INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of M 2.4 on date 30-06-1986 and time 16:09:56 (UTC) in region E Molini di Triora (IM)

A magnitude M 2.4 earthquake occured in region: E Molini di Triora (IM), on

  • 30-06-1986 16:09:56 (UTC)
  • 30-06-1986 18:09:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.99, 7.78 at 1 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
Molini di Triora IM 1 617 617
Triora IM 1 355 972
Carpasio IM 8 168 1140
Rezzo IM 8 366 1506
Montegrosso Pian Latte IM 9 118 1624
Montalto Ligure IM 9 377 2001
Mendatica IM 10 185 2186
Badalucco IM 10 1136 3322
Cosio d'Arroscia IM 10 221 3543
Briga Alta CN 10 39 3582
Bajardo IM 11 312 3894
Castel Vittorio IM 11 287 4181
Pornassio IM 11 685 4866
Pigna IM 11 859 5725
Aurigo IM 12 347 6072
Pieve di Teco IM 12 1338 7410
Ceriana IM 12 1250 8660
Borgomaro IM 13 865 9525
Caravonica IM 14 282 9807
Prelà IM 15 503 10310
Lucinasco IM 15 272 10582
Pietrabruna IM 15 501 11083
Armo IM 15 111 11194
Vasia IM 15 389 11583
Apricale IM 16 629 12212
Cesio IM 16 283 12495
Castellaro IM 16 1256 13751
Vessalico IM 16 282 14033
Perinaldo IM 16 870 14903
Chiusavecchia IM 17 577 15480
Dolcedo IM 17 1415 16895
Isolabona IM 17 679 17574
Chiusanico IM 17 607 18181
Taggia IM 17 14116 32297
Borghetto d'Arroscia IM 18 456 32753
Pompeiana IM 18 823 33576
Terzorio IM 18 216 33792
Rocchetta Nervina IM 18 298 34090
Civezza IM 19 609 34699
Riva Ligure IM 19 2910 37609
Sanremo IM 19 54807 92416
Pontedassio IM 20 2323 94739
Caprauna CN 20 104 94843
Santo Stefano al Mare IM 20 2197 97040
Seborga IM 20 315 97355
Cipressa IM 20 1290 98645
Costarainera IM 20 828 99473

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km N of Sanremo (54807 inhabitants)
48 Km SE of Cuneo (56081 inhabitants)
66 Km SW of Savona (61345 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 M 2.4 1986-06-30
16:09:56
43.99 7.78 1 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 30459
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-06-30 16:09:56 ± 0.665
Latitude 43.99 ± 0.02
Longitude 7.78 ± 0.02
Depth (km) 1 ± 73 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 30459

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) 2661.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00372
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

M:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 30459
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.STV.Z. 1986-06-30T16:10:11.80 10.0 undecidable manual SG 308 0.0037 -0.68 0.3
--.FIN.Z. 1986-06-30T16:10:09.90 10.0 undecidable manual SG 54 0.0033 -1.07 0.1
--.ROB.Z. 1986-06-30T16:10:08.60 10.0 undecidable manual SG 12 0.0028 -0.1 0.8
--.FIN.Z. 1986-06-30T16:10:05.60 10.0 undecidable manual PG 54 0.0033 0.73 0.7
--.STV.Z. 1986-06-30T16:10:05.80 10.0 undecidable manual PG 308 0.0037 0.05 1.8
--.ROB.Z. 1986-06-30T16:10:04.00 10.0 undecidable manual PG 12 0.0028 0.44 1.5
--.IMP.Z. 1986-06-30T16:10:00.40 10.0 undecidable manual SG 133 0.001 -0.43 0.6
--.IMP.Z. 1986-06-30T16:09:58.90 10.0 undecidable manual PG 133 0.001 -0.12 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download