Earthquake with magnitude of Md 2.4 on date 21-05-1985 and time 10:36:25 (Italy) in region 2 km SE Bevagna (PG)

A magnitude Md 2.4 earthquake occured in region: 2 km SE Bevagna (PG), on

  • 21-05-1985 08:36:25 (UTC)
  • 21-05-1985 10:36:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9200, 12.6330 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
Bevagna PG 3 5081 5081
Montefalco PG 3 5679 10760
Gualdo Cattaneo PG 6 6155 16915
Foligno PG 7 57155 74070
Spello PG 9 8645 82715
Cannara PG 9 4305 87020
Giano dell'Umbria PG 11 3846 90866
Trevi PG 11 8469 99335
Castel Ritaldi PG 11 3278 102613
Bettona PG 16 4367 106980
Campello sul Clitunno PG 16 2442 109422
Collazzone PG 16 3473 112895
Assisi PG 17 28299 141194
Bastia Umbra PG 18 21874 163068
Massa Martana PG 18 3770 166838
Valtopina PG 19 1398 168236
Deruta PG 19 9669 177905
Torgiano PG 20 6725 184630

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km SW of Foligno (57155 inhabitants)
29 Km SE of Perugia (166134 inhabitants)
40 Km N of Terni (111501 inhabitants)
71 Km NE of Viterbo (67173 inhabitants)
86 Km SE of Arezzo (99543 inhabitants)
89 Km NW of L'Aquila (69753 inhabitants)
92 Km W of Teramo (54892 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
Bulletin
Rev1000
Md 2.4 1985-05-21
08:36:25
42.92 12.633 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 6969
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-21 08:36:25 ± 0.413
Latitude 42.9200 ± 0.0160
Longitude 12.6330 ± 0.0351
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 6969

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) 3370.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 219
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00413
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 6969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:11:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CM2.Z. 1985-05-21T08:36:42.00 10.0 undecidable manual SG 53 0.4551 0.07 1
--.PO9.Z. 1985-05-21T08:36:41.50 10.0 undecidable manual SG 146 0.3996 1.11 0
--.CM2.Z. 1985-05-21T08:36:34.60 10.0 undecidable manual PG 53 0.4551 -0.27 1.4
--.PO9.Z. 1985-05-21T08:36:33.50 10.0 undecidable manual PG 146 0.3996 -0.48 1
--.AS1.Z. 1985-05-21T08:36:32.20 10.0 undecidable manual SG 5 0.1332 0.46 0.5
--.AS1.Z. 1985-05-21T08:36:29.00 10.0 undecidable manual PG 5 0.1332 0.02 2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download