Earthquake with magnitude of Md 2.4 on date 16-10-1999 and time 13:51:10 (Italy) in region 5 km NE Cittareale (RI)

A magnitude Md 2.4 earthquake occured in region: 5 km NE Cittareale (RI), on

  • 16-10-1999 11:51:10 (UTC)
  • 16-10-1999 13:51:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6600, 13.1850 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
Cittareale RI 5 482 482
Accumoli RI 7 667 1149
Amatrice RI 9 2657 3806
Cascia PG 15 3217 7023
Arquata del Tronto AP 16 1178 8201
Montereale AQ 16 2581 10782
Norcia PG 17 4957 15739
Posta RI 17 694 16433
Borbona RI 17 617 17050
Capitignano AQ 18 665 17715
Campotosto AQ 19 542 18257
Monteleone di Spoleto PG 19 599 18856

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
45 Km E of Terni (111501 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
87 Km W of Pescara (121014 inhabitants)
88 Km W of Chieti (51815 inhabitants)
92 Km E 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 2.4 1999-10-16
11:51:10
42.66 13.185 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 375749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-10-16 11:51:10 ± 0.423
Latitude 42.6600 ± 0.0110
Longitude 13.1850 ± 0.0388
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 375749

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) 3398.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 250
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00559
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 375749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:52:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SNTG.Z. 1999-10-16T11:51:32.30 10.0 undecidable manual SG 343 0.6216 0.14 0.7
--.ASS.Z. 1999-10-16T11:51:29.64 10.0 undecidable manual SG 315 0.555 -0.31 0.3
--.MNS.Z. 1999-10-16T11:51:26.80 10.0 undecidable manual SG 233 0.4551 0 0.7
--.SNTG.Z. 1999-10-16T11:51:22.56 10.0 undecidable manual PG 343 0.6216 -0.11 1.5
--.ASS.Z. 1999-10-16T11:51:22.57 10.0 undecidable manual PG 315 0.555 1.03 0.2
--.MNS.Z. 1999-10-16T11:51:19.72 10.0 undecidable manual PG 233 0.4551 -0.01 1.9
--.NRCA.Z. 1999-10-16T11:51:17.76 10.0 undecidable manual SG 343 0.1776 -0.02 0.7
--.NRCA.Z. 1999-10-16T11:51:14.50 10.0 undecidable manual PG 343 0.1776 -0.02 1.9
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