Earthquake with magnitude of Md 2.4 on date 12-04-1987 and time 19:05:53 (Italy) in region 4 km W Castrocaro Terme e Terra del Sole (FC)

A magnitude Md 2.4 earthquake occured in region: 4 km W Castrocaro Terme e Terra del Sole (FC), on

  • 12-04-1987 17:05:53 (UTC)
  • 12-04-1987 19:05:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.163, 11.905 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
Castrocaro Terme e Terra del Sole FC 4 6426 6426
Dovadola FC 5 1653 8079
Modigliana FC 9 4560 12639
Predappio FC 9 6346 18985
Rocca San Casciano FC 12 1910 20895
Brisighella RA 13 7639 28534
Forlì FC 13 117913 146447
Meldola FC 13 9970 156417
Faenza RA 14 58541 214958
Tredozio FC 16 1212 216170
Civitella di Romagna FC 18 3786 219956
Forlimpopoli FC 18 13290 233246
Portico e San Benedetto FC 18 756 234002
Bertinoro FC 18 11059 245061
Galeata FC 18 2516 247577
Riolo Terme RA 19 5720 253297
Castel Bolognese RA 19 9554 262851

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Forlì (117913 inhabitants)
14 Km S of Faenza (58541 inhabitants)
26 Km SE of Imola (69797 inhabitants)
27 Km W of Cesena (96758 inhabitants)
37 Km SW of Ravenna (159116 inhabitants)
54 Km W of Rimini (147750 inhabitants)
58 Km SE of Bologna (386663 inhabitants)
68 Km NE of Firenze (382808 inhabitants)
72 Km E of Prato (191150 inhabitants)
73 Km NE of Scandicci (50609 inhabitants)
77 Km N of Arezzo (99543 inhabitants)
78 Km SE of Ferrara (133155 inhabitants)
83 Km E of Pistoia (90315 inhabitants)
85 Km W of Pesaro (94582 inhabitants)
95 Km SE of Modena (184973 inhabitants)
96 Km W of Fano (60888 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 2.4 1987-04-12
17:05:53
44.163 11.905 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 44729
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-04-12 17:05:53 ± 0.334
Latitude 44.1630 ± 0.0203
Longitude 11.9050 ± 0.0378
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 44729

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) 3762.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
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) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.02299
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 44729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:44:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RBL.Z. 1987-04-12T17:06:36.00 10.0 undecidable manual PN 26 0.023 0.71 0.9
--.FOI.Z. 1987-04-12T17:06:35.00 10.0 undecidable manual PN 13 0.0225 0.44 1.1
--.ARV.Z. 1987-04-12T17:06:30.00 10.0 undecidable manual SG 131 0.009 1.69 0.1
--.CTI.Z. 1987-04-12T17:06:25.00 10.0 undecidable manual PN 354 0.017 -1.13 0.6
--.ARV.Z. 1987-04-12T17:06:13.00 10.0 undecidable manual PG 131 0.009 -0.52 1.7
--.BDI.Z. 1987-04-12T17:06:13.00 10.0 undecidable manual PG 264 0.0084 0.54 1.6
--.CRE.Z. 1987-04-12T17:06:12.80 10.0 undecidable manual SG 176 0.0049 -0.84 0.5
--.PGD.Z. 1987-04-12T17:06:07.00 10.0 undecidable manual SG 204 0.0028 1.38 0.2
--.CRE.Z. 1987-04-12T17:06:04.50 10.0 undecidable manual PG 176 0.0049 -0.55 1.6
--.PGD.Z. 1987-04-12T17:06:00.00 10.0 undecidable manual PG 204 0.0028 -0.42 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download