Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 30-01-2009 and time 22:33:33 (Italy) in region 9 km N Roma (RM)

A magnitude ML 2.0 earthquake occured in region: 9 km N Roma (RM), on

  • 30-01-2009 21:33:33 (UTC)
  • 30-01-2009 22:33:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.9740, 12.4810 at 8 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
Roma RM 9 2864731 2864731
Fonte Nuova RM 12 32562 2897293
Riano RM 14 10466 2907759
Formello RM 14 12918 2920677
Monterotondo RM 14 40830 2961507
Mentana RM 15 22921 2984428
Sacrofano RM 15 7740 2992168
Castelnuovo di Porto RM 17 8630 3000798
Morlupo RM 19 8696 3009494
Capena RM 19 10592 3020086

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km N of Roma (2864731 inhabitants)
21 Km W of Guidonia Montecelio (88673 inhabitants)
26 Km W of Tivoli (56533 inhabitants)
30 Km NE of Fiumicino (78395 inhabitants)
34 Km N of Pomezia (62966 inhabitants)
40 Km NW of Velletri (53303 inhabitants)
44 Km NW of Aprilia (73446 inhabitants)
58 Km E of Civitavecchia (52991 inhabitants)
58 Km SE of Viterbo (67173 inhabitants)
60 Km N of Anzio (54211 inhabitants)
66 Km NW of Latina (125985 inhabitants)
67 Km S of Terni (111501 inhabitants)
87 Km W of L'Aquila (69753 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 2.3
ML 2.0 		2009-01-30
21:33:33		 41.974 12.481 8 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 741569
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-01-30 21:33:33 ± 0.21
Latitude 41.9740 ± 0.0072
Longitude 12.4810 ± 0.0145
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 741569

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1175
Semi-minor axis of confidence ellipse (meter) 754
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 1442.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 197
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.09627
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 741569
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:01:30

Md:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 741569
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:01:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHN. 2009-01-30T21:34:07.37 0.3 undecidable manual Sg 28 108.6135 1.204 43
IV.VVLD.HHZ. 2009-01-30T21:34:02.93 0.1 undecidable manual Sg 97 95.0382 0.395 81
IV.LNSS.HHZ. 2009-01-30T21:33:59.79 0.3 undecidable manual Sg 33 83.5497 0.311 63
IV.PTQR.SHZ. 2009-01-30T21:33:57.70 0.3 undecidable manual Sg 86 76.0683 0.235 65
IV.GUAR.HHZ. 2009-01-30T21:33:55.96 0.3 undecidable manual Sg 106 71.4729 -0.298 65
IV.ASS.SHZ. 2009-01-30T21:33:54.95 0.6 undecidable manual Pg 7 121.6893 0.385 39
IV.SDI.SHZ. 2009-01-30T21:33:53.45 0.6 undecidable manual Pg 104 113.6973 0.104 42
IV.NRCA.HHN. 2009-01-30T21:33:52.27 0.1 undecidable manual Pg 28 108.6135 -0.283 81
IV.FAGN.HHE. 2009-01-30T21:33:52.85 10.0 undecidable manual Pg 0 0 0
IV.MNS.HHZ. 2009-01-30T21:33:50.06 0.3 undecidable manual Sg 20 48.5181 -0.076 71
IV.VVLD.HHZ. 2009-01-30T21:33:49.91 0.1 undecidable manual Pg 97 95.0382 -0.556 78
IV.LNSS.HHZ. 2009-01-30T21:33:48.37 0.1 undecidable manual Pg 33 83.5497 -0.33 84
IV.PTQR.SHZ. 2009-01-30T21:33:47.05 0.1 undecidable manual Pg 86 76.0683 -0.489 83
IV.GUAR.HHZ. 2009-01-30T21:33:46.89 0.1 undecidable manual Pg 106 71.4729 0.052 91
IV.MNS.HHZ. 2009-01-30T21:33:43.04 0.1 undecidable manual Pg 20 48.5181 -0.266 91
IV.MA9.HHE. 2009-01-30T21:33:43.60 0.3 undecidable manual Sg 147 26.9508 -0.097 74
IV.MTCE.HHZ. 2009-01-30T21:33:42.13 0.3 undecidable manual Sg 76 22.2555 -0.002 76
IV.MA9.HHE. 2009-01-30T21:33:39.72 0.3 undecidable manual Pg 147 26.9508 0.132 73
IV.ROM9.HHN. 2009-01-30T21:33:38.08 0.1 undecidable manual Pg 170 16.3725 0.487 92
IV.MTCE.HHZ. 2009-01-30T21:33:38.64 0.1 positive manual Pg 76 22.2555 -0.043 100
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
Waveforms Seismic signals in miniseed + resp format Download