Earthquake with magnitude of Md 2.3 on date 24-11-1985 and time 02:03:03 (UTC) in region 3 km NW Tornolo (PR)

A magnitude Md 2.3 earthquake occured in region: 3 km NW Tornolo (PR), on

  • 24-11-1985 02:03:03 (UTC)
  • 24-11-1985 03:03:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5, 9.59 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
Tornolo PR 3 1010 1010
Bedonia PR 4 3482 4492
Compiano PR 6 1112 5604
Albareto PR 11 2156 7760
Santo Stefano d'Aveto GE 12 1126 8886
Varese Ligure SP 14 2059 10945
Borgo Val di Taro PR 14 6999 17944
Rezzoaglio GE 16 995 18939
Ferriere PC 18 1294 20233
Borzonasca GE 18 2049 22282
Maissana SP 19 616 22898
Bardi PR 19 2227 25125

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NW of La Spezia (93959 inhabitants)
53 Km E of Genova (586655 inhabitants)
62 Km S of Piacenza (102191 inhabitants)
62 Km NW of Carrara (63133 inhabitants)
68 Km W of Parma (192836 inhabitants)
68 Km NW of Massa (69479 inhabitants)
78 Km SW of Cremona (71901 inhabitants)
83 Km SE of Pavia (72576 inhabitants)
85 Km W of Reggio nell'Emilia (171345 inhabitants)
88 Km NW of Viareggio (62467 inhabitants)
90 Km SE of Alessandria (93943 inhabitants)
91 Km E 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 Md 2.3 1985-11-24
02:03:03
44.5 9.59 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 16529
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-11-24 02:03:03 ± 0.248
Latitude 44.50 ± 0.02
Longitude 9.59 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 16529

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) 2893.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.01158
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 16529
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:19:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SAL.Z. 1985-11-24T02:03:46.00 10.0 undecidable manual SN 30 0.0116 -0.16 0.6
--.ROB.Z. 1985-11-24T02:03:45.80 10.0 undecidable manual SN 261 0.0112 0.76 0.5
--.FIN.Z. 1985-11-24T02:03:39.40 10.0 undecidable manual SG 253 0.0092 -0.18 0.7
--.BDI.Z. 1985-11-24T02:03:33.50 10.0 undecidable manual SG 120 0.0075 -0.15 0.8
--.SAL.Z. 1985-11-24T02:03:28.00 10.0 undecidable manual PN 30 0.0116 -0.21 1.6
--.ROB.Z. 1985-11-24T02:03:27.30 10.0 undecidable manual PN 261 0.0112 -0.26 1.5
--.FIN.Z. 1985-11-24T02:03:24.10 10.0 undecidable manual PG 253 0.0092 -0.31 1.6
--.BDI.Z. 1985-11-24T02:03:21.00 10.0 undecidable manual PG 120 0.0075 0.01 2
--.VEA.Z. 1985-11-24T02:03:17.10 10.0 undecidable manual SG 3 0.0035 -1.64 0.1
--.VEA.Z. 1985-11-24T02:03:13.90 10.0 undecidable manual PG 3 0.0035 1.52 0.3
--.CO9.Z. 1985-11-24T02:03:08.50 10.0 undecidable manual PG 339 0.0025 -1.57 0
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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