Earthquake with magnitude of Md 2.5 on date 05-03-1986 and time 06:04:17 (Italy) in region 2 km SW Assisi (PG)

A magnitude Md 2.5 earthquake occured in region: 2 km SW Assisi (PG), on

  • 05-03-1986 05:04:17 (UTC)
  • 05-03-1986 06:04:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0640, 12.6000 at 12 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
Assisi PG 2 28299 28299
Bastia Umbra PG 4 21874 50173
Cannara PG 8 4305 54478
Spello PG 10 8645 63123
Valfabbrica PG 11 3389 66512
Bettona PG 11 4367 70879
Valtopina PG 13 1398 72277
Torgiano PG 14 6725 79002
Bevagna PG 14 5081 84083
Foligno PG 15 57155 141238
Nocera Umbra PG 16 5839 147077
Deruta PG 17 9669 156746
Gualdo Cattaneo PG 18 6155 162901
Perugia PG 18 166134 329035
Montefalco PG 19 5679 334714

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NW of Foligno (57155 inhabitants)
18 Km E of Perugia (166134 inhabitants)
56 Km N of Terni (111501 inhabitants)
73 Km SE of Arezzo (99543 inhabitants)
82 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Fano (60888 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
98 Km S of Pesaro (94582 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 2.5 1986-03-05
05:04:17
43.064 12.6 12 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 23619
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-03-05 05:04:17 ± 0.164
Latitude 43.0640 ± 0.0096
Longitude 12.6000 ± 0.0137
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 23619

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) 1543.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.00656
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 23619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:25:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1986-03-05T05:04:35.50 10.0 undecidable manual SG 29 0.4995 -0.29 0.4
--.CRE.Z. 1986-03-05T05:04:33.00 10.0 undecidable manual PG 319 0.7326 0.61 0.2
--.MNS.Z. 1986-03-05T05:04:31.50 10.0 undecidable manual PG 174 0.6771 0 1.2
--.ARV.Z. 1986-03-05T05:04:28.00 10.0 undecidable manual PG 29 0.4995 -0.17 1.2
--.ASS.Z. 1986-03-05T05:04:22.00 10.0 undecidable manual SG 92 0.0333 -0.04 0.7
--.PRG.Z. 1986-03-05T05:04:21.50 10.0 undecidable manual PG 284 0.1443 -0.28 2.2
--.ASS.Z. 1986-03-05T05:04:20.50 10.0 undecidable manual PG 92 0.0333 0.27 1.2
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