Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 26-07-2009 and time 07:29:51 (Italy) in region 5 km NW Norcia (PG)

A magnitude ML 2.0 earthquake occured in region: 5 km NW Norcia (PG), on

  • 26-07-2009 05:29:51 (UTC)
  • 26-07-2009 07:29:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8240, 13.0490 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
Norcia PG 5 4957 4957
Preci PG 6 724 5681
Cerreto di Spoleto PG 11 1075 6756
Castelsantangelo sul Nera MC 12 281 7037
Cascia PG 12 3217 10254
Sellano PG 12 1079 11333
Visso MC 12 1107 12440
Ussita MC 15 444 12884
Poggiodomo PG 16 117 13001
Vallo di Nera PG 16 364 13365
Monte Cavallo MC 19 145 13510
Sant'Anatolia di Narco PG 20 564 14074

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
57 Km W of Teramo (54892 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
62 Km SE of Perugia (166134 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
98 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 2.2
ML 2.0 		2009-07-26
05:29:51		 42.824 13.049 9 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 935809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-26 05:29:51 ± 0.07
Latitude 42.8240 ± 0.0036
Longitude 13.0490 ± 0.0061
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 935809

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 506
Semi-minor axis of confidence ellipse (meter) 132
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.89123
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 935809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:50:16

Md:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 935809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:50:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SDI.SHZ. 2009-07-26T05:30:16.67 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHZ. 2009-07-26T05:30:15.44 0.3 undecidable manual Sg 353 75.2691 0.993 49
IV.FIAM.HHZ. 2009-07-26T05:30:11.13 0.1 undecidable manual Sg 175 61.8936 0.261 86
IV.CING.HHE. 2009-07-26T05:30:11.27 0.1 undecidable manual Sg 11 62.3931 0.283 86
IV.T0104.EHZ. 2009-07-26T05:30:10.25 0.1 undecidable manual Sg 155 56.5989 0.793 74
IV.PTQR.SHZ. 2009-07-26T05:30:10.48 10.0 undecidable manual Pg 0 0 0
IV.MNS.HHZ. 2009-07-26T05:30:09.80 0.3 undecidable manual Sg 212 57.1983 0.194 66
IV.FSSB.HHE. 2009-07-26T05:30:08.59 0.1 undecidable manual Pg 347 98.9232 0.198 81
IV.SNTG.SHZ. 2009-07-26T05:30:07.90 0.3 undecidable manual Sg 350 48.618 0.571 61
IV.TERO.HHN. 2009-07-26T05:30:07.32 0.1 undecidable manual Sg 116 50.4162 -0.479 84
IV.PIEI.HHE. 2009-07-26T05:30:06.76 0.3 undecidable manual Pg 332 89.244 -0.145 63
IV.CESX.HHN. 2009-07-26T05:30:06.45 0.1 undecidable manual Sg 238 45.0216 0.09 92
IV.CAMP.HHZ. 2009-07-26T05:30:05.74 0.1 undecidable manual Sg 137 43.4232 -0.183 91
IV.MGAB.HHZ. 2009-07-26T05:30:05.35 0.1 undecidable manual Pg 278 76.8675 0.36 82
IV.ASSB.HHZ. 2009-07-26T05:30:04.60 0.1 undecidable manual Sg 308 39.9267 -0.408 87
IV.ARVD.HHZ. 2009-07-26T05:30:04.50 0.3 undecidable manual Pg 353 75.2691 -0.254 63
IV.MURB.HHN. 2009-07-26T05:30:03.14 0.3 undecidable manual Pg 319 64.6908 0.024 68
IV.GUMA.HHE. 2009-07-26T05:30:03.88 0.1 undecidable manual Sg 41 35.2425 0.13 93
IV.FIAM.HHZ. 2009-07-26T05:30:02.29 0.1 undecidable manual Pg 175 61.8936 -0.4 84
IV.CING.HHE. 2009-07-26T05:30:02.49 0.1 undecidable manual Pg 11 62.3931 -0.266 86
IV.SAN2.EHZ. 2009-07-26T05:30:02.82 0.3 undecidable manual Sg 138 28.6491 0.857 56
IV.T0104.EHZ. 2009-07-26T05:30:01.56 0.3 undecidable manual Pg 155 56.5989 -0.313 65
IV.MNS.HHZ. 2009-07-26T05:30:01.98 0.3 undecidable manual Pg 212 57.1983 0.021 69
IV.CESX.HHN. 2009-07-26T05:30:00.22 0.3 undecidable manual Pg 238 45.0216 0.136 68
IV.CESI.HHZ. 2009-07-26T05:30:00.07 0.1 undecidable manual Sg 330 23.2545 -0.153 95
IV.SNTG.SHZ. 2009-07-26T05:30:00.31 0.1 positive manual Pg 350 48.618 -0.334 87
IV.LNSS.HHZ. 2009-07-26T05:30:00.54 0.1 undecidable manual Sg 182 24.5532 -0.086 96
IV.TERO.HHN. 2009-07-26T05:30:00.41 0.1 undecidable manual Pg 116 50.4162 -0.506 83
IV.CAMP.HHZ. 2009-07-26T05:29:59.46 0.1 undecidable manual Pg 137 43.4232 -0.373 87
IV.ASSB.HHZ. 2009-07-26T05:29:59.03 0.1 positive manual Pg 308 39.9267 -0.275 90
IV.GUMA.HHE. 2009-07-26T05:29:58.57 0.1 undecidable manual Pg 41 35.2425 -0.008 95
IV.SAN2.EHZ. 2009-07-26T05:29:57.48 0.1 undecidable manual Pg 138 28.6491 -0.067 95
IV.LNSS.HHZ. 2009-07-26T05:29:56.75 0.1 positive manual Pg 182 24.5532 -0.024 97
IV.CESI.HHZ. 2009-07-26T05:29:56.53 0.1 positive manual Pg 330 23.2545 -0.013 97
IV.NRCA.HHE. 2009-07-26T05:29:55.30 0.1 undecidable manual Sg 78 5.3946 0.03 100
IV.NRCA.HHE. 2009-07-26T05:29:53.93 0.1 negative manual Pg 78 5.3946 0.247 96
MN.AQU.HHE. 2009-07-26T05:29:46.97 10.0 undecidable manual Pg 0 0 0
IV.ORI.HHZ. 2009-07-26T05:29:44.47 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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