Earthquake with magnitude of Md 2.4 on date 09-05-1986 and time 02:42:06 (Italy) in region 6 km SW Cittareale (RI)

A magnitude Md 2.4 earthquake occured in region: 6 km SW Cittareale (RI), on

  • 09-05-1986 00:42:06 (UTC)
  • 09-05-1986 02:42:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.57, 13.13 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
Cittareale RI 6 482 482
Posta RI 6 694 1176
Borbona RI 6 617 1793
Montereale AQ 11 2581 4374
Leonessa RI 14 2435 6809
Amatrice RI 14 2657 9466
Cagnano Amiterno AQ 14 1369 10835
Micigliano RI 15 127 10962
Capitignano AQ 15 665 11627
Accumoli RI 17 667 12294
Monteleone di Spoleto PG 17 599 12893
Antrodoco RI 18 2588 15481
Barete AQ 18 737 16218
Cascia PG 19 3217 19435
Borgo Velino RI 19 972 20407
Campotosto AQ 19 542 20949
Pizzoli AQ 20 4326 25275

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
40 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
73 Km NE of Tivoli (56533 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
88 Km W of Chieti (51815 inhabitants)
89 Km W of Pescara (121014 inhabitants)
92 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 2.4 1986-05-09
00:42:06
42.57 13.13 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 26999
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-05-09 00:42:06 ± 0.186
Latitude 42.57 ± 0.01
Longitude 13.13 ± 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 26999

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) 1786.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00542
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 26999
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:28:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ASS.Z. 1986-05-09T00:42:28.00 10.0 undecidable manual SG 324 0.0054 0.65 0.1
--.MNS.Z. 1986-05-09T00:42:20.50 10.0 undecidable manual SG 241 0.0034 0.28 0.5
--.ASS.Z. 1986-05-09T00:42:18.00 10.0 undecidable manual PG 324 0.0054 -0.33 0.9
--.AQU.Z. 1986-05-09T00:42:17.50 10.0 undecidable manual SG 137 0.0026 0.14 0.8
--.MNS.Z. 1986-05-09T00:42:14.00 10.0 undecidable manual PG 241 0.0034 -0.22 1.6
--.AQU.Z. 1986-05-09T00:42:12.50 10.0 undecidable manual PG 137 0.0026 -0.07 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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