Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 19-08-2011 and time 09:11:47 (Italy) in region 5 km SW Campello sul Clitunno (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km SW Campello sul Clitunno (PG), on

  • 19-08-2011 07:11:47 (UTC)
  • 19-08-2011 09:11:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7890, 12.7430 at 9 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Campello sul Clitunno PG 5 2442 2442
Spoleto PG 6 38218 40660
Castel Ritaldi PG 7 3278 43938
Sant'Anatolia di Narco PG 10 564 44502
Trevi PG 10 8469 52971
Vallo di Nera PG 10 364 53335
Scheggino PG 11 461 53796
Montefalco PG 14 5679 59475
Giano dell'Umbria PG 14 3846 63321
Cerreto di Spoleto PG 15 1075 64396
Massa Martana PG 18 3770 68166
Poggiodomo PG 18 117 68283
Sellano PG 19 1079 69362
Foligno PG 19 57155 126517
Ferentillo TR 19 1913 128430
Acquasparta TR 19 4778 133208
Bevagna PG 20 5081 138289

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Foligno (57155 inhabitants)
27 Km NE of Terni (111501 inhabitants)
46 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
80 Km W of Teramo (54892 inhabitants)
88 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 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 1.8
ML 1.1 		2011-08-19
07:11:47		 42.789 12.743 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1274409
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-19 07:11:47 ± 0.05
Latitude 42.7890 ± 0.0027
Longitude 12.7430 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1274409

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 287
Semi-minor axis of confidence ellipse (meter) 259
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 137
Circular confidence region, given by single value of horizontal uncertainty (meter) 424.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47844
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1274409
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:10:30

Md:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1274409
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:10:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGAB.HHE. 2011-08-19T07:12:04.80 0.6 undecidable manual Sg 285 53.1024 0.196 46
NI.AGOR.HHZ. 2011-08-19T07:12:03.25 10.0 undecidable manual Pg 0 0 0
IV.ATCC.EHN. 2011-08-19T07:12:02.46 0.3 undecidable manual Sg 349 44.7219 0.084 72
IV.FDMO.HHN. 2011-08-19T07:12:00.75 0.3 undecidable manual Sg 45 39.2274 -0.156 72
IV.LNSS.HHN. 2011-08-19T07:11:59.01 0.3 undecidable manual Sg 130 31.8459 0.136 73
IV.CESI.HHE. 2011-08-19T07:11:57.29 0.1 undecidable manual Sg 29 27.3504 -0.075 100
IV.MGAB.HHE. 2011-08-19T07:11:57.15 0.6 undecidable manual Pg 285 53.1024 -0.193 46
IV.ATCC.EHN. 2011-08-19T07:11:56.08 0.3 undecidable manual Pg 349 44.7219 0.023 73
IV.FDMO.HHN. 2011-08-19T07:11:55.17 0.3 undecidable manual Pg 45 39.2274 -0.038 74
IV.CESX.HHZ. 2011-08-19T07:11:55.99 0.3 undecidable manual Sg 212 23.754 -0.183 74
IV.LNSS.HHN. 2011-08-19T07:11:54.02 0.1 undecidable manual Pg 130 31.8459 -0.015 100
IV.CESI.HHE. 2011-08-19T07:11:53.31 0.3 undecidable manual Pg 29 27.3504 0.148 74
IV.CESX.HHZ. 2011-08-19T07:11:52.57 0.3 undecidable manual Pg 212 23.754 0.095 75
IV.ORI.HHZ. 2011-08-19T07:11:44.31 10.0 undecidable manual Sg 0 0 0
IV.ORI.HHZ. 2011-08-19T07:11:39.06 10.0 undecidable manual Pg 0 0 0
IV.BDI.HHZ. 2011-08-19T07:11:39.83 10.0 undecidable manual Sg 0 0 0
IV.BDI.HHZ. 2011-08-19T07:11:36.34 10.0 undecidable manual Pg 0 0 0
IV.FAGN.HHE. 2011-08-19T07:11:26.12 10.0 undecidable manual Pg 0 0 0
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