Earthquake with magnitude of Md 2.0 on date 20-06-2003 and time 08:12:11 (UTC) in region 7 km SE Norcia (PG)

A magnitude Md 2.0 earthquake occured in region: 7 km SE Norcia (PG), on

  • 20-06-2003 08:12:11 (UTC)
  • 20-06-2003 10:12:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7590, 13.1610 at 10 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
Norcia PG 7 4957 4957
Accumoli RI 10 667 5624
Arquata del Tronto AP 11 1178 6802
Cascia PG 13 3217 10019
Castelsantangelo sul Nera MC 15 281 10300
Cittareale RI 16 482 10782
Preci PG 17 724 11506
Montegallo AP 17 523 12029
Amatrice RI 18 2657 14686
Poggiodomo PG 19 117 14803

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km SE of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
47 Km E of Terni (111501 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
94 Km W of Chieti (51815 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
100 Km SW of Ancona (100861 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-VAX 1.9
2003-06-20
08:12:11
42.759 13.161 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 479559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2003-06-20 08:12:11 ± 0.17
Latitude 42.7590 ± 0.0074
Longitude 13.1610 ± 0.0183
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 479559

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1707.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00397
Epicentral distance of station farthest from the epicenter (degree) 0.00680
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 479559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:36:45

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 479559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 2003-06-20T08:12:38.90 10.0 undecidable manual SG 348 0.7548 0.41 0.5
--.MNS.Z. 2003-06-20T08:12:30.80 10.0 undecidable manual SG 223 0.5106 0.15 0.9
--.SNTG.Z. 2003-06-20T08:12:30.76 10.0 undecidable manual SG 342 0.5106 0.63 0.3
--.ASS.Z. 2003-06-20T08:12:28.99 10.0 undecidable manual SG 309 0.4773 0.17 0.8
--.AQU.Z. 2003-06-20T08:12:27.50 10.0 undecidable manual SG 156 0.444 -0.12 0.9
--.ARV.Z. 2003-06-20T08:12:25.97 10.0 undecidable manual PG 348 0.7548 -0.65 0.8
--.ASS.Z. 2003-06-20T08:12:21.88 10.0 undecidable manual PG 309 0.4773 0.38 1.6
--.AQU.Z. 2003-06-20T08:12:21.35 10.0 undecidable manual PG 156 0.444 0.54 1.2
--.MNS.Z. 2003-06-20T08:12:21.64 10.0 undecidable manual PG 223 0.5106 -0.5 1.4
--.SNTG.Z. 2003-06-20T08:12:21.86 10.0 undecidable manual PG 342 0.5106 -0.4 1.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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