11T05:42:55.69 0.6 undecidable manual S 308 2.6973 157 0.02 50
IV.ATPI.EHZ. 2023-02-11T05:42:55.90 0.1 undecidable manual P 115 11.6772 119 -0.03 99
IV.BADI.EHZ. 2023-02-11T05:42:54.70 0.1 undecidable manual P 308 2.6973 157 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHN. ML:1.0 0.00010829999999999999 0.16 AML other m 2023-02-11T05:42:58.77
IV.APEC.HHE. ML:0.8 0.000063401715 0.1216 AML other m 2023-02-11T05:42:59.25
IV.BADI.EHE. ML:0.0 0.0003524465 0.1216 AML other m 2023-02-11T05:42:55.80
IV.BADI.EHN. ML:0.0 0.00019635818 0.0992 AML other m 2023-02-11T05:42:55.89
IV.ATPI.HNE. ML:0.9 0.000119221035 1.8784 AML other m 2023-02-11T05:43:00.32
IV.ATPI.HNN. ML:1.1 0.00018178564999999999 1.2896 AML other m 2023-02-11T05:43:01.54
IV.ATPI.EHE. ML:0.3 0.000026910505 1.1008 AML other m 2023-02-11T05:42:58.24
IV.ATPI.EHN. ML:0.3 0.000026540635 0.1216 AML other m 2023-02-11T05:42:58.24
IV.APEC.HNE. ML:1.9 0.00101849875 3.4304 AML other m 2023-02-11T05:43:00.41
IV.APEC.HNN. ML:2.0 0.001097872 5.8976 AML other m 2023-02-11T05:42:59.25
IV.ATVO.HNE. ML:1.2 0.0001440443 0.9984 AML other m 2023-02-11T05:43:00.96
IV.ATVO.HNN. ML:1.1 0.00012655395499999998 1.3792 AML other m 2023-02-11T05:43:00.04
IV.ATVO.HHE. ML:0.5 0.000031741055000000004 1.7184 AML other m 2023-02-11T05:43:01.62
IV.ATVO.HHN. ML:0.6 0.00003839944500000001 1.3792 AML other m 2023-02-11T05:43:03.40
IV.PARC.HHE. ML:0.4 0.000025547455 1.1008 AML other m 2023-02-11T05:43:02.20
IV.PARC.HHN. ML:0.6 0.00003295999 3.5392 AML other m 2023-02-11T05:43:04.48
IV.PIEI.HHE. ML:0.4 0.000020280455000000004 2.4608 AML other m 2023-02-11T05:43:00.75
IV.PIEI.HHN. ML:0.3 0.000016278670000000002 3.7184 AML other m 2023-02-11T05:42:57.91
IV.PIEI.HNE. ML:1.4 0.00017757295 3.3824 AML other m 2023-02-11T05:43:06.47
IV.PIEI.HNN. ML:1.3 0.00013420775000000002 1.8208 AML other m 2023-02-11T05:43:03.52
IV.NARO.HHE. ML:0.7 0.000027724504999999996 1.9776 AML other m 2023-02-11T05:43:05.33
IV.NARO.HHN. ML:0.7 0.00002473155 2.7808 AML other m 2023-02-11T05:43:07.12
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