Earthquake with magnitude of Md 2.6 on date 02-05-1999 and time 17:31:53 (Italy) in region 2 km W Cittareale (RI)

A magnitude Md 2.6 earthquake occured in region: 2 km W Cittareale (RI), on

  • 02-05-1999 15:31:53 (UTC)
  • 02-05-1999 17:31:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.63, 13.13 at 8 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 2 482 482
Posta RI 12 694 1176
Accumoli RI 12 667 1843
Borbona RI 13 617 2460
Amatrice RI 13 2657 5117
Cascia PG 14 3217 8334
Montereale AQ 15 2581 10915
Monteleone di Spoleto PG 15 599 11514
Leonessa RI 16 2435 13949
Capitignano AQ 18 665 14614
Poggiodomo PG 19 117 14731
Norcia PG 19 4957 19688
Cagnano Amiterno AQ 20 1369 21057

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of L'Aquila (69753 inhabitants)
41 Km E of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
77 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
90 Km W of Chieti (51815 inhabitants)
90 Km W of Pescara (121014 inhabitants)
98 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
Rev 1000 Md 2.6
ML-VAX 1.7
1999-05-02
15:31:53
42.63 13.13 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 364759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-05-02 15:31:53 ± 0.242
Latitude 42.63 ± 0.01
Longitude 13.13 ± 0.02
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 364759

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) 2050
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 148
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.00979
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 364759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:42:08

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 364759
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
--.FB9.Z. 1999-05-02T15:32:30.93 10.0 undecidable manual SN 346 0.0098 0.29 0.5
--.SDI.Z. 1999-05-02T15:32:29.78 10.0 undecidable manual SG 151 0.0094 0.41 0.5
--.SNTG.Z. 1999-05-02T15:32:16.95 10.0 undecidable manual SG 347 0.0057 0.44 0.6
--.SDI.Z. 1999-05-02T15:32:15.58 10.0 undecidable manual PG 151 0.0094 1.35 0.2
--.FB9.Z. 1999-05-02T15:32:14.10 10.0 undecidable manual PN 346 0.0098 -0.95 0.4
--.ASS.Z. 1999-05-02T15:32:14.36 10.0 undecidable manual SG 321 0.005 0.51 0.5
--.MNS.Z. 1999-05-02T15:32:08.88 10.0 undecidable manual SG 234 0.0036 -0.21 0.7
--.AQU.Z. 1999-05-02T15:32:06.22 10.0 undecidable manual SG 144 0.003 -0.42 0.6
--.SNTG.Z. 1999-05-02T15:32:06.16 10.0 undecidable manual PG 347 0.0057 -0.64 1.1
--.ASS.Z. 1999-05-02T15:32:05.30 10.0 undecidable manual PG 321 0.005 0.04 1.9
--.MNS.Z. 1999-05-02T15:32:02.65 10.0 undecidable manual PG 234 0.0036 0.13 1.9
--.NRCA.Z. 1999-05-02T15:32:02.14 10.0 undecidable manual SG 355 0.0019 0.16 0.7
--.AQU.Z. 1999-05-02T15:32:00.36 10.0 undecidable manual PG 144 0.003 -0.75 0.9
--.NRCA.Z. 1999-05-02T15:31:58.71 10.0 positive manual PG 355 0.0019 0.3 3.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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