INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.4 on date 07-02-2019 and time 22:08:15 (Italy) in region 7 km NW Colonna (RM)

A magnitude ML 1.4 earthquake occured in region: 7 km NW Colonna (RM), on

  • 07-02-2019 21:08:15 (UTC)
  • 07-02-2019 22:08:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.9, 12.72 at 10 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 7 4287 4287
Gallicano nel Lazio RM 9 6334 10621
Monte Porzio Catone RM 9 8693 19314
Monte Compatri RM 10 11978 31292
Tivoli RM 10 56533 87825
San Cesareo RM 10 15153 102978
Frascati RM 11 22087 125065
Zagarolo RM 11 17843 142908
Rocca Priora RM 12 11962 154870
Guidonia Montecelio RM 12 88673 243543
San Gregorio da Sassola RM 13 1619 245162
Grottaferrata RM 13 20327 265489
Casape RM 14 744 266233
Poli RM 14 2418 268651
Fonte Nuova RM 14 32562 301213
Ciampino RM 14 38412 339625
Rocca di Papa RM 15 17034 356659
Marino RM 15 43026 399685
Castel Madama RM 15 7399 407084
Palestrina RM 15 21672 428756
Castel San Pietro Romano RM 15 902 429658
Sant'Angelo Romano RM 16 5018 434676
Marcellina RM 16 7280 441956
San Polo dei Cavalieri RM 16 2992 444948
Mentana RM 17 22921 467869
Castel Gandolfo RM 18 8997 476866
Labico RM 18 6379 483245
Rocca di Cave RM 19 377 483622
Vicovaro RM 19 4019 487641
Cave RM 19 11287 498928
Albano Laziale RM 19 41715 540643
Capranica Prenestina RM 19 351 540994
Nemi RM 19 1943 542937
Palombara Sabina RM 19 13269 556206
Ciciliano RM 20 1336 557542
Pisoniano RM 20 770 558312
Monterotondo RM 20 40830 599142
Ariccia RM 20 19407 618549
Roma RM 20 2864731 3483280

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km SW of Tivoli (56533 inhabitants)
12 Km S of Guidonia Montecelio (88673 inhabitants)
20 Km E of Roma (2864731 inhabitants)
24 Km N of Velletri (53303 inhabitants)
31 Km NE of Pomezia (62966 inhabitants)
34 Km N of Aprilia (73446 inhabitants)
43 Km E of Fiumicino (78395 inhabitants)
50 Km NW of Latina (125985 inhabitants)
50 Km N of Anzio (54211 inhabitants)
74 Km S of Terni (111501 inhabitants)
75 Km SW of L'Aquila (69753 inhabitants)
77 Km SE of Viterbo (67173 inhabitants)
80 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 1.4 2019-02-07
21:08:15
41.9 12.72 10 2019-02-07
21:21:42
Sala Sismica INGV-Roma 65315411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-07 21:08:15 ± 0.21
Latitude 41.90 ± 0.00
Longitude 12.72 ± 0.01
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65315411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 579
Semi-minor axis of confidence ellipse (meter) 131
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 296
Circular confidence region, given by single value of horizontal uncertainty (meter) 580
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.21854
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 65315411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-07 21:21:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2019-02-07T21:08:43.85 1.0 undecidable manual S -0.01 0.48
IV.RCAV.EHZ. 2019-02-07T21:08:23.36 0.3 undecidable manual S 106 0.1709 119 0.05 75
IV.CERT.HHZ. 2019-02-07T21:08:23.91 0.3 undecidable manual S 74 0.1979 115 -0.34 71
IV.VIVA.HHZ. 2019-02-07T21:08:22.73 0.3 undecidable manual S 167 0.1493 122 0.14 74
IV.RDP.HHZ. 2019-02-07T21:08:22.11 0.3 undecidable manual S 185 0.1358 125 -0.04 77
IV.MTCE.HHZ. 2019-02-07T21:08:22.01 0.3 undecidable manual S 6 0.1277 126 0.12 74
IV.MA9.HHZ. 2019-02-07T21:08:21.65 0.3 undecidable manual S 201 0.1349 125 -0.49 70
IV.LAV9.HHZ. 2019-02-07T21:08:21.47 0.3 undecidable manual P 185 0.2185 50 0.42 71
IV.CERT.HHZ. 2019-02-07T21:08:20.56 0.1 undecidable manual P 74 0.1979 115 -0.11 99
IT.RMMM.HGE. 2019-02-07T21:08:20.72 0.1 undecidable manual P 278 0.2041 115 -0.08 99
IV.RMP.HHZ. 2019-02-07T21:08:20.90 0.3 undecidable manual S 191 0.0863 137 0.19 73
IV.RCAV.EHZ. 2019-02-07T21:08:20.17 0.3 undecidable manual P 106 0.1709 119 0.04 76
IV.VIVA.HHZ. 2019-02-07T21:08:19.89 0.3 undecidable manual P 167 0.1493 122 0.17 75
IV.RDP.HHZ. 2019-02-07T21:08:19.62 0.1 undecidable manual P 185 0.1358 125 0.15 100
IV.MTCE.HHZ. 2019-02-07T21:08:19.48 0.3 positive manual P 6 0.1277 126 0.16 75
IV.RMP.HHZ. 2019-02-07T21:08:18.86 0.3 undecidable manual P 191 0.0863 137 0.23 74
IV.MA9.HHZ. 2019-02-07T21:08:18.99 0.1 undecidable manual P 201 0.1349 125 -0.46 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VIVA.HHN. ML:1.9 0.000729 1.6 AML other m 2019-02-07T21:08:25.94
IV.VIVA.HHE. ML:1.6 0.0006155 0.38 AML other m 2019-02-07T21:08:29.44
IV.MTCE.HHE. ML:1.2 0.0001724276 0.3584 AML other m 2019-02-07T21:08:22.37
IV.MTCE.HHN. ML:1 0.000104018075 0.2176 AML other m 2019-02-07T21:08:23.21
IV.RCAV.EHE. ML:1.4 0.0002139407 0.0896 AML other m 2019-02-07T21:08:24.13
IV.RCAV.EHN. ML:1.6 0.0002988517 0.2176 AML other m 2019-02-07T21:08:23.67
IV.CERT.HHE. ML:1 7.5519195E-5 0.3328 AML other m 2019-02-07T21:08:24.65
IV.CERT.HHN. ML:1.3 0.00013325 0.28 AML other m 2019-02-07T21:08:25.35
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