Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 10-01-2011 and time 18:53:49 (UTC) in region 5 km SW Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 5 km SW Norcia (PG), on

  • 10-01-2011 18:53:49 (UTC)
  • 10-01-2011 19:53:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7660, 13.0470 at 8 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
Norcia PG 5 4957 4957
Cascia PG 6 3217 8174
Poggiodomo PG 11 117 8291
Cerreto di Spoleto PG 12 1075 9366
Preci PG 13 724 10090
Monteleone di Spoleto PG 15 599 10689
Vallo di Nera PG 15 364 11053
Sellano PG 17 1079 12132
Castelsantangelo sul Nera MC 17 281 12413
Sant'Anatolia di Narco PG 18 564 12977
Accumoli RI 18 667 13644
Scheggino PG 19 461 14105
Visso MC 19 1107 15212
Cittareale RI 19 482 15694

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SE of Foligno (57155 inhabitants)
40 Km NE of Terni (111501 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
55 Km W of Teramo (54892 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
95 Km W of Montesilvano (53738 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
ML 1.5 		2011-01-10
18:53:49		 42.766 13.047 8 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1159659
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-01-10 18:53:49 ± 0.08
Latitude 42.7660 ± 0.0036
Longitude 13.0470 ± 0.0086
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1159659

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 696
Semi-minor axis of confidence ellipse (meter) 262
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 806.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 17
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.69697
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1159659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:34:45

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1159659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:34:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHE. 2011-01-10T18:54:14.85 0.6 undecidable manual Sg 344 77.367 1.103 31
IV.MURB.HHN. 2011-01-10T18:54:12.56 10.0 undecidable manual Pg 0 0 0
IV.SNTG.HHN. 2011-01-10T18:54:08.11 0.1 undecidable manual Sg 351 54.9006 0.356 87
IV.TERO.HHN. 2011-01-10T18:54:05.83 0.1 undecidable manual Sg 109 48.1185 -0.105 93
IV.SSFR.HHE. 2011-01-10T18:54:03.51 0.3 undecidable manual Pg 344 77.367 -0.174 65
IV.CESI.HHN. 2011-01-10T18:54:00.41 0.1 undecidable manual Sg 336 28.9488 0.077 97
IV.SMA1.EHZ. 2011-01-10T18:54:00.42 0.1 undecidable manual Sg 123 27.8499 0.433 90
IV.FDMO.HHZ. 2011-01-10T18:54:00.64 0.1 undecidable manual Sg 6 30.1476 -0.11 96
IV.T0106.EHZ. 2011-01-10T18:54:00.60 0.3 undecidable manual Pg 152 57.8976 -0.078 69
IV.SNTG.HHN. 2011-01-10T18:53:59.89 0.1 undecidable manual Pg 351 54.9006 -0.33 88
IV.TERO.HHN. 2011-01-10T18:53:58.65 0.1 undecidable manual Pg 109 48.1185 -0.521 85
IV.CESX.HHE. 2011-01-10T18:53:58.30 0.1 undecidable manual Pg 246 41.8248 0.091 94
IV.GUMA.HHE. 2011-01-10T18:53:58.01 0.1 undecidable manual Pg 35 40.3263 0.029 96
IV.ORI.HHN. 2011-01-10T18:53:57.93 10.0 undecidable manual Pg 0 0 0
IV.LNSS.HHZ. 2011-01-10T18:53:56.76 0.1 undecidable manual Sg 182 18.1707 -0.029 100
IV.FDMO.HHZ. 2011-01-10T18:53:56.00 0.1 undecidable manual Pg 6 30.1476 -0.177 95
IV.CESI.HHN. 2011-01-10T18:53:55.80 0.1 undecidable manual Pg 336 28.9488 -0.137 96
IV.SMA1.EHZ. 2011-01-10T18:53:55.90 0.1 undecidable manual Pg 123 27.8499 0.161 95
IV.LNSS.HHZ. 2011-01-10T18:53:53.90 0.1 undecidable manual Pg 182 18.1707 0.01 100
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