Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 21-12-2010 and time 10:53:30 (UTC) in region 4 km E Campello sul Clitunno (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km E Campello sul Clitunno (PG), on

  • 21-12-2010 10:53:30 (UTC)
  • 21-12-2010 11:53:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8030, 12.8240 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 4 2442 2442
Vallo di Nera PG 5 364 2806
Sant'Anatolia di Narco PG 8 564 3370
Cerreto di Spoleto PG 8 1075 4445
Scheggino PG 10 461 4906
Spoleto PG 10 38218 43124
Trevi PG 10 8469 51593
Castel Ritaldi PG 13 3278 54871
Sellano PG 13 1079 55950
Poggiodomo PG 14 117 56067
Montefalco PG 17 5679 61746
Cascia PG 18 3217 64963
Preci PG 20 724 65687
Foligno PG 20 57155 122842
Monteleone di Spoleto PG 20 599 123441

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SE of Foligno (57155 inhabitants)
31 Km NE of Terni (111501 inhabitants)
49 Km SE of Perugia (166134 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
73 Km NE of Viterbo (67173 inhabitants)
74 Km W of Teramo (54892 inhabitants)
90 Km N of Guidonia Montecelio (88673 inhabitants)
93 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 2.0
ML 1.5 		2010-12-21
10:53:30		 42.803 12.824 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1153009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-12-21 10:53:30 ± 0.09
Latitude 42.8030 ± 0.0054
Longitude 12.8240 ± 0.0074
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1153009

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 557
Semi-minor axis of confidence ellipse (meter) 537
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 143
Circular confidence region, given by single value of horizontal uncertainty (meter) 848.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63402
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1153009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:25:53

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1153009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:25:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATVO.HHE. 2010-12-21T10:53:53.88 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2010-12-21T10:53:49.19 0.3 undecidable manual Sg 335 56.499 0.702 60
IV.SNTG.HHE. 2010-12-21T10:53:47.24 0.3 undecidable manual Sg 11 51.0156 0.21 70
IV.FDMO.HHE. 2010-12-21T10:53:42.02 0.3 undecidable manual Sg 39 33.6441 -0.356 70
IV.SSFR.HHN. 2010-12-21T10:53:42.93 0.3 undecidable manual Pg 357 70.374 -0.112 69
IV.MURB.HHN. 2010-12-21T10:53:41.10 0.3 undecidable manual Pg 335 56.499 0.192 69
NI.AGOR.HHN. 2010-12-21T10:53:41.22 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHZ. 2010-12-21T10:53:41.09 0.3 undecidable manual Sg 223 29.1486 -0.099 74
IV.LNSS.HHE. 2010-12-21T10:53:41.34 0.3 undecidable manual Sg 141 28.3494 0.432 69
IV.NRCA.HHE. 2010-12-21T10:53:39.65 0.3 undecidable manual Sg 82 23.8539 0.198 73
IV.CESI.HHE. 2010-12-21T10:53:39.25 0.3 undecidable manual Sg 16 23.3544 -0.036 76
IV.SNTG.HHE. 2010-12-21T10:53:39.76 0.1 undecidable manual Pg 11 51.0156 -0.304 91
IV.FDMO.HHE. 2010-12-21T10:53:37.20 0.1 undecidable manual Pg 39 33.6441 -0.18 97
IV.CESX.HHZ. 2010-12-21T10:53:36.48 0.1 undecidable manual Pg 223 29.1486 -0.214 97
IV.LNSS.HHE. 2010-12-21T10:53:36.62 0.1 undecidable manual Pg 141 28.3494 0.089 99
IV.NRCA.HHE. 2010-12-21T10:53:35.41 0.1 undecidable manual Pg 82 23.8539 -0.281 96
IV.CESI.HHE. 2010-12-21T10:53:35.70 0.1 undecidable manual Pg 16 23.3544 0.103 100
IV.STR4.BHN. 2010-12-21T10:53:29.29 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHE. 2010-12-21T10:53:27.78 10.0 undecidable manual Pg 0 0 0
IV.MCEL.HHZ. 2010-12-21T10:53:25.11 10.0 undecidable manual Pg 0 0 0
IV.CAFE.HHE. 2010-12-21T10:52:57.25 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