Earthquake with magnitude of ML 1.6 on date 09-07-2019 and time 04:52:00 (Italy) in region 4 km N Colonna (RM)

A magnitude ML 1.6 earthquake occured in region: 4 km N Colonna (RM), on

  • 09-07-2019 02:52:00 (UTC)
  • 09-07-2019 04:52:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.87, 12.76 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 4 4287 4287
Gallicano nel Lazio RM 5 6334 10621
San Cesareo RM 6 15153 25774
Zagarolo RM 6 17843 43617
Monte Compatri RM 7 11978 55595
Monte Porzio Catone RM 7 8693 64288
Rocca Priora RM 8 11962 76250
Frascati RM 10 22087 98337
San Gregorio da Sassola RM 11 1619 99956
Palestrina RM 11 21672 121628
Poli RM 11 2418 124046
Casape RM 11 744 124790
Castel San Pietro Romano RM 11 902 125692
Tivoli RM 11 56533 182225
Grottaferrata RM 12 20327 202552
Rocca di Papa RM 13 17034 219586
Labico RM 14 6379 225965
Marino RM 14 43026 268991
Castel Madama RM 15 7399 276390
Cave RM 15 11287 287677
Ciampino RM 15 38412 326089
Rocca di Cave RM 15 377 326466
Guidonia Montecelio RM 15 88673 415139
Capranica Prenestina RM 16 351 415490
Valmontone RM 16 15959 431449
Castel Gandolfo RM 16 8997 440446
Lariano RM 16 13432 453878
Nemi RM 17 1943 455821
Pisoniano RM 17 770 456591
San Polo dei Cavalieri RM 17 2992 459583
Albano Laziale RM 18 41715 501298
Genazzano RM 18 6036 507334
Marcellina RM 18 7280 514614
Ariccia RM 18 19407 534021
Ciciliano RM 18 1336 535357
San Vito Romano RM 18 3273 538630
Genzano di Roma RM 19 23970 562600
Fonte Nuova RM 19 32562 595162
Artena RM 19 14276 609438
Sant'Angelo Romano RM 19 5018 614456
Vicovaro RM 20 4019 618475
Sambuci RM 20 925 619400
Velletri RM 20 53303 672703

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km S of Tivoli (56533 inhabitants)
15 Km S of Guidonia Montecelio (88673 inhabitants)
20 Km N of Velletri (53303 inhabitants)
23 Km E of Roma (2864731 inhabitants)
31 Km NE of Pomezia (62966 inhabitants)
32 Km NE of Aprilia (73446 inhabitants)
45 Km E of Fiumicino (78395 inhabitants)
46 Km N of Latina (125985 inhabitants)
48 Km N of Anzio (54211 inhabitants)
75 Km SW of L'Aquila (69753 inhabitants)
78 Km S of Terni (111501 inhabitants)
82 Km SE of Viterbo (67173 inhabitants)
84 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 1.6 2019-07-09
02:52:00
41.87 12.76 10 2019-07-09
03:00:12
Sala Sismica INGV-Roma 70389601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-09 02:52:00 ± 0.08
Latitude 41.87 ± 0.00
Longitude 12.76 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70389601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 600
Semi-minor axis of confidence ellipse (meter) 308
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 289
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.47844
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 70389601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-09 03:00:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2019-07-09T02:52:17.33 0.6 undecidable manual S 33 0.4784 50 0.26 44
IV.LATB.EHZ. 2019-07-09T02:52:14.66 0.6 undecidable manual S 158 0.4011 50 -0.13 46
IV.FIAM.HHZ. 2019-07-09T02:52:10.05 0.6 undecidable manual P 33 0.4784 50 0.08 46
IV.GIUL.HHZ. 2019-07-09T02:52:09.72 0.3 undecidable manual P 130 0.4784 50 -0.25 66
IV.LATB.EHZ. 2019-07-09T02:52:08.23 0.3 undecidable manual P 158 0.4011 50 -0.42 65
IV.LAV9.HHZ. 2019-07-09T02:52:08.75 0.6 undecidable manual S 195 0.1961 115 0.14 48
IT.MMP1.HGE. 2019-07-09T02:52:08.71 0.6 undecidable manual P 358 0.3822 50 0.39 44
IV.MTCE.HHZ. 2019-07-09T02:52:07.18 0.6 undecidable manual S 354 0.1565 121 -0.1 48
IV.CERT.HHZ. 2019-07-09T02:52:07.80 0.3 undecidable manual S 63 0.1808 117 -0.31 69
IV.VIVA.HHZ. 2019-07-09T02:52:06.19 0.3 undecidable manual S 178 0.1169 128 0.16 72
IV.MA9.HHE. 2019-07-09T02:52:06.13 0.3 undecidable manual S 219 0.125 127 -0.15 72
IV.SAMA.EHE. 2019-07-09T02:52:06.92 0.6 undecidable manual S 236 0.1547 121 -0.31 46
IV.LAV9.HHZ. 2019-07-09T02:52:05.41 0.3 undecidable manual P 195 0.1961 115 0.32 69
IV.VIVA.HHZ. 2019-07-09T02:52:04.09 0.3 undecidable manual P 178 0.1169 128 0.49 67
IV.CERT.HHZ. 2019-07-09T02:52:04.71 0.3 undecidable manual P 63 0.1808 117 -0.09 73
IV.RDP.HHZ. 2019-07-09T02:52:04.08 0.6 undecidable manual P 201 0.1142 129 0.53 44
IV.SAMA.EHE. 2019-07-09T02:52:04.19 0.3 undecidable manual P 236 0.1547 121 -0.1 73
IV.RCAV.EHZ. 2019-07-09T02:52:04.15 0.6 undecidable manual P 98 0.1358 124 0.22 47
IV.RMP.HHE. 2019-07-09T02:52:04.65 0.3 undecidable manual S 220 0.0728 142 -0.17 73
IV.MTCE.HHZ. 2019-07-09T02:52:04.36 0.3 undecidable manual P 354 0.1565 121 0.05 73
IV.MA9.HHE. 2019-07-09T02:52:03.44 0.6 undecidable manual P 219 0.125 127 -0.3 47
IV.RMP.HHE. 2019-07-09T02:52:02.88 0.1 undecidable manual P 220 0.0728 142 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LAV9.HHN. ML:1.9 0.000491 0.34 AML other m 2019-07-09T02:52:12.00
IV.VIVA.HHN. ML:2 0.001016 0.32 AML other m 2019-07-09T02:52:06.90
IV.RCAV.EHE. ML:1.3 0.0001875 0.82 AML other m 2019-07-09T02:52:07.27
IV.RCAV.EHN. ML:1.4 0.000211 0.44 AML other m 2019-07-09T02:52:07.50
IV.RDP.HHN. ML:1.9 0.000838 0.6 AML other m 2019-07-09T02:52:07.63
IV.VIVA.HHE. ML:2 0.0011285 0.34 AML other m 2019-07-09T02:52:07.83
IV.MTCE.HHE. ML:1.3 0.000161 0.26 AML other m 2019-07-09T02:52:07.82
IV.MTCE.HHN. ML:1.4 0.0001885 0.84 AML other m 2019-07-09T02:52:08.52
IV.LAV9.HHE. ML:1.9 0.000522 0.4 AML other m 2019-07-09T02:52:09.61
IV.FIAM.HHE. ML:0.8 1.56E-5 0.72 AML other m 2019-07-09T02:52:19.51
IV.LAV9.HNE. ML:1.9 0.0005090751 0.3904 AML other m 2019-07-09T02:52:09.41
IV.LAV9.HNN. ML:1.7 0.0003350427 0.2608 AML other m 2019-07-09T02:52:09.27
IV.LATB.EHN. ML:0.9 2.3090025E-5 2.3584 AML other m 2019-07-09T02:52:16.07
IV.FIAM.HHN. ML:0.8 1.6050285E-5 2.0816 AML other m 2019-07-09T02:52:18.54
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