Earthquake with magnitude of Md 2.7 on date 30-04-1999 and time 10:51:13 (Italy) in region 4 km NW Micigliano (RI)

A magnitude Md 2.7 earthquake occured in region: 4 km NW Micigliano (RI), on

  • 30-04-1999 08:51:13 (UTC)
  • 30-04-1999 10:51:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.48, 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
Micigliano RI 4 127 127
Posta RI 7 694 821
Antrodoco RI 8 2588 3409
Borgo Velino RI 9 972 4381
Borbona RI 9 617 4998
Castel Sant'Angelo RI 9 1308 6306
Cantalice RI 11 2755 9061
Leonessa RI 11 2435 11496
Poggio Bustone RI 12 2055 13551
Cittaducale RI 12 6828 20379
Rivodutri RI 15 1253 21632
Cagnano Amiterno AQ 16 1369 23001
Rieti RI 16 47698 70699
Morro Reatino RI 17 373 71072
Concerviano RI 18 291 71363
Montereale AQ 18 2581 73944
Cittareale RI 19 482 74426
Polino TR 19 233 74659
Labro RI 20 374 75033

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Terni (111501 inhabitants)
33 Km W of L'Aquila (69753 inhabitants)
59 Km W of Teramo (54892 inhabitants)
59 Km NE of Guidonia Montecelio (88673 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
60 Km NE of Tivoli (56533 inhabitants)
76 Km E of Viterbo (67173 inhabitants)
79 Km NE of Roma (2864731 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
91 Km N of Velletri (53303 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
94 Km W of Chieti (51815 inhabitants)
97 Km W of Pescara (121014 inhabitants)
100 Km NE of Pomezia (62966 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 1999-04-30
08:51:13
42.48 13.03 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 364469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-04-30 08:51:13 ± 0.134
Latitude 42.48 ± 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 364469

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) 1277.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00575
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 364469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:41:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ASS.Z. 1999-04-30T08:51:36.68 10.0 undecidable manual SG 334 0.0057 -0.45 0.2
--.ASS.Z. 1999-04-30T08:51:27.47 10.0 undecidable manual PG 334 0.0057 0.31 0.9
--.NRCA.Z. 1999-04-30T08:51:26.88 10.0 undecidable manual SG 9 0.0032 -0.56 0.2
--.AQU.Z. 1999-04-30T08:51:25.40 10.0 undecidable manual SG 114 0.0027 -0.21 0.6
--.MNS.Z. 1999-04-30T08:51:24.88 10.0 undecidable manual SG 249 0.0024 0.55 0.2
--.NRCA.Z. 1999-04-30T08:51:21.91 10.0 undecidable manual PG 9 0.0032 0.34 1.1
--.AQU.Z. 1999-04-30T08:51:20.38 10.0 undecidable manual PG 114 0.0027 0.08 1.9
--.MNS.Z. 1999-04-30T08:51:19.54 10.0 negative manual PG 249 0.0024 -0.23 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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