Earthquake with magnitude of Md 2.7 on date 21-08-1998 and time 17:25:03 (Italy) in region 5 km N Petrella Salto (RI)

A magnitude Md 2.7 earthquake occured in region: 5 km N Petrella Salto (RI), on

  • 21-08-1998 15:25:03 (UTC)
  • 21-08-1998 17:25:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.34, 13.06 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
Petrella Salto RI 5 1197 1197
Concerviano RI 6 291 1488
Castel Sant'Angelo RI 6 1308 2796
Borgo Velino RI 7 972 3768
Antrodoco RI 9 2588 6356
Cittaducale RI 10 6828 13184
Fiamignano RI 10 1413 14597
Longone Sabino RI 11 597 15194
Varco Sabino RI 12 187 15381
Micigliano RI 12 127 15508
Marcetelli RI 13 89 15597
Rocca Sinibalda RI 13 815 16412
Belmonte in Sabina RI 14 636 17048
Castel di Tora RI 16 288 17336
Colle di Tora RI 17 372 17708
Scoppito AQ 17 3727 21435
Ascrea RI 17 234 21669
Pescorocchiano RI 17 2075 23744
Rieti RI 17 47698 71442
Paganico Sabino RI 18 172 71614
Torricella in Sabina RI 18 1342 72956
Collegiove RI 19 213 73169
Cantalice RI 19 2755 75924
Cagnano Amiterno AQ 19 1369 77293
Poggio San Lorenzo RI 20 589 77882
Borbona RI 20 617 78499

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of L'Aquila (69753 inhabitants)
41 Km SE of Terni (111501 inhabitants)
47 Km NE of Guidonia Montecelio (88673 inhabitants)
47 Km NE of Tivoli (56533 inhabitants)
64 Km SW of Teramo (54892 inhabitants)
69 Km NE of Roma (2864731 inhabitants)
74 Km SE of Foligno (57155 inhabitants)
76 Km NE of Velletri (53303 inhabitants)
79 Km E of Viterbo (67173 inhabitants)
88 Km NE of Pomezia (62966 inhabitants)
90 Km NE of Aprilia (73446 inhabitants)
91 Km W of Chieti (51815 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
93 Km NE of Fiumicino (78395 inhabitants)
96 Km W of Pescara (121014 inhabitants)
98 Km N of Latina (125985 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 2.7 1998-08-21
15:25:03
42.34 13.06 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 349139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-08-21 15:25:03 ± 0.263
Latitude 42.34 ± 0.02
Longitude 13.06 ± 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 349139

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) 2411.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 191
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) 0.00818
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 349139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:27:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.NRCA.Z. 1998-08-21T15:25:21.45 10.0 undecidable manual SG 5 0.0044 -0.04 0.7
--.SNTG.Z. 1998-08-21T15:25:21.48 10.0 undecidable manual PG 354 0.0082 -0.37 1
--.ASS.Z. 1998-08-21T15:25:20.50 10.0 undecidable manual PG 337 0.007 1.2 0.2
--.AQU.Z. 1998-08-21T15:25:14.41 10.0 undecidable manual SG 87 0.0023 0.5 0.5
--.MNS.Z. 1998-08-21T15:25:14.27 10.0 undecidable manual SG 278 0.0025 -0.41 0.6
--.NRCA.Z. 1998-08-21T15:25:13.44 10.0 undecidable manual PG 5 0.0044 -0.56 1.1
--.MNS.Z. 1998-08-21T15:25:10.10 10.0 undecidable manual PG 278 0.0025 0.03 1.9
--.AQU.Z. 1998-08-21T15:25:09.47 10.0 undecidable manual PG 87 0.0023 -0.16 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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