Earthquake with magnitude of Md 2.3 on date 28-01-1998 and time 16:24:51 (Italy) in region 3 km SW Preci (PG)

A magnitude Md 2.3 earthquake occured in region: 3 km SW Preci (PG), on

  • 28-01-1998 15:24:51 (UTC)
  • 28-01-1998 16:24:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8600, 13.0170 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
Preci PG 3 724 724
Sellano PG 8 1079 1803
Cerreto di Spoleto PG 9 1075 2878
Norcia PG 10 4957 7835
Visso MC 10 1107 8942
Castelsantangelo sul Nera MC 12 281 9223
Ussita MC 14 444 9667
Monte Cavallo MC 15 145 9812
Cascia PG 16 3217 13029
Vallo di Nera PG 16 364 13393
Poggiodomo PG 18 117 13510
Campello sul Clitunno PG 20 2442 15952

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
58 Km E of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 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 2.3
ML-VAX 1.5
1998-01-28
15:24:51
42.86 13.017 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 321649
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-01-28 15:24:51 ± 0.077
Latitude 42.8600 ± 0.0062
Longitude 13.0170 ± 0.0086
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 321649

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) 987.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.00478
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 321649
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:01:34

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 321649
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. 1998-01-28T15:25:10.63 10.0 undecidable manual SG 207 0.5328 0.23 0.1
--.SNTG.Z. 1998-01-28T15:25:06.20 10.0 undecidable manual SG 352 0.3996 0 0.6
--.ASS.Z. 1998-01-28T15:25:04.19 10.0 undecidable manual SG 307 0.333 0.23 0.3
--.MNS.Z. 1998-01-28T15:25:01.97 10.0 undecidable manual PG 207 0.5328 -0.36 0.3
--.SNTG.Z. 1998-01-28T15:24:59.63 10.0 undecidable manual PG 352 0.3996 -0.17 1
--.ASS.Z. 1998-01-28T15:24:58.68 10.0 undecidable manual PG 307 0.333 0.07 1.6
--.NRCA.Z. 1998-01-28T15:24:56.00 10.0 undecidable manual SG 110 0.0666 0.18 0.5
--.NRCA.Z. 1998-01-28T15:24:53.91 10.0 negative manual PG 110 0.0666 0 3.6
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download