INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.5 on date 14-02-2019 and time 15:39:14 (Italy) in region 3 km SW Arcidosso (GR)

A magnitude ML 1.5 earthquake occured in region: 3 km SW Arcidosso (GR), on

  • 14-02-2019 14:39:14 (UTC)
  • 14-02-2019 15:39:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.85, 11.52 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
Arcidosso GR 3 4285 4285
Castel del Piano GR 5 4690 8975
Santa Fiora GR 6 2622 11597
Roccalbegna GR 7 1044 12641
Seggiano GR 9 961 13602
Cinigiano GR 11 2618 16220
Semproniano GR 14 1059 17279
Abbadia San Salvatore SI 14 6444 23723
Piancastagnaio SI 15 4230 27953
Castell'Azzara GR 17 1476 29429
Castiglione d'Orcia SI 19 2346 31775
Campagnatico GR 20 2412 34187

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Grosseto (82087 inhabitants)
54 Km S of Siena (53903 inhabitants)
68 Km NW of Viterbo (67173 inhabitants)
75 Km SW of Arezzo (99543 inhabitants)
77 Km W of Perugia (166134 inhabitants)
87 Km N of Civitavecchia (52991 inhabitants)
98 Km W of Foligno (57155 inhabitants)
98 Km W of Terni (111501 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 1.5 2019-02-14
14:39:14
42.85 11.52 9 2019-02-14
15:37:06
Sala Sismica INGV-Roma 65541531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-14 14:39:14 ± 0.1
Latitude 42.85 ± 0.01
Longitude 11.52 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65541531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 955
Semi-minor axis of confidence ellipse (meter) 817
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 137
Circular confidence region, given by single value of horizontal uncertainty (meter) 950
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44426
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 65541531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-14 15:37:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.SLC1.HGZ. 2019-02-14T14:41:02.19 3.0 undecidable manual Sn -0.21 0
IV.MTGR.HHZ. 2019-02-14T14:40:39.83 3.0 negative manual Pg 13.55 0
IV.MCRV.HHZ. 2019-02-14T14:40:18.40 3.0 undecidable manual Pg 15.07 0
CH.MUGIO.HHZ. 2019-02-14T14:39:56.55 3.0 undecidable manual Pg 8.41 0
IV.TRTR.HHZ. 2019-02-14T14:39:42.71 3.0 negative manual Pg 5.17 0
IV.FROS.CHE. 2019-02-14T14:39:24.08 0.6 undecidable manual P 324 0.4443 50 0.05 47
IV.RIBO.EHE.01 2019-02-14T14:39:22.11 0.3 undecidable manual P 286 0.357 50 -0.42 66
TV.SF03.EHE. 2019-02-14T14:39:20.72 0.3 undecidable manual S 111 0.134 121 -0.09 74
TV.SF11.HHE. 2019-02-14T14:39:20.12 0.3 undecidable manual S 82 0.1214 124 -0.28 71
IV.MCIV.CHZ. 2019-02-14T14:39:20.90 0.3 undecidable manual S 121 0.1385 121 -0.07 74
TV.SF14.HHE. 2019-02-14T14:39:20.06 0.3 undecidable manual S 143 0.1205 124 -0.31 71
TV.SF04.EHZ. 2019-02-14T14:39:19.76 0.3 undecidable manual S 98 0.1079 127 -0.21 72
TV.SF13.HHE. 2019-02-14T14:39:19.24 0.3 undecidable manual S 113 0.0827 135 -0.02 76
IV.MCIV.CHZ. 2019-02-14T14:39:18.60 0.1 undecidable manual P 121 0.1385 121 0.26 95
TV.SF01.EHZ. 2019-02-14T14:39:18.43 0.1 undecidable manual S 138 0.0531 147 -0.08 100
TV.SF14.HHE. 2019-02-14T14:39:18.02 0.1 undecidable manual P 143 0.1205 124 0.02 100
TV.SF03.EHE. 2019-02-14T14:39:18.48 0.1 undecidable manual P 111 0.134 121 0.23 96
TV.SF11.HHE. 2019-02-14T14:39:18.07 0.6 undecidable manual P 82 0.1214 124 0.06 50
TV.SF13.HHE. 2019-02-14T14:39:17.61 0.1 undecidable manual P 113 0.0827 135 0.25 96
TV.SF01.EHZ. 2019-02-14T14:39:17.08 0.1 undecidable manual P 138 0.0531 147 0.15 99
TV.SF04.EHZ. 2019-02-14T14:39:17.88 0.1 undecidable manual P 98 0.1079 127 0.11 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
TV.SF01.EHN. ML:1.5 0.000561 1.04 AML other m 2019-02-14T14:39:18.59
TV.SF01.EHE. ML:1.4 0.0004595 0.96 AML other m 2019-02-14T14:39:19.38
TV.SF04.EHE. ML:2 0.0010585 0.24 AML other m 2019-02-14T14:39:20.54
TV.SF04.EHN. ML:1.8 0.000781 0.16 AML other m 2019-02-14T14:39:21.08
IV.MCIV.CHE. ML:1.5 0.0002875 0.24 AML other m 2019-02-14T14:39:21.68
IV.MCIV.CHN. ML:1.6 0.0003625 0.24 AML other m 2019-02-14T14:39:21.71
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