Earthquake with magnitude of M 0.0 on date 22-11-2009 and time 03:34:19 (UTC) in region Costa Laziale (Roma)

A magnitude M 0.0 earthquake occured in region: Costa Laziale (Roma), on

  • 22-11-2009 03:34:19 (UTC)
  • 22-11-2009 04:34:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6000, 12.4000 at 30 km depth.

The earthquake was located by: Fonte esterna non nota.

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
Pomezia RM 12 62966 62966
Ardea RM 12 49183 112149

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SW of Pomezia (62966 inhabitants)
21 Km W of Aprilia (73446 inhabitants)
24 Km SE of Fiumicino (78395 inhabitants)
25 Km NW of Anzio (54211 inhabitants)
33 Km W of Velletri (53303 inhabitants)
33 Km S of Roma (2864731 inhabitants)
45 Km W of Latina (125985 inhabitants)
52 Km SW of Guidonia Montecelio (88673 inhabitants)
52 Km SW of Tivoli (56533 inhabitants)
74 Km SE of Civitavecchia (52991 inhabitants)
94 Km S of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
M 0.0 2009-11-22
41.6 12.4 30 2014-10-15
Fonte esterna non nota 993349
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2009-11-22 03:34:19
Latitude 41.6000
Longitude 12.4000
Depth (km) 30 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> UNKNOWN
Event type earthquake
Origin ID 993349


Field Value
Preferred uncertainty description
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)
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 4
RMS of the travel time residuals of the arrivals used for the origin computation (sec)
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.00000
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 2
Magnitude information


Field Value
Value 0.0
Num. used stations
Type of magnitude M
Reference to an origin 993349
Agency INGV
Autore Fonte esterna non nota
Time of creation (UTC) 2014-10-15 07:39:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIR.HHZ. 2009-11-22T03:34:55.93 10.0 undecidable manual Pg 0 0 0
IV.FAGN.HHZ. 2009-11-22T03:34:48.04 10.0 undecidable manual Pg 0 0 0
IV.NRCA.SHZ. 2009-11-22T03:34:45.55 0.3 undecidable manual Sg 0 0 0
IV.SMA1.EHZ. 2009-11-22T03:34:44.10 0.3 undecidable manual Sg 0 0 0
IV.NRCA.SHZ. 2009-11-22T03:34:42.75 0.1 undecidable manual Pg 0 0 0
IV.SMA1.EHZ. 2009-11-22T03:34:41.90 0.1 undecidable manual Pg 0 0 0
IV.LAV9.HHN. 2009-11-22T03:34:29.73 10.0 undecidable manual Sg 0 0 0
IV.LAV9.HHN. 2009-11-22T03:34:26.32 10.0 undecidable manual Pg 0 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LAV9.HHN. Md:0.0 20 END duration s
IV.LAV9.HHE. ML:0.0 0.000505 0.3 AML other m 2009-11-22T03:34:26.32
IV.SMA1.EHN. ML:0.0 0.000035000000000000004 0.08 AML other m 2009-11-22T03:34:41.90
IV.SMA1.EHE. ML:0.0 0.000029999999999999997 0.2 AML other m 2009-11-22T03:34:41.90
IV.NRCA.SHZ. Md:0.0 16.1 END duration s
IV.FIR.HHN. ML:0.0 0.001055 0.04 AML other m 2009-11-22T03:34:55.93
IV.FIR.HHE. ML:0.0 0.0009350000000000001 0.04 AML other m 2009-11-22T03:34:55.93
IV.SMA1.EHZ. Md:0.0 11 END duration s
IV.FAGN.HHZ. Md:0.0 15 END duration s
IV.FIR.HHZ. Md:0.0 31 END duration s
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download