Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (explosion) with magnitude of ML 1.4 on date 19-06-2019 and time 10:53:56 (Italy) in region Costa Toscana meridionale (Grosseto)

A magnitude ML 1.4 (explosion) earthquake occured in region: Costa Toscana meridionale (Grosseto), on

  • 19-06-2019 08:53:56 (UTC)
  • 19-06-2019 10:53:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3760, 11.3250 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: explosion.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Orbetello GR 12 14878 14878
Capalbio GR 12 4129 19007
Monte Argentario GR 19 12660 31667

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km SE of Grosseto (82087 inhabitants)
50 Km NW of Civitavecchia (52991 inhabitants)
64 Km W of Viterbo (67173 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
Bulletin
Rev1000 		ML 1.4 2019-06-19
08:53:56		 42.3765 11.3252 0 2019-11-13
14:31:00		 Bollettino Sismico Italiano INGV 72077691
Reviewed
Rev100 		ML 1.5 2019-06-19
08:53:56		 42.3397 11.2605 10 2019-06-19
09:08:01		 Sala Sismica INGV-Roma 69693061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-06-19 08:53:56 ± 0.23
Latitude 42.3765 ± 0.0144
Longitude 11.3252 ± 0.0134
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type explosion
Origin ID 72077691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1580
Semi-minor axis of confidence ellipse (meter) 1080
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 4
Circular confidence region, given by single value of horizontal uncertainty (meter) 1580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.15199
Epicentral distance of station farthest from the epicenter (degree) 0.80040
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 72077691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-23 14:51:57

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 69693061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-06-19 09:08:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TRIF.CHE. 2019-06-19T08:54:12.75 0.3 undecidable manual P 337 88.8444 50 0.04 65
IV.SACS.HNZ. 2019-06-19T08:54:10.00 0.3 undecidable manual P 42 70.8735 50 0.06 68
IV.RIBO.EHZ.01 2019-06-19T08:54:10.08 0.1 undecidable manual P 340 67.4769 50 0.67 77
IV.TOLF.HHZ. 2019-06-19T08:54:09.16 0.3 undecidable manual P 122 65.3901 50 0.06 68
TV.SF13.HHZ. 2019-06-19T08:54:07.05 0.3 undecidable manual P 26 54.6009 90 -0.08 69
TV.SF04.EHZ. 2019-06-19T08:54:07.41 0.6 undecidable manual P 28 57.7977 90 -0.37 43
IV.BARO.EHE. 2019-06-19T08:54:07.81 0.6 undecidable manual P 103 61.2942 50 -0.65 39
TV.SF03.EHZ. 2019-06-19T08:54:07.32 0.3 undecidable manual P 32 55.6998 90 -0.03 70
IV.CASP.HHZ. 2019-06-19T08:54:07.52 0.6 undecidable manual P 321 59.3961 90 -0.57 41
IV.MCIV.CHZ. 2019-06-19T08:54:06.94 0.3 undecidable manual P 33 53.0025 90 0.12 69
IV.LATE.HHZ. 2019-06-19T08:54:06.49 0.3 undecidable manual P 56 47.2194 90 0.84 56
IV.ARCI.HNZ. 2019-06-19T08:54:06.96 1.0 undecidable manual P 13 54.1014 90 -0.08 23
TV.SF14.HHZ. 2019-06-19T08:54:05.16 0.3 undecidable manual P 29 48.2184 90 -0.69 60
IV.MAON.HHE. 2019-06-19T08:53:59.56 0.1 undecidable manual P 290 16.872 90 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CASP.HHN. ML:1.6 0.000095723505 0.3648 AML other m 2019-06-19T08:54:18.58
IV.CASP.HHE. ML:1.6 0.00007486615 0.3584 AML other m 2019-06-19T08:54:19.05
IV.MCIV.CHN. ML:1.3 0.000045726045 0.5184 AML other m 2019-06-19T08:54:18.90
IV.MCIV.CHE. ML:1.3 0.000049709984999999996 0.5888 AML other m 2019-06-19T08:54:19.70
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download