Earthquake with magnitude of Md 2.9 on date 22-06-1986 and time 06:35:11 (Italy) in region 3 km W Galeata (FC)

A magnitude Md 2.9 earthquake occured in region: 3 km W Galeata (FC), on

  • 22-06-1986 04:35:11 (UTC)
  • 22-06-1986 06:35:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.996, 11.88 at 12 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
Galeata FC 3 2516 2516
Civitella di Romagna FC 5 3786 6302
Santa Sofia FC 6 4136 10438
Rocca San Casciano FC 8 1910 12348
Premilcuore FC 9 799 13147
Portico e San Benedetto FC 9 756 13903
Dovadola FC 14 1653 15556
Tredozio FC 14 1212 16768
Predappio FC 14 6346 23114
Bagno di Romagna FC 17 6026 29140
Modigliana FC 19 4560 33700

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SW of Forlì (117913 inhabitants)
32 Km S of Faenza (58541 inhabitants)
33 Km W of Cesena (96758 inhabitants)
42 Km SE of Imola (69797 inhabitants)
53 Km SW of Ravenna (159116 inhabitants)
55 Km W of Rimini (147750 inhabitants)
56 Km E of Firenze (382808 inhabitants)
59 Km N of Arezzo (99543 inhabitants)
62 Km E of Scandicci (50609 inhabitants)
64 Km E of Prato (191150 inhabitants)
70 Km SE of Bologna (386663 inhabitants)
77 Km E of Pistoia (90315 inhabitants)
83 Km W of Pesaro (94582 inhabitants)
87 Km NE of Siena (53903 inhabitants)
93 Km W of Fano (60888 inhabitants)
96 Km S of Ferrara (133155 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 2.9 1986-06-22
04:35:11
43.996 11.88 12 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 29959
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-06-22 04:35:11 ± 0.475
Latitude 43.9960 ± 0.0315
Longitude 11.8800 ± 0.0337
Depth (km) 12 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 29959

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) 4422.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00648
Epicentral distance of station farthest from the epicenter (degree) 0.02445
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 29959
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:31:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1986-06-22T04:36:10.80 10.0 undecidable manual SN 356 0.0185 0.16 0.6
--.RBL.Z. 1986-06-22T04:35:55.00 10.0 undecidable manual PN 26 0.0244 0.23 1.4
--.FO1.Z. 1986-06-22T04:35:54.00 10.0 undecidable manual PN 14 0.024 -0.15 1.3
--.CTI.Z. 1986-06-22T04:35:45.50 10.0 undecidable manual PN 356 0.0185 -0.21 1.4
--.BDI.Z. 1986-06-22T04:35:44.50 10.0 undecidable manual SG 275 0.0083 1.24 0.5
--.ARV.Z. 1986-06-22T04:35:43.50 10.0 undecidable manual SG 123 0.0082 0.56 0.7
--.MNS.Z. 1986-06-22T04:35:41.00 10.0 undecidable manual PN 160 0.0154 0.02 1.6
--.BDI.Z. 1986-06-22T04:35:29.50 10.0 undecidable manual PG 275 0.0083 -0.4 1.7
--.ARV.Z. 1986-06-22T04:35:28.50 10.0 undecidable manual PG 123 0.0082 -1.21 0.6
--.PRO.Z. 1986-06-22T04:35:28.30 10.0 undecidable manual PG 96 0.0065 2.07 0.2
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