Earthquake with magnitude of Md 2.7 on date 24-08-1989 and time 13:56:20 (Italy) in region 6 km W Castrocaro Terme e Terra del Sole (FC)

A magnitude Md 2.7 earthquake occured in region: 6 km W Castrocaro Terme e Terra del Sole (FC), on

  • 24-08-1989 11:56:20 (UTC)
  • 24-08-1989 13:56:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.18, 11.87 at 8 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 6 6426 6426
Dovadola FC 7 1653 8079
Modigliana FC 7 4560 12639
Brisighella RA 9 7639 20278
Faenza RA 12 58541 78819
Predappio FC 12 6346 85165
Rocca San Casciano FC 13 1910 87075
Forlì FC 14 117913 204988
Tredozio FC 15 1212 206200
Riolo Terme RA 16 5720 211920
Meldola FC 16 9970 221890
Castel Bolognese RA 17 9554 231444
Portico e San Benedetto FC 19 756 232200
Civitella di Romagna FC 20 3786 235986

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km S of Faenza (58541 inhabitants)
14 Km W of Forlì (117913 inhabitants)
23 Km SE of Imola (69797 inhabitants)
30 Km W of Cesena (96758 inhabitants)
37 Km SW of Ravenna (159116 inhabitants)
55 Km SE of Bologna (386663 inhabitants)
57 Km W of Rimini (147750 inhabitants)
67 Km NE of Firenze (382808 inhabitants)
70 Km E of Prato (191150 inhabitants)
72 Km NE of Scandicci (50609 inhabitants)
76 Km S of Ferrara (133155 inhabitants)
79 Km N of Arezzo (99543 inhabitants)
81 Km E of Pistoia (90315 inhabitants)
89 Km W of Pesaro (94582 inhabitants)
91 Km SE of Modena (184973 inhabitants)
99 Km W of Fano (60888 inhabitants)
99 Km S of Rovigo (51867 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 2.7
ML-VAX 2.4
1989-08-24
11:56:20
44.18 11.87 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 98199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-08-24 11:56:20 ± 0.211
Latitude 44.18 ± 0.01
Longitude 11.87 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 98199

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) 1185
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.02242
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 98199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:31:47

ML:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 98199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FVI.Z. 1989-08-24T11:57:31.60 10.0 undecidable manual SN 14 0.0224 0.51 0.2
--.MNS.Z. 1989-08-24T11:57:16.50 10.0 undecidable manual SN 161 0.017 -0.21 0.5
--.ASS.Z. 1989-08-24T11:57:01.50 10.0 undecidable manual SN 152 0.0113 -0.07 0.7
--.FVI.Z. 1989-08-24T11:57:01.90 10.0 undecidable manual PN 14 0.0224 0.55 0.4
--.MNS.Z. 1989-08-24T11:56:53.52 10.0 undecidable manual PN 161 0.017 0.48 0.7
--.CTI.Z. 1989-08-24T11:56:52.55 10.0 undecidable manual PN 355 0.0168 -0.25 1.2
--.ALP.Z. 1989-08-24T11:56:52.60 10.0 undecidable manual PN 138 0.0168 -0.07 1.4
--.BOB.Z. 1989-08-24T11:56:51.84 10.0 undecidable manual PN 289 0.0164 -0.32 1
--.BDI.Z. 1989-08-24T11:56:51.84 10.0 undecidable manual SG 263 0.0083 -0.82 0.1
--.MME.Z. 1989-08-24T11:56:50.25 10.0 undecidable manual SG 271 0.0075 0.24 0.6
--.AM8.Z. 1989-08-24T11:56:46.10 10.0 undecidable manual PN 116 0.0125 -0.18 1.6
--.ASS.Z. 1989-08-24T11:56:45.15 10.0 undecidable manual PN 152 0.0113 0.85 0.2
--.CM8.Z. 1989-08-24T11:56:45.80 10.0 undecidable manual PN 136 0.0121 0.2 1.5
--.ARV.Z. 1989-08-24T11:56:40.65 10.0 positive manual PG 131 0.0092 -0.5 1.6
--.BDI.Z. 1989-08-24T11:56:39.30 10.0 undecidable manual PG 263 0.0083 -0.12 1.7
--.MME.Z. 1989-08-24T11:56:37.57 10.0 undecidable manual PG 271 0.0075 -0.05 1.8
--.PGD.Z. 1989-08-24T11:56:33.68 10.0 undecidable manual SG 199 0.0029 0.23 0.6
--.SFI.Z. 1989-08-24T11:56:31.80 10.0 undecidable manual SG 183 0.0024 0.09 0.7
--.RSM.Z. 1989-08-24T11:56:30.61 10.0 undecidable manual PG 120 0.0044 -0.46 0.9
--.PGD.Z. 1989-08-24T11:56:28.23 10.0 undecidable manual PG 199 0.0029 0.17 1.7
--.SFI.Z. 1989-08-24T11:56:27.20 10.0 undecidable manual PG 183 0.0024 0.14 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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