Earthquake with magnitude of ML 1.7 on date 20-06-2006 and time 04:37:30 (UTC) in region 4 km N San Casciano dei Bagni (SI)

A magnitude ML 1.7 earthquake occured in region: 4 km N San Casciano dei Bagni (SI), on

  • 20-06-2006 04:37:30 (UTC)
  • 20-06-2006 06:37:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9120, 11.8740 at 5 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 4 1632 1632
Cetona SI 6 2755 4387
Sarteano SI 9 4717 9104
Radicofani SI 9 1097 10201
Città della Pieve PG 12 7712 17913
Fabro TR 13 2876 20789
Chiusi SI 13 8704 29493
Allerona TR 14 1794 31287
Monteleone d'Orvieto TR 15 1467 32754
Piancastagnaio SI 16 4230 36984
Abbadia San Salvatore SI 16 6444 43428
Chianciano Terme SI 17 7105 50533
Proceno VT 18 557 51090
Ficulle TR 18 1669 52759
Montegabbione TR 18 1216 53975
Piegaro PG 19 3669 57644
Acquapendente VT 19 5506 63150
Parrano TR 20 534 63684

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of Perugia (166134 inhabitants)
58 Km NW of Viterbo (67173 inhabitants)
62 Km S of Arezzo (99543 inhabitants)
63 Km SE of Siena (53903 inhabitants)
64 Km E of Grosseto (82087 inhabitants)
68 Km W of Foligno (57155 inhabitants)
74 Km NW of Terni (111501 inhabitants)
91 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 2.1
ML 1.7
2006-06-20
04:37:30
42.912 11.874 5 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 574879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-06-20 04:37:30 ± 0.13
Latitude 42.9120 ± 0.0081
Longitude 11.8740 ± 0.0098
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 574879

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 947
Semi-minor axis of confidence ellipse (meter) 789
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 326
Circular confidence region, given by single value of horizontal uncertainty (meter) 1204.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.65561
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 574879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:01:36

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 574879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:01:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHN. 2006-06-20T04:37:51.04 0.3 undecidable manual Sg 53 65.49 -0.444 32
IV.BADI.EHN. 2006-06-20T04:37:44.07 0.1 undecidable manual Pg 24 72.7716 0.474 84
IV.MURB.HHN. 2006-06-20T04:37:42.26 0.1 undecidable manual Pg 53 65.49 -0.222 90
IV.ARCI.HHN. 2006-06-20T04:37:41.48 0.1 undecidable manual Sg 259 33.1446 -0.318 47
IV.LATE.HHZ. 2006-06-20T04:37:37.28 0.3 undecidable manual Pg 190 33.5442 0.295 70
IV.ARCI.HHN. 2006-06-20T04:37:36.92 0.1 undecidable manual Pg 259 33.1446 0.029 99
IV.SACS.HHZ. 2006-06-20T04:37:33.42 0.1 undecidable manual Sg 158 7.5813 0.097 51
IV.SACS.HHZ. 2006-06-20T04:37:31.80 0.1 positive manual Pg 158 7.5813 -0.196 100
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