Earthquake with magnitude of Md 2.6 on date 19-06-1985 and time 09:01:30 (Italy) in region 5 km NE Spoleto (PG)

A magnitude Md 2.6 earthquake occured in region: 5 km NE Spoleto (PG), on

  • 19-06-1985 07:01:30 (UTC)
  • 19-06-1985 09:01:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.77, 12.78 at 0 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
Spoleto PG 5 38218 38218
Sant'Anatolia di Narco PG 6 564 38782
Campello sul Clitunno PG 6 2442 41224
Vallo di Nera PG 7 364 41588
Scheggino PG 7 461 42049
Castel Ritaldi PG 11 3278 45327
Trevi PG 13 8469 53796
Cerreto di Spoleto PG 13 1075 54871
Poggiodomo PG 14 117 54988
Ferentillo TR 16 1913 56901
Montefalco PG 18 5679 62580
Giano dell'Umbria PG 18 3846 66426
Sellano PG 18 1079 67505
Montefranco TR 19 1276 68781
Monteleone di Spoleto PG 19 599 69380

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km S of Foligno (57155 inhabitants)
25 Km NE of Terni (111501 inhabitants)
49 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
77 Km W of Teramo (54892 inhabitants)
85 Km N of Guidonia Montecelio (88673 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
100 Km N 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 2.6 1985-06-19
07:01:30
42.77 12.78 0 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 8729
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-06-19 07:01:30 ± 0.512
Latitude 42.77 ± 0.02
Longitude 12.78 ± 0.02
Depth (km) 0 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 8729

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) 2871.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 236
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00939
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 8729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:12:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CH1.Z. 1985-06-19T07:02:08.00 10.0 undecidable manual SG 325 0.0094 -0.3 0.3
--.AR1.Z. 1985-06-19T07:01:59.00 10.0 undecidable manual SG 9 0.0066 0.66 0.1
--.CH1.Z. 1985-06-19T07:01:53.30 10.0 undecidable manual PG 325 0.0094 0.86 0.4
--.AM1.Z. 1985-06-19T07:01:51.40 10.0 undecidable manual PG 37 0.0088 0.15 1.4
--.CM2.Z. 1985-06-19T07:01:50.50 10.0 undecidable manual SG 31 0.0045 0.4 0.7
--.AR1.Z. 1985-06-19T07:01:46.00 10.0 undecidable manual PG 9 0.0066 -0.69 1.2
--.ALP.Z. 1985-06-19T07:01:43.90 10.0 undecidable manual PG 88 0.0052 0.26 1.7
--.AS1.Z. 1985-06-19T07:01:43.00 10.0 undecidable manual SG 342 0.0028 0.31 0.8
--.CM2.Z. 1985-06-19T07:01:41.70 10.0 negative manual PG 31 0.0045 -0.23 2.8
--.AS1.Z. 1985-06-19T07:01:37.50 10.0 undecidable manual PG 342 0.0028 -0.15 0.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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