Earthquake with magnitude of Md 2.5 on date 13-05-1986 and time 17:44:30 (UTC) in region 5 km E Santo Stefano d'Aveto (GE)

A magnitude Md 2.5 earthquake occured in region: 5 km E Santo Stefano d'Aveto (GE), on

  • 13-05-1986 17:44:30 (UTC)
  • 13-05-1986 19:44:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5580, 9.5140 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
Santo Stefano d'Aveto GE 5 1126 1126
Ferriere PC 10 1294 2420
Rezzoaglio GE 11 995 3415
Bedonia PR 11 3482 6897
Tornolo PR 12 1010 7907
Compiano PR 14 1112 9019
Ottone PC 16 516 9535
Fontanigorda GE 17 277 9812
Farini PC 18 1290 11102
Borzonasca GE 18 2049 13151
Gorreto GE 18 97 13248
Cerignale PC 19 127 13375
Rovegno GE 19 554 13929
Albareto PR 19 2156 16085
Bardi PR 19 2227 18312

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km E of Genova (586655 inhabitants)
56 Km NW of La Spezia (93959 inhabitants)
57 Km S of Piacenza (102191 inhabitants)
70 Km W of Parma (192836 inhabitants)
71 Km NW of Carrara (63133 inhabitants)
75 Km SE of Pavia (72576 inhabitants)
76 Km SW of Cremona (71901 inhabitants)
77 Km NW of Massa (69479 inhabitants)
81 Km E of Alessandria (93943 inhabitants)
87 Km E of Savona (61345 inhabitants)
90 Km W of Reggio nell'Emilia (171345 inhabitants)
97 Km NW of Viareggio (62467 inhabitants)
99 Km SE of Vigevano (63310 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 2.5
M 2.6
1986-05-13
17:44:30
44.558 9.514 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 27359
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-05-13 17:44:30 ± 0.918
Latitude 44.5580 ± 0.0450
Longitude 9.5140 ± 0.0958
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 27359

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) 9091.1
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 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.00300
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 27359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:28:56

M:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 27359
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(km) Takeoff_angle Residual Weight
--.VEA.Z. 1986-05-13T17:44:44.50 10.0 undecidable manual SG 12 0.333 0.88 0.2
--.CO9.Z. 1986-05-13T17:44:39.00 10.0 undecidable manual SG 347 0.2109 -0.6 0.7
--.VEA.Z. 1986-05-13T17:44:37.60 10.0 undecidable manual PG 12 0.333 -0.61 1
--.BVT.Z. 1986-05-13T17:44:36.20 10.0 undecidable manual PG 111 0.222 -0.01 2
--.CO9.Z. 1986-05-13T17:44:36.50 10.0 undecidable manual PG 347 0.2109 0.61 1.1
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