Earthquake with magnitude of Md 2.2 on date 30-04-2001 and time 09:56:59 (UTC) in region 4 km SW Sefro (MC)

A magnitude Md 2.2 earthquake occured in region: 4 km SW Sefro (MC), on

  • 30-04-2001 09:56:59 (UTC)
  • 30-04-2001 11:56:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.117, 12.92 at 3 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
Sefro MC 4 422 422
Serravalle di Chienti MC 6 1070 1492
Fiuminata MC 8 1402 2894
Pioraco MC 9 1134 4028
Nocera Umbra PG 11 5839 9867
Muccia MC 11 915 10782
Camerino MC 12 6974 17756
Pieve Torina MC 13 1458 19214
Pievebovigliana MC 15 866 20080
Valtopina PG 15 1398 21478
Esanatoglia MC 15 2034 23512
Monte Cavallo MC 15 145 23657
Castelraimondo MC 15 4587 28244
Fiordimonte MC 16 202 28446
Gualdo Tadino PG 17 15208 43654
Matelica MC 17 9981 53635
Gagliole MC 18 620 54255

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Foligno (57155 inhabitants)
43 Km E of Perugia (166134 inhabitants)
66 Km NE of Terni (111501 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
81 Km S of Fano (60888 inhabitants)
82 Km NW of Teramo (54892 inhabitants)
88 Km S of Pesaro (94582 inhabitants)
93 Km E of Arezzo (99543 inhabitants)
94 Km NW of L'Aquila (69753 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 2.2 2001-04-30
09:56:59
43.117 12.92 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 416859
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2001-04-30 09:56:59 ± 0.158
Latitude 43.1170 ± 0.0076
Longitude 12.9200 ± 0.0170
Depth (km) 3 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 416859

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) 1619.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
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) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00672
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 416859
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:32:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FB9.Z. 2001-04-30T09:57:21.41 10.0 undecidable manual SG 349 0.0052 0.45 0.3
--.MNS.Z. 2001-04-30T09:57:15.36 10.0 undecidable manual PG 193 0.0067 0.55 0.5
--.ARV.Z. 2001-04-30T09:57:13.56 10.0 undecidable manual SG 2 0.0034 -0.2 0.6
--.FB9.Z. 2001-04-30T09:57:11.90 10.0 undecidable manual PG 349 0.0052 -0.59 0.5
--.NRCA.Z. 2001-04-30T09:57:11.48 10.0 undecidable manual SG 153 0.0028 0.21 0.6
--.ARV.Z. 2001-04-30T09:57:07.20 10.0 undecidable manual PG 2 0.0034 -0.5 0.8
--.ASS.Z. 2001-04-30T09:57:07.77 10.0 undecidable manual SG 254 0.0018 0.88 0.1
--.NRCA.Z. 2001-04-30T09:57:05.89 10.0 negative manual PG 153 0.0028 -0.2 2.8
--.ASS.Z. 2001-04-30T09:57:03.21 10.0 negative manual PG 254 0.0018 -0.35 2.3
--.SNTG.Z. 2001-04-30T09:57:02.70 10.0 positive manual PG 6 0.0012 0.55 1.5
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