Earthquake with magnitude of Md 2.6 on date 18-07-1986 and time 09:48:05 (Italy) in region 5 km SW Fiastra (MC)

A magnitude Md 2.6 earthquake occured in region: 5 km SW Fiastra (MC), on

  • 18-07-1986 07:48:05 (UTC)
  • 18-07-1986 09:48:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 13.12 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
Fiastra MC 5 559 559
Fiordimonte MC 5 202 761
Acquacanina MC 5 121 882
Ussita MC 7 444 1326
Pievebovigliana MC 7 866 2192
Pieve Torina MC 8 1458 3650
Visso MC 8 1107 4757
Bolognola MC 9 142 4899
Monte Cavallo MC 10 145 5044
Muccia MC 11 915 5959
Castelsantangelo sul Nera MC 12 281 6240
Sarnano MC 15 3264 9504
Preci PG 15 724 10228
Camerino MC 16 6974 17202
Serravalle di Chienti MC 16 1070 18272
Cessapalombo MC 16 512 18784
Caldarola MC 17 1823 20607
Camporotondo di Fiastrone MC 19 563 21170
Gualdo MC 19 815 21985
Montefortino FM 19 1178 23163
Amandola FM 19 3629 26792
San Ginesio MC 20 3498 30290

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
61 Km E of Perugia (166134 inhabitants)
61 Km NW of Teramo (54892 inhabitants)
63 Km NE of Terni (111501 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
94 Km S of Fano (60888 inhabitants)
100 Km NW of Montesilvano (53738 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 2.6 1986-07-18
07:48:05
43 13.12 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 31149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-07-18 07:48:05 ± 0.371
Latitude 43.00 ± 0.01
Longitude 13.12 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 31149

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) 2859.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 222
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.00623
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:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 31149
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:32:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1986-07-18T07:48:25.00 10.0 undecidable manual SG 344 0.0046 0.7 0.1
--.MNS.Z. 1986-07-18T07:48:20.00 10.0 undecidable manual PG 207 0.0062 0.04 1.6
--.ASS.Z. 1986-07-18T07:48:19.00 10.0 undecidable manual SG 279 0.0031 -0.04 0.8
--.ARV.Z. 1986-07-18T07:48:16.00 10.0 undecidable manual PG 344 0.0046 -0.53 0.6
--.ASS.Z. 1986-07-18T07:48:13.50 10.0 undecidable manual PG 279 0.0031 0 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download