Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 09-04-2020 and time 11:37:28 (Italy) in region 5 km N Anghiari (AR)

A magnitude ML 0.8 earthquake occured in region: 5 km N Anghiari (AR), on

  • 09-04-2020 09:37:28 (UTC)
  • 09-04-2020 11:37:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5830, 12.0470 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.

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
Anghiari AR 5 5638 5638
Sansepolcro AR 8 15884 21522
Caprese Michelangelo AR 8 1426 22948
Pieve Santo Stefano AR 10 3183 26131
Citerna PG 11 3531 29662
San Giustino PG 11 11297 40959
Monterchi AR 12 1757 42716
Subbiano AR 14 6331 49047
Capolona AR 15 5438 54485
Chiusi della Verna AR 16 2023 56508
Chitignano AR 16 899 57407
Badia Tedalda AR 18 1087 58494
Arezzo AR 18 99543 158037
Castel Focognano AR 19 3149 161186
Monte Santa Maria Tiberina PG 19 1183 162369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Arezzo (99543 inhabitants)
60 Km NW of Perugia (166134 inhabitants)
64 Km S of Cesena (96758 inhabitants)
65 Km E of Siena (53903 inhabitants)
67 Km E of Firenze (382808 inhabitants)
68 Km SW of Rimini (147750 inhabitants)
71 Km S of Forlì (117913 inhabitants)
72 Km E of Scandicci (50609 inhabitants)
79 Km W of Pesaro (94582 inhabitants)
79 Km S of Faenza (58541 inhabitants)
83 Km E of Prato (191150 inhabitants)
84 Km W of Fano (60888 inhabitants)
88 Km NW of Foligno (57155 inhabitants)
90 Km SE of Imola (69797 inhabitants)
94 Km S of Ravenna (159116 inhabitants)
99 Km E of Pistoia (90315 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 2020-04-09
09:37:28		 43.5832 12.0467 9 2020-04-09
09:50:36		 Sala Sismica INGV-Roma 78037911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-09 09:37:28 ± 0.07
Latitude 43.5832 ± 0.0054
Longitude 12.0467 ± 0.0050
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78037911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 672
Semi-minor axis of confidence ellipse (meter) 121
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 209
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 13
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35703
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 78037911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-09 09:50:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.VAE.HHZ. 2020-04-09T09:38:55.22 3.0 undecidable manual Pn 3.41 0
IV.SGTA.HHZ. 2020-04-09T09:38:52.50 3.0 undecidable manual Sn -0.14 0
IV.CPTP.HHZ. 2020-04-09T09:38:50.68 3.0 negative manual Pn -1.39 0
GU.CANO.HHZ. 2020-04-09T09:38:50.04 3.0 undecidable manual Sg 5.59 0
IV.SPS2.HHZ. 2020-04-09T09:38:46.47 3.0 positive manual Pg 7.42 0
IV.CIGN.HHZ. 2020-04-09T09:38:45.06 3.0 undecidable manual Sg 7.07 0
IV.ROSPO.HHZ. 2020-04-09T09:38:43.22 3.0 undecidable manual Sg 12.49 0
IV.IFOR.HHZ. 2020-04-09T09:38:38.86 3.0 undecidable manual Sn -4.7 0
IV.QLNO.HHZ. 2020-04-09T09:38:36.08 3.0 undecidable manual Sn -7.5 0
IV.TDS.HHZ. 2020-04-09T09:38:34.85 3.0 undecidable manual Pn -0.26 0
IV.MAGA.HHZ. 2020-04-09T09:38:27.73 3.0 undecidable manual Sn -9.99 0
IV.OVO.HHZ. 2020-04-09T09:38:20.76 3.0 positive manual Pg 10.85 0
IV.IFOR.HHZ. 2020-04-09T09:38:13.11 3.0 undecidable manual Pg 4.75 0
IV.TRTR.HHZ. 2020-04-09T09:38:08.73 3.0 undecidable manual Sg 0.41 0
MN.TRI.HHZ. 2020-04-09T09:38:02.94 3.0 positive manual Pn -3.39 0
IV.MNTV.HNZ. 2020-04-09T09:38:00.28 3.0 positive manual Pg 2.79 0
IV.CAMP.HHZ. 2020-04-09T09:37:57.25 3.0 undecidable manual Sn -6.05 0
IV.ROSPO.HHZ. 2020-04-09T09:37:54.61 3.0 undecidable manual Pn -6.54 0
IV.RIBO.EHZ.01 2020-04-09T09:37:51.78 3.0 undecidable manual Sg 0.21 0
IV.FOSV.EHZ. 2020-04-09T09:37:43.37 3.0 undecidable manual Sn 0.93 0
IV.PIEI.HHZ. 2020-04-09T09:37:41.59 0.3 undecidable manual S 97 39.627 50 -0.05 76
IV.ASQU.HHZ. 2020-04-09T09:37:39.12 0.6 undecidable manual S 319 31.4463 50 -0.33 48
IV.RIBO.EHZ.01 2020-04-09T09:37:37.65 3.0 negative manual Pn -1.5 0
IV.SFI.EHZ. 2020-04-09T09:37:36.02 0.3 undecidable manual P 336 39.1275 50 0.17 74
IV.PIEI.HHZ. 2020-04-09T09:37:35.64 0.3 undecidable manual P 97 39.627 50 -0.29 72
IV.FIR.HHZ. 2020-04-09T09:37:35.74 3.0 undecidable manual Pn -2.9 0
IV.ATMC.EHN. 2020-04-09T09:37:35.52 0.3 undecidable manual S 142 19.1697 115 0.07 78
IV.CPGN.HNE. 2020-04-09T09:37:35.58 1.0 undecidable manual P 42 32.6451 50 0.72 21
IV.ASQU.HHZ. 2020-04-09T09:37:34.84 0.1 undecidable manual P 319 31.4463 50 0.17 100
IV.PARC.HHZ. 2020-04-09T09:37:34.71 0.3 undecidable manual S 65 17.0718 118 -0.09 78
IV.ATMC.EHN. 2020-04-09T09:37:32.31 0.3 undecidable manual P 142 19.1697 115 -0.05 79
IV.CRE.HHZ. 2020-04-09T09:37:32.29 0.3 undecidable manual S 298 8.5803 136 -0.13 79
IV.PARC.HHZ. 2020-04-09T09:37:32.00 0.3 undecidable manual P 65 17.0718 118 0.02 79
IV.APEC.HHZ. 2020-04-09T09:37:30.57 3.0 undecidable manual Pn -1.23 0
IT.SNS1.HNE. 2020-04-09T09:37:30.58 0.6 undecidable manual P 99 6.8931 142 0.2 52
IV.CRE.HHZ. 2020-04-09T09:37:30.60 0.3 undecidable manual P 298 8.5803 136 0 81
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRE.HHN. ML:1.3 0.000309 0.22 AML other m 2020-04-09T09:37:32.52
IV.CRE.HHE. ML:0.9 0.00011225 0.54 AML other m 2020-04-09T09:37:32.87
IV.PARC.HHN. ML:1.0 0.0000811 0.56 AML other m 2020-04-09T09:37:34.93
IV.PARC.HHE. ML:0.9 0.0000711 0.14 AML other m 2020-04-09T09:37:35.79
IV.ASQU.HHE. ML:0.3 0.0000097516245 0.48 AML other m 2020-04-09T09:37:39.40
IV.ASQU.HHN. ML:0.5 0.0000143165 0.1792 AML other m 2020-04-09T09:37:40.85
IV.PIEI.HHE. ML:0.9 0.000028829534999999998 0.1152 AML other m 2020-04-09T09:37:42.40
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