Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.0 on date 27-11-1988 and time 17:01:55 (UTC) in region 2 km SE Rocca Priora (RM)

A magnitude Md 2.0 earthquake occured in region: 2 km SE Rocca Priora (RM), on

  • 27-11-1988 17:01:55 (UTC)
  • 27-11-1988 18:01:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7870, 12.7810 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.

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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
San Cesareo RM 4 15153 39093
Colonna RM 6 4287 43380
Monte Porzio Catone RM 6 8693 52073
Rocca di Papa RM 7 17034 69107
Zagarolo RM 7 17843 86950
Lariano RM 8 13432 100382
Frascati RM 9 22087 122469
Labico RM 9 6379 128848
Nemi RM 9 1943 130791
Grottaferrata RM 9 20327 151118
Gallicano nel Lazio RM 10 6334 157452
Marino RM 10 43026 200478
Palestrina RM 11 21672 222150
Velletri RM 11 53303 275453
Genzano di Roma RM 12 23970 299423
Valmontone RM 12 15959 315382
Castel San Pietro Romano RM 12 902 316284
Castel Gandolfo RM 12 8997 325281
Ariccia RM 12 19407 344688
Albano Laziale RM 12 41715 386403
Artena RM 12 14276 400679
Cave RM 13 11287 411966
Lanuvio RM 13 13632 425598
Poli RM 15 2418 428016
Ciampino RM 15 38412 466428
Rocca di Cave RM 15 377 466805
Casape RM 16 744 467549
San Gregorio da Sassola RM 17 1619 469168
Capranica Prenestina RM 17 351 469519
Rocca Massima LT 17 1136 470655
Genazzano RM 17 6036 476691
Cori LT 19 11065 487756
Colleferro RM 20 21595 509351
Tivoli RM 20 56533 565884
San Vito Romano RM 20 3273 569157

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km N of Velletri (53303 inhabitants)
20 Km S of Tivoli (56533 inhabitants)
24 Km NE of Aprilia (73446 inhabitants)
24 Km S of Guidonia Montecelio (88673 inhabitants)
27 Km NE of Pomezia (62966 inhabitants)
27 Km E of Roma (2864731 inhabitants)
37 Km N of Latina (125985 inhabitants)
40 Km NE of Anzio (54211 inhabitants)
45 Km E of Fiumicino (78395 inhabitants)
81 Km SW of L'Aquila (69753 inhabitants)
87 Km S of Terni (111501 inhabitants)
88 Km E of Civitavecchia (52991 inhabitants)
90 Km SE of Viterbo (67173 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 2.0
ML-VAX 1.8 		1988-11-27
17:01:55		 41.787 12.781 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 82119
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-11-27 17:01:55 ± 0.213
Latitude 41.7870 ± 0.0215
Longitude 12.7810 ± 0.0193
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 82119

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) 2877.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00534
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 82119
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:17:11

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 82119
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(km) Takeoff_angle Residual Weight
--.MNS.Z. 1988-11-27T17:02:18.50 10.0 undecidable manual SG 352 0.5883 0.7 0.2
--.MNS.Z. 1988-11-27T17:02:09.00 10.0 undecidable manual PG 352 0.5883 0.58 0.5
--.CP9.Z. 1988-11-27T17:02:01.26 10.0 undecidable manual SG 59 0.1443 -0.29 0.7
--.CP9.Z. 1988-11-27T17:01:58.80 10.0 undecidable manual PG 59 0.1443 -0.23 1.7
--.RMP.Z. 1988-11-27T17:01:58.00 10.0 undecidable manual SG 292 0.0666 -0.6 0.4
--.RDP.Z. 1988-11-27T17:01:58.91 10.0 undecidable manual SG 239 0.0555 0.55 0.4
--.RDP.Z. 1988-11-27T17:01:57.35 10.0 negative manual PG 239 0.0555 0.16 3.7
--.RMP.Z. 1988-11-27T17:01:56.49 10.0 undecidable manual PG 292 0.0666 -0.84 0.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download