Earthquake with magnitude of Md 2.2 on date 07-06-1986 and time 21:13:59 (Italy) in region 7 km S Todi (PG)

A magnitude Md 2.2 earthquake occured in region: 7 km S Todi (PG), on

  • 07-06-1986 19:13:59 (UTC)
  • 07-06-1986 21:13:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.72, 12.42 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
Todi PG 7 16851 16851
Avigliano Umbro TR 7 2558 19409
Montecastrilli TR 10 5022 24431
Massa Martana PG 11 3770 28201
Acquasparta TR 11 4778 32979
Montecchio TR 12 1676 34655
Guardea TR 14 1836 36491
Monte Castello di Vibio PG 14 1567 38058
Fratta Todina PG 16 1839 39897
San Gemini TR 16 5018 44915
Baschi TR 17 2722 47637
Alviano TR 18 1463 49100
Lugnano in Teverina TR 18 1494 50594
Amelia TR 18 11897 62491
Giano dell'Umbria PG 18 3846 66337
Castiglione in Teverina VT 19 2329 68666
Collazzone PG 20 3473 72139

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Terni (111501 inhabitants)
35 Km SW of Foligno (57155 inhabitants)
42 Km NE of Viterbo (67173 inhabitants)
43 Km S of Perugia (166134 inhabitants)
84 Km NW of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Civitavecchia (52991 inhabitants)
90 Km NW of Tivoli (56533 inhabitants)
90 Km W of L'Aquila (69753 inhabitants)
92 Km N of Roma (2864731 inhabitants)
94 Km SE 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
Md 2.2 1986-06-07
19:13:59
42.72 12.42 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 28889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-06-07 19:13:59 ± 0.943
Latitude 42.72 ± 0.01
Longitude 12.42 ± 0.12
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 28889

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 9915.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 236
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00324
Epicentral distance of station farthest from the epicenter (degree) 0.00777
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 28889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:30:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1986-06-07T19:14:31.00 10.0 undecidable manual SG 26 0.0078 1.22 0
--.ARV.Z. 1986-06-07T19:14:17.50 10.0 undecidable manual PG 26 0.0078 0.32 1
--.MNS.Z. 1986-06-07T19:14:14.00 10.0 undecidable manual SG 149 0.0035 -0.33 0.5
--.SU9.Z. 1986-06-07T19:14:14.00 10.0 undecidable manual SG 29 0.0032 0.34 0.8
--.ASS.Z. 1986-06-07T19:14:13.00 10.0 undecidable manual SG 27 0.0034 -1.21 0
--.ASS.Z. 1986-06-07T19:14:08.00 10.0 undecidable manual PG 27 0.0034 -0.19 1.6
--.MNS.Z. 1986-06-07T19:14:08.50 10.0 undecidable manual PG 149 0.0035 0.24 1.5
--.SU9.Z. 1986-06-07T19:14:07.50 10.0 undecidable manual PG 29 0.0032 -0.37 2.6
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