Earthquake with magnitude of Md 3.2 on date 17-10-1989 and time 21:23:08 (Italy) in region 3 km W Velletri (RM)

A magnitude Md 3.2 earthquake occured in region: 3 km W Velletri (RM), on

  • 17-10-1989 20:23:08 (UTC)
  • 17-10-1989 21:23:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.699, 12.75 at 5 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
Velletri RM 3 53303 53303
Nemi RM 4 1943 55246
Lanuvio RM 4 13632 68878
Genzano di Roma RM 5 23970 92848
Ariccia RM 7 19407 112255
Lariano RM 8 13432 125687
Rocca di Papa RM 8 17034 142721
Albano Laziale RM 8 41715 184436
Castel Gandolfo RM 10 8997 193433
Rocca Priora RM 11 11962 205395
Marino RM 11 43026 248421
Grottaferrata RM 12 20327 268748
Monte Compatri RM 12 11978 280726
Monte Porzio Catone RM 13 8693 289419
Frascati RM 13 22087 311506
Cisterna di Latina LT 13 36868 348374
Aprilia LT 14 73446 421820
Rocca Massima LT 14 1136 422956
San Cesareo RM 14 15153 438109
Artena RM 15 14276 452385
Labico RM 15 6379 458764
Cori LT 15 11065 469829
Colonna RM 15 4287 474116
Valmontone RM 17 15959 490075
Ciampino RM 17 38412 528487
Zagarolo RM 17 17843 546330
Ardea RM 20 49183 595513
Palestrina RM 20 21672 617185
Gallicano nel Lazio RM 20 6334 623519

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km W of Velletri (53303 inhabitants)
14 Km NE of Aprilia (73446 inhabitants)
21 Km E of Pomezia (62966 inhabitants)
29 Km NW of Latina (125985 inhabitants)
30 Km NE of Anzio (54211 inhabitants)
30 Km S of Tivoli (56533 inhabitants)
31 Km SE of Roma (2864731 inhabitants)
34 Km S of Guidonia Montecelio (88673 inhabitants)
43 Km E of Fiumicino (78395 inhabitants)
90 Km SW of L'Aquila (69753 inhabitants)
90 Km E of Civitavecchia (52991 inhabitants)
96 Km SE of Viterbo (67173 inhabitants)
96 Km S of Terni (111501 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
Bulletin
Rev1000
Md 3.2
ML-VAX 2.1
1989-10-17
20:23:08
41.699 12.75 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 102349
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-10-17 20:23:08 ± 0.289
Latitude 41.6990 ± 0.0156
Longitude 12.7500 ± 0.0208
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 102349

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) 2447.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 204
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00057
Epicentral distance of station farthest from the epicenter (degree) 0.02064
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Md:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 102349
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:35:23

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 102349
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
--.ARV.Z. 1989-10-17T20:24:03.64 10.0 undecidable manual SN 4 0.0162 -0.04 0.5
--.ASS.Z. 1989-10-17T20:23:53.90 10.0 undecidable manual SN 356 0.0122 0.69 0.4
--.PGD.Z. 1989-10-17T20:23:46.50 10.0 undecidable manual PN 341 0.0206 -0.87 0.5
--.RFI.Z. 1989-10-17T20:23:44.52 10.0 undecidable manual SG 112 0.009 0.43 0.5
--.TR9.Z. 1989-10-17T20:23:43.70 10.0 undecidable manual PN 108 0.0177 0.88 0.5
--.ARV.Z. 1989-10-17T20:23:40.63 10.0 negative manual PN 4 0.0162 0.1 2.3
--.SOR.Z. 1989-10-17T20:23:37.40 10.0 undecidable manual PN 132 0.0147 -0.79 0.7
--.CM8.Z. 1989-10-17T20:23:37.38 10.0 undecidable manual PN 10 0.0137 0.71 0.8
--.ASS.Z. 1989-10-17T20:23:34.29 10.0 undecidable manual PN 356 0.0122 -0.2 1.3
--.ALP.Z. 1989-10-17T20:23:34.24 10.0 undecidable manual PN 28 0.0111 1.48 0.2
--.DUI.Z. 1989-10-17T20:23:33.50 10.0 undecidable manual PN 91 0.0114 0.23 1.4
--.SGG.Z. 1989-10-17T20:23:33.00 10.0 undecidable manual PN 103 0.0113 -0.02 1.4
--.MNS.Z. 1989-10-17T20:23:33.14 10.0 undecidable manual SG 355 0.0062 -0.72 0.4
--.AZI.Z. 1989-10-17T20:23:30.63 10.0 undecidable manual SG 60 0.0053 0.03 0.7
--.RFI.Z. 1989-10-17T20:23:28.67 10.0 undecidable manual PG 112 0.009 -0.55 1.2
--.MNS.Z. 1989-10-17T20:23:21.89 10.0 undecidable manual PG 355 0.0062 -1.43 0.2
--.AZI.Z. 1989-10-17T20:23:20.28 10.0 positive manual PG 60 0.0053 -1.16 0.8
--.CP9.Z. 1989-10-17T20:23:17.54 10.0 undecidable manual SG 42 0.0019 -0.11 0.6
--.CP9.Z. 1989-10-17T20:23:14.00 10.0 positive manual PG 42 0.0019 0.04 3.3
--.RMP.Z. 1989-10-17T20:23:14.36 10.0 undecidable manual SG 342 0.0011 0.58 0.5
--.RDP.Z. 1989-10-17T20:23:12.98 10.0 undecidable manual SG 337 0.0006 1.02 0.2
--.RMP.Z. 1989-10-17T20:23:11.45 10.0 undecidable manual PG 342 0.0011 -0.27 1.5
--.RDP.Z. 1989-10-17T20:23:10.59 10.0 negative manual PG 337 0.0006 -0.08 3.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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