Earthquake with magnitude of ML 1.6 on date 31-05-2016 and time 01:33:34 (Italy) in region 4 km W Castel Giorgio (TR)

A magnitude ML 1.6 earthquake occured in region: 4 km W Castel Giorgio (TR), on

  • 30-05-2016 23:33:34 (UTC)
  • 31-05-2016 01:33:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.726, 11.936 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 Giorgio TR 4 2131 2131
San Lorenzo Nuovo VT 5 2091 4222
Acquapendente VT 6 5506 9728
Castel Viscardo TR 6 2938 12666
Grotte di Castro VT 8 2683 15349
Proceno VT 9 557 15906
Bolsena VT 10 3991 19897
Allerona TR 10 1794 21691
Onano VT 10 995 22686
Gradoli VT 11 1353 24039
Latera VT 14 836 24875
Orvieto TR 14 20630 45505
Porano TR 14 1966 47471
Ficulle TR 16 1669 49140
Fabro TR 17 2876 52016
San Casciano dei Bagni SI 17 1632 53648
Lubriano VT 17 909 54557
Bagnoregio VT 17 3650 58207
Sorano GR 19 3428 61635
Capodimonte VT 20 1731 63366
Valentano VT 20 2868 66234

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NW of Viterbo (67173 inhabitants)
56 Km SW of Perugia (166134 inhabitants)
61 Km W of Terni (111501 inhabitants)
67 Km E of Grosseto (82087 inhabitants)
68 Km W of Foligno (57155 inhabitants)
71 Km N of Civitavecchia (52991 inhabitants)
82 Km SE of Siena (53903 inhabitants)
83 Km S of Arezzo (99543 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 1.6 2016-05-30
23:33:34
42.7262 11.9362 10 2016-11-08
11:48:48
Bollettino Sismico Italiano INGV 25662891
Reviewed
Rev100
ML 1.7 2016-05-30
23:33:33
42.6838 11.9603 8 2016-05-30
23:39:13
Sala Sismica INGV-Roma 25463891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-05-30 23:33:34 ± 0.12
Latitude 42.7262 ± 0.0081
Longitude 11.9362 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 25662891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 927
Semi-minor axis of confidence ellipse (meter) 466
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 336
Circular confidence region, given by single value of horizontal uncertainty (meter) 930
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.6637
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 25463891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-05-30 23:39:13

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 25662891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-09-03 09:12:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2016-05-30T23:33:55.90 3.0 positive manual P 0.04 0
IV.SRES.HHN. 2016-05-30T23:33:47.43 1.0 undecidable manual P 139 0.6466 50 0.39 21
IV.TOLF.HHN. 2016-05-30T23:33:47.53 1.0 undecidable manual P 176 0.6637 50 0.2 22
IV.CAFI.HHZ. 2016-05-30T23:33:46.36 0.3 undecidable manual P 2 0.6034 50 0.05 68
IV.ASSB.HHN. 2016-05-30T23:33:46.91 0.6 undecidable manual P 59 0.616 50 0.38 42
IV.CESX.HHE. 2016-05-30T23:33:44.30 0.6 undecidable manual P 104 0.4919 50 -0.11 46
IV.MGAB.HHZ. 2016-05-30T23:33:43.55 0.3 undecidable manual S 35 0.2266 111 -0.17 72
IV.MCIV.HHZ. 2016-05-30T23:33:42.62 0.3 undecidable manual S 285 0.1979 114 -0.06 74
IV.ARCI.HHE. 2016-05-30T23:33:41.99 0.3 undecidable manual P 291 0.3606 50 -0.16 70
IV.SACS.HHZ. 2016-05-30T23:33:40.64 0.3 undecidable manual S 351 0.1241 125 0.44 69
IV.MCIV.HHZ. 2016-05-30T23:33:39.01 0.3 undecidable manual P 285 0.1979 114 -0.16 72
IV.MGAB.HHZ. 2016-05-30T23:33:39.34 0.3 undecidable manual P 35 0.2266 111 -0.43 68
IV.LATE.HHZ. 2016-05-30T23:33:38.41 1.0 undecidable manual P 221 0.1484 120 0.21 24
IV.SACS.HHZ. 2016-05-30T23:33:37.80 0.1 positive manual P 351 0.1241 125 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MGAB.HHE. ML:1.4 0.0001425 0.3 AML other m 2016-05-30T23:33:44.42
IV.MGAB.HHN. ML:1.4 0.000149 1.52 AML other m 2016-05-30T23:33:44.44
IV.SACS.HNE. ML:1.8 0.0006235 0.46 AML other m 2016-05-30T23:33:40.96
IV.SACS.HHE. ML:1.8 0.0006145 0.46 AML other m 2016-05-30T23:33:40.96
IV.SACS.HNN. ML:1.6 0.000387 0.18 AML other m 2016-05-30T23:33:40.73
IV.SACS.HHN. ML:1.6 0.000429 0.18 AML other m 2016-05-30T23:33:40.73
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download