Earthquake with magnitude of Md 3.0 on date 06-04-1985 and time 19:15:26 (UTC) in region 5 km W Greccio (RI)

A magnitude Md 3.0 earthquake occured in region: 5 km W Greccio (RI), on

  • 06-04-1985 19:15:26 (UTC)
  • 06-04-1985 21:15:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.47, 12.72 at 9 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
Greccio RI 5 1558 1558
Stroncone TR 5 4917 6475
Colli sul Velino RI 6 533 7008
Cottanello RI 8 563 7571
Configni RI 8 633 8204
Contigliano RI 8 3783 11987
Labro RI 9 374 12361
Montasola RI 10 395 12756
Terni TR 11 111501 124257
Morro Reatino RI 11 373 124630
Vacone RI 12 256 124886
Rivodutri RI 13 1253 126139
Arrone TR 13 2763 128902
Rieti RI 14 47698 176600
Calvi dell'Umbria TR 14 1856 178456
Poggio Bustone RI 15 2055 180511
Montefranco TR 15 1276 181787
Torri in Sabina RI 15 1256 183043
Montebuono RI 15 883 183926
Casperia RI 15 1246 185172
Cantalice RI 16 2755 187927
Tarano RI 16 1444 189371
Polino TR 16 233 189604
Monte San Giovanni in Sabina RI 17 714 190318
Roccantica RI 17 563 190881
Narni TR 17 19785 210666
Ferentillo TR 18 1913 212579
Selci RI 19 1106 213685
Cantalupo in Sabina RI 19 1685 215370
Poggio Catino RI 20 1341 216711

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km SE of Terni (111501 inhabitants)
50 Km E of Viterbo (67173 inhabitants)
53 Km N of Guidonia Montecelio (88673 inhabitants)
54 Km S of Foligno (57155 inhabitants)
57 Km N of Tivoli (56533 inhabitants)
58 Km W of L'Aquila (69753 inhabitants)
67 Km N of Roma (2864731 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
84 Km W of Teramo (54892 inhabitants)
87 Km E of Civitavecchia (52991 inhabitants)
87 Km NE of Fiumicino (78395 inhabitants)
88 Km N of Velletri (53303 inhabitants)
91 Km N of Pomezia (62966 inhabitants)
98 Km N of Aprilia (73446 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 3.0 1985-04-06
19:15:26
42.47 12.72 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 4179
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-06 19:15:26 ± 0.235
Latitude 42.47 ± 0.01
Longitude 12.72 ± 0.02
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4179

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) 2394.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.03286
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 8
Type of magnitude Md
Reference to an origin 4179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-04-06T19:16:23.50 10.0 undecidable manual PN 348 0.0329 0.66 0.4
--.SD1.Z. 1985-04-06T19:16:04.50 10.0 undecidable manual SN 132 0.01 0.71 0.3
--.AR1.Z. 1985-04-06T19:16:01.00 10.0 undecidable manual SG 9 0.0093 -0.92 0.4
--.RDP.Z. 1985-04-06T19:15:52.50 10.0 undecidable manual SG 179 0.0064 0.96 0.4
--.PRG.Z. 1985-04-06T19:15:50.00 10.0 undecidable manual SG 339 0.006 -0.09 0.7
--.CH1.Z. 1985-04-06T19:15:49.50 10.0 undecidable manual PN 334 0.0115 -0.8 0.6
--.AS1.Z. 1985-04-06T19:15:49.00 10.0 undecidable manual SG 355 0.0053 1.45 0.2
--.MA1.Z. 1985-04-06T19:15:48.00 10.0 undecidable manual PN 267 0.0104 -0.52 0.9
--.SD1.Z. 1985-04-06T19:15:48.00 10.0 undecidable manual PN 132 0.01 -0.01 1.1
--.AR1.Z. 1985-04-06T19:15:45.50 10.0 undecidable manual PG 9 0.0093 -1.43 0.3
--.PRG.Z. 1985-04-06T19:15:42.00 10.0 undecidable manual PG 339 0.006 1.9 0.2
--.ALP.Z. 1985-04-06T19:15:40.30 10.0 undecidable manual PG 63 0.0062 -0.33 2.3
--.RDP.Z. 1985-04-06T19:15:40.50 10.0 positive manual PG 179 0.0064 -0.44 2.2
--.RMP.Z. 1985-04-06T19:15:40.50 10.0 undecidable manual PG 180 0.0059 0.54 2.1
--.AS1.Z. 1985-04-06T19:15:37.50 10.0 undecidable manual PG 355 0.0053 -1.13 1
--.AQU.Z. 1985-04-06T19:15:37.00 10.0 undecidable manual PG 102 0.0046 -0.34 1.2
--.PO9.Z. 1985-04-06T19:15:35.30 10.0 undecidable manual SG 58 0.0017 0.74 0.5
--.PO9.Z. 1985-04-06T19:15:31.50 10.0 positive manual PG 58 0.0017 0.38 2.3
--.MNS.Z. 1985-04-06T19:15:31.00 10.0 undecidable manual SG 195 0.0008 -0.1 0.7
--.MNS.Z. 1985-04-06T19:15:28.80 10.0 positive manual PG 195 0.0008 -0.34 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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