Earthquake with magnitude of ML 0.9 on date 24-08-2019 and time 21:19:13 (UTC) in region 5 km N Colonna (RM)

A magnitude ML 0.9 earthquake occured in region: 5 km N Colonna (RM), on

  • 24-08-2019 21:19:13 (UTC)
  • 24-08-2019 23:19:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.87, 12.77 at 8 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 5 4287 4287
Gallicano nel Lazio RM 5 6334 10621
Zagarolo RM 6 17843 28464
San Cesareo RM 6 15153 43617
Monte Porzio Catone RM 8 8693 52310
Monte Compatri RM 8 11978 64288
Rocca Priora RM 9 11962 76250
San Gregorio da Sassola RM 10 1619 77869
Frascati RM 10 22087 99956
Tivoli RM 10 56533 156489
Casape RM 11 744 157233
Poli RM 11 2418 159651
Palestrina RM 11 21672 181323
Castel San Pietro Romano RM 11 902 182225
Grottaferrata RM 13 20327 202552
Rocca di Papa RM 13 17034 219586
Labico RM 14 6379 225965
Castel Madama RM 14 7399 233364
Guidonia Montecelio RM 15 88673 322037
Marino RM 15 43026 365063
Cave RM 15 11287 376350
Rocca di Cave RM 15 377 376727
Capranica Prenestina RM 16 351 377078
Ciampino RM 16 38412 415490
Pisoniano RM 16 770 416260
Valmontone RM 17 15959 432219
San Polo dei Cavalieri RM 17 2992 435211
Marcellina RM 17 7280 442491
Castel Gandolfo RM 17 8997 451488
Lariano RM 17 13432 464920
Ciciliano RM 18 1336 466256
Nemi RM 18 1943 468199
Genazzano RM 18 6036 474235
San Vito Romano RM 18 3273 477508
Fonte Nuova RM 18 32562 510070
Albano Laziale RM 18 41715 551785
Sant'Angelo Romano RM 18 5018 556803
Vicovaro RM 19 4019 560822
Ariccia RM 19 19407 580229
Sambuci RM 19 925 581154
Artena RM 19 14276 595430
Cerreto Laziale RM 20 1118 596548
Genzano di Roma RM 20 23970 620518

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km S of Tivoli (56533 inhabitants)
15 Km S of Guidonia Montecelio (88673 inhabitants)
21 Km N of Velletri (53303 inhabitants)
24 Km E of Roma (2864731 inhabitants)
32 Km NE of Pomezia (62966 inhabitants)
33 Km NE of Aprilia (73446 inhabitants)
45 Km E of Fiumicino (78395 inhabitants)
47 Km N of Latina (125985 inhabitants)
49 Km N of Anzio (54211 inhabitants)
74 Km SW of L'Aquila (69753 inhabitants)
77 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 0.9 2019-08-24
21:19:13
41.87 12.77 8 2019-08-24
21:27:31
Sala Sismica INGV-Roma 71776781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-24 21:19:13 ± 0.15
Latitude 41.87 ± 0.01
Longitude 12.77 ± 0.03
Depth (km) 8 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71776781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2808
Semi-minor axis of confidence ellipse (meter) 1071
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 2810
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48204
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 71776781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-24 21:27:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2019-08-24T21:19:42.52 3.0 undecidable manual S -0.59 0
IV.FIAM.HHZ. 2019-08-24T21:19:31.00 0.6 undecidable manual S 33 0.4712 50 0.41 57
IV.GIUL.HHZ. 2019-08-24T21:19:31.09 0.6 undecidable manual S 131 0.482 50 0.19 60
IV.GAVE.EHZ. 2019-08-24T21:19:30.50 3.0 undecidable manual P 0.26 0
IV.GIUL.HHZ. 2019-08-24T21:19:23.05 0.3 undecidable manual P 131 0.482 50 -0.51 83
IV.FIAM.HHZ. 2019-08-24T21:19:23.10 0.3 undecidable manual P 33 0.4712 50 -0.28 88
IV.VIVA.HHZ. 2019-08-24T21:19:19.28 0.6 undecidable manual S 179 0.1241 121 0.19 64
IV.RDP.HHZ. 2019-08-24T21:19:19.00 0.3 undecidable manual S 200 0.1214 121 -0.01 100
IV.SAMA.HHZ. 2019-08-24T21:19:17.76 0.6 undecidable manual P 234 0.1601 115 0.3 62
IV.RMP.HHZ. 2019-08-24T21:19:17.31 0.3 undecidable manual S 217 0.08 133 -0.4 93
IV.VIVA.HHZ. 2019-08-24T21:19:16.92 0.6 undecidable manual P 179 0.1241 121 0.18 64
IV.RDP.HHZ. 2019-08-24T21:19:16.96 0.3 undecidable manual P 200 0.1214 121 0.27 94
IV.RMP.HHZ. 2019-08-24T21:19:15.98 0.3 undecidable manual P 217 0.08 133 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VIVA.HHN. ML:1.7 0.000541 0.38 AML other m 2019-08-24T21:19:19.61
IV.VIVA.HHE. ML:1.6 0.0004405 0.2 AML other m 2019-08-24T21:19:22.19
IV.GIUL.HHE. ML:0.8 1.665E-5 0.66 AML other m 2019-08-24T21:19:32.35
IV.GIUL.HHN. ML:0.9 2.16E-5 0.84 AML other m 2019-08-24T21:19:32.46
IV.FIAM.HHN. ML:0.8 1.291E-5 0.86 AML other m 2019-08-24T21:19:33.58
IV.FIAM.HHE. ML:0.6 1.222222E-5 0.64 AML other m 2019-08-24T21:19:39.61
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