Earthquake with magnitude of Md 2.3 on date 27-10-1998 and time 23:24:38 (UTC) in region 5 km W Prali (TO)

A magnitude Md 2.3 earthquake occured in region: 5 km W Prali (TO), on

  • 27-10-1998 23:24:38 (UTC)
  • 28-10-1998 00:24:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.8870, 6.9810 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
Prali TO 6 246 246
Salza di Pinerolo TO 8 75 321
Massello TO 10 51 372
Sauze di Cesana TO 11 244 616
Sestriere TO 11 929 1545
Perrero TO 12 659 2204
Bobbio Pellice TO 14 563 2767
Pragelato TO 15 776 3543
Cesana Torinese TO 16 967 4510
Villar Pellice TO 17 1076 5586
Roure TO 17 848 6434
Fenestrelle TO 17 544 6978
Pomaretto TO 18 1009 7987
Pramollo TO 18 258 8245
Usseaux TO 18 186 8431
Perosa Argentina TO 19 3285 11716
Sauze d'Oulx TO 19 1109 12825
Claviere TO 19 214 13039
Angrogna TO 20 889 13928
Inverso Pinasca TO 20 730 14658
Oulx TO 20 3307 17965

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km W of Moncalieri (57294 inhabitants)
59 Km W of Torino (890529 inhabitants)
71 Km NW of Cuneo (56081 inhabitants)
96 Km W of Asti (76202 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 1.6
1998-10-27
23:24:38
44.887 6.981 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 354119
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-10-27 23:24:38 ± 0.28
Latitude 44.8870 ± 0.0253
Longitude 6.9810 ± 0.0351
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 354119

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) 3946.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 153
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.01570
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 354119
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:31:54

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 354119
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
--.BOB.Z. 1998-10-27T23:25:09.00 10.0 undecidable manual PN 92 1.7427 0.19 1.2
--.MCGN.Z. 1998-10-27T23:25:01.37 10.0 undecidable manual PN 32 1.2765 -0.98 0.5
--.ORO.Z. 1998-10-27T23:24:59.61 10.0 undecidable manual PG 42 1.0101 0.88 0.7
--.CKI.Z. 1998-10-27T23:24:58.28 10.0 undecidable manual PN 116 1.0212 -0.66 1.1
--.BNI.Z. 1998-10-27T23:24:48.50 10.0 undecidable manual SG 307 0.2664 -0.79 0.4
--.DOI.Z. 1998-10-27T23:24:48.20 10.0 undecidable manual PG 153 0.4218 0.3 1.7
--.BNI.Z. 1998-10-27T23:24:45.41 10.0 undecidable manual PG 307 0.2664 0.59 1.3
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