Earthquake with magnitude of Md 2.5 on date 24-08-2002 and time 08:25:11 (Italy) in region NW Castel Sant'Angelo (RI)

A magnitude Md 2.5 earthquake occured in region: NW Castel Sant'Angelo (RI), on

  • 24-08-2002 06:25:11 (UTC)
  • 24-08-2002 08:25:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4, 13.03 at 5 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
Castel Sant'Angelo RI 0 1308 1308
Borgo Velino RI 3 972 2280
Antrodoco RI 5 2588 4868
Micigliano RI 6 127 4995
Cittaducale RI 7 6828 11823
Concerviano RI 9 291 12114
Petrella Salto RI 12 1197 13311
Cantalice RI 13 2755 16066
Rieti RI 14 47698 63764
Belmonte in Sabina RI 14 636 64400
Longone Sabino RI 15 597 64997
Posta RI 15 694 65691
Borbona RI 15 617 66308
Rocca Sinibalda RI 16 815 67123
Poggio Bustone RI 16 2055 69178
Fiamignano RI 17 1413 70591
Cagnano Amiterno AQ 18 1369 71960
Varco Sabino RI 18 187 72147
Leonessa RI 19 2435 74582
Scoppito AQ 19 3727 78309
Marcetelli RI 19 89 78398
Rivodutri RI 19 1253 79651

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km W of L'Aquila (69753 inhabitants)
36 Km SE of Terni (111501 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
52 Km NE of Tivoli (56533 inhabitants)
63 Km W of Teramo (54892 inhabitants)
67 Km SE of Foligno (57155 inhabitants)
72 Km NE of Roma (2864731 inhabitants)
76 Km E of Viterbo (67173 inhabitants)
82 Km N of Velletri (53303 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
94 Km W of Chieti (51815 inhabitants)
95 Km SE of Perugia (166134 inhabitants)
95 Km NE of Aprilia (73446 inhabitants)
95 Km NE of Fiumicino (78395 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 2.5
ML-VAX 1.5
2002-08-24
06:25:11
42.4 13.03 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 447409
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-08-24 06:25:11 ± 0.195
Latitude 42.40 ± 0.01
Longitude 13.03 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 447409

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) 1836.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.00639
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 447409
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:03:20

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 447409
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
--.ASS.Z. 2002-08-24T06:25:37.69 10.0 undecidable manual SG 337 0.0064 0.54 0.2
--.NRCA.Z. 2002-08-24T06:25:27.92 10.0 undecidable manual SG 7 0.0039 -0.24 0.5
--.ASS.Z. 2002-08-24T06:25:25.76 10.0 undecidable manual PG 337 0.0064 -0.42 0.8
--.MNS.Z. 2002-08-24T06:25:21.46 10.0 undecidable manual SG 266 0.0023 0.19 0.6
--.PTQR.Z. 2002-08-24T06:25:20.59 10.0 undecidable manual PG 143 0.0041 -0.91 0.3
--.NRCA.Z. 2002-08-24T06:25:20.65 10.0 undecidable manual PG 7 0.0039 -0.34 1.2
--.AQU.Z. 2002-08-24T06:25:18.10 10.0 negative manual PG 98 0.0025 0.53 1.7
--.MNS.Z. 2002-08-24T06:25:17.21 10.0 positive manual PG 266 0.0023 0.2 2.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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