Earthquake with magnitude of Md 2.4 on date 02-04-1986 and time 03:16:38 (Italy) in region 6 km SW Serravalle di Chienti (MC)

A magnitude Md 2.4 earthquake occured in region: 6 km SW Serravalle di Chienti (MC), on

  • 02-04-1986 01:16:38 (UTC)
  • 02-04-1986 03:16:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0300, 12.9130 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
Serravalle di Chienti MC 6 1070 1070
Monte Cavallo MC 8 145 1215
Pieve Torina MC 11 1458 2673
Muccia MC 12 915 3588
Valtopina PG 13 1398 4986
Nocera Umbra PG 13 5839 10825
Sefro MC 13 422 11247
Fiordimonte MC 14 202 11449
Pievebovigliana MC 15 866 12315
Sellano PG 16 1079 13394
Camerino MC 17 6974 20368
Pioraco MC 18 1134 21502
Fiuminata MC 18 1402 22904
Visso MC 18 1107 24011
Foligno PG 19 57155 81166
Preci PG 20 724 81890
Fiastra MC 20 559 82449

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
43 Km E of Perugia (166134 inhabitants)
56 Km NE of Terni (111501 inhabitants)
77 Km NW of Teramo (54892 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
85 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
97 Km SE of Arezzo (99543 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 2.4 1986-04-02
01:16:38
43.03 12.913 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 25259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-04-02 01:16:38 ± 0.111
Latitude 43.0300 ± 0.0066
Longitude 12.9130 ± 0.0083
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 25259

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) 998.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00170
Epicentral distance of station farthest from the epicenter (degree) 0.00599
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 25259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:27:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1986-04-02T01:17:02.50 10.0 undecidable manual SG 194 0.666 0.4 0.2
--.ARV.Z. 1986-04-02T01:16:56.00 10.0 undecidable manual SG 2 0.4662 0.25 0.8
--.MNS.Z. 1986-04-02T01:16:52.00 10.0 undecidable manual PG 194 0.666 -0.24 1.1
--.CM8.Z. 1986-04-02T01:16:48.15 10.0 undecidable manual SG 45 0.2331 -0.11 0.8
--.ARV.Z. 1986-04-02T01:16:48.20 10.0 undecidable manual PG 2 0.4662 -0.38 0.7
--.ASS.Z. 1986-04-02T01:16:47.00 10.0 undecidable manual SG 279 0.1887 0.11 0.8
--.CM8.Z. 1986-04-02T01:16:44.51 10.0 undecidable manual PG 45 0.2331 0.26 1.4
--.ASS.Z. 1986-04-02T01:16:43.50 10.0 undecidable manual PG 279 0.1887 0.04 2.2
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