Earthquake with magnitude of Md 2.5 on date 24-04-1985 and time 04:57:34 (Italy) in region 2 km NW Campello sul Clitunno (PG)

A magnitude Md 2.5 earthquake occured in region: 2 km NW Campello sul Clitunno (PG), on

  • 24-04-1985 02:57:34 (UTC)
  • 24-04-1985 04:57:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.83, 12.76 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
Campello sul Clitunno PG 2 2442 2442
Trevi PG 6 8469 10911
Castel Ritaldi PG 7 3278 14189
Spoleto PG 11 38218 52407
Vallo di Nera PG 11 364 52771
Montefalco PG 11 5679 58450
Sant'Anatolia di Narco PG 12 564 59014
Cerreto di Spoleto PG 13 1075 60089
Scheggino PG 14 461 60550
Giano dell'Umbria PG 15 3846 64396
Foligno PG 15 57155 121551
Sellano PG 15 1079 122630
Bevagna PG 17 5081 127711
Gualdo Cattaneo PG 19 6155 133866
Poggiodomo PG 19 117 133983
Spello PG 20 8645 142628

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SE of Foligno (57155 inhabitants)
31 Km NE of Terni (111501 inhabitants)
43 Km SE of Perugia (166134 inhabitants)
70 Km NE of Viterbo (67173 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
80 Km W of Teramo (54892 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 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 1985-04-24
02:57:34
42.83 12.76 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 5389
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-24 02:57:34 ± 0.263
Latitude 42.83 ± 0.01
Longitude 12.76 ± 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 5389

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) 2794.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.0089
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 5389
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CH1.Z. 1985-04-24T02:58:10.00 10.0 undecidable manual SG 323 0.0089 1.58 0.1
--.AR1.Z. 1985-04-24T02:57:58.50 10.0 undecidable manual SG 11 0.0061 0.07 0.6
--.ALP.Z. 1985-04-24T02:57:56.70 10.0 undecidable manual SG 94 0.0053 1.13 0.4
--.CH1.Z. 1985-04-24T02:57:54.50 10.0 undecidable manual PG 323 0.0089 0.37 1.1
--.MNS.Z. 1985-04-24T02:57:52.00 10.0 undecidable manual SG 187 0.004 1.12 0.3
--.AR1.Z. 1985-04-24T02:57:50.00 10.0 undecidable manual PG 11 0.0061 1.64 0.2
--.CM2.Z. 1985-04-24T02:57:50.70 10.0 undecidable manual SG 37 0.004 -0.53 0.8
--.ALP.Z. 1985-04-24T02:57:46.90 10.0 undecidable manual PG 94 0.0053 0.19 1.6
--.PO9.Z. 1985-04-24T02:57:45.50 10.0 undecidable manual SG 152 0.0025 -0.23 1
--.MNS.Z. 1985-04-24T02:57:44.00 10.0 undecidable manual PG 187 0.004 0 1.7
--.CM2.Z. 1985-04-24T02:57:43.50 10.0 undecidable manual PG 37 0.004 -0.7 1.2
--.AS1.Z. 1985-04-24T02:57:43.50 10.0 undecidable manual SG 341 0.0022 -0.94 0.3
--.PO9.Z. 1985-04-24T02:57:40.50 10.0 negative manual PG 152 0.0025 -0.53 2.8
--.AS1.Z. 1985-04-24T02:57:39.50 10.0 negative manual PG 341 0.0022 -0.78 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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