Earthquake with magnitude of Md 2.7 on date 07-02-1986 and time 19:47:58 (Italy) in region 6 km N Posta (RI)

A magnitude Md 2.7 earthquake occured in region: 6 km N Posta (RI), on

  • 07-02-1986 18:47:58 (UTC)
  • 07-02-1986 19:47:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.58, 13.09 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
Posta RI 6 694 694
Cittareale RI 8 482 1176
Borbona RI 8 617 1793
Leonessa RI 10 2435 4228
Monteleone di Spoleto PG 14 599 4827
Montereale AQ 15 2581 7408
Micigliano RI 15 127 7535
Cascia PG 17 3217 10752
Cagnano Amiterno AQ 18 1369 12121
Amatrice RI 18 2657 14778
Antrodoco RI 18 2588 17366
Poggio Bustone RI 18 2055 19421
Accumoli RI 19 667 20088
Capitignano AQ 19 665 20753
Poggiodomo PG 19 117 20870
Cantalice RI 19 2755 23625
Borgo Velino RI 19 972 24597
Polino TR 20 233 24830

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Terni (111501 inhabitants)
36 Km NW of L'Aquila (69753 inhabitants)
51 Km W of Teramo (54892 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
92 Km W of Chieti (51815 inhabitants)
93 Km W of Pescara (121014 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 2.7 1986-02-07
18:47:58
42.58 13.09 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 22269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-07 18:47:58 ± 0.234
Latitude 42.58 ± 0.01
Longitude 13.09 ± 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 22269

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) 2775.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.0119
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:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 22269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:24:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AM8.Z. 1986-02-07T18:48:35.38 10.0 undecidable manual SN 21 0.0093 1.43 0.2
--.SD1.Z. 1986-02-07T18:48:34.50 10.0 undecidable manual SG 148 0.0091 0.98 0.4
--.ARV.Z. 1986-02-07T18:48:31.50 10.0 undecidable manual SG 353 0.0083 1.15 0.2
--.CRE.Z. 1986-02-07T18:48:24.50 10.0 undecidable manual PN 322 0.0119 1.43 0.2
--.ASS.Z. 1986-02-07T18:48:20.00 10.0 undecidable manual SG 326 0.0052 0.78 0.4
--.CM8.Z. 1986-02-07T18:48:20.63 10.0 undecidable manual SG 4 0.0055 0.18 0.9
--.SD1.Z. 1986-02-07T18:48:19.00 10.0 undecidable manual PG 148 0.0091 0.16 1.3
--.AM8.Z. 1986-02-07T18:48:18.43 10.0 undecidable manual PN 21 0.0093 -0.66 0.9
--.RDP.Z. 1986-02-07T18:48:17.00 10.0 undecidable manual PG 198 0.0078 1.08 0.6
--.ARV.Z. 1986-02-07T18:48:16.50 10.0 undecidable manual PG 353 0.0083 -0.5 1.1
--.MNS.Z. 1986-02-07T18:48:10.70 10.0 undecidable manual SG 237 0.0032 -1.44 0.2
--.ASS.Z. 1986-02-07T18:48:10.20 10.0 undecidable manual PG 326 0.0052 -0.38 1.4
--.CM8.Z. 1986-02-07T18:48:10.38 10.0 undecidable manual PG 4 0.0055 -0.91 1.6
--.MNS.Z. 1986-02-07T18:48:06.50 10.0 positive manual PG 237 0.0032 0.01 3
--.AQU.Z. 1986-02-07T18:48:05.50 10.0 negative manual PG 134 0.0029 -0.4 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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