Earthquake with magnitude of M 2.5 on date 05-01-1986 and time 10:35:33 (Italy) in region 1 km SE Rocchetta di Vara (SP)

A magnitude M 2.5 earthquake occured in region: 1 km SE Rocchetta di Vara (SP), on

  • 05-01-1986 09:35:33 (UTC)
  • 05-01-1986 10:35:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.24, 9.77 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
Rocchetta di Vara SP 1 703 703
Brugnato SP 3 1270 1973
Borghetto di Vara SP 4 938 2911
Zignago SP 5 532 3443
Beverino SP 5 2429 5872
Calice al Cornoviglio SP 6 1138 7010
Pignone SP 8 565 7575
Carrodano SP 9 503 8078
Sesta Godano SP 9 1377 9455
Riccò del Golfo di Spezia SP 9 3698 13153
Follo SP 12 6337 19490
Bolano SP 12 7813 27303
Zeri MS 13 1094 28397
Carro SP 13 545 28942
Vernazza SP 13 848 29790
Monterosso al Mare SP 14 1464 31254
Mulazzo MS 14 2424 33678
Vezzano Ligure SP 15 7356 41034
Podenzana MS 15 2180 43214
Levanto SP 15 5499 48713
Santo Stefano di Magra SP 15 9360 58073
Tresana MS 15 2044 60117
La Spezia SP 16 93959 154076
Villafranca in Lunigiana MS 16 4770 158846
Riomaggiore SP 16 1576 160422
Bonassola SP 16 862 161284
Aulla MS 17 11263 172547
Filattiera MS 17 2309 174856
Framura SP 17 666 175522
Pontremoli MS 18 7357 182879
Arcola SP 18 10607 193486
Deiva Marina SP 20 1392 194878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NW of La Spezia (93959 inhabitants)
32 Km NW of Carrara (63133 inhabitants)
38 Km NW of Massa (69479 inhabitants)
57 Km NW of Viareggio (62467 inhabitants)
69 Km E of Genova (586655 inhabitants)
73 Km NW of Lucca (89046 inhabitants)
77 Km SW of Parma (192836 inhabitants)
77 Km NW of Pisa (89158 inhabitants)
85 Km SW of Reggio nell'Emilia (171345 inhabitants)
88 Km NW of Livorno (159219 inhabitants)
91 Km S of Piacenza (102191 inhabitants)
98 Km W of Pistoia (90315 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
M 2.5 1986-01-05
09:35:33
44.24 9.77 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 19469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-01-05 09:35:33 ± 0.682
Latitude 44.24 ± 0.04
Longitude 9.77 ± 0.06
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 19469

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) 6501.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 248
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.0021
Epicentral distance of station farthest from the epicenter (degree) 0.01238
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 19469
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
--.IMP.Z. 1986-01-05T09:36:18.20 10.0 undecidable manual SN 257 0.0124 1.05 0.1
--.ROB.Z. 1986-01-05T09:36:16.30 10.0 undecidable manual SN 273 0.0121 -0.21 0.6
--.IMP.Z. 1986-01-05T09:35:59.20 10.0 undecidable manual PN 257 0.0124 0.38 1.2
--.ROB.Z. 1986-01-05T09:35:58.20 10.0 undecidable manual PN 273 0.0121 -0.25 1.5
--.FIN.Z. 1986-01-05T09:35:54.50 10.0 undecidable manual PN 268 0.01 -0.65 0.7
--.BVT.Z. 1986-01-05T09:35:43.30 10.0 undecidable manual SG 8 0.0021 0.05 0.8
--.BVT.Z. 1986-01-05T09:35:39.40 10.0 undecidable manual PG 8 0.0021 0.16 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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