Earthquake with magnitude of Md 2.5 on date 01-08-1989 and time 16:33:50 (Italy) in region 7 km SE Predappio (FC)

A magnitude Md 2.5 earthquake occured in region: 7 km SE Predappio (FC), on

  • 01-08-1989 14:33:50 (UTC)
  • 01-08-1989 16:33:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.05, 12.01 at 14 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
Predappio FC 7 6346 6346
Civitella di Romagna FC 7 3786 10132
Galeata FC 9 2516 12648
Meldola FC 10 9970 22618
Dovadola FC 13 1653 24271
Rocca San Casciano FC 13 1910 26181
Santa Sofia FC 13 4136 30317
Castrocaro Terme e Terra del Sole FC 15 6426 36743
Bertinoro FC 16 11059 47802
Sarsina FC 18 3446 51248
Portico e San Benedetto FC 18 756 52004
Mercato Saraceno FC 18 6886 58890
Forlimpopoli FC 19 13290 72180
Premilcuore FC 20 799 72979
Forlì FC 20 117913 190892

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Forlì (117913 inhabitants)
22 Km W of Cesena (96758 inhabitants)
29 Km SE of Faenza (58541 inhabitants)
41 Km SE of Imola (69797 inhabitants)
44 Km SW of Ravenna (159116 inhabitants)
45 Km W of Rimini (147750 inhabitants)
65 Km N of Arezzo (99543 inhabitants)
67 Km E of Firenze (382808 inhabitants)
73 Km SE of Bologna (386663 inhabitants)
73 Km E of Scandicci (50609 inhabitants)
74 Km W of Pesaro (94582 inhabitants)
75 Km E of Prato (191150 inhabitants)
84 Km W of Fano (60888 inhabitants)
88 Km E of Pistoia (90315 inhabitants)
93 Km SE of Ferrara (133155 inhabitants)
97 Km NE of Siena (53903 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 2.5 1989-08-01
14:33:50
44.05 12.01 14 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 96559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-08-01 14:33:50 ± 0.279
Latitude 44.05 ± 0.02
Longitude 12.01 ± 0.01
Depth (km) 14 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 96559

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) 2571.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 239
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00979
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 96559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:30:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1989-08-01T14:34:19.91 10.0 undecidable manual SG 128 0.0078 -0.34 0.1
--.ASS.Z. 1989-08-01T14:34:11.00 10.0 undecidable manual PN 154 0.0098 0.02 1
--.ARV.Z. 1989-08-01T14:34:07.79 10.0 undecidable manual PG 128 0.0078 0.16 0.9
--.CRE.Z. 1989-08-01T14:34:06.50 10.0 undecidable manual SG 185 0.0038 0.41 0.1
--.PGD.Z. 1989-08-01T14:34:01.26 10.0 undecidable manual SG 230 0.0023 0.29 0.3
--.CRE.Z. 1989-08-01T14:33:59.00 10.0 undecidable manual PG 185 0.0038 -0.45 0.2
--.RSM.Z. 1989-08-01T14:33:58.00 10.0 undecidable manual PG 109 0.003 0.14 1.3
--.SFI.Z. 1989-08-01T14:33:58.26 10.0 undecidable manual SG 218 0.0016 -0.12 0.6
--.PGD.Z. 1989-08-01T14:33:56.34 10.0 positive manual PG 230 0.0023 -0.16 2.5
--.SFI.Z. 1989-08-01T14:33:54.91 10.0 positive manual PG 218 0.0016 -0.09 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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