Earthquake with magnitude of Md 2.4 on date 03-08-1999 and time 10:05:36 (Italy) in region 5 km E Leonessa (RI)

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

  • 03-08-1999 08:05:36 (UTC)
  • 03-08-1999 10:05:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.58, 13.02 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
Leonessa RI 5 2435 2435
Posta RI 9 694 3129
Monteleone di Spoleto PG 10 599 3728
Borbona RI 12 617 4345
Cittareale RI 12 482 4827
Poggio Bustone RI 14 2055 6882
Micigliano RI 15 127 7009
Polino TR 15 233 7242
Cascia PG 15 3217 10459
Rivodutri RI 16 1253 11712
Cantalice RI 16 2755 14467
Poggiodomo PG 16 117 14584
Morro Reatino RI 17 373 14957
Antrodoco RI 19 2588 17545
Montereale AQ 19 2581 20126
Labro RI 19 374 20500
Ferentillo TR 20 1913 22413
Borgo Velino RI 20 972 23385

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Terni (111501 inhabitants)
40 Km NW of L'Aquila (69753 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
56 Km W of Teramo (54892 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km N of Tivoli (56533 inhabitants)
78 Km E of Viterbo (67173 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
97 Km W of Chieti (51815 inhabitants)
98 Km W of Pescara (121014 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
ML-VAX 1.5
1999-08-03
08:05:36
42.58 13.02 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 371429
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-08-03 08:05:36 ± 0.091
Latitude 42.58 ± 0.01
Longitude 13.02 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 371429

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) 988.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.00607
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 371429
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:48:33

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 371429
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
--.SNTG.Z. 1999-08-03T08:06:00.21 10.0 undecidable manual SG 354 0.0061 0.51 0
--.ASS.Z. 1999-08-03T08:05:55.31 10.0 undecidable manual SG 330 0.0049 -0.43 0.1
--.SNTG.Z. 1999-08-03T08:05:49.92 10.0 undecidable manual PG 354 0.0061 0.19 1.1
--.MNS.Z. 1999-08-03T08:05:48.16 10.0 undecidable manual SG 232 0.0028 -0.18 0.6
--.ASS.Z. 1999-08-03T08:05:47.36 10.0 undecidable manual PG 330 0.0049 -0.09 1.6
--.NRCA.Z. 1999-08-03T08:05:46.30 10.0 undecidable manual SG 14 0.0023 -0.06 0.8
--.MNS.Z. 1999-08-03T08:05:43.36 10.0 undecidable manual PG 232 0.0028 0.19 1.4
--.AQU.Z. 1999-08-03T08:05:43.85 10.0 undecidable manual PG 129 0.0032 -0.05 1.9
--.NRCA.Z. 1999-08-03T08:05:41.87 10.0 undecidable manual PG 14 0.0023 -0.16 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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