Earthquake with magnitude of Md 2.5 on date 03-11-1986 and time 02:37:17 (Italy) in region 3 km S Borgo Velino (RI)

A magnitude Md 2.5 earthquake occured in region: 3 km S Borgo Velino (RI), on

  • 03-11-1986 01:37:17 (UTC)
  • 03-11-1986 02:37:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.38, 13.07 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
Borgo Velino RI 3 972 972
Castel Sant'Angelo RI 4 1308 2280
Antrodoco RI 5 2588 4868
Micigliano RI 8 127 4995
Concerviano RI 9 291 5286
Petrella Salto RI 9 1197 6483
Cittaducale RI 10 6828 13311
Fiamignano RI 13 1413 14724
Longone Sabino RI 14 597 15321
Scoppito AQ 15 3727 19048
Cagnano Amiterno AQ 16 1369 20417
Varco Sabino RI 16 187 20604
Belmonte in Sabina RI 16 636 21240
Borbona RI 16 617 21857
Posta RI 16 694 22551
Rocca Sinibalda RI 16 815 23366
Marcetelli RI 17 89 23455
Cantalice RI 17 2755 26210
Rieti RI 17 47698 73908
Barete AQ 19 737 74645
Pizzoli AQ 20 4326 78971
Castel di Tora RI 20 288 79259

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of L'Aquila (69753 inhabitants)
40 Km SE of Terni (111501 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
51 Km NE of Tivoli (56533 inhabitants)
61 Km SW of Teramo (54892 inhabitants)
71 Km SE of Foligno (57155 inhabitants)
72 Km NE of Roma (2864731 inhabitants)
79 Km E of Viterbo (67173 inhabitants)
81 Km NE of Velletri (53303 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
90 Km W of Chieti (51815 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
94 Km NE of Aprilia (73446 inhabitants)
95 Km W of Pescara (121014 inhabitants)
96 Km NE of Fiumicino (78395 inhabitants)
98 Km SE of Perugia (166134 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 2.5 1986-11-03
01:37:17
42.38 13.07 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 36619
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-11-03 01:37:17 ± 0.309
Latitude 42.38 ± 0.02
Longitude 13.07 ± 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 36619

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) 2721
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 195
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.01004
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 36619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:36:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1986-11-03T01:37:55.50 10.0 undecidable manual SN 355 0.01 -0.21 0.5
--.SD1.Z. 1986-11-03T01:37:48.50 10.0 undecidable manual SG 140 0.0078 0.7 0.2
--.ASS.Z. 1986-11-03T01:37:44.50 10.0 undecidable manual SG 336 0.0067 0.43 0.7
--.ARV.Z. 1986-11-03T01:37:40.00 10.0 undecidable manual PN 355 0.01 0.59 0.6
--.SD1.Z. 1986-11-03T01:37:34.50 10.0 undecidable manual PG 140 0.0078 -0.34 1.2
--.ASS.Z. 1986-11-03T01:37:32.00 10.0 undecidable manual PG 336 0.0067 -0.69 0.5
--.AQU.Z. 1986-11-03T01:37:26.50 10.0 undecidable manual SG 95 0.0022 -0.29 0.9
--.AQU.Z. 1986-11-03T01:37:22.80 10.0 positive manual PG 95 0.0022 0.08 3.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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