Earthquake with magnitude of ML 0.9 on date 19-12-2018 and time 11:23:13 (Italy) in region 3 km SW Castel Focognano (AR)

A magnitude ML 0.9 earthquake occured in region: 3 km SW Castel Focognano (AR), on

  • 19-12-2018 10:23:13 (UTC)
  • 19-12-2018 11:23:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.63, 11.81 at 10 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
Castel Focognano AR 3 3149 3149
Talla AR 4 1062 4211
Chitignano AR 7 899 5110
Bibbiena AR 7 12241 17351
Ortignano Raggiolo AR 7 878 18229
Subbiano AR 8 6331 24560
Capolona AR 9 5438 29998
Poppi AR 11 6160 36158
Castiglion Fibocchi AR 12 2167 38325
Chiusi della Verna AR 13 2023 40348
Caprese Michelangelo AR 14 1426 41774
Castel San Niccolò AR 15 2707 44481
Loro Ciuffenna AR 15 5819 50300
Laterina AR 16 3517 53817
Pratovecchio Stia AR 19 5845 59662
Pieve Santo Stefano AR 19 3183 62845
Montemignaio AR 19 566 63411
Arezzo AR 20 99543 162954

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Arezzo (99543 inhabitants)
47 Km E of Firenze (382808 inhabitants)
52 Km NE of Siena (53903 inhabitants)
52 Km E of Scandicci (50609 inhabitants)
63 Km E of Prato (191150 inhabitants)
66 Km SW of Cesena (96758 inhabitants)
68 Km S of Forlì (117913 inhabitants)
73 Km S of Faenza (58541 inhabitants)
75 Km NW of Perugia (166134 inhabitants)
77 Km SW of Rimini (147750 inhabitants)
79 Km E of Pistoia (90315 inhabitants)
80 Km S of Imola (69797 inhabitants)
93 Km SW of Ravenna (159116 inhabitants)
94 Km W of Pesaro (94582 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 0.9 2018-12-19
10:23:13
43.63 11.81 10 2018-12-19
10:32:50
Sala Sismica INGV-Roma 63993511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-19 10:23:13 ± 0.31
Latitude 43.63 ± 0.01
Longitude 11.81 ± 0.02
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 63993511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2284
Semi-minor axis of confidence ellipse (meter) 589
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
Circular confidence region, given by single value of horizontal uncertainty (meter) 2280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 191
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44876
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 63993511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-19 10:32:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2018-12-19T10:24:46.98 3.0 undecidable manual Sg 14.88 0
OX.MPRI.HHZ. 2018-12-19T10:24:12.18 3.0 undecidable manual Sn -4.38 0
IT.VNF1.HGZ. 2018-12-19T10:23:51.55 3.0 positive manual Pn 0.19 0
IV.TOLF.HHZ. 2018-12-19T10:23:32.67 3.0 undecidable manual Pn -4.28 0
IV.LMD.HHZ. 2018-12-19T10:23:30.22 0.6 undecidable manual S 351 0.4488 50 0.39 45
IV.PE3.EHZ. 2018-12-19T10:23:27.45 3.0 undecidable manual Sn 0.73 0
IV.PARC.HHZ. 2018-12-19T10:23:25.72 0.6 undecidable manual S 87 0.3103 50 0 51
IV.SFI.HNZ. 2018-12-19T10:23:24.92 1.0 undecidable manual S 6 0.2716 50 0.35 24
IV.COR1.EHZ. 2018-12-19T10:23:23.10 3.0 positive manual P -0.46 0
IV.LMD.HHZ. 2018-12-19T10:23:22.80 0.1 undecidable manual P 351 0.4488 50 -0.22 94
IV.ASQU.HHZ. 2018-12-19T10:23:21.22 0.3 undecidable manual S 355 0.1628 118 0.42 71
IV.CAFI.HHE. 2018-12-19T10:23:21.72 0.6 undecidable manual P 160 0.3256 50 0.82 40
IV.PARC.HHZ. 2018-12-19T10:23:20.59 0.1 undecidable manual P 87 0.3103 50 -0.06 100
IV.CRE.HHZ. 2018-12-19T10:23:19.12 0.3 undecidable manual S 99 0.1034 129 0.23 75
IV.IMOL.HNZ. 2018-12-19T10:23:19.89 3.0 positive manual P 0.01 0
IV.SFI.HNZ. 2018-12-19T10:23:19.57 0.3 undecidable manual P 6 0.2716 50 -0.41 70
IV.PE3.EHZ. 2018-12-19T10:23:18.86 3.0 positive manual P 0.1 0
IV.ASQU.HHZ. 2018-12-19T10:23:17.50 0.3 undecidable manual P 355 0.1628 118 -0.3 73
IV.CRE.HHZ. 2018-12-19T10:23:16.40 0.1 negative manual P 99 0.1034 129 -0.3 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRE.HHE. ML:0.8 8.18E-5 0.66 AML other m 2018-12-19T10:23:19.38
IV.CRE.HHN. ML:1 0.0001195 1.38 AML other m 2018-12-19T10:23:20.11
IV.ASQU.HHE. ML:0.9 5.91E-5 1.32 AML other m 2018-12-19T10:23:27.96
IV.ASQU.HHN. ML:0.8 5.585E-5 0.8 AML other m 2018-12-19T10:23:31.50
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