Earthquake with magnitude of Md 3.0 on date 15-04-1985 and time 00:06:25 (Italy) in region 4 km E Narni (TR)

A magnitude Md 3.0 earthquake occured in region: 4 km E Narni (TR), on

  • 14-04-1985 22:06:25 (UTC)
  • 15-04-1985 00:06:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.52, 12.56 at 2 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
Narni TR 4 19785 19785
Terni TR 9 111501 131286
Stroncone TR 9 4917 136203
San Gemini TR 11 5018 141221
Configni RI 13 633 141854
Otricoli TR 13 1869 143723
Amelia TR 13 11897 155620
Calvi dell'Umbria TR 13 1856 157476
Orte VT 16 8923 166399
Montecastrilli TR 16 5022 171421
Vacone RI 16 256 171677
Cottanello RI 16 563 172240
Penna in Teverina TR 17 1099 173339
Montebuono RI 17 883 174222
Montasola RI 18 395 174617
Colli sul Velino RI 18 533 175150
Tarano RI 18 1444 176594
Arrone TR 19 2763 179357
Avigliano Umbro TR 19 2558 181915
Greccio RI 19 1558 183473
Magliano Sabina RI 19 3774 187247
Montefranco TR 19 1276 188523
Acquasparta TR 19 4778 193301
Giove TR 19 1928 195229
Torri in Sabina RI 20 1256 196485
Labro RI 20 374 196859
Lugnano in Teverina TR 20 1494 198353

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km SW of Terni (111501 inhabitants)
39 Km E of Viterbo (67173 inhabitants)
50 Km S of Foligno (57155 inhabitants)
59 Km N of Guidonia Montecelio (88673 inhabitants)
65 Km NW of Tivoli (56533 inhabitants)
67 Km S of Perugia (166134 inhabitants)
70 Km N of Roma (2864731 inhabitants)
71 Km W of L'Aquila (69753 inhabitants)
79 Km NE of Civitavecchia (52991 inhabitants)
87 Km NE of Fiumicino (78395 inhabitants)
94 Km N of Velletri (53303 inhabitants)
95 Km N of Pomezia (62966 inhabitants)
95 Km W of Teramo (54892 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 1985-04-14
22:06:25
42.52 12.56 2 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 4669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-14 22:06:25 ± 0.224
Latitude 42.52 ± 0.01
Longitude 12.56 ± 0.01
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4669

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) 1342.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.01101
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 4669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SD1.Z. 1985-04-14T22:07:07.50 10.0 undecidable manual SN 130 0.011 0.16 0.5
--.CH1.Z. 1985-04-14T22:07:06.50 10.0 undecidable manual SN 338 0.0107 0.05 0.5
--.MA1.Z. 1985-04-14T22:07:02.00 10.0 undecidable manual SG 264 0.0093 -0.31 0.5
--.RMP.N. 1985-04-14T22:06:52.00 10.0 undecidable manual SG 171 0.0064 0.15 0.7
--.AQU.Z. 1985-04-14T22:06:49.00 10.0 undecidable manual SG 104 0.0057 -0.47 0.4
--.SD1.Z. 1985-04-14T22:06:49.00 10.0 undecidable manual PN 130 0.011 -0.62 0.6
--.CH1.Z. 1985-04-14T22:06:49.00 10.0 undecidable manual PN 338 0.0107 -0.1 1.3
--.MA1.Z. 1985-04-14T22:06:47.00 10.0 undecidable manual PG 264 0.0093 0.28 1.2
--.AR1.Z. 1985-04-14T22:06:47.00 10.0 undecidable manual PG 15 0.0091 0.77 0.4
--.AS1.Z. 1985-04-14T22:06:46.00 10.0 undecidable manual SG 7 0.0049 -0.38 0.5
--.AQU.Z. 1985-04-14T22:06:40.00 10.0 undecidable manual PG 104 0.0057 0.7 0.6
--.RMP.Z. 1985-04-14T22:06:40.50 10.0 undecidable manual PG 171 0.0064 -0.17 1.6
--.AS1.Z. 1985-04-14T22:06:37.50 10.0 undecidable manual PG 7 0.0049 -0.02 1.7
--.PO9.Z. 1985-04-14T22:06:36.50 10.0 undecidable manual SG 79 0.0025 0.06 1
--.MNS.Z. 1985-04-14T22:06:33.00 10.0 undecidable manual SG 146 0.0015 1.32 0
--.PO9.Z. 1985-04-14T22:06:31.50 10.0 positive manual PG 79 0.0025 -0.27 3
--.MNS.Z. 1985-04-14T22:06:28.60 10.0 positive manual PG 146 0.0015 -0.43 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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