Earthquake with magnitude of M 0.0 on date 21-02-2011 and time 02:46:24 (Italy) in region 2 km W Frascati (RM)

A magnitude M 0.0 earthquake occured in region: 2 km W Frascati (RM), on

  • 21-02-2011 01:46:24 (UTC)
  • 21-02-2011 02:46:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8150, 12.6600 at 6 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
Frascati RM 2 22087 22087
Grottaferrata RM 3 20327 42414
Monte Porzio Catone RM 5 8693 51107
Marino RM 5 43026 94133
Ciampino RM 5 38412 132545
Monte Compatri RM 7 11978 144523
Rocca di Papa RM 7 17034 161557
Castel Gandolfo RM 8 8997 170554
Colonna RM 8 4287 174841
Rocca Priora RM 9 11962 186803
Albano Laziale RM 9 41715 228518
Ariccia RM 11 19407 247925
Nemi RM 11 1943 249868
San Cesareo RM 12 15153 265021
Genzano di Roma RM 12 23970 288991
Zagarolo RM 14 17843 306834
Gallicano nel Lazio RM 15 6334 313168
Lanuvio RM 15 13632 326800
Roma RM 17 2864731 3191531
Velletri RM 17 53303 3244834
Lariano RM 17 13432 3258266
Labico RM 19 6379 3264645
Palestrina RM 19 21672 3286317
Castel San Pietro Romano RM 20 902 3287219

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SE of Roma (2864731 inhabitants)
17 Km NW of Velletri (53303 inhabitants)
20 Km SW of Tivoli (56533 inhabitants)
21 Km NE of Pomezia (62966 inhabitants)
21 Km S of Guidonia Montecelio (88673 inhabitants)
25 Km N of Aprilia (73446 inhabitants)
35 Km E of Fiumicino (78395 inhabitants)
41 Km N of Anzio (54211 inhabitants)
44 Km NW of Latina (125985 inhabitants)
78 Km E of Civitavecchia (52991 inhabitants)
81 Km SE of Viterbo (67173 inhabitants)
83 Km S of Terni (111501 inhabitants)
85 Km SW 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
M 0.0 2011-02-21
01:46:24
41.815 12.66 6 2014-10-15
07:39:12
Fonte esterna non nota 1175249
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-02-21 01:46:24
Latitude 41.8150
Longitude 12.6600
Depth (km) 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> UNKNOWN
Event type earthquake
Origin ID 1175249

Uncertainty

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

Quality

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 3
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 7
Number of stations from which data was used for origin computation 3
Magnitude information

M:0.0

Field Value
Value 0.0
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 1175249
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.MA9.HHZ. 2011-02-21T01:46:27.52 0.1 undecidable manual Pg 0 0 0
IV.RDP.HHZ. 2011-02-21T01:46:27.71 0.3 undecidable manual Pg 0 0 0
IV.RMP.HHE. 2011-02-21T01:46:26.21 0.3 undecidable manual Pg 0 0 0
IV.SBPO.HHZ. 2011-02-21T01:45:52.97 10.0 undecidable manual Pg 0 0 0
IV.FIR.HHE. 2011-02-21T01:45:51.24 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHE. 2011-02-21T01:45:36.54 10.0 undecidable manual Sg 0 0 0
IV.STR4.BHZ. 2011-02-21T01:45:34.24 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHE. 2011-02-21T01:45:33.24 10.0 undecidable manual Pg 0 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RMP.HHN. ML:0.0 0.00023999999999999998 0.38 AML other m 2011-02-21T01:46:26.21
IV.RMP.HHE. Md:0.0 20.5 END duration s
IV.MA9.HHN. ML:0.0 0.00010499999999999999 0.56 AML other m 2011-02-21T01:46:27.52
IV.MA9.HHE. ML:0.0 0.00011 0.54 AML other m 2011-02-21T01:46:27.52
IV.RDP.HHN. ML:0.0 0.0005200000000000001 0.32 AML other m 2011-02-21T01:46:27.71
IV.RDP.HHE. ML:0.0 0.000495 0.48 AML other m 2011-02-21T01:46:27.71
IV.STR3.BHE. Md:0.0 29 END duration s
IV.STR4.BHZ. Md:0.0 31 END duration s
IV.FIR.HHE. Md:0.0 16 END duration s
IV.SBPO.HHZ. Md:0.0 43 END duration s
IV.MA9.HHZ. Md:0.0 19.5 END duration s
IV.RDP.HHZ. Md:0.0 5.3 END duration s
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download