Earthquake with magnitude of ML 1.3 on date 20-06-2006 and time 02:30:52 (UTC) in region 3 km NW San Casciano dei Bagni (SI)

A magnitude ML 1.3 earthquake occured in region: 3 km NW San Casciano dei Bagni (SI), on

  • 20-06-2006 02:30:52 (UTC)
  • 20-06-2006 04:30:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8930, 11.8580 at 4 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
San Casciano dei Bagni SI 3 1632 1632
Radicofani SI 7 1097 2729
Cetona SI 9 2755 5484
Sarteano SI 11 4717 10201
Allerona TR 13 1794 11995
Fabro TR 13 2876 14871
Città della Pieve PG 14 7712 22583
Piancastagnaio SI 14 4230 26813
Abbadia San Salvatore SI 15 6444 33257
Proceno VT 15 557 33814
Chiusi SI 16 8704 42518
Monteleone d'Orvieto TR 16 1467 43985
Acquapendente VT 17 5506 49491
Ficulle TR 18 1669 51160
Castell'Azzara GR 19 1476 52636
Chianciano Terme SI 19 7105 59741
Castel Viscardo TR 19 2938 62679
Montegabbione TR 20 1216 63895

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km W of Perugia (166134 inhabitants)
57 Km NW of Viterbo (67173 inhabitants)
62 Km E of Grosseto (82087 inhabitants)
64 Km SE of Siena (53903 inhabitants)
64 Km S of Arezzo (99543 inhabitants)
69 Km W of Foligno (57155 inhabitants)
74 Km NW of Terni (111501 inhabitants)
89 Km N of Civitavecchia (52991 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
Md 1.7
ML 1.3
2006-06-20
02:30:52
42.893 11.858 4 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 574839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-06-20 02:30:52 ± 0.21
Latitude 42.8930 ± 0.0108
Longitude 11.8580 ± 0.0123
Depth (km) 4 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 574839

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1263
Semi-minor axis of confidence ellipse (meter) 1000
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 26
Circular confidence region, given by single value of horizontal uncertainty (meter) 1562.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.67809
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 574839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:01:34

Md:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 574839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:01:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BADI.EHN. 2006-06-20T02:31:07.30 0.3 undecidable manual Pg 24 75.2691 0.393 66
IV.LATE.HHZ. 2006-06-20T02:31:04.40 0.3 undecidable manual Sg 188 31.2465 0.568 34
IV.ARCI.HHN. 2006-06-20T02:31:03.70 0.3 undecidable manual Sg 262 31.4463 -0.189 37
IV.ARCI.HHN. 2006-06-20T02:30:59.03 0.3 undecidable manual Pg 262 31.4463 -0.224 74
IV.LATE.HHZ. 2006-06-20T02:30:59.45 0.1 undecidable manual Pg 188 31.2465 0.229 99
IV.SACS.HHE. 2006-06-20T02:30:55.31 0.1 undecidable manual Sg 139 6.3936 -0.153 52
IV.SACS.HHE. 2006-06-20T02:30:54.03 0.1 positive manual Pg 139 6.3936 -0.359 100
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