Earthquake with magnitude of Md 2.5 on date 19-01-1998 and time 21:26:20 (Italy) in region 5 km NE Norcia (PG)

A magnitude Md 2.5 earthquake occured in region: 5 km NE Norcia (PG), on

  • 19-01-1998 20:26:20 (UTC)
  • 19-01-1998 21:26:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8290, 13.1380 at 19 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 12 1107 7069
Ussita MC 13 444 7513
Arquata del Tronto AP 14 1178 8691
Cascia PG 16 3217 11908
Montegallo AP 16 523 12431
Montemonaco AP 17 604 13035
Accumoli RI 17 667 13702
Cerreto di Spoleto PG 18 1075 14777
Sellano PG 18 1079 15856
Bolognola MC 20 142 15998

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
50 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)
93 Km SW of Ancona (100861 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km NW of Chieti (51815 inhabitants)
100 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 2.5
ML-VAX 1.7
1998-01-19
20:26:20
42.829 13.138 19 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 321159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-01-19 20:26:20 ± 0.186
Latitude 42.8290 ± 0.0069
Longitude 13.1380 ± 0.0237
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 321159

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) 2081.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 229
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00016
Epicentral distance of station farthest from the epicenter (degree) 0.00809
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 321159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:01:06

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 321159
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
--.MNS.Z. 1998-01-19T20:26:40.90 10.0 undecidable manual SG 217 0.5439 -0.41 0.2
--.FB9.Z. 1998-01-19T20:26:37.86 10.0 undecidable manual PN 343 0.8991 -0.02 1.5
--.SNTG.Z. 1998-01-19T20:26:37.19 10.0 undecidable manual SG 341 0.444 0.05 0.9
--.ASS.Z. 1998-01-19T20:26:36.00 10.0 undecidable manual SG 303 0.4218 -0.38 0.3
--.ARV.Z. 1998-01-19T20:26:34.30 10.0 undecidable manual PG 348 0.6882 -0.05 1.7
--.MNS.Z. 1998-01-19T20:26:32.25 10.0 undecidable manual PG 217 0.5439 0.22 1.3
--.SNTG.Z. 1998-01-19T20:26:30.30 10.0 undecidable manual PG 341 0.444 -0.05 2.1
--.ASS.Z. 1998-01-19T20:26:30.00 10.0 undecidable manual PG 303 0.4218 0.34 0.8
--.NRCA.Z. 1998-01-19T20:26:27.00 10.0 undecidable manual SG 283 0.0222 0.41 0.2
--.NRCA.Z. 1998-01-19T20:26:23.71 10.0 undecidable manual PG 283 0.0222 -0.29 1.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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