Earthquake with magnitude of Md 2.0 on date 26-04-2005 and time 20:21:23 (UTC) in region 3 km E Montefalco (PG)

A magnitude Md 2.0 earthquake occured in region: 3 km E Montefalco (PG), on

  • 26-04-2005 20:21:23 (UTC)
  • 26-04-2005 22:21:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8910, 12.6930 at 18 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
Montefalco PG 3 5679 5679
Trevi PG 5 8469 14148
Foligno PG 7 57155 71303
Castel Ritaldi PG 8 3278 74581
Bevagna PG 8 5081 79662
Campello sul Clitunno PG 10 2442 82104
Gualdo Cattaneo PG 11 6155 88259
Giano dell'Umbria PG 11 3846 92105
Spello PG 12 8645 100750
Cannara PG 15 4305 105055
Spoleto PG 18 38218 143273
Massa Martana PG 19 3770 147043
Sellano PG 19 1079 148122
Vallo di Nera PG 19 364 148486
Valtopina PG 20 1398 149884
Cerreto di Spoleto PG 20 1075 150959

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km S of Foligno (57155 inhabitants)
35 Km SE of Perugia (166134 inhabitants)
37 Km N of Terni (111501 inhabitants)
71 Km NE of Viterbo (67173 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
87 Km W of Teramo (54892 inhabitants)
92 Km SE of Arezzo (99543 inhabitants)
99 Km N of Guidonia Montecelio (88673 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 2.0 2005-04-26
20:21:23
42.891 12.693 18 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 516089
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2005-04-26 20:21:23 ± 0.73
Latitude 42.8910 ± 0.0261
Longitude 12.6930 ± 0.0295
Depth (km) 18 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 516089

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3403
Semi-minor axis of confidence ellipse (meter) 975
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 216
Circular confidence region, given by single value of horizontal uncertainty (meter) 3764.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 250
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.52
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 516089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:01:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MNS.SHZ. 2005-04-26T20:21:40.31 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2005-04-26T20:21:39.30 0.1 undecidable manual Sg 26 45.1215 0.409 45
IV.MURB.HHN. 2005-04-26T20:21:39.43 10.0 undecidable manual Pg 0 0 0
IV.NRCA.SHZ. 2005-04-26T20:21:35.94 0.1 undecidable manual Sg 100 34.8429 -0.011 50
IV.SNTG.SHZ. 2005-04-26T20:21:31.67 0.1 undecidable manual Pg 26 45.1215 -0.353 92
IV.ASS.SHZ. 2005-04-26T20:21:31.47 0.1 undecidable manual Sg 350 19.3695 -0.365 48
IV.NRCA.SHZ. 2005-04-26T20:21:30.39 0.1 undecidable manual Pg 100 34.8429 0.017 100
IV.ASS.SHZ. 2005-04-26T20:21:28.39 0.1 undecidable manual Pg 350 19.3695 0.329 96
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