Earthquake with magnitude of Md 3.3 on date 01-04-1987 and time 05:54:33 (Italy) in region 4 km E Forlimpopoli (FC)

A magnitude Md 3.3 earthquake occured in region: 4 km E Forlimpopoli (FC), on

  • 01-04-1987 03:54:33 (UTC)
  • 01-04-1987 05:54:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.18, 12.18 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 4 13290 13290
Bertinoro FC 5 11059 24349
Cesena FC 7 96758 121107
Meldola FC 11 9970 131077
Forlì FC 12 117913 248990
Gambettola FC 14 10660 259650
Montiano FC 15 1716 261366
Longiano FC 17 7126 268492
Cervia RA 17 28940 297432
Predappio FC 18 6346 303778
Cesenatico FC 18 25796 329574
Castrocaro Terme e Terra del Sole FC 18 6426 336000
Gatteo FC 18 9068 345068
Roncofreddo FC 19 3386 348454

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km NW of Cesena (96758 inhabitants)
12 Km E of Forlì (117913 inhabitants)
26 Km E of Faenza (58541 inhabitants)
27 Km S of Ravenna (159116 inhabitants)
34 Km W of Rimini (147750 inhabitants)
42 Km E of Imola (69797 inhabitants)
66 Km W of Pesaro (94582 inhabitants)
75 Km E of Bologna (386663 inhabitants)
77 Km W of Fano (60888 inhabitants)
82 Km N of Arezzo (99543 inhabitants)
86 Km SE of Ferrara (133155 inhabitants)
86 Km NE of Firenze (382808 inhabitants)
92 Km NE of Scandicci (50609 inhabitants)
92 Km E of Prato (191150 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 3.3 1987-04-01
03:54:33
44.18 12.18 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 43889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-04-01 03:54:33 ± 0.139
Latitude 44.18 ± 0.01
Longitude 12.18 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 43889

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) 1864.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 79
Number of defining phases 79
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00397
Epicentral distance of station farthest from the epicenter (degree) 0.06589
Number of stations at which the event was observed 58
Number of stations from which data was used for origin computation 58
Magnitude information

Md:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 43889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:43:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LOR.Z. 1987-04-01T03:57:20.40 10.0 undecidable manual SN 300 0.0591 -0.04 0.5
--.MOX.Z. 1987-04-01T03:57:19.00 10.0 undecidable manual SN 356 0.0583 0.83 0.3
--.LBF.Z. 1987-04-01T03:57:16.40 10.0 undecidable manual SN 298 0.0574 0.46 0.4
--.SMF.Z. 1987-04-01T03:57:15.00 10.0 undecidable manual SN 295 0.0571 -0.04 0.5
--.HAU.Z. 1987-04-01T03:56:56.40 10.0 undecidable manual SN 315 0.05 -0.06 0.5
--.CDF.Z. 1987-04-01T03:56:51.20 10.0 undecidable manual SN 322 0.0487 -1.82 0.1
--.BSF.Z. 1987-04-01T03:56:47.20 10.0 undecidable manual SN 315 0.047 -1.23 0.3
--.LPG.Z. 1987-04-01T03:56:22.30 10.0 undecidable manual SN 290 0.0365 1.47 0.2
--.TCF.Z. 1987-04-01T03:56:20.30 10.0 undecidable manual PN 289 0.0659 0.05 1.1
--.BGF.Z. 1987-04-01T03:56:15.20 10.0 undecidable manual PN 292 0.0627 -0.19 1.1
--.AVF.Z. 1987-04-01T03:56:11.70 10.0 undecidable manual PN 295 0.0604 -0.15 1.1
--.SSF.Z. 1987-04-01T03:56:11.39 10.0 undecidable manual PN 298 0.0603 -0.46 1
--.LOR.Z. 1987-04-01T03:56:09.89 10.0 undecidable manual PN 300 0.0591 -0.08 1.1
--.MOX.Z. 1987-04-01T03:56:08.00 10.0 undecidable manual PN 356 0.0583 -0.66 0.9
--.LBF.Z. 1987-04-01T03:56:07.30 10.0 undecidable manual PN 298 0.0574 -0.07 1.2
--.SBF.Z. 1987-04-01T03:56:07.00 10.0 undecidable manual SN 266 0.0308 1.46 0.2
--.SMF.Z. 1987-04-01T03:56:06.70 10.0 undecidable manual PN 295 0.0571 -0.15 1.2
--.ORX.Z. 1987-04-01T03:56:02.00 10.0 undecidable manual SN 297 0.0297 -0.81 0.5
--.IMP.Z. 1987-04-01T03:55:57.50 10.0 undecidable manual SN 266 0.0278 -0.1 0.7
--.HAU.Z. 1987-04-01T03:55:56.00 10.0 undecidable manual PN 315 0.05 -0.12 1.3
--.CDF.Z. 1987-04-01T03:55:54.10 10.0 undecidable manual PN 322 0.0487 -0.04 1.3
--.CVF.Z. 1987-04-01T03:55:54.00 10.0 undecidable manual SN 237 0.026 1.07 0.4
--.FIN.Z. 1987-04-01T03:55:52.50 10.0 undecidable manual SN 271 0.0256 0.71 0.5
--.BSF.Z. 1987-04-01T03:55:51.30 10.0 undecidable manual PN 315 0.047 -0.19 1.3
--.BUH.Z. 1987-04-01T03:55:51.80 10.0 undecidable manual PN 329 0.0473 -0.08 1.3
--.KHC.Z. 1987-04-01T03:55:49.00 10.0 undecidable manual PN 10 0.0453 0.01 1.4
--.SGO.Z. 1987-04-01T03:55:40.00 10.0 undecidable manual PN 146 0.0386 1.34 0.6
--.LRG.Z. 1987-04-01T03:55:38.60 10.0 undecidable manual PN 261 0.0383 0.43 1.4
--.LMR.Z. 1987-04-01T03:55:37.10 10.0 undecidable manual PN 259 0.0376 0.01 1.5
--.FRF.Z. 1987-04-01T03:55:35.60 10.0 undecidable manual PN 262 0.0363 0.51 1.4
--.LPG.Z. 1987-04-01T03:55:35.39 10.0 undecidable manual PN 290 0.0365 -0.16 1.5
--.BNI.Z. 1987-04-01T03:55:35.50 10.0 undecidable manual PN 284 0.036 0.73 1.2
--.DA9.Z. 1987-04-01T03:55:29.00 10.0 undecidable manual PN 276 0.0318 0.65 1.4
--.SOO.Z. 1987-04-01T03:55:29.50 10.0 undecidable manual PN 276 0.0328 -0.25 1.6
--.STV.Z. 1987-04-01T03:55:28.20 10.0 undecidable manual PN 272 0.0312 0.78 1.3
--.SBF.Z. 1987-04-01T03:55:27.10 10.0 undecidable manual PN 266 0.0308 0.37 1.6
--.HVA.Z. 1987-04-01T03:55:24.20 10.0 undecidable manual PN 106 0.0291 -0.08 1.7
--.ORX.Z. 1987-04-01T03:55:24.00 10.0 undecidable manual PN 297 0.0297 -1.15 0.9
--.DUI.Z. 1987-04-01T03:55:24.00 10.0 undecidable manual PN 145 0.0271 2.79 0
--.ORO.Z. 1987-04-01T03:55:24.50 10.0 undecidable manual PN 297 0.0297 -0.62 1.4
--.IMP.Z. 1987-04-01T03:55:22.40 10.0 undecidable manual PN 266 0.0278 0.26 1.7
--.KBA.Z. 1987-04-01T03:55:21.50 10.0 positive manual PN 14 0.027 0.39 3.2
--.ROB.Z. 1987-04-01T03:55:21.40 10.0 undecidable manual PN 273 0.0277 -0.69 1.4
--.CKI.Z. 1987-04-01T03:55:20.50 10.0 undecidable manual PN 276 0.0252 2.32 0.1
--.FIN.Z. 1987-04-01T03:55:19.10 10.0 undecidable manual PN 271 0.0256 0.31 1.6
--.CVF.Z. 1987-04-01T03:55:19.89 10.0 undecidable manual PN 237 0.026 0.45 1.6
--.SD1.Z. 1987-04-01T03:55:18.00 10.0 undecidable manual PN 153 0.0246 0.63 1.4
--.PS9.Z. 1987-04-01T03:55:16.00 10.0 undecidable manual SN 249 0.0114 1.53 0.2
--.VBY.Z. 1987-04-01T03:55:14.30 10.0 undecidable manual PN 57 0.0229 -0.51 1.5
--.CM8.Z. 1987-04-01T03:55:14.80 10.0 undecidable manual SN 143 0.0108 1.98 0.1
--.GEN.Z. 1987-04-01T03:55:14.00 10.0 undecidable manual PN 276 0.0209 2.28 0.1
--.LJU.Z. 1987-04-01T03:55:13.89 10.0 undecidable manual PN 40 0.0224 -0.13 1.7
--.ASS.Z. 1987-04-01T03:55:13.00 10.0 undecidable manual SN 162 0.0104 1.11 0.4
--.FOI.Z. 1987-04-01T03:55:13.50 10.0 undecidable manual PN 9 0.022 0.08 1.7
--.MDI.Z. 1987-04-01T03:55:13.50 10.0 undecidable manual PN 313 0.0213 1.27 0.8
--.RBL.Z. 1987-04-01T03:55:13.50 10.0 undecidable manual PN 22 0.0222 -0.09 1.7
--.BDI.Z. 1987-04-01T03:55:11.50 10.0 undecidable manual SN 264 0.0102 0.22 1
--.AQU.Z. 1987-04-01T03:55:10.00 10.0 undecidable manual PN 153 0.0182 2.41 0.1
--.VOY.Z. 1987-04-01T03:55:09.20 10.0 undecidable manual PN 32 0.0199 -0.95 2.2
--.CO9.Z. 1987-04-01T03:55:09.50 10.0 undecidable manual PN 287 0.0183 1.83 0.3
--.CEY.Z. 1987-04-01T03:55:08.80 10.0 undecidable manual PN 44 0.02 -1.55 0.5
--.CTI.Z. 1987-04-01T03:55:05.50 10.0 undecidable manual PN 348 0.0172 -0.43 1.6
--.SAL.Z. 1987-04-01T03:55:05.00 10.0 undecidable manual PN 320 0.0166 -0.11 1.7
--.TRI.Z. 1987-04-01T03:55:04.50 10.0 undecidable manual PN 35 0.0171 -1.32 0.8
--.BVT.Z. 1987-04-01T03:55:03.60 10.0 undecidable manual PN 280 0.0154 0.31 1.6
--.ARV.Z. 1987-04-01T03:55:03.00 10.0 undecidable manual SG 140 0.0079 -0.67 0.8
--.FIR.Z. 1987-04-01T03:54:59.00 10.0 undecidable manual SG 238 0.007 -1.52 0.3
--.AM8.Z. 1987-04-01T03:54:56.30 10.0 undecidable manual PN 120 0.0108 -0.23 1.7
--.BDI.Z. 1987-04-01T03:54:56.00 10.0 undecidable manual PN 264 0.0102 0.6 1.4
--.PS9.Z. 1987-04-01T03:54:56.00 10.0 undecidable manual PN 249 0.0114 -1.24 0.8
--.ASS.Z. 1987-04-01T03:54:55.00 10.0 undecidable manual PN 162 0.0104 -0.75 1.3
--.CM8.Z. 1987-04-01T03:54:55.39 10.0 undecidable manual PN 143 0.0108 -0.9 1.2
--.CRE.Z. 1987-04-01T03:54:52.20 10.0 undecidable manual SG 196 0.0052 -2.03 0.1
--.ARV.Z. 1987-04-01T03:54:49.50 10.0 undecidable manual PG 140 0.0079 -1.51 0.6
--.PGD.Z. 1987-04-01T03:54:48.50 10.0 undecidable manual SG 227 0.004 -1.4 0.4
--.FIR.Z. 1987-04-01T03:54:47.70 10.0 negative manual PG 238 0.007 -1.49 1.2
--.PRO.Z. 1987-04-01T03:54:46.70 10.0 undecidable manual PG 116 0.0051 1.36 0.7
--.CRE.Z. 1987-04-01T03:54:44.00 10.0 undecidable manual PG 196 0.0052 -1.55 0.5
--.PGD.Z. 1987-04-01T03:54:41.50 10.0 undecidable manual PG 227 0.004 -1.55 0.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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