Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.1 on date 01-04-1990 and time 19:54:42 (UTC) in region 2 km S Fara in Sabina (RI)

A magnitude Md 2.1 earthquake occured in region: 2 km S Fara in Sabina (RI), on

  • 01-04-1990 19:54:42 (UTC)
  • 01-04-1990 21:54:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.1890, 12.7300 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Fara in Sabina RI 2 13742 13742
Toffia RI 3 1058 14800
Castelnuovo di Farfa RI 5 1059 15859
Nerola RM 6 1926 17785
Montelibretti RM 6 5323 23108
Poggio Nativo RI 6 2622 25730
Mompeo RI 7 530 26260
Montopoli di Sabina RI 7 4210 30470
Salisano RI 8 567 31037
Frasso Sabino RI 8 743 31780
Montorio Romano RM 9 1984 33764
Moricone RM 9 2650 36414
Poggio Mirteto RI 9 6315 42729
Casaprota RI 9 744 43473
Scandriglia RI 10 3108 46581
Torrita Tiberina RM 11 1089 47670
Fiano Romano RM 11 15360 63030
Monteleone Sabino RI 12 1224 64254
Nazzano RM 12 1436 65690
Poggio San Lorenzo RI 12 589 66279
Monteflavio RM 12 1348 67627
Civitella San Paolo RM 12 2066 69693
Poggio Catino RI 12 1341 71034
Poggio Moiano RI 12 2751 73785
Montenero Sabino RI 13 299 74084
Filacciano RM 13 477 74561
Palombara Sabina RM 14 13269 87830
Torricella in Sabina RI 14 1342 89172
Cantalupo in Sabina RI 15 1685 90857
Ponzano Romano RM 15 1155 92012
Roccantica RI 15 563 92575
Monte San Giovanni in Sabina RI 16 714 93289
Forano RI 17 3179 96468
Capena RM 17 10592 107060
Selci RI 17 1106 108166
Sant'Angelo Romano RM 17 5018 113184
Casperia RI 17 1246 114430
Monterotondo RM 18 40830 155260
Sant'Oreste RM 18 3687 158947
Stimigliano RI 18 2328 161275
Colle di Tora RI 18 372 161647
Percile RM 18 255 161902
Orvinio RI 18 405 162307
Rocca Sinibalda RI 19 815 163122
Mentana RM 19 22921 186043
Licenza RM 19 1011 187054
Morlupo RM 19 8696 195750
Marcellina RM 19 7280 203030
Castel di Tora RI 20 288 203318
Pozzaglia Sabina RI 20 360 203678
Torri in Sabina RI 20 1256 204934
Belmonte in Sabina RI 20 636 205570

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Guidonia Montecelio (88673 inhabitants)
26 Km N of Tivoli (56533 inhabitants)
39 Km NE of Roma (2864731 inhabitants)
42 Km S of Terni (111501 inhabitants)
56 Km N of Velletri (53303 inhabitants)
57 Km E of Viterbo (67173 inhabitants)
58 Km W of L'Aquila (69753 inhabitants)
61 Km NE of Pomezia (62966 inhabitants)
62 Km NE of Fiumicino (78395 inhabitants)
66 Km N of Aprilia (73446 inhabitants)
78 Km E of Civitavecchia (52991 inhabitants)
81 Km N of Latina (125985 inhabitants)
83 Km N of Anzio (54211 inhabitants)
85 Km S of Foligno (57155 inhabitants)
96 Km SW of Teramo (54892 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 2.1 1990-04-01
19:54:42		 42.189 12.73 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 113169
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-04-01 19:54:42 ± 0.099
Latitude 42.1890 ± 0.0044
Longitude 12.7300 ± 0.0197
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 113169

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) 1691.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00842
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 113169
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:45:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SDI.Z. 1990-04-01T19:55:15.50 10.0 undecidable manual SG 120 0.9324 0.25 0.3
--.SDI.Z. 1990-04-01T19:55:01.00 10.0 undecidable manual PG 120 0.9324 -0.34 0.5
--.RDP.Z. 1990-04-01T19:54:59.50 10.0 undecidable manual SG 181 0.4218 0.47 0.1
--.RMP.Z. 1990-04-01T19:54:56.80 10.0 undecidable manual SG 183 0.3774 -0.23 0.5
--.RDP.Z. 1990-04-01T19:54:52.00 10.0 undecidable manual PG 181 0.4218 0.02 1.8
--.MNS.Z. 1990-04-01T19:54:50.00 10.0 undecidable manual SG 349 0.1998 -0.2 0.8
--.RMP.Z. 1990-04-01T19:54:50.50 10.0 undecidable manual PG 183 0.3774 -0.33 0.8
--.MNS.Z. 1990-04-01T19:54:47.00 10.0 positive manual PG 349 0.1998 0.12 3.3
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