Earthquake with magnitude of Md 2.1 on date 22-08-2000 and time 02:01:45 (Italy) in region 4 km W Montefalco (PG)

A magnitude Md 2.1 earthquake occured in region: 4 km W Montefalco (PG), on

  • 22-08-2000 00:01:45 (UTC)
  • 22-08-2000 02:01:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8870, 12.6030 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
Montefalco PG 4 5679 5679
Gualdo Cattaneo PG 5 6155 11834
Bevagna PG 5 5081 16915
Giano dell'Umbria PG 6 3846 20761
Castel Ritaldi PG 9 3278 24039
Foligno PG 11 57155 81194
Trevi PG 12 8469 89663
Cannara PG 12 4305 93968
Spello PG 13 8645 102613
Collazzone PG 13 3473 106086
Massa Martana PG 14 3770 109856
Campello sul Clitunno PG 16 2442 112298
Bettona PG 17 4367 116665
Deruta PG 18 9669 126334
Fratta Todina PG 20 1839 128173
Todi PG 20 16851 145024

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km SW of Foligno (57155 inhabitants)
30 Km SE of Perugia (166134 inhabitants)
36 Km N of Terni (111501 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
87 Km SE of Arezzo (99543 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
93 Km W of Teramo (54892 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 2.1 2000-08-22
00:01:45
42.887 12.603 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 401409
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2000-08-22 00:01:45 ± 0.15
Latitude 42.8870 ± 0.0059
Longitude 12.6030 ± 0.0162
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 401409

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) 1474.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 198
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.00453
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 401409
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:17:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 2000-08-22T00:02:03.43 10.0 undecidable manual SG 173 0.4995 0.29 0.3
--.SNTG.Z. 2000-08-22T00:02:01.77 10.0 undecidable manual SG 33 0.444 0.65 0
--.NRCA.Z. 2000-08-22T00:01:59.12 10.0 undecidable manual SG 98 0.3663 0.08 0.7
--.MNS.Z. 2000-08-22T00:01:55.48 10.0 undecidable manual PG 173 0.4995 0 1.5
--.SNTG.Z. 2000-08-22T00:01:54.17 10.0 undecidable manual PG 33 0.444 -0.14 1.3
--.ASS.Z. 2000-08-22T00:01:52.57 10.0 undecidable manual SG 11 0.1665 -0.09 0.6
--.NRCA.Z. 2000-08-22T00:01:52.82 10.0 undecidable manual PG 98 0.3663 -0.29 0.8
--.ASS.Z. 2000-08-22T00:01:49.27 10.0 positive manual PG 11 0.1665 -0.16 2.8
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