Earthquake with magnitude of Md 2.6 on date 04-11-1989 and time 03:41:06 (Italy) in region 3 km W Norcia (PG)

A magnitude Md 2.6 earthquake occured in region: 3 km W Norcia (PG), on

  • 04-11-1989 02:41:06 (UTC)
  • 04-11-1989 03:41:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.06 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 3 4957 4957
Preci PG 9 724 5681
Cascia PG 10 3217 8898
Cerreto di Spoleto PG 12 1075 9973
Castelsantangelo sul Nera MC 13 281 10254
Visso MC 14 1107 11361
Poggiodomo PG 15 117 11478
Sellano PG 15 1079 12557
Vallo di Nera PG 17 364 12921
Ussita MC 17 444 13365
Monteleone di Spoleto PG 19 599 13964
Arquata del Tronto AP 19 1178 15142
Accumoli RI 19 667 15809

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
55 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
64 Km SE of Perugia (166134 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
98 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
Rev 1000 Md 2.6
ML-VAX 2.0
1989-11-04
02:41:06
42.8 13.06 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 103629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-11-04 02:41:06 ± 0.275
Latitude 42.80 ± 0.01
Longitude 13.06 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 103629

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) 2491
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00332
Epicentral distance of station farthest from the epicenter (degree) 0.01101
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 103629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:36:33

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 103629
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
--.SDI.Z. 1989-11-04T02:41:49.00 10.0 undecidable manual SN 153 0.011 1.33 0.2
--.CP9.Z. 1989-11-04T02:41:40.79 10.0 undecidable manual SG 185 0.0085 0.9 0.4
--.AM8.Z. 1989-11-04T02:41:37.80 10.0 undecidable manual SG 27 0.0075 1.26 0.2
--.SDI.Z. 1989-11-04T02:41:30.50 10.0 undecidable manual PN 153 0.011 0.16 1.5
--.CP9.Z. 1989-11-04T02:41:27.10 10.0 undecidable manual PG 185 0.0085 1.25 0.6
--.MNS.Z. 1989-11-04T02:41:23.66 10.0 undecidable manual SG 214 0.0045 -2.09 0
--.AM8.Z. 1989-11-04T02:41:23.95 10.0 undecidable manual PG 27 0.0075 0.03 1.9
--.CM8.Z. 1989-11-04T02:41:22.00 10.0 undecidable manual SG 8 0.0035 0.03 0.9
--.ASS.Z. 1989-11-04T02:41:22.32 10.0 undecidable manual SG 311 0.0036 0.29 0.8
--.ALP.Z. 1989-11-04T02:41:19.95 10.0 undecidable manual SG 93 0.0033 -1.09 0.4
--.MNS.Z. 1989-11-04T02:41:16.81 10.0 undecidable manual PG 214 0.0045 -0.88 1.3
--.ASS.Z. 1989-11-04T02:41:15.72 10.0 undecidable manual PG 311 0.0036 0.18 2.1
--.CM8.Z. 1989-11-04T02:41:15.30 10.0 undecidable manual PG 8 0.0035 -0.48 1.9
--.ALP.Z. 1989-11-04T02:41:14.46 10.0 undecidable manual PG 93 0.0033 -0.51 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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