Earthquake with magnitude of Md 2.9 on date 16-01-1986 and time 00:14:43 (Italy) in region 4 km N Posta (RI)

A magnitude Md 2.9 earthquake occured in region: 4 km N Posta (RI), on

  • 15-01-1986 23:14:43 (UTC)
  • 16-01-1986 00:14:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.56, 13.09 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
Posta RI 4 694 694
Borbona RI 6 617 1311
Cittareale RI 9 482 1793
Leonessa RI 10 2435 4228
Micigliano RI 12 127 4355
Montereale AQ 13 2581 6936
Cagnano Amiterno AQ 15 1369 8305
Monteleone di Spoleto PG 16 599 8904
Antrodoco RI 16 2588 11492
Borgo Velino RI 17 972 12464
Capitignano AQ 18 665 13129
Poggio Bustone RI 18 2055 15184
Amatrice RI 18 2657 17841
Cantalice RI 18 2755 20596
Castel Sant'Angelo RI 19 1308 21904
Cascia PG 19 3217 25121
Barete AQ 20 737 25858
Rivodutri RI 20 1253 27111
Accumoli RI 20 667 27778

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
36 Km E of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
91 Km W of Chieti (51815 inhabitants)
93 Km W of Pescara (121014 inhabitants)
100 Km N of Velletri (53303 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 2.9 1986-01-15
23:14:43
42.56 13.09 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 20439
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-01-15 23:14:43 ± 0.216
Latitude 42.56 ± 0.01
Longitude 13.09 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 20439

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) 1973.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.03635
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 20439
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:23:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FO1.Z. 1986-01-15T23:15:47.20 10.0 undecidable manual PN 357 0.0363 1.73 0
--.ARV.Z. 1986-01-15T23:15:17.00 10.0 undecidable manual SG 353 0.0085 0.55 0.5
--.MSC.Z. 1986-01-15T23:15:14.70 10.0 undecidable manual PN! 154 0.0136 3.9 0
--.SGG.Z. 1986-01-15T23:15:14.30 10.0 undecidable manual PN! 140 0.0136 3.53 0
--.CRE.Z. 1986-01-15T23:15:08.00 10.0 undecidable manual PN 322 0.0121 -0.54 1.1
--.ASS.Z. 1986-01-15T23:15:05.30 10.0 undecidable manual SG 327 0.0053 0.03 1
--.SD1.Z. 1986-01-15T23:15:03.50 10.0 undecidable manual PG 147 0.009 0.1 1.6
--.ARV.Z. 1986-01-15T23:15:01.50 10.0 undecidable manual PG 353 0.0085 -0.88 0.7
--.MNS.Z. 1986-01-15T23:14:57.00 10.0 undecidable manual SG 240 0.0031 0.27 0.9
--.AQU.Z. 1986-01-15T23:14:56.00 10.0 undecidable manual SG 131 0.0028 0.9 0.4
--.ASS.Z. 1986-01-15T23:14:55.50 10.0 undecidable manual PG 327 0.0053 -0.43 1.3
--.MNS.Z. 1986-01-15T23:14:51.00 10.0 positive manual PG 240 0.0031 0 3.2
--.AQU.Z. 1986-01-15T23:14:49.50 10.0 positive manual PG 131 0.0028 -0.56 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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