Earthquake with magnitude of Md 3.5 on date 19-08-1987 and time 02:23:19 (Italy) in region 9 km S Meldola (FC)

A magnitude Md 3.5 earthquake occured in region: 9 km S Meldola (FC), on

  • 19-08-1987 00:23:19 (UTC)
  • 19-08-1987 02:23:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.05, 12.07 at 16 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
Meldola FC 9 9970 9970
Predappio FC 10 6346 16316
Civitella di Romagna FC 12 3786 20102
Bertinoro FC 12 11059 31161
Mercato Saraceno FC 14 6886 38047
Galeata FC 14 2516 40563
Sarsina FC 15 3446 44009
Forlimpopoli FC 16 13290 57299
Cesena FC 17 96758 154057
Dovadola FC 17 1653 155710
Santa Sofia FC 17 4136 159846
Castrocaro Terme e Terra del Sole FC 17 6426 166272
Rocca San Casciano FC 19 1910 168182
Sogliano al Rubicone FC 19 3195 171377
Montiano FC 19 1716 173093
Roncofreddo FC 20 3386 176479
Forlì FC 20 117913 294392

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SW of Cesena (96758 inhabitants)
20 Km S of Forlì (117913 inhabitants)
31 Km SE of Faenza (58541 inhabitants)
39 Km W of Rimini (147750 inhabitants)
42 Km S of Ravenna (159116 inhabitants)
45 Km SE of Imola (69797 inhabitants)
66 Km N of Arezzo (99543 inhabitants)
69 Km W of Pesaro (94582 inhabitants)
72 Km E of Firenze (382808 inhabitants)
77 Km SE of Bologna (386663 inhabitants)
78 Km E of Scandicci (50609 inhabitants)
79 Km W of Fano (60888 inhabitants)
80 Km E of Prato (191150 inhabitants)
93 Km E of Pistoia (90315 inhabitants)
95 Km SE of Ferrara (133155 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 3.5
ML-VAX 3.3
1987-08-19
00:23:19
44.05 12.07 16 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 54199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-08-19 00:23:19 ± 0.144
Latitude 44.05 ± 0.01
Longitude 12.07 ± 0.01
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 54199

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) 980.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 61
Number of defining phases 61
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) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.08937
Number of stations at which the event was observed 54
Number of stations from which data was used for origin computation 54
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 9
Type of magnitude Md
Reference to an origin 54199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:52:15

ML:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 54199
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
--.SSF.Z. 1987-08-19T00:26:07.30 10.0 undecidable manual SN 299 0.0603 -0.66 0.1
--.MOX.Z. 1987-08-19T00:26:05.00 10.0 undecidable manual SN 357 0.0594 -0.46 0.3
--.GRR.Z. 1987-08-19T00:25:40.60 10.0 undecidable manual PN 300 0.0894 -0.22 0.7
--.FLN.Z. 1987-08-19T00:25:39.80 10.0 undecidable manual PN 302 0.0886 0.16 0.8
--.DOU.Z. 1987-08-19T00:25:13.80 10.0 undecidable manual PN 322 0.0711 0.83 0.1
--.LSF.Z. 1987-08-19T00:25:10.39 10.0 undecidable manual PN 290 0.0697 -0.47 0.5
--.LRG.Z. 1987-08-19T00:25:07.30 10.0 undecidable manual SN 263 0.0375 -0.26 0.5
--.TCF.Z. 1987-08-19T00:25:04.80 10.0 undecidable manual PN 291 0.0656 0.1 1
--.CAF.Z. 1987-08-19T00:25:03.60 10.0 undecidable manual PN 280 0.0647 0.43 0.6
--.OHR.Z. 1987-08-19T00:25:01.20 10.0 undecidable manual PN 111 0.0635 -0.21 0.9
--.FRF.Z. 1987-08-19T00:25:01.80 10.0 undecidable manual SN 264 0.0355 -0.47 0.3
--.MAF.Z. 1987-08-19T00:25:00.80 10.0 undecidable manual PN 291 0.0634 -0.4 0.6
--.SSF.Z. 1987-08-19T00:24:56.20 10.0 undecidable manual PN 299 0.0603 -0.39 0.7
--.AVF.Z. 1987-08-19T00:24:56.20 10.0 undecidable manual PN 297 0.0603 -0.31 0.8
--.MOX.Z. 1987-08-19T00:24:55.00 10.0 undecidable manual PN 357 0.0594 -0.15 1
--.LOR.Z. 1987-08-19T00:24:54.60 10.0 undecidable manual PN 302 0.0592 -0.21 1
--.LBF.Z. 1987-08-19T00:24:51.80 10.0 undecidable manual PN 300 0.0574 -0.33 0.8
--.GWF.Z. 1987-08-19T00:24:44.12 10.0 undecidable manual PN 329 0.0521 -0.02 1.2
--.HAU.Z. 1987-08-19T00:24:41.39 10.0 undecidable manual PN 316 0.0504 -0.08 1.2
--.CDF.Z. 1987-08-19T00:24:39.80 10.0 undecidable manual PN 324 0.0493 0.06 1.2
--.BSF.Z. 1987-08-19T00:24:36.60 10.0 undecidable manual PN 317 0.0474 -0.26 1
--.MOF.Z. 1987-08-19T00:24:35.30 10.0 undecidable manual PN 319 0.0461 0.2 1.1
--.FEL.Z. 1987-08-19T00:24:29.89 10.0 undecidable manual PN 324 0.0427 0.15 1.3
--.SLE.Z. 1987-08-19T00:24:26.30 10.0 undecidable manual PN 327 0.0402 0.37 0.9
--.ZLA.Z. 1987-08-19T00:24:24.20 10.0 undecidable manual PN 324 0.0386 0.74 0.2
--.LRG.Z. 1987-08-19T00:24:22.39 10.0 undecidable manual PN 263 0.0375 0.67 0.3
--.LMR.Z. 1987-08-19T00:24:20.80 10.0 undecidable manual PN 261 0.0367 0.22 1.2
--.LPL.Z. 1987-08-19T00:24:19.80 10.0 undecidable manual PN 292 0.0365 -0.5 0.6
--.FRF.Z. 1987-08-19T00:24:19.00 10.0 undecidable manual PN 264 0.0355 0.33 1
--.LPG.Z. 1987-08-19T00:24:19.60 10.0 undecidable manual PN 292 0.0363 -0.44 0.8
--.BNI.Z. 1987-08-19T00:24:18.65 10.0 undecidable manual PN 286 0.0357 -0.38 0.9
--.TR9.Z. 1987-08-19T00:24:17.00 10.0 undecidable manual PN 140 0.0341 0.39 0.9
--.DIX.Z. 1987-08-19T00:24:17.89 10.0 undecidable manual PN 303 0.0348 0.27 1.2
--.DOI.Z. 1987-08-19T00:24:12.24 10.0 undecidable manual PN 278 0.0313 -0.12 1.4
--.ORO.Z. 1987-08-19T00:24:09.24 10.0 undecidable manual PN 299 0.0297 -0.61 0.4
--.MNS.Z. 1987-08-19T00:24:09.24 10.0 undecidable manual SN 164 0.0155 -0.14 0.6
--.SGG.Z. 1987-08-19T00:24:08.60 10.0 undecidable manual PN 146 0.0283 0.8 0.2
--.MSC.Z. 1987-08-19T00:24:08.00 10.0 undecidable manual PN 153 0.0286 -0.14 1.4
--.TMA.Z. 1987-08-19T00:24:06.89 10.0 undecidable manual PN 313 0.0274 0.43 0.8
--.VAI.Z. 1987-08-19T00:24:05.46 10.0 negative manual PN 308 0.0266 0.3 2.2
--.SDI.Z. 1987-08-19T00:24:01.39 10.0 undecidable manual PN 150 0.0239 0.34 1
--.FOI.Z. 1987-08-19T00:24:00.45 10.0 undecidable manual PN 10 0.0233 0.33 1
--.RBL.Z. 1987-08-19T00:24:00.24 10.0 undecidable manual PN 22 0.0235 -0.15 1.4
--.AM8.Z. 1987-08-19T00:23:57.76 10.0 undecidable manual SN 113 0.0108 0.52 0.4
--.MDI.Z. 1987-08-19T00:23:57.63 10.0 negative manual PN 316 0.0216 0.09 2.9
--.RMP.Z. 1987-08-19T00:23:55.60 10.0 undecidable manual PN 167 0.0205 -0.25 1.2
--.CTI.Z. 1987-08-19T00:23:52.43 10.0 undecidable manual PN 351 0.0181 0.16 1.4
--.CO9.Z. 1987-08-19T00:23:52.85 10.0 undecidable manual PN 291 0.0181 0.76 0.2
--.TRI.Z. 1987-08-19T00:23:51.51 10.0 undecidable manual PN 34 0.0184 -1.11 0
--.MNS.Z. 1987-08-19T00:23:47.63 10.0 negative manual PN 164 0.0155 -0.5 1.3
--.ARV.Z. 1987-08-19T00:23:47.93 10.0 undecidable manual SG 130 0.0074 0.1 0.6
--.MC8.Z. 1987-08-19T00:23:41.73 10.0 undecidable manual PN 127 0.011 0.31 1.1
--.CM8.Z. 1987-08-19T00:23:40.39 10.0 negative manual PN 137 0.0104 0.06 2.9
--.AM8.Z. 1987-08-19T00:23:40.90 10.0 negative manual PN 113 0.0108 -0.22 2.5
--.PS9.Z. 1987-08-19T00:23:40.58 10.0 positive manual PN 254 0.0104 0.09 1.4
--.BDI.Z. 1987-08-19T00:23:39.39 10.0 negative manual PN 271 0.0095 0.3 2.2
--.MME.Z. 1987-08-19T00:23:38.00 10.0 undecidable manual PN 278 0.0089 -0.2 1.3
--.ASS.Z. 1987-08-19T00:23:38.78 10.0 undecidable manual PN 156 0.0096 -0.43 0.8
--.ARV.Z. 1987-08-19T00:23:35.67 10.0 positive manual PG 130 0.0074 -0.02 1.5
--.CRE.Z. 1987-08-19T00:23:28.68 10.0 positive manual PG 191 0.0039 0.31 1.1
--.PGD.Z. 1987-08-19T00:23:25.71 10.0 positive manual PG 235 0.0028 -0.3 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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