Earthquake with magnitude of ML 1.2 on date 11-03-2019 and time 06:19:09 (Italy) in region 2 km N Colonna (RM)

A magnitude ML 1.2 earthquake occured in region: 2 km N Colonna (RM), on

  • 11-03-2019 05:19:09 (UTC)
  • 11-03-2019 06:19:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.85, 12.75 at 4 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Colonna RM 2 4287 4287
Monte Porzio Catone RM 5 8693 12980
Monte Compatri RM 5 11978 24958
San Cesareo RM 6 15153 40111
Rocca Priora RM 7 11962 52073
Gallicano nel Lazio RM 7 6334 58407
Zagarolo RM 7 17843 76250
Frascati RM 8 22087 98337
Grottaferrata RM 10 20327 118664
Rocca di Papa RM 11 17034 135698
Marino RM 12 43026 178724
Palestrina RM 12 21672 200396
Castel San Pietro Romano RM 12 902 201298
San Gregorio da Sassola RM 13 1619 202917
Poli RM 13 2418 205335
Casape RM 13 744 206079
Tivoli RM 13 56533 262612
Ciampino RM 13 38412 301024
Labico RM 14 6379 307403
Castel Gandolfo RM 14 8997 316400
Nemi RM 15 1943 318343
Lariano RM 16 13432 331775
Albano Laziale RM 16 41715 373490
Cave RM 16 11287 384777
Ariccia RM 16 19407 404184
Valmontone RM 16 15959 420143
Rocca di Cave RM 16 377 420520
Guidonia Montecelio RM 17 88673 509193
Genzano di Roma RM 17 23970 533163
Capranica Prenestina RM 17 351 533514
Castel Madama RM 17 7399 540913
Velletri RM 19 53303 594216
Pisoniano RM 19 770 594986
Genazzano RM 19 6036 601022
Artena RM 19 14276 615298
Fonte Nuova RM 19 32562 647860
San Polo dei Cavalieri RM 19 2992 650852
Lanuvio RM 20 13632 664484
Marcellina RM 20 7280 671764
San Vito Romano RM 20 3273 675037

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Tivoli (56533 inhabitants)
17 Km S of Guidonia Montecelio (88673 inhabitants)
19 Km N of Velletri (53303 inhabitants)
22 Km E of Roma (2864731 inhabitants)
29 Km NE of Pomezia (62966 inhabitants)
30 Km N of Aprilia (73446 inhabitants)
43 Km E of Fiumicino (78395 inhabitants)
45 Km N of Latina (125985 inhabitants)
46 Km N of Anzio (54211 inhabitants)
77 Km SW of L'Aquila (69753 inhabitants)
79 Km S of Terni (111501 inhabitants)
82 Km SE of Viterbo (67173 inhabitants)
83 Km E of Civitavecchia (52991 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.2 2019-03-11
05:19:09
41.85 12.75 4 2019-03-11
05:23:20
Sala Sismica INGV-Roma 66386921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-11 05:19:09 ± 0.13
Latitude 41.85 ± 0.00
Longitude 12.75 ± 0.00
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66386921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 310
Semi-minor axis of confidence ellipse (meter) 231
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 120
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
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) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.16997
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 66386921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-11 05:23:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTCE.HHZ. 2019-03-11T05:19:16.19 0.1 undecidable manual S 358 0.17 103 0.05 97
IV.RCAV.EHZ. 2019-03-11T05:19:15.17 0.1 undecidable manual S 92 0.1466 105 -0.09 97
IV.RDP.HHZ. 2019-03-11T05:19:13.54 0.1 undecidable manual S 197 0.0971 112 0.1 97
IV.MTCE.HHZ. 2019-03-11T05:19:13.22 0.3 negative manual P 358 0.17 103 -0.08 72
IV.RCAV.EHZ. 2019-03-11T05:19:12.94 0.1 undecidable manual P 92 0.1466 105 0.15 96
IV.RDP.HHZ. 2019-03-11T05:19:11.64 0.1 undecidable manual P 197 0.0971 112 -0.1 97
IV.RMP.HHZ. 2019-03-11T05:19:11.98 0.1 undecidable manual S 220 0.054 125 -0.01 100
IV.RMP.HHZ. 2019-03-11T05:19:10.86 0.1 negative manual P 220 0.054 125 -0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RMP.HHE. ML:0 0.00258 0.88 AML other m 2019-03-11T05:19:12.57
IV.RMP.HHN. ML:0 0.00222 1.46 AML other m 2019-03-11T05:19:12.14
IV.RDP.HHE. ML:2.1 0.00185 1.74 AML other m 2019-03-11T05:19:15.11
IV.RDP.HHN. ML:2.1 0.002225 0.22 AML other m 2019-03-11T05:19:15.34
IV.RCAV.EHN. ML:1.2 0.0001705 0.48 AML other m 2019-03-11T05:19:16.19
IV.MTCE.HHN. ML:1.6 0.000331 0.44 AML other m 2019-03-11T05:19:16.62
IV.MTCE.HHE. ML:1.1 0.0001145 0.36 AML other m 2019-03-11T05:19:17.75
IV.RCAV.EHE. ML:1.1 0.0001224 0.48 AML other m 2019-03-11T05:19:18.36
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download