Earthquake with magnitude of Md 2.4 on date 30-06-1986 and time 22:30:48 (Italy) in region 8 km NW Accumoli (RI)

A magnitude Md 2.4 earthquake occured in region: 8 km NW Accumoli (RI), on

  • 30-06-1986 20:30:48 (UTC)
  • 30-06-1986 22:30:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.76, 13.19 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
Accumoli RI 8 667 667
Arquata del Tronto AP 9 1178 1845
Norcia PG 9 4957 6802
Montegallo AP 15 523 7325
Cascia PG 15 3217 10542
Cittareale RI 15 482 11024
Amatrice RI 16 2657 13681
Castelsantangelo sul Nera MC 16 281 13962
Acquasanta Terme AP 18 2916 16878
Preci PG 19 724 17602
Montemonaco AP 20 604 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
50 Km E of Terni (111501 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 Km W of Chieti (51815 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
100 Km S of Ancona (100861 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 2.4 1986-06-30
20:30:48
42.76 13.19 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 30489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-06-30 20:30:48 ± 0.181
Latitude 42.76 ± 0.00
Longitude 13.19 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 30489

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) 1283.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 239
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00429
Epicentral distance of station farthest from the epicenter (degree) 0.00688
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 30489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:31:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1986-06-30T20:31:15.00 10.0 undecidable manual SG 345 0.0069 0.46 0
--.MNS.Z. 1986-06-30T20:31:07.00 10.0 undecidable manual SG 225 0.0047 0.09 0.5
--.ASS.Z. 1986-06-30T20:31:06.00 10.0 undecidable manual SG 307 0.0045 -0.05 0.6
--.SU9.Z. 1986-06-30T20:31:05.50 10.0 undecidable manual SG 305 0.0043 0.02 0.9
--.ARV.Z. 1986-06-30T20:31:03.20 10.0 undecidable manual PG 345 0.0069 -0.13 0.9
--.MNS.Z. 1986-06-30T20:30:59.00 10.0 undecidable manual PG 225 0.0047 0.06 1.4
--.ASS.Z. 1986-06-30T20:30:58.50 10.0 undecidable manual PG 307 0.0045 0.05 1.4
--.SU9.Z. 1986-06-30T20:30:58.00 10.0 undecidable manual PG 305 0.0043 -0.11 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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