Earthquake with magnitude of Md 2.2 on date 09-02-1986 and time 18:19:43 (Italy) in region 5 km SW Monteleone di Spoleto (PG)

A magnitude Md 2.2 earthquake occured in region: 5 km SW Monteleone di Spoleto (PG), on

  • 09-02-1986 17:19:43 (UTC)
  • 09-02-1986 18:19:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.63, 12.9 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
Monteleone di Spoleto PG 5 599 599
Polino TR 7 233 832
Leonessa RI 9 2435 3267
Ferentillo TR 9 1913 5180
Poggiodomo PG 10 117 5297
Scheggino PG 11 461 5758
Montefranco TR 12 1276 7034
Arrone TR 12 2763 9797
Morro Reatino RI 13 373 10170
Sant'Anatolia di Narco PG 13 564 10734
Rivodutri RI 13 1253 11987
Cascia PG 14 3217 15204
Labro RI 14 374 15578
Poggio Bustone RI 14 2055 17633
Vallo di Nera PG 16 364 17997
Colli sul Velino RI 18 533 18530
Cantalice RI 18 2755 21285
Spoleto PG 18 38218 59503
Posta RI 20 694 60197

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Terni (111501 inhabitants)
40 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
66 Km W of Teramo (54892 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
69 Km E of Viterbo (67173 inhabitants)
71 Km N of Guidonia Montecelio (88673 inhabitants)
74 Km N of Tivoli (56533 inhabitants)
89 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 2.2 1986-02-09
17:19:43
42.63 12.9 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 22479
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-09 17:19:43 ± 0.448
Latitude 42.63 ± 0.02
Longitude 12.90 ± 0.05
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 22479

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) 4549.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00526
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 22479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:24:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CM8.Z. 1986-02-09T17:20:05.15 10.0 undecidable manual SG 17 0.0053 1.09 0.6
--.AQU.Z. 1986-02-09T17:20:00.50 10.0 undecidable manual SG 126 0.0041 0.7 0.6
--.CM8.Z. 1986-02-09T17:19:54.20 10.0 undecidable manual PG 17 0.0053 -1.02 1
--.AQU.Z. 1986-02-09T17:19:51.50 10.0 undecidable manual PG 126 0.0041 -1.25 0.9
--.MNS.Z. 1986-02-09T17:19:50.00 10.0 undecidable manual PG 213 0.0026 0.32 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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