Earthquake with magnitude of Md 3.0 on date 04-08-1986 and time 14:41:30 (Italy) in region 1 km W Monte Cavallo (MC)

A magnitude Md 3.0 earthquake occured in region: 1 km W Monte Cavallo (MC), on

  • 04-08-1986 12:41:30 (UTC)
  • 04-08-1986 14:41:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 13 at 5 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
Monte Cavallo MC 1 145 145
Pieve Torina MC 7 1458 1603
Fiordimonte MC 9 202 1805
Serravalle di Chienti MC 9 1070 2875
Visso MC 10 1107 3982
Pievebovigliana MC 11 866 4848
Muccia MC 11 915 5763
Sellano PG 13 1079 6842
Ussita MC 13 444 7286
Preci PG 13 724 8010
Fiastra MC 14 559 8569
Acquacanina MC 15 121 8690
Camerino MC 17 6974 15664
Castelsantangelo sul Nera MC 17 281 15945
Sefro MC 17 422 16367
Bolognola MC 19 142 16509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
51 Km E of Perugia (166134 inhabitants)
56 Km NE of Terni (111501 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
95 Km S of Fano (60888 inhabitants)
97 Km NE of Viterbo (67173 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 3.0 1986-08-04
12:41:30
43 13 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 32109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-08-04 12:41:30 ± 1.336
Latitude 43.00 ± 0.06
Longitude 13.00 ± 0.06
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 32109

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) 7820.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 289
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
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) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.00882
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:3

Field Value
Value 3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 32109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:33:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1986-08-04T12:41:51.50 10.0 undecidable manual PG 309 0.0088 1.56 0.1
--.ARV.Z. 1986-08-04T12:41:49.00 10.0 undecidable manual SG 355 0.0045 -0.15 0.5
--.ARV.Z. 1986-08-04T12:41:40.50 10.0 undecidable manual PG 355 0.0045 -0.58 1.1
--.ASS.Z. 1986-08-04T12:41:40.00 10.0 undecidable manual SG 285 0.0023 -0.19 0.8
--.ASS.Z. 1986-08-04T12:41:35.50 10.0 positive manual PG 285 0.0023 -0.41 2.4
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