Earthquake with magnitude of Md 2.4 on date 09-03-1990 and time 19:12:57 (Italy) in region 5 km NE Forlimpopoli (FC)

A magnitude Md 2.4 earthquake occured in region: 5 km NE Forlimpopoli (FC), on

  • 09-03-1990 18:12:57 (UTC)
  • 09-03-1990 19:12:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.22, 12.17 at 10 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
Forlimpopoli FC 5 13290 13290
Bertinoro FC 9 11059 24349
Forlì FC 11 117913 142262
Cesena FC 11 96758 239020
Meldola FC 14 9970 248990
Cervia RA 15 28940 277930
Gambettola FC 17 10660 288590
Cesenatico FC 18 25796 314386
Castrocaro Terme e Terra del Sole FC 18 6426 320812
Montiano FC 19 1716 322528

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Forlì (117913 inhabitants)
11 Km NW of Cesena (96758 inhabitants)
22 Km S of Ravenna (159116 inhabitants)
24 Km E of Faenza (58541 inhabitants)
36 Km W of Rimini (147750 inhabitants)
39 Km E of Imola (69797 inhabitants)
69 Km NW of Pesaro (94582 inhabitants)
73 Km E of Bologna (386663 inhabitants)
80 Km NW of Fano (60888 inhabitants)
81 Km SE of Ferrara (133155 inhabitants)
87 Km N of Arezzo (99543 inhabitants)
89 Km NE of Firenze (382808 inhabitants)
94 Km E of Prato (191150 inhabitants)
95 Km NE of Scandicci (50609 inhabitants)
99 Km SE 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 2.4 1990-03-09
18:12:57
44.22 12.17 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 111409
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-03-09 18:12:57 ± 0.417
Latitude 44.22 ± 0.03
Longitude 12.17 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 111409

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) 2988.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 278
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00316
Epicentral distance of station farthest from the epicenter (degree) 0.00818
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 111409
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:43:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1990-03-09T18:13:29.21 10.0 undecidable manual SG 142 0.0082 0.45 0.1
--.ARV.Z. 1990-03-09T18:13:15.46 10.0 undecidable manual PG 142 0.0082 -0.13 1.3
--.PGD.Z. 1990-03-09T18:13:14.92 10.0 undecidable manual SG 223 0.0042 0.17 0.6
--.SFI.Z. 1990-03-09T18:13:12.14 10.0 undecidable manual SG 216 0.0035 -0.02 0.8
--.RSM.Z. 1990-03-09T18:13:10.32 10.0 undecidable manual SG 145 0.0032 -0.56 0
--.PGD.Z. 1990-03-09T18:13:07.46 10.0 undecidable manual PG 223 0.0042 -0.04 2
--.SFI.Z. 1990-03-09T18:13:05.94 10.0 undecidable manual PG 216 0.0035 -0.07 1.9
--.RSM.Z. 1990-03-09T18:13:05.46 10.0 undecidable manual PG 145 0.0032 0.2 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download