Earthquake with magnitude of ML 0.7 on date 25-04-2011 and time 05:38:44 (Italy) in region 6 km E Nocera Umbra (PG)

A magnitude ML 0.7 earthquake occured in region: 6 km E Nocera Umbra (PG), on

  • 25-04-2011 03:38:44 (UTC)
  • 25-04-2011 05:38:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1130, 12.8640 at 15 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
Nocera Umbra PG 6 5839 5839
Sefro MC 8 422 6261
Serravalle di Chienti MC 9 1070 7331
Fiuminata MC 10 1402 8733
Valtopina PG 11 1398 10131
Pioraco MC 12 1134 11265
Gualdo Tadino PG 15 15208 26473
Muccia MC 15 915 27388
Camerino MC 17 6974 34362
Esanatoglia MC 17 2034 36396
Pieve Torina MC 17 1458 37854
Monte Cavallo MC 17 145 37999
Pievebovigliana MC 19 866 38865
Castelraimondo MC 19 4587 43452
Matelica MC 20 9981 53433

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
64 Km N of Terni (111501 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
82 Km S of Fano (60888 inhabitants)
85 Km NW of Teramo (54892 inhabitants)
89 Km E of Arezzo (99543 inhabitants)
89 Km S of Pesaro (94582 inhabitants)
95 Km NW of L'Aquila (69753 inhabitants)
99 Km NE of Viterbo (67173 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 1.7
ML 0.7
2011-04-25
03:38:44
43.113 12.864 15 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1201749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-25 03:38:44 ± 0.13
Latitude 43.1130 ± 0.0045
Longitude 12.8640 ± 0.0148
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1201749

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1177
Semi-minor axis of confidence ellipse (meter) 380
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 1300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 186
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) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.11242
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1201749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:31:03

Md:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1201749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:31:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHN. 2011-04-25T03:38:56.71 0.3 undecidable manual Sg 350 36.4413 0.237 90
IV.NRCA.HHN. 2011-04-25T03:38:56.75 0.3 undecidable manual Sg 147 37.1295 0.107 95
IV.SSFR.HHN. 2011-04-25T03:38:51.09 0.3 undecidable manual Pg 350 36.4413 -0.191 94
IV.NRCA.HHN. 2011-04-25T03:38:51.29 0.3 undecidable manual Pg 147 37.1295 -0.089 94
IV.SNTG.HHE. 2011-04-25T03:38:51.48 0.3 undecidable manual Sg 22 16.9719 -0.05 100
IV.CESI.HHE. 2011-04-25T03:38:50.58 0.3 undecidable manual Sg 164 12.4764 0.015 100
IV.SNTG.HHE. 2011-04-25T03:38:48.37 0.3 undecidable manual Pg 22 16.9719 -0.057 99
IV.CESI.HHE. 2011-04-25T03:38:47.91 0.3 undecidable manual Pg 164 12.4764 0.041 100
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