Earthquake with magnitude of Md 3.0 on date 22-05-1994 and time 09:35:40 (Italy) in region 5 km NE Norcia (PG)

A magnitude Md 3.0 earthquake occured in region: 5 km NE Norcia (PG), on

  • 22-05-1994 07:35:40 (UTC)
  • 22-05-1994 09:35:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.82, 13.13 at 5 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 5 4957 4957
Castelsantangelo sul Nera MC 8 281 5238
Preci PG 10 724 5962
Visso MC 13 1107 7069
Ussita MC 14 444 7513
Arquata del Tronto AP 15 1178 8691
Cascia PG 15 3217 11908
Montegallo AP 17 523 12431
Accumoli RI 17 667 13098
Cerreto di Spoleto PG 18 1075 14173
Montemonaco AP 18 604 14777
Sellano PG 18 1079 15856

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
97 Km W of Pescara (121014 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km N of Tivoli (56533 inhabitants)
100 Km NW of Chieti (51815 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
Rev 1000 Md 3.0
ML-VAX 2.2
1994-05-22
07:35:40
42.82 13.13 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 210009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-05-22 07:35:40 ± 0.272
Latitude 42.82 ± 0.01
Longitude 13.13 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 210009

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) 2939
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 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.0038
Epicentral distance of station farthest from the epicenter (degree) 0.01991
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 210009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:17:53

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 7
Type of magnitude ML
Reference to an origin 210009
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 Takeoff_angle Residual Weight
--.BDI.Z. 1994-05-22T07:36:20.21 10.0 undecidable manual PN! 304 0.0199 2.16 0
--.RDP.Z. 1994-05-22T07:36:20.43 10.0 undecidable manual SN 195 0.01 1.48 0.1
--.RMP.Z. 1994-05-22T07:36:16.46 10.0 undecidable manual SG 197 0.0095 -1.21 0.1
--.SFI.Z. 1994-05-22T07:36:10.21 10.0 undecidable manual PN! 319 0.0128 3.01 0
--.RSM.Z. 1994-05-22T07:36:05.26 10.0 negative manual PN 335 0.0108 1.03 1.1
--.CRE.Z. 1994-05-22T07:36:04.35 10.0 undecidable manual PN 312 0.0105 0.65 1
--.ARV.Z. 1994-05-22T07:36:04.92 10.0 undecidable manual SG 348 0.0062 -0.84 0.3
--.RMP.Z. 1994-05-22T07:36:04.98 10.0 undecidable manual PG! 197 0.0095 2.91 0
--.RDP.Z. 1994-05-22T07:36:04.70 10.0 undecidable manual PN 195 0.01 1.26 0.4
--.MNS.Z. 1994-05-22T07:36:00.87 10.0 undecidable manual SG 216 0.0049 -0.41 0.5
--.AQU.Z. 1994-05-22T07:35:59.63 10.0 undecidable manual SG 156 0.0045 -0.36 0.5
--.ASS.Z. 1994-05-22T07:35:56.60 10.0 undecidable manual SG 304 0.0038 -0.62 0.4
--.ARV.Z. 1994-05-22T07:35:54.59 10.0 positive manual PG 348 0.0062 -0.61 2.1
--.MNS.Z. 1994-05-22T07:35:52.61 10.0 positive manual PG 216 0.0049 0 3.3
--.AQU.Z. 1994-05-22T07:35:51.52 10.0 positive manual PG 156 0.0045 -0.35 2.8
--.ASS.Z. 1994-05-22T07:35:50.17 10.0 positive manual PG 304 0.0038 -0.1 3.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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