Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 03-05-2020 and time 00:42:07 (UTC) in region 4 km N Chitignano (AR)

A magnitude ML 1.1 earthquake occured in region: 4 km N Chitignano (AR), on

  • 03-05-2020 00:42:07 (UTC)
  • 03-05-2020 02:42:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6970, 11.8800 at 11 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
Chitignano AR 4 899 899
Chiusi della Verna AR 5 2023 2922
Bibbiena AR 5 12241 15163
Castel Focognano AR 6 3149 18312
Poppi AR 10 6160 24472
Ortignano Raggiolo AR 10 878 25350
Caprese Michelangelo AR 10 1426 26776
Talla AR 13 1062 27838
Subbiano AR 13 6331 34169
Pieve Santo Stefano AR 14 3183 37352
Castel San Niccolò AR 15 2707 40059
Capolona AR 15 5438 45497
Verghereto FC 15 1907 47404
Pratovecchio Stia AR 16 5845 53249
Bagno di Romagna FC 20 6026 59275

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of Arezzo (99543 inhabitants)
51 Km E of Firenze (382808 inhabitants)
56 Km E of Scandicci (50609 inhabitants)
57 Km SW of Cesena (96758 inhabitants)
60 Km S of Forlì (117913 inhabitants)
61 Km NE of Siena (53903 inhabitants)
66 Km S of Faenza (58541 inhabitants)
66 Km E of Prato (191150 inhabitants)
68 Km SW of Rimini (147750 inhabitants)
74 Km S of Imola (69797 inhabitants)
77 Km NW of Perugia (166134 inhabitants)
82 Km E of Pistoia (90315 inhabitants)
84 Km SW of Ravenna (159116 inhabitants)
86 Km W of Pesaro (94582 inhabitants)
93 Km W of Fano (60888 inhabitants)
99 Km SE of Bologna (386663 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 1.1 2020-05-03
00:42:07		 43.6973 11.8795 11 2020-05-03
00:56:34		 Sala Sismica INGV-Roma 78785811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-03 00:42:07 ± 0.04
Latitude 43.6973 ± 0.0045
Longitude 11.8795 ± 0.0062
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78785811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 694
Semi-minor axis of confidence ellipse (meter) 56
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
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) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51801
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 78785811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-03 00:56:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-05-03T00:42:27.39 3.0 undecidable manual P -1.82 0
IV.SEI.HHZ. 2020-05-03T00:42:18.68 0.6 undecidable manual P 314 57.498 50 0.37 43
IV.ATVO.HHZ. 2020-05-03T00:42:18.02 0.6 undecidable manual P 129 55.0005 50 0.1 45
IV.PARC.HHZ. 2020-05-03T00:42:18.31 0.3 undecidable manual S 101 29.3484 50 -0.04 72
IV.PIEI.HHZ. 2020-05-03T00:42:18.00 0.6 undecidable manual P 109 55.5999 50 -0.02 46
IV.ATMI.HHZ. 2020-05-03T00:42:17.16 0.3 undecidable manual P 142 51.0156 50 -0.15 68
IV.ATPI.EHZ. 2020-05-03T00:42:17.11 0.3 undecidable manual P 123 50.1165 50 -0.07 69
IT.SNS1.HNZ. 2020-05-03T00:42:17.32 0.6 undecidable manual S 124 24.4533 50 0.27 46
IV.RONT.HHZ. 2020-05-03T00:42:17.25 0.3 undecidable manual P 313 48.5181 50 0.32 66
IV.LMD.HHZ. 2020-05-03T00:42:16.21 0.3 undecidable manual P 342 44.3223 50 -0.07 70
IV.SFI.EHZ. 2020-05-03T00:42:16.73 0.3 undecidable manual S 354 23.1546 50 0.02 73
IV.BADI.EHZ. 2020-05-03T00:42:14.93 0.3 undecidable manual P 125 35.9418 50 -0.06 71
IV.RUFI.EHZ. 2020-05-03T00:42:14.40 0.3 undecidable manual P 298 33.5442 50 -0.21 69
IT.SNS1.HNZ. 2020-05-03T00:42:13.39 0.3 undecidable manual P 124 24.4533 50 0.17 71
IV.CRE.HHZ. 2020-05-03T00:42:13.13 0.1 undecidable manual S 146 10.4784 135 -0.02 100
IV.RINC.HHZ. 2020-05-03T00:42:13.88 0.3 undecidable manual P 314 30.2475 50 -0.23 69
IV.SSP9.EHZ. 2020-05-03T00:42:13.25 0.3 undecidable manual P 124 24.4533 50 0.04 73
IV.ASQU.HHZ. 2020-05-03T00:42:13.91 0.3 undecidable manual S 327 13.1757 129 0.06 74
IV.PARC.HHZ. 2020-05-03T00:42:13.91 0.1 undecidable manual P 101 29.3484 50 -0.06 96
IV.SFI.EHZ. 2020-05-03T00:42:12.91 0.1 undecidable manual P 354 23.1546 50 -0.11 96
IV.ASQU.HHZ. 2020-05-03T00:42:11.40 0.1 undecidable manual P 327 13.1757 129 0.03 99
IV.CRE.HHZ. 2020-05-03T00:42:10.95 0.1 undecidable manual P 146 10.4784 135 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRE.HHN. ML:1.8 0.0007635000000000001 0.14 AML other m 2020-05-03T00:42:13.20
IV.CRE.HHE. ML:1.5 0.00040300000000000004 1.44 AML other m 2020-05-03T00:42:13.19
IV.ASQU.HHN. ML:1.2 0.000152 0.3 AML other m 2020-05-03T00:42:14.06
IV.ASQU.HHE. ML:1.0 0.000117 0.82 AML other m 2020-05-03T00:42:15.50
IV.SFI.EHE. ML:0.8 0.000040999999999999994 1.24 AML other m 2020-05-03T00:42:17.25
IV.PARC.HHN. ML:1.1 0.00006345000000000001 1.12 AML other m 2020-05-03T00:42:18.66
IV.PARC.HHE. ML:1.0 0.0000543 1.2 AML other m 2020-05-03T00:42:18.13
IV.SFI.EHN. ML:0.8 0.000039750000000000004 0.42 AML other m 2020-05-03T00:42:18.92
IV.ATMI.HHN. ML:1.2 0.000040300000000000004 0.46 AML other m 2020-05-03T00:42:27.50
IV.ATMI.HHE. ML:1.2 0.000038900000000000004 0.44 AML other m 2020-05-03T00:42:28.19
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