Earthquake with magnitude of Md 3.9 on date 19-10-1989 and time 23:33:26 (UTC) in region 2 km S Rocca Priora (RM)

A magnitude Md 3.9 earthquake occured in region: 2 km S Rocca Priora (RM), on

  • 19-10-1989 23:33:26 (UTC)
  • 20-10-1989 00:33:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7750, 12.7600 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
Rocca Priora RM 2 11962 11962
Monte Compatri RM 4 11978 23940
Rocca di Papa RM 4 17034 40974
Monte Porzio Catone RM 6 8693 49667
San Cesareo RM 6 15153 64820
Colonna RM 7 4287 69107
Nemi RM 7 1943 71050
Frascati RM 7 22087 93137
Grottaferrata RM 8 20327 113464
Lariano RM 8 13432 126896
Marino RM 8 43026 169922
Genzano di Roma RM 9 23970 193892
Zagarolo RM 9 17843 211735
Castel Gandolfo RM 10 8997 220732
Ariccia RM 10 19407 240139
Albano Laziale RM 10 41715 281854
Velletri RM 10 53303 335157
Labico RM 11 6379 341536
Lanuvio RM 12 13632 355168
Gallicano nel Lazio RM 12 6334 361502
Palestrina RM 13 21672 383174
Valmontone RM 13 15959 399133
Ciampino RM 13 38412 437545
Artena RM 14 14276 451821
Castel San Pietro Romano RM 14 902 452723
Cave RM 15 11287 464010
Poli RM 17 2418 466428
Rocca Massima LT 17 1136 467564
Rocca di Cave RM 17 377 467941
Casape RM 18 744 468685
San Gregorio da Sassola RM 19 1619 470304
Capranica Prenestina RM 19 351 470655
Genazzano RM 19 6036 476691
Cori LT 19 11065 487756

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km N of Velletri (53303 inhabitants)
21 Km S of Tivoli (56533 inhabitants)
22 Km NE of Aprilia (73446 inhabitants)
24 Km E of Pomezia (62966 inhabitants)
25 Km S of Guidonia Montecelio (88673 inhabitants)
26 Km SE of Roma (2864731 inhabitants)
36 Km NW of Latina (125985 inhabitants)
38 Km N of Anzio (54211 inhabitants)
43 Km E of Fiumicino (78395 inhabitants)
83 Km SW of L'Aquila (69753 inhabitants)
87 Km E of Civitavecchia (52991 inhabitants)
88 Km S of Terni (111501 inhabitants)
90 Km SE of Viterbo (67173 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 3.9
M 3.8
1989-10-19
23:33:26
41.775 12.76 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 102459
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-10-19 23:33:26 ± 0.198
Latitude 41.7750 ± 0.0150
Longitude 12.7600 ± 0.0168
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 102459

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) 2173.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 60
Number of defining phases 60
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) 0.00024
Epicentral distance of station farthest from the epicenter (degree) 0.07471
Number of stations at which the event was observed 51
Number of stations from which data was used for origin computation 51
Magnitudes information

Md:3.9

Field Value
Value 3.9
Uncertainty
Num. used stations 9
Type of magnitude Md
Reference to an origin 102459
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:35:29

M:3.8

Field Value
Value 3.8
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 102459
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:35:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PRU.Z. 1989-10-19T23:35:27.50 10.0 undecidable manual PN 7 8.2917 0.02 0.7
--.VKA.Z. 1989-10-19T23:35:10.50 10.0 undecidable manual PN 19 6.9486 1.49 0.3
--.BHG.Z. 1989-10-19T23:34:56.70 10.0 undecidable manual PN 0 5.9274 1.6 0.3
--.BNI.Z. 1989-10-19T23:34:48.50 10.0 undecidable manual PN 308 5.4945 -0.46 0.9
--.KBA.Z. 1989-10-19T23:34:47.00 10.0 undecidable manual PN 4 5.3058 0.5 0.9
--.DOI.Z. 1989-10-19T23:34:40.20 10.0 undecidable manual PN 306 4.8507 0 1
--.FVI.Z. 1989-10-19T23:34:39.69 10.0 undecidable manual PN 0 4.8063 0.06 1
--.MDI.Z. 1989-10-19T23:34:36.50 10.0 undecidable manual PN 332 4.551 0.32 1
--.CTI.Z. 1989-10-19T23:34:33.17 10.0 undecidable manual PN 349 4.3401 0.02 1.1
--.SAL.Z. 1989-10-19T23:34:31.50 10.0 undecidable manual PN 337 4.1514 0.93 0.8
--.GRI.Z. 1989-10-19T23:34:30.44 10.0 undecidable manual PN 135 4.0515 1.17 0.5
--.CKI.Z. 1989-10-19T23:34:30.80 10.0 undecidable manual PN 310 4.1958 -0.43 1
--.TRI.Z. 1989-10-19T23:34:27.78 10.0 undecidable manual PN 10 3.9849 -0.62 1
--.BOB.Z. 1989-10-19T23:34:26.60 10.0 undecidable manual PN 322 3.8406 -0.17 1.2
--.PE1.Z. 1989-10-19T23:34:24.00 10.0 undecidable manual PN 103 3.6186 0.61 1
--.TDS.Z. 1989-10-19T23:34:21.56 10.0 undecidable manual PN 126 3.4299 0.87 0.8
--.CZI.Z. 1989-10-19T23:34:21.68 10.0 undecidable manual PN 133 3.6075 -1.52 0.4
--.CSI.Z. 1989-10-19T23:34:20.10 10.0 undecidable manual PN 125 3.33 0.84 0.9
--.BRT.Z. 1989-10-19T23:34:20.70 10.0 undecidable manual PN 103 3.4077 0.32 1.2
--.CGL.Z. 1989-10-19T23:34:20.46 10.0 undecidable manual PN 228 3.5631 -2.02 0.2
--.BAI.Z. 1989-10-19T23:34:17.50 10.0 undecidable manual PN 100 3.1524 0.64 1.1
--.HVA.Z. 1989-10-19T23:34:17.50 10.0 undecidable manual PN 61 3.0525 1.99 0.2
--.MME.Z. 1989-10-19T23:34:13.92 10.0 undecidable manual PN 328 2.8416 1.31 0.6
--.CDM.Z. 1989-10-19T23:34:12.00 10.0 undecidable manual PN 103 2.7084 1.11 0.8
--.BDI.Z. 1989-10-19T23:34:10.00 10.0 undecidable manual PN 326 2.775 -1.68 0.3
--.DUI.Z. 1989-10-19T23:34:10.00 10.0 undecidable manual SN 94 1.2654 1.21 0.3
--.ASS.Z. 1989-10-19T23:34:10.00 10.0 undecidable manual SN 356 1.2876 0.81 0.5
--.MS1.Z. 1989-10-19T23:34:08.00 10.0 undecidable manual PN 90 2.3643 1.9 0.2
--.PII.Z. 1989-10-19T23:34:07.81 10.0 undecidable manual PN 320 2.5308 -0.63 1.2
--.FG3.Z. 1989-10-19T23:34:06.60 10.0 undecidable manual PN 90 2.3754 0.42 1.4
--.FIR.Z. 1989-10-19T23:34:06.50 10.0 undecidable manual PN 331 2.2755 1.66 0.4
--.PGD.Z. 1989-10-19T23:34:04.48 10.0 undecidable manual PN 340 2.2311 0.31 1.5
--.SFI.Z. 1989-10-19T23:34:03.50 10.0 undecidable manual PN 342 2.2311 -0.63 1.2
--.RFI.Z. 1989-10-19T23:34:03.89 10.0 undecidable manual SG 116 1.0212 1.22 0.3
--.TR9.Z. 1989-10-19T23:34:01.00 10.0 undecidable manual PN 110 1.9869 0.17 1.5
--.AM8.Z. 1989-10-19T23:34:00.55 10.0 undecidable manual PN 18 1.8648 1.26 0.7
--.CRE.Z. 1989-10-19T23:34:00.23 10.0 undecidable manual PN 342 1.9314 0.13 1.5
--.FG2.Z. 1989-10-19T23:33:58.74 10.0 undecidable manual PN 88 1.776 0.66 1.2
--.ARV.Z. 1989-10-19T23:33:57.75 10.0 negative manual PN 4 1.7205 0.51 2.7
--.SOR.Z. 1989-10-19T23:33:54.80 10.0 undecidable manual PN 134 1.6761 -1.8 0.3
--.OVO.Z. 1989-10-19T23:33:54.60 10.0 undecidable manual PN 127 1.5429 -0.23 1.5
--.SDI.Z. 1989-10-19T23:33:53.50 10.0 undecidable manual SG 94 0.777 -1.74 0.1
--.CM8.Z. 1989-10-19T23:33:52.64 10.0 undecidable manual PN 11 1.443 -0.73 1.1
--.AQU.Z. 1989-10-19T23:33:52.42 10.0 undecidable manual SG 39 0.7437 -1.2 0.3
--.DUI.Z. 1989-10-19T23:33:51.40 10.0 undecidable manual PN 94 1.2654 0.06 1.5
--.ASS.Z. 1989-10-19T23:33:50.36 10.0 negative manual PN 356 1.2876 -0.85 2.1
--.SGG.Z. 1989-10-19T23:33:50.50 10.0 undecidable manual PN 107 1.2654 -0.46 1.4
--.RFI.Z. 1989-10-19T23:33:47.10 10.0 undecidable manual PG 116 1.0212 -0.44 1.4
--.ALP.Z. 1989-10-19T23:33:47.39 10.0 undecidable manual PN! 30 1.1544 -2.17 0
--.AZI.Z. 1989-10-19T23:33:46.50 10.0 undecidable manual SG 66 0.5439 -0.57 0.5
--.AQU.Z. 1989-10-19T23:33:41.52 10.0 positive manual PG 39 0.7437 -0.7 2.4
--.SDI.Z. 1989-10-19T23:33:41.60 10.0 positive manual PG 94 0.777 -1.84 0.6
--.MNS.Z. 1989-10-19T23:33:38.24 10.0 positive manual PG 354 0.6105 -1.43 1
--.AZI.Z. 1989-10-19T23:33:37.47 10.0 positive manual PG 66 0.5439 -0.97 1.9
--.CP9.Z. 1989-10-19T23:33:32.92 10.0 undecidable manual SG 58 0.1665 -0.4 0.6
--.CP9.Z. 1989-10-19T23:33:31.13 10.0 positive manual PG 58 0.1665 0.63 2.5
--.RMP.Z. 1989-10-19T23:33:30.16 10.0 undecidable manual SG 310 0.0555 0.78 0.5
--.RDP.Z. 1989-10-19T23:33:29.37 10.0 undecidable manual SG 242 0.0222 0.55 0.5
--.RMP.Z. 1989-10-19T23:33:28.60 10.0 positive manual PG 310 0.0555 0.38 2.9
--.RDP.Z. 1989-10-19T23:33:27.68 10.0 positive manual PG 242 0.0222 -0.23 3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download