Earthquake with magnitude of Md 2.5 on date 16-02-1986 and time 14:03:18 (Italy) in region 2 km NE Poggiodomo (PG)

A magnitude Md 2.5 earthquake occured in region: 2 km NE Poggiodomo (PG), on

  • 16-02-1986 13:03:18 (UTC)
  • 16-02-1986 14:03:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.72, 12.96 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
Poggiodomo PG 2 117 117
Cascia PG 5 3217 3334
Monteleone di Spoleto PG 8 599 3933
Vallo di Nera PG 9 364 4297
Sant'Anatolia di Narco PG 10 564 4861
Scheggino PG 10 461 5322
Cerreto di Spoleto PG 11 1075 6397
Norcia PG 13 4957 11354
Spoleto PG 18 38218 49572
Ferentillo TR 18 1913 51485
Polino TR 18 233 51718
Leonessa RI 18 2435 54153
Campello sul Clitunno PG 18 2442 56595
Preci PG 18 724 57319
Sellano PG 19 1079 58398

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Terni (111501 inhabitants)
33 Km SE of Foligno (57155 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
62 Km W of Teramo (54892 inhabitants)
63 Km SE of Perugia (166134 inhabitants)
78 Km E of Viterbo (67173 inhabitants)
83 Km N of Guidonia Montecelio (88673 inhabitants)
86 Km N of Tivoli (56533 inhabitants)
100 Km NE of Roma (2864731 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 1986-02-16
13:03:18
42.73 12.96 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 22759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-16 13:03:18 ± 0.257
Latitude 42.73 ± 0.01
Longitude 12.96 ± 0.04
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 22759

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) 3330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
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) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00356
Epicentral distance of station farthest from the epicenter (degree) 0.01069
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 22759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:24:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RDP.Z. 1986-02-16T13:03:52.00 10.0 undecidable manual SG 190 0.0088 0.2 0.7
--.AM8.Z. 1986-02-16T13:03:51.95 10.0 undecidable manual SG 29 0.0085 1.25 0.5
--.ARV.Z. 1986-02-16T13:03:45.50 10.0 undecidable manual SG 359 0.007 0.39 0.7
--.SD1.Z. 1986-02-16T13:03:42.00 10.0 undecidable manual PN 147 0.0107 1.18 0.8
--.CRE.Z. 1986-02-16T13:03:41.00 10.0 undecidable manual PN 320 0.0104 0.71 1.2
--.RDP.Z. 1986-02-16T13:03:38.50 10.0 undecidable manual PG 190 0.0088 0.84 1.2
--.AM8.Z. 1986-02-16T13:03:38.37 10.0 undecidable manual PG 29 0.0085 1.34 0.7
--.CM8.Z. 1986-02-16T13:03:34.95 10.0 undecidable manual SG 15 0.0044 -1.02 0.5
--.ASS.Z. 1986-02-16T13:03:34.00 10.0 undecidable manual SG 326 0.0036 0.73 0.6
--.ARV.Z. 1986-02-16T13:03:33.00 10.0 undecidable manual PG 359 0.007 -0.8 1.4
--.MNS.Z. 1986-02-16T13:03:32.00 10.0 undecidable manual SG 210 0.0036 -0.99 0.5
--.AQU.Z. 1986-02-16T13:03:27.50 10.0 undecidable manual PG 138 0.0044 -1.12 1.1
--.ASS.Z. 1986-02-16T13:03:27.00 10.0 undecidable manual PG 326 0.0036 0.04 2
--.MNS.Z. 1986-02-16T13:03:26.50 10.0 undecidable manual PG 210 0.0036 -0.3 1.9
--.CM8.Z. 1986-02-16T13:03:26.93 10.0 undecidable manual PG 15 0.0044 -1.59 1.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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