Earthquake with magnitude of Md 3.1 on date 02-05-1986 and time 04:01:56 (UTC) in region 10 km NW Sellano (PG)

A magnitude Md 3.1 earthquake occured in region: 10 km NW Sellano (PG), on

  • 02-05-1986 04:01:56 (UTC)
  • 02-05-1986 06:01:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.96, 12.84 at 3 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
Sellano PG 11 1079 1079
Foligno PG 11 57155 58234
Trevi PG 12 8469 66703
Valtopina PG 13 1398 68101
Monte Cavallo MC 13 145 68246
Spello PG 14 8645 76891
Serravalle di Chienti MC 15 1070 77961
Campello sul Clitunno PG 17 2442 80403
Cerreto di Spoleto PG 17 1075 81478
Montefalco PG 17 5679 87157
Nocera Umbra PG 17 5839 92996
Preci PG 18 724 93720
Bevagna PG 19 5081 98801
Pieve Torina MC 19 1458 100259

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Foligno (57155 inhabitants)
40 Km E of Perugia (166134 inhabitants)
47 Km NE of Terni (111501 inhabitants)
78 Km W of Teramo (54892 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
85 Km NE of Viterbo (67173 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
96 Km SE of Arezzo (99543 inhabitants)
99 Km S of Fano (60888 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 3.1 1986-05-02
04:01:56
42.96 12.84 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 26259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-05-02 04:01:56 ± 0.435
Latitude 42.96 ± 0.01
Longitude 12.84 ± 0.03
Depth (km) 3 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 26259

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) 2515.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.02874
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 26259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:27:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1986-05-02T04:02:48.00 10.0 undecidable manual PN 344 0.0287 0.83 0.4
--.RDP.Z. 1986-05-02T04:02:37.50 10.0 undecidable manual SN 184 0.0108 0.35 0.9
--.BDI.Z. 1986-05-02T04:02:31.00 10.0 undecidable manual PN 304 0.0176 0.78 0.6
--.CRE.Z. 1986-05-02T04:02:29.20 10.0 undecidable manual SG 315 0.0083 0.17 0.7
--.SD1.Z. 1986-05-02T04:02:24.50 10.0 undecidable manual PN 149 0.013 1.49 0.1
--.MAO.Z. 1986-05-02T04:02:21.50 10.0 undecidable manual PN 246 0.0121 -0.35 1.3
--.RDP.Z. 1986-05-02T04:02:19.00 10.0 undecidable manual PN 184 0.0108 -0.79 0.8
--.MNS.Z. 1986-05-02T04:02:17.50 10.0 undecidable manual SG 191 0.0053 -0.73 0.4
--.ARV.Z. 1986-05-02T04:02:16.30 10.0 undecidable manual SG 7 0.0049 -0.45 0.8
--.CRE.Z. 1986-05-02T04:02:14.50 10.0 undecidable manual PG 315 0.0083 -0.6 1.2
--.AQU.Z. 1986-05-02T04:02:11.50 10.0 undecidable manual PG 145 0.0066 -0.03 1.7
--.MNS.Z. 1986-05-02T04:02:08.30 10.0 undecidable manual PG 191 0.0053 -0.56 1.2
--.ARV.Z. 1986-05-02T04:02:07.50 10.0 positive manual PG 7 0.0049 -0.51 2.6
--.ASS.Z. 1986-05-02T04:02:00.50 10.0 undecidable manual PG 305 0.0015 0.54 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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