Earthquake with magnitude of Md 2.3 on date 26-02-1998 and time 05:54:09 (Italy) in region 6 km S Preci (PG)

A magnitude Md 2.3 earthquake occured in region: 6 km S Preci (PG), on

  • 26-02-1998 04:54:09 (UTC)
  • 26-02-1998 05:54:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.04 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 6 724 724
Norcia PG 6 4957 5681
Cerreto di Spoleto PG 10 1075 6756
Sellano PG 11 1079 7835
Cascia PG 12 3217 11052
Castelsantangelo sul Nera MC 12 281 11333
Visso MC 13 1107 12440
Poggiodomo PG 15 117 12557
Vallo di Nera PG 15 364 12921
Ussita MC 16 444 13365
Monte Cavallo MC 19 145 13510
Sant'Anatolia di Narco PG 19 564 14074

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
61 Km SE of Perugia (166134 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
98 Km W of Montesilvano (53738 inhabitants)
98 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
Rev 1000 Md 2.3
ML-VAX 2.1
1998-02-26
04:54:09
42.83 13.04 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 323859
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-02-26 04:54:09 ± 0.107
Latitude 42.83 ± 0.00
Longitude 13.04 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 323859

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) 1178.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00324
Epicentral distance of station farthest from the epicenter (degree) 0.00761
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 323859
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:03:37

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 323859
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
--.ARV.Z. 1998-02-26T04:54:33.73 10.0 undecidable manual SG 354 0.0061 0.56 0
--.MNS.Z. 1998-02-26T04:54:27.98 10.0 undecidable manual SG 210 0.0046 -0.02 0.7
--.PQ9.Z. 1998-02-26T04:54:26.40 10.0 undecidable manual PG 161 0.0076 -0.04 1.4
--.SNTG.Z. 1998-02-26T04:54:25.37 10.0 undecidable manual SG 350 0.0039 -0.04 0.7
--.ASS.Z. 1998-02-26T04:54:23.90 10.0 undecidable manual SG 309 0.0032 -0.17 0.5
--.ARV.Z. 1998-02-26T04:54:22.82 10.0 undecidable manual PG 354 0.0061 -0.39 0.3
--.MNS.Z. 1998-02-26T04:54:20.22 10.0 undecidable manual PG 210 0.0046 0 1.8
--.SNTG.Z. 1998-02-26T04:54:18.70 10.0 undecidable manual PG 350 0.0039 -0.04 1.8
--.ASS.Z. 1998-02-26T04:54:17.56 10.0 undecidable manual PG 309 0.0032 0.07 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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