Earthquake (quarry blast) with magnitude of ML 1.3 on date 02-01-2019 and time 05:39:50 (Italy) in region 2 km E Roccalbegna (GR)

A magnitude ML 1.3 (quarry blast) earthquake occured in region: 2 km E Roccalbegna (GR), on

  • 02-01-2019 04:39:50 (UTC)
  • 02-01-2019 05:39:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.78, 11.53 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Roccalbegna GR 2 1044 1044
Semproniano GR 6 1059 2103
Santa Fiora GR 7 2622 4725
Arcidosso GR 10 4285 9010
Castel del Piano GR 13 4690 13700
Castell'Azzara GR 14 1476 15176
Piancastagnaio SI 15 4230 19406
Cinigiano GR 16 2618 22024
Seggiano GR 17 961 22985
Abbadia San Salvatore SI 17 6444 29429
Sorano GR 19 3428 32857
Scansano GR 19 4427 37284
Pitigliano GR 20 3818 41102

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Grosseto (82087 inhabitants)
62 Km S of Siena (53903 inhabitants)
62 Km NW of Viterbo (67173 inhabitants)
79 Km W of Perugia (166134 inhabitants)
80 Km N of Civitavecchia (52991 inhabitants)
82 Km SW of Arezzo (99543 inhabitants)
95 Km W of Terni (111501 inhabitants)
98 Km W of Foligno (57155 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
Rev 1000 ML 1.3 2019-01-02
04:39:50
42.78 11.53 1 2019-08-22
08:25:02
Bollettino Sismico Italiano INGV 69445861
Rev 100 ML 1.1 2019-01-02
04:39:50
42.82 11.55 8 2019-01-02
04:46:50
Sala Sismica INGV-Roma 64436971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-01-02 04:39:50 ± 0.04
Latitude 42.78 ± 0.00
Longitude 11.53 ± 0.00
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 69445861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 260
Semi-minor axis of confidence ellipse (meter) 260
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.45865
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 69445861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-06-12 22:51:43

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 64436971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-01-02 04:46:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.FUSIO.HHZ. 2019-01-02T04:41:18.34 3.0 undecidable manual Sg 3.97 0
IV.PTCC.HHZ. 2019-01-02T04:40:21.73 3.0 negative manual Pn -0.92 0
ST.CARE.EHZ. 2019-01-02T04:40:20.46 3.0 undecidable manual Pg -0.75 0
IV.MAON.HHZ. 2019-01-02T04:40:00.70 0.3 undecidable manual P 220 0.4587 91 -0.08 68
IV.LATE.HHZ. 2019-01-02T04:39:56.56 0.3 undecidable manual P 130 0.2635 91 0.13 70
TV.SF04.EHZ. 2019-01-02T04:39:52.96 0.1 undecidable manual P 61 0.1106 92 -0.08 98
TV.SF14.HHN. 2019-01-02T04:39:52.10 0.1 undecidable manual P 113 0.0692 94 -0.01 100
TV.SF13.HHN. 2019-01-02T04:39:52.24 0.1 undecidable manual P 62 0.0764 93 -0.03 99
IV.ARCI.HHZ. 2019-01-02T04:39:52.40 0.1 positive manual P 331 0.08 93 0.05 99
TV.SF01.EHN. 2019-01-02T04:39:51.48 0.1 undecidable manual P 41 0.0396 97 0.03 100
GU.CARD.HHZ. 2019-01-02T04:39:46.41 3.0 positive manual P -8.76 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
TV.SF04.EHE. ML:1.6 0.0006245999 1.68 AML other m 2019-01-02T04:39:55.08
TV.SF04.EHN. ML:1.6 0.00055319495 0.1792 AML other m 2019-01-02T04:39:56.20
IV.ARCI.HHE. ML:1 0.000152145135 0.2592 AML other m 2019-01-02T04:39:56.94
IV.ARCI.HHN. ML:1 0.0001474145 0.2816 AML other m 2019-01-02T04:39:56.83
IV.LATE.HHE. ML:0.9 3.8474305E-5 1.52 AML other m 2019-01-02T04:40:06.88
IV.LATE.HHN. ML:1 5.8310095E-5 0.3808 AML other m 2019-01-02T04:40:07.14
IV.PTCC.HHN. ML:2.8 2.862501E-5 0.8 AML other m 2019-01-02T04:40:24.85
ST.CARE.HNE. ML:3.7 0.00027038815 1.1008 AML other m 2019-01-02T04:40:43.94
ST.CARE.HNN. ML:4.1 0.00068009285 1.0624 AML other m 2019-01-02T04:40:49.90
ST.CARE.EHN. ML:2.7 2.5712905E-5 0.6816 AML other m 2019-01-02T04:40:51.58
IV.PTCC.HHE. ML:2.5 1.33031725E-5 0.08 AML other m 2019-01-02T04:41:03.25
ST.CARE.EHE. ML:2.6 1.76011965E-5 1.8976 AML other m 2019-01-02T04:41:20.02
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