Earthquake with magnitude of Md 2.2 on date 09-06-1986 and time 06:37:57 (Italy) in region 4 km NE Todi (PG)

A magnitude Md 2.2 earthquake occured in region: 4 km NE Todi (PG), on

  • 09-06-1986 04:37:57 (UTC)
  • 09-06-1986 06:37:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.81, 12.44 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 4 16851 16851
Massa Martana PG 8 3770 20621
Monte Castello di Vibio PG 8 1567 22188
Fratta Todina PG 8 1839 24027
Collazzone PG 9 3473 27500
Giano dell'Umbria PG 11 3846 31346
Marsciano PG 14 18902 50248
Gualdo Cattaneo PG 14 6155 56403
San Venanzo TR 16 2218 58621
Acquasparta TR 16 4778 63399
Avigliano Umbro TR 18 2558 65957
Montecastrilli TR 18 5022 70979
Castel Ritaldi PG 19 3278 74257
Deruta PG 19 9669 83926
Bevagna PG 19 5081 89007
Montefalco PG 19 5679 94686

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Foligno (57155 inhabitants)
33 Km NW of Terni (111501 inhabitants)
33 Km S of Perugia (166134 inhabitants)
52 Km NE of Viterbo (67173 inhabitants)
86 Km SE of Arezzo (99543 inhabitants)
93 Km N of Guidonia Montecelio (88673 inhabitants)
94 Km NW of L'Aquila (69753 inhabitants)
96 Km NE of Civitavecchia (52991 inhabitants)
99 Km NW of Tivoli (56533 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
Rev 1000 Md 2.2 1986-06-09
04:37:57
42.81 12.44 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 28989
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-06-09 04:37:57 ± 0.748
Latitude 42.81 ± 0.01
Longitude 12.44 ± 0.10
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 28989

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) 8486.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 229
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00696
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 28989
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:30:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1986-06-09T04:38:25.50 10.0 undecidable manual SG 27 0.007 0.91 0
--.MNS.Z. 1986-06-09T04:38:14.50 10.0 undecidable manual SG 157 0.0041 -0.02 0.8
--.ARV.Z. 1986-06-09T04:38:13.00 10.0 undecidable manual PG 27 0.007 -0.25 1.2
--.SU9.Z. 1986-06-09T04:38:08.00 10.0 undecidable manual SG 34 0.0024 -0.54 0.2
--.MNS.Z. 1986-06-09T04:38:07.50 10.0 undecidable manual PG 157 0.0041 0.06 1.9
--.SU9.Z. 1986-06-09T04:38:04.00 10.0 undecidable manual PG 34 0.0024 0.01 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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