Earthquake with magnitude of Md 2.4 on date 19-04-1986 and time 18:46:19 (UTC) in region 2 km W Vallerotonda (FR)

A magnitude Md 2.4 earthquake occured in region: 2 km W Vallerotonda (FR), on

  • 19-04-1986 18:46:19 (UTC)
  • 19-04-1986 20:46:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5610, 13.8900 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
Vallerotonda FR 2 1581 1581
Sant'Elia Fiumerapido FR 3 6166 7747
Acquafondata FR 6 263 8010
Belmonte Castello FR 7 739 8749
San Biagio Saracinisco FR 7 349 9098
Villa Latina FR 7 1241 10339
Viticuso FR 8 353 10692
Cervaro FR 9 8109 18801
Cassino FR 9 36142 54943
Terelle FR 9 422 55365
Picinisco FR 10 1218 56583
Atina FR 10 4316 60899
San Vittore del Lazio FR 11 2636 63535
Villa Santa Lucia FR 11 2632 66167
Conca Casale IS 12 200 66367
Settefrati FR 13 728 67095
Gallinaro FR 13 1269 68364
Piedimonte San Germano FR 14 6535 74899
San Pietro Infine CE 14 944 75843
Filignano IS 14 648 76491
Casalattico FR 15 574 77065
Venafro IS 15 11280 88345
Scapoli IS 15 680 89025
Pozzilli IS 15 2380 91405
Pignataro Interamna FR 16 2595 94000
Colle San Magno FR 16 699 94699
Castrocielo FR 16 3965 98664
Casalvieri FR 17 2698 101362
Pizzone IS 17 329 101691
Aquino FR 17 5370 107061
San Donato Val di Comino FR 18 2107 109168
Rocchetta a Volturno IS 18 1113 110281
Castel San Vincenzo IS 18 516 110797
Sant'Apollinare FR 18 1919 112716
Roccasecca FR 18 7365 120081
Rocca d'Evandro CE 18 3283 123364
Colli a Volturno IS 18 1349 124713
Alvito FR 19 2713 127426
Montaquila IS 19 2456 129882
Mignano Monte Lungo CE 19 3250 133132
Sant'Ambrogio sul Garigliano FR 19 966 134098
San Giorgio a Liri FR 20 3164 137262

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km NW of Caserta (76326 inhabitants)
70 Km NW of Aversa (53047 inhabitants)
75 Km NW of Giugliano in Campania (122974 inhabitants)
78 Km NW of Marano di Napoli (59874 inhabitants)
79 Km NW of Afragola (65057 inhabitants)
79 Km NW of Acerra (59573 inhabitants)
80 Km NW of Casoria (77642 inhabitants)
81 Km N of Pozzuoli (81661 inhabitants)
83 Km E of Latina (125985 inhabitants)
86 Km NW of Napoli (974074 inhabitants)
89 Km NW of Benevento (60091 inhabitants)
91 Km NW of Portici (55274 inhabitants)
91 Km S of Chieti (51815 inhabitants)
92 Km NW of Ercolano (53709 inhabitants)
94 Km E of Velletri (53303 inhabitants)
95 Km NW of Torre del Greco (86275 inhabitants)
97 Km SE of L'Aquila (69753 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
Bulletin
Rev1000
Md 2.4 1986-04-19
18:46:19
41.561 13.89 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 25809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-04-19 18:46:19 ± 0.357
Latitude 41.5610 ± 0.0199
Longitude 13.8900 ± 0.0198
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 25809

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) 2764.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 236
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) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.01093
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 25809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:27:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.AQU.Z. 1986-04-19T18:46:50.00 10.0 undecidable manual SG 335 0.8658 -0.12 0.6
--.MNS.Z. 1986-04-19T18:46:43.00 10.0 undecidable manual PN 312 1.2099 0.17 1.1
--.AQU.Z. 1986-04-19T18:46:37.00 10.0 undecidable manual PG 335 0.8658 -0.06 1.6
--.DUI.Z. 1986-04-19T18:46:29.00 10.0 undecidable manual PG 76 0.4329 0.03 2
--.SD1.Z. 1986-04-19T18:46:26.00 10.0 undecidable manual SG 338 0.1554 0.4 0.2
--.SD1.Z. 1986-04-19T18:46:22.50 10.0 undecidable manual PG 338 0.1554 -0.41 0.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download