Earthquake with magnitude of Md 2.2 on date 08-12-1988 and time 21:43:15 (Italy) in region 2 km NW Predappio (FC)

A magnitude Md 2.2 earthquake occured in region: 2 km NW Predappio (FC), on

  • 08-12-1988 20:43:15 (UTC)
  • 08-12-1988 21:43:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.12, 11.98 at 23 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 2 6346 6346
Castrocaro Terme e Terra del Sole FC 7 6426 12772
Dovadola FC 7 1653 14425
Meldola FC 7 9970 24395
Rocca San Casciano FC 12 1910 26305
Civitella di Romagna FC 13 3786 30091
Forlì FC 13 117913 148004
Bertinoro FC 13 11059 159063
Galeata FC 14 2516 161579
Forlimpopoli FC 15 13290 174869
Modigliana FC 15 4560 179429
Portico e San Benedetto FC 18 756 180185
Tredozio FC 19 1212 181397
Santa Sofia FC 20 4136 185533

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Forlì (117913 inhabitants)
20 Km SE of Faenza (58541 inhabitants)
22 Km W of Cesena (96758 inhabitants)
34 Km SE of Imola (69797 inhabitants)
38 Km SW of Ravenna (159116 inhabitants)
48 Km W of Rimini (147750 inhabitants)
66 Km SE of Bologna (386663 inhabitants)
69 Km NE of Firenze (382808 inhabitants)
73 Km N of Arezzo (99543 inhabitants)
75 Km NE of Scandicci (50609 inhabitants)
75 Km E of Prato (191150 inhabitants)
79 Km W of Pesaro (94582 inhabitants)
85 Km SE of Ferrara (133155 inhabitants)
87 Km E of Pistoia (90315 inhabitants)
89 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
Rev 1000 Md 2.2
ML-VAX 1.9
1988-12-08
20:43:15
44.12 11.98 23 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 82879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-12-08 20:43:15 ± 0.32
Latitude 44.12 ± 0.02
Longitude 11.98 ± 0.03
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 82879

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) 2730.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 292
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.01004
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 82879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:17:52

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 82879
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
--.PII.Z. 1988-12-08T20:43:49.78 10.0 undecidable manual SN 249 0.01 -0.2 0.3
--.PII.Z. 1988-12-08T20:43:35.47 10.0 negative manual PN 249 0.01 0.08 2.5
--.CRE.Z. 1988-12-08T20:43:34.00 10.0 undecidable manual SG 181 0.0045 0.07 1.2
--.PGD.Z. 1988-12-08T20:43:28.50 10.0 undecidable manual SG 217 0.0027 0.34 0.2
--.CRE.Z. 1988-12-08T20:43:26.00 10.0 undecidable manual PG 181 0.0045 -0.12 1.8
--.SFI.Z. 1988-12-08T20:43:25.95 10.0 undecidable manual SG 203 0.002 -0.28 0.3
--.PGD.Z. 1988-12-08T20:43:22.50 10.0 undecidable manual PG 217 0.0027 -0.29 0.7
--.SFI.Z. 1988-12-08T20:43:21.92 10.0 undecidable manual PG 203 0.002 0.24 1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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