Earthquake with magnitude of Md 2.4 on date 10-10-1999 and time 22:23:22 (Italy) in region 4 km NW Cittareale (RI)

A magnitude Md 2.4 earthquake occured in region: 4 km NW Cittareale (RI), on

  • 10-10-1999 20:23:22 (UTC)
  • 10-10-1999 22:23:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6510, 13.1400 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
Cittareale RI 4 482 482
Accumoli RI 10 667 1149
Amatrice RI 12 2657 3806
Cascia PG 13 3217 7023
Posta RI 15 694 7717
Monteleone di Spoleto PG 15 599 8316
Borbona RI 15 617 8933
Norcia PG 16 4957 13890
Montereale AQ 17 2581 16471
Leonessa RI 17 2435 18906
Poggiodomo PG 18 117 19023
Arquata del Tronto AP 19 1178 20201
Capitignano AQ 20 665 20866

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of L'Aquila (69753 inhabitants)
42 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
80 Km SE of Perugia (166134 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
90 Km W of Pescara (121014 inhabitants)
91 Km W of Chieti (51815 inhabitants)
100 Km NE of Roma (2864731 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 1999-10-10
20:23:22
42.651 13.14 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 374949
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-10-10 20:23:22 ± 0.072
Latitude 42.6510 ± 0.0030
Longitude 13.1400 ± 0.0085
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 374949

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) 769.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.00963
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 374949
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:52:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FB9.Z. 1999-10-10T20:23:59.48 10.0 undecidable manual SG 345 1.0656 -0.32 0.2
--.ARV.Z. 1999-10-10T20:23:53.20 10.0 undecidable manual SG 350 0.8547 0.1 0.6
--.SNTG.Z. 1999-10-10T20:23:45.00 10.0 undecidable manual SG 346 0.6216 -0.27 0.3
--.FB9.Z. 1999-10-10T20:23:44.11 10.0 undecidable manual PG 345 1.0656 0.18 1
--.SDI.Z. 1999-10-10T20:23:44.00 10.0 undecidable manual PG 151 1.0656 0.26 0.7
--.ASS.Z. 1999-10-10T20:23:43.21 10.0 undecidable manual SG 319 0.5439 0.39 0.1
--.ARV.Z. 1999-10-10T20:23:40.00 10.0 undecidable manual PG 350 0.8547 0.04 1.8
--.MNS.Z. 1999-10-10T20:23:39.13 10.0 undecidable manual SG 231 0.4218 0.27 0.3
--.PQ9.Z. 1999-10-10T20:23:36.00 10.0 undecidable manual PG 162 0.6549 -0.2 1.2
--.AQU.Z. 1999-10-10T20:23:35.60 10.0 undecidable manual SG 146 0.3552 -0.34 0.2
--.SNTG.Z. 1999-10-10T20:23:35.50 10.0 undecidable manual PG 346 0.6216 -0.04 2.1
--.ASS.Z. 1999-10-10T20:23:33.96 10.0 undecidable manual PG 319 0.5439 -0.16 1.5
--.MNS.Z. 1999-10-10T20:23:31.64 10.0 undecidable manual PG 231 0.4218 -0.2 1.3
--.AQU.Z. 1999-10-10T20:23:30.31 10.0 undecidable manual PG 146 0.3552 0.16 1.5
--.NRCA.Z. 1999-10-10T20:23:29.40 10.0 undecidable manual SG 353 0.1776 -0.04 0.9
--.NRCA.Z. 1999-10-10T20:23:26.43 10.0 undecidable manual PG 353 0.1776 0.03 2.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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