Earthquake with magnitude of Md 2.2 on date 03-04-1998 and time 13:31:21 (UTC) in region 5 km NE Nocera Umbra (PG)

A magnitude Md 2.2 earthquake occured in region: 5 km NE Nocera Umbra (PG), on

  • 03-04-1998 13:31:21 (UTC)
  • 03-04-1998 15:31:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.153, 12.815 at 4 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
Nocera Umbra PG 5 5839 5839
Gualdo Tadino PG 9 15208 21047
Fiuminata MC 10 1402 22449
Sefro MC 11 422 22871
Valtopina PG 11 1398 24269
Pioraco MC 14 1134 25403
Serravalle di Chienti MC 14 1070 26473
Esanatoglia MC 15 2034 28507
Fossato di Vico PG 16 2840 31347
Valfabbrica PG 17 3389 34736
Assisi PG 19 28299 63035
Matelica MC 20 9981 73016

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Foligno (57155 inhabitants)
35 Km E of Perugia (166134 inhabitants)
67 Km N of Terni (111501 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
79 Km S of Fano (60888 inhabitants)
83 Km E of Arezzo (99543 inhabitants)
85 Km S of Pesaro (94582 inhabitants)
91 Km NW of Teramo (54892 inhabitants)
100 Km NE of Viterbo (67173 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 2.2
ML-VAX 1.5
1998-04-03
13:31:21
43.153 12.815 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 330319
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-04-03 13:31:21 ± 0.064
Latitude 43.1530 ± 0.0039
Longitude 12.8150 ± 0.0061
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 330319

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) 654.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00478
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 330319
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:09:34

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 330319
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
--.FB9.Z. 1998-04-03T13:31:41.99 10.0 undecidable manual SG 357 0.0048 -0.16 0.4
--.NRCA.Z. 1998-04-03T13:31:37.70 10.0 undecidable manual SG 145 0.0034 0.27 0.2
--.ARV.Z. 1998-04-03T13:31:35.52 10.0 undecidable manual SG 15 0.0032 -0.19 0.4
--.FB9.Z. 1998-04-03T13:31:33.74 10.0 undecidable manual PG 357 0.0048 0.18 0.8
--.NRCA.Z. 1998-04-03T13:31:30.25 10.0 undecidable manual PG 145 0.0034 -0.22 0.6
--.ARV.Z. 1998-04-03T13:31:29.79 10.0 undecidable manual PG 15 0.0032 -0.05 1.9
--.SNTG.Z. 1998-04-03T13:31:27.50 10.0 undecidable manual SG 41 0.0012 0.19 0.4
--.ASS.Z. 1998-04-03T13:31:27.81 10.0 undecidable manual SG 232 0.0013 0.03 0.9
--.ASS.Z. 1998-04-03T13:31:25.26 10.0 undecidable manual PG 232 0.0013 0 2.2
--.SNTG.Z. 1998-04-03T13:31:24.98 10.0 undecidable manual PG 41 0.0012 -0.01 2.2
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