Earthquake with magnitude of ML 0.8 on date 03-05-2020 and time 06:21:55 (Italy) in region 4 km N Chitignano (AR)

A magnitude ML 0.8 earthquake occured in region: 4 km N Chitignano (AR), on

  • 03-05-2020 04:21:55 (UTC)
  • 03-05-2020 06:21:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.7, 11.88 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.

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
Capolona AR 15 5438 42790
Castel San Niccolò AR 15 2707 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)
69 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)
87 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
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
Reviewed
Rev100
ML 0.8 2020-05-03
04:21:55
43.7 11.88 11 2020-05-03
04:34:23
Sala Sismica INGV-Roma 78792391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-03 04:21:55 ± 0.04
Latitude 43.70 ± 0.00
Longitude 11.88 ± 0.00
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 78792391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 408
Semi-minor axis of confidence ellipse (meter) 58
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.49553
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 78792391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-03 04:34:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PRMA.HHZ. 2020-05-03T04:22:21.49 3.0 positive manual Pn -0.04 0
IV.CIMA.HNZ. 2020-05-03T04:22:21.99 3.0 undecidable manual P 2.91 0
IV.ARVD.HHZ. 2020-05-03T04:22:12.88 3.0 undecidable manual P 1.87 0
IV.ATVO.HHZ. 2020-05-03T04:22:12.81 0.3 undecidable manual S 129 0.4955 50 0.29 66
IV.CSNT.HHE. 2020-05-03T04:22:11.95 0.3 undecidable manual S 243 0.4811 50 -0.16 68
IV.ATPI.EHZ. 2020-05-03T04:22:11.20 0.6 undecidable manual S 123 0.4515 50 -0.04 46
IV.LMD.HHZ. 2020-05-03T04:22:09.96 0.3 undecidable manual S 342 0.4002 50 0.26 67
IV.ATMC.EHZ. 2020-05-03T04:22:07.89 0.6 undecidable manual S 138 0.3381 50 0.03 48
IV.BADI.EHZ. 2020-05-03T04:22:07.29 0.3 undecidable manual S 125 0.3238 50 -0.16 70
IV.RUFI.EHZ. 2020-05-03T04:22:06.69 0.3 undecidable manual S 298 0.3013 50 -0.09 71
IV.PARC.HHZ. 2020-05-03T04:22:05.71 0.3 undecidable manual S 100 0.2644 50 0.02 73
IV.ATVO.HHZ. 2020-05-03T04:22:05.32 0.3 undecidable manual P 129 0.4955 50 0.05 69
IV.CSNT.HHE. 2020-05-03T04:22:05.57 0.3 undecidable manual P 243 0.4811 50 0.54 62
IV.ATPI.EHZ. 2020-05-03T04:22:04.51 0.6 undecidable manual P 123 0.4515 50 -0.02 47
IV.SFI.EHZ. 2020-05-03T04:22:04.01 0.3 undecidable manual S 354 0.2086 50 -0.03 73
IV.SSP9.EHZ. 2020-05-03T04:22:04.32 0.3 undecidable manual S 124 0.2203 50 -0.06 73
IV.LMD.HHZ. 2020-05-03T04:22:03.64 0.3 undecidable manual P 342 0.4002 50 0 71
IV.ATMC.EHZ. 2020-05-03T04:22:02.27 0.3 undecidable manual P 138 0.3381 50 -0.31 68
IV.BADI.EHZ. 2020-05-03T04:22:02.42 0.6 undecidable manual P 125 0.3238 50 0.08 47
IV.ASQU.HHZ. 2020-05-03T04:22:01.27 0.3 undecidable manual S 327 0.1187 130 -0.02 75
IV.RUFI.EHZ. 2020-05-03T04:22:01.69 0.3 undecidable manual P 298 0.3013 50 -0.26 69
IV.PARC.HHZ. 2020-05-03T04:22:01.26 0.1 undecidable manual P 100 0.2644 50 -0.06 96
IV.RINC.HHZ. 2020-05-03T04:22:01.47 0.6 undecidable manual P 314 0.2725 50 0.01 48
IV.CRE.HHZ. 2020-05-03T04:22:00.57 0.3 undecidable manual S 146 0.0944 136 -0.02 75
IV.SSP9.EHZ. 2020-05-03T04:22:00.65 0.3 undecidable manual P 124 0.2203 50 0.09 72
IV.SFI.EHZ. 2020-05-03T04:22:00.30 0.1 undecidable manual P 354 0.2086 50 -0.07 97
IV.CRE.HHZ. 2020-05-03T04:21:58.40 0.1 undecidable manual P 146 0.0944 136 0.02 100
IV.ASQU.HHZ. 2020-05-03T04:21:58.80 0.1 undecidable manual P 327 0.1187 130 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRE.HHN. ML:1.6 0.0004265 0.14 AML other m 2020-05-03T04:22:00.63
IV.ASQU.HHN. ML:0.9 7.53E-5 0.3 AML other m 2020-05-03T04:22:01.48
IV.PARC.HHN. ML:0.9 4.05E-5 0.22 AML other m 2020-05-03T04:22:05.85
IV.PARC.HHE. ML:0.8 3.24E-5 1.08 AML other m 2020-05-03T04:22:06.16
IV.PRMA.HHN. ML:3.1 0.0004675 1.76 AML other m 2020-05-03T04:22:25.07
IV.PRMA.HHE. ML:3 0.000439 0.2 AML other m 2020-05-03T04:22:25.01
IV.CRE.HHE. ML:1.2 0.00019146305 0.1184 AML other m 2020-05-03T04:22:00.61
IV.ASQU.HHE. ML:0.8 6.7413365E-5 0.4 AML other m 2020-05-03T04:22:02.13
IV.SFI.EHE. ML:0.5 2.091081E-5 0.16 AML other m 2020-05-03T04:22:04.54
IV.SFI.EHN. ML:0.5 2.234423E-5 1.4176 AML other m 2020-05-03T04:22:04.46
IV.SSP9.EHE. ML:0.9 4.9102135E-5 0.3392 AML other m 2020-05-03T04:22:05.09
IV.SSP9.EHN. ML:0.7 2.938801E-5 0.5984 AML other m 2020-05-03T04:22:04.64
IV.RUFI.EHE. ML:0.8 2.8931857E-5 1.92 AML other m 2020-05-03T04:22:07.66
IV.RUFI.EHN. ML:0.8 2.526337E-5 0.4608 AML other m 2020-05-03T04:22:08.13
IV.BADI.EHE. ML:0.8 2.600945E-5 0.1216 AML other m 2020-05-03T04:22:07.78
IV.BADI.EHN. ML:1 3.271443E-5 0.1792 AML other m 2020-05-03T04:22:07.78
IV.LMD.HHE. ML:0.7 1.51743695E-5 1.8016 AML other m 2020-05-03T04:22:10.99
IV.LMD.HHN. ML:0.9 2.585161E-5 2.56 AML other m 2020-05-03T04:22:09.56
IV.ATPI.EHE. ML:0.6 9.248887E-6 0.9408 AML other m 2020-05-03T04:22:11.94
IV.ATPI.EHN. ML:0.9 2.087163E-5 1.5808 AML other m 2020-05-03T04:22:12.77
IV.ATVO.HHE. ML:0.8 1.6515972E-5 0.9216 AML other m 2020-05-03T04:22:13.33
IV.ATVO.HHN. ML:0.9 2.080747E-5 2.16 AML other m 2020-05-03T04:22:14.16
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