Earthquake with magnitude of Md 2.4 on date 10-01-1999 and time 05:55:53 (Italy) in region 3 km E Leonessa (RI)

A magnitude Md 2.4 earthquake occured in region: 3 km E Leonessa (RI), on

  • 10-01-1999 04:55:53 (UTC)
  • 10-01-1999 05:55:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.57, 12.99 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
Leonessa RI 3 2435 2435
Monteleone di Spoleto PG 9 599 3034
Posta RI 10 694 3728
Poggio Bustone RI 12 2055 5783
Polino TR 12 233 6016
Rivodutri RI 13 1253 7269
Borbona RI 13 617 7886
Cantalice RI 14 2755 10641
Morro Reatino RI 14 373 11014
Micigliano RI 14 127 11141
Cittareale RI 15 482 11623
Poggiodomo PG 16 117 11740
Cascia PG 16 3217 14957
Labro RI 17 374 15331
Ferentillo TR 17 1913 17244
Arrone TR 18 2763 20007
Montefranco TR 19 1276 21283
Antrodoco RI 19 2588 23871
Colli sul Velino RI 19 533 24404
Borgo Velino RI 19 972 25376
Castel Sant'Angelo RI 20 1308 26684

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Terni (111501 inhabitants)
42 Km NW of L'Aquila (69753 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
59 Km W of Teramo (54892 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km N of Tivoli (56533 inhabitants)
75 Km E of Viterbo (67173 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
86 Km NE of Roma (2864731 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
100 Km W of Chieti (51815 inhabitants)
100 Km N of Velletri (53303 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 2.4 1999-01-10
04:55:53
42.57 12.99 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 357459
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-01-10 04:55:53 ± 0.143
Latitude 42.57 ± 0.01
Longitude 12.99 ± 0.01
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 357459

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) 1268.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.01012
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 357459
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:35:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FB9.Z. 1999-01-10T04:56:32.30 10.0 undecidable manual SN 352 0.0101 -0.28 0.4
--.FB9.Z. 1999-01-10T04:56:16.67 10.0 undecidable manual PN 352 0.0101 0.83 0.2
--.SDI.Z. 1999-01-10T04:56:14.69 10.0 undecidable manual PG 144 0.0095 0.03 1.3
--.ASS.Z. 1999-01-10T04:56:13.11 10.0 undecidable manual SG 333 0.0049 -0.91 0.1
--.AQU.Z. 1999-01-10T04:56:07.52 10.0 undecidable manual SG 125 0.0033 -0.27 0.6
--.PQ9.Z. 1999-01-10T04:56:06.94 10.0 undecidable manual PG 151 0.0056 0.19 1.6
--.NRCA.Z. 1999-01-10T04:56:04.23 10.0 undecidable manual SG 18 0.0024 0.2 0.7
--.ASS.Z. 1999-01-10T04:56:04.77 10.0 undecidable manual PG 333 0.0049 -0.52 0.9
--.MNS.Z. 1999-01-10T04:56:04.39 10.0 undecidable manual SG 230 0.0026 -0.47 0.4
--.AQU.Z. 1999-01-10T04:56:01.24 10.0 undecidable manual PG 125 0.0033 -0.45 1.1
--.MNS.Z. 1999-01-10T04:56:00.20 10.0 positive manual PG 230 0.0026 0.2 3.3
--.NRCA.Z. 1999-01-10T04:55:59.71 10.0 undecidable manual PG 18 0.0024 0.19 1.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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