Earthquake with magnitude of ML 1.3 on date 23-03-2020 and time 03:34:32 (Italy) in region 4 km N Anghiari (AR)

A magnitude ML 1.3 earthquake occured in region: 4 km N Anghiari (AR), on

  • 23-03-2020 02:34:32 (UTC)
  • 23-03-2020 03:34:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.58, 12.04 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.

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 4 5638 5638
Sansepolcro AR 8 15884 21522
Caprese Michelangelo AR 9 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
Arezzo AR 18 99543 156950
Badia Tedalda AR 18 1087 158037
Monte Santa Maria Tiberina PG 18 1183 159220
Castel Focognano AR 19 3149 162369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Arezzo (99543 inhabitants)
59 Km NW of Perugia (166134 inhabitants)
64 Km S of Cesena (96758 inhabitants)
64 Km E of Siena (53903 inhabitants)
67 Km E of Firenze (382808 inhabitants)
68 Km SW of Rimini (147750 inhabitants)
72 Km S of Forlì (117913 inhabitants)
72 Km E of Scandicci (50609 inhabitants)
79 Km W of Pesaro (94582 inhabitants)
80 Km S of Faenza (58541 inhabitants)
83 Km E of Prato (191150 inhabitants)
84 Km W of Fano (60888 inhabitants)
87 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.3 2020-03-23
02:34:32
43.58 12.04 9 2020-03-23
02:45:32
Sala Sismica INGV-Roma 77483291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-23 02:34:32 ± 0.07
Latitude 43.58 ± 0.01
Longitude 12.04 ± 0.01
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 77483291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 609
Semi-minor axis of confidence ellipse (meter) 268
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 29
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.55668
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 77483291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-23 02:45:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SFI.HNN. 2020-03-23T02:34:46.15 0.6 undecidable manual S 336 0.3552 50 0.25 45
IV.PE3.EHZ. 2020-03-23T02:34:46.23 0.3 undecidable manual S 70 0.3471 50 0.57 62
IV.NARO.HHZ. 2020-03-23T02:34:46.68 0.6 undecidable manual S 85 0.3894 50 -0.23 45
IV.CSNT.HHN. 2020-03-23T02:34:44.07 0.1 undecidable manual P 259 0.5567 50 0.41 84
IV.ATVO.HHZ. 2020-03-23T02:34:44.78 0.6 undecidable manual S 127 0.3283 50 -0.32 45
IV.ATMI.HHZ. 2020-03-23T02:34:44.01 0.6 undecidable manual S 146 0.2932 50 -0.06 47
IV.ATPI.EHZ. 2020-03-23T02:34:43.73 0.3 undecidable manual S 116 0.2896 50 -0.21 69
IV.APEC.HHZ. 2020-03-23T02:34:43.53 0.3 undecidable manual S 94 0.2725 107 0.12 71
IV.RUFI.EHE. 2020-03-23T02:34:41.98 0.1 undecidable manual P 304 0.4649 50 -0.11 91
IV.NARO.HHZ. 2020-03-23T02:34:40.31 1.0 undecidable manual P 85 0.3894 50 -0.49 21
IV.PE3.EHZ. 2020-03-23T02:34:40.19 0.1 positive manual P 70 0.3471 50 0.12 93
IV.ATVA.EHZ. 2020-03-23T02:34:40.91 0.1 undecidable manual P 150 0.3471 50 0.83 75
IV.PARC.HHZ. 2020-03-23T02:34:39.00 0.6 undecidable manual S 64 0.1565 117 -0.25 47
IV.BADI.EHZ. 2020-03-23T02:34:39.41 0.6 undecidable manual S 115 0.161 117 0.04 49
IV.SFI.HNN. 2020-03-23T02:34:39.98 0.1 undecidable manual P 336 0.3552 50 -0.24 90
IV.ATVO.HHZ. 2020-03-23T02:34:39.68 0.1 undecidable manual P 127 0.3283 50 -0.07 94
IV.ATMC.EHE. 2020-03-23T02:34:39.63 0.6 undecidable manual S 141 0.17 115 -0.08 48
IV.ATMI.HHZ. 2020-03-23T02:34:38.61 0.6 negative manual P 146 0.2932 50 -0.55 42
IV.ATPI.EHZ. 2020-03-23T02:34:38.82 0.6 negative manual P 116 0.2896 50 -0.26 46
IV.ASQU.HHZ. 2020-03-23T02:34:38.84 0.1 undecidable manual P 320 0.2851 50 -0.17 93
IV.APEC.HHZ. 2020-03-23T02:34:38.58 0.6 negative manual P 94 0.2725 107 -0.19 46
IT.SNS1.HNN. 2020-03-23T02:34:36.76 0.6 undecidable manual S 95 0.063 142 0.36 47
IV.ATMC.EHE. 2020-03-23T02:34:36.44 0.1 undecidable manual P 141 0.17 115 -0.2 94
IV.PARC.HHZ. 2020-03-23T02:34:36.34 0.1 positive manual P 64 0.1565 117 -0.03 98
IV.SSP9.EHZ. 2020-03-23T02:34:36.51 0.6 undecidable manual S 95 0.063 142 0.11 49
IV.BADI.EHZ. 2020-03-23T02:34:36.48 0.3 negative manual P 115 0.161 117 0.03 73
IV.CRE.HHZ. 2020-03-23T02:34:36.63 0.6 undecidable manual S 301 0.0782 136 -0.15 49
IV.CRE.HHZ. 2020-03-23T02:34:34.94 0.1 positive manual P 301 0.0782 136 -0.01 100
IT.SNS1.HNN. 2020-03-23T02:34:34.78 0.1 undecidable manual P 95 0.063 142 0.05 99
IV.SSP9.EHZ. 2020-03-23T02:34:34.76 0.1 positive manual P 95 0.063 142 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSP9.EHE. ML:1.7 0.00078786735 0.28 AML other m 2020-03-23T02:34:37.68
IV.SSP9.EHN. ML:1.7 0.00078398045 0.32 AML other m 2020-03-23T02:34:38.08
IV.CRE.HHE. ML:1.2 0.0002304167 0.2208 AML other m 2020-03-23T02:34:36.86
IV.CRE.HHN. ML:1.7 0.0007525323 0.2192 AML other m 2020-03-23T02:34:36.77
IV.PARC.HHE. ML:1.4 0.0001991727 0.16 AML other m 2020-03-23T02:34:39.99
IV.PARC.HHN. ML:1.4 0.0002235949 0.2592 AML other m 2020-03-23T02:34:39.06
IV.BADI.EHE. ML:1 8.4285565E-5 0.44 AML other m 2020-03-23T02:34:41.83
IV.BADI.EHN. ML:1 7.600829E-5 0.3392 AML other m 2020-03-23T02:34:42.20
IV.APEC.HHE. ML:1.1 5.680865E-5 0.28 AML other m 2020-03-23T02:34:48.12
IV.APEC.HHN. ML:1.3 9.0067215E-5 0.1792 AML other m 2020-03-23T02:34:43.61
IV.APEC.HNE. ML:2.2 0.0007370925 1.64 AML other m 2020-03-23T02:34:49.07
IV.APEC.HNN. ML:2.2 0.0007956904 1.1808 AML other m 2020-03-23T02:34:49.35
IV.ATMI.HHE. ML:1.2 6.45291E-5 0.2992 AML other m 2020-03-23T02:34:45.81
IV.ATMI.HHN. ML:1.1 5.9741485E-5 3 AML other m 2020-03-23T02:34:43.86
IV.ATPI.EHE. ML:1.1 5.406586E-5 2.2608 AML other m 2020-03-23T02:34:44.82
IV.ATPI.EHN. ML:0.9 3.459833E-5 1.4016 AML other m 2020-03-23T02:34:44.83
IV.ATVO.HHE. ML:1.1 4.7864065E-5 1.56 AML other m 2020-03-23T02:34:44.81
IV.PE3.EHE. ML:1.9 0.00028297765 0.36 AML other m 2020-03-23T02:34:46.75
IV.PE3.EHN. ML:2 0.000334563 3.12 AML other m 2020-03-23T02:34:47.01
IV.NARO.HHE. ML:1.2 5.4885285E-5 2.92 AML other m 2020-03-23T02:34:48.47
IV.NARO.HHN. ML:1.1 3.9609525E-5 0.84 AML other m 2020-03-23T02:34:46.82
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download