Earthquake with magnitude of ML 1.5 on date 21-11-2019 and time 01:23:42 (Italy) in region 1 km NW Tivoli (RM)

A magnitude ML 1.5 earthquake occured in region: 1 km NW Tivoli (RM), on

  • 21-11-2019 00:23:42 (UTC)
  • 21-11-2019 01:23:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.97, 12.79 at 15 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
Tivoli RM 1 56533 56533
Marcellina RM 6 7280 63813
San Polo dei Cavalieri RM 6 2992 66805
Castel Madama RM 6 7399 74204
Guidonia Montecelio RM 6 88673 162877
San Gregorio da Sassola RM 9 1619 164496
Vicovaro RM 10 4019 168515
Sant'Angelo Romano RM 10 5018 173533
Casape RM 11 744 174277
Palombara Sabina RM 11 13269 187546
Gallicano nel Lazio RM 11 6334 193880
Sambuci RM 12 925 194805
Ciciliano RM 12 1336 196141
Roccagiovine RM 13 263 196404
Poli RM 13 2418 198822
Mandela RM 13 917 199739
Saracinesco RM 14 185 199924
Fonte Nuova RM 15 32562 232486
Mentana RM 15 22921 255407
Licenza RM 15 1011 256418
Zagarolo RM 15 17843 274261
Pisoniano RM 15 770 275031
Colonna RM 16 4287 279318
Cerreto Laziale RM 16 1118 280436
Monteflavio RM 16 1348 281784
Castel San Pietro Romano RM 16 902 282686
Moricone RM 16 2650 285336
San Cesareo RM 17 15153 300489
Palestrina RM 17 21672 322161
Cineto Romano RM 17 601 322762
Anticoli Corrado RM 17 915 323677
Percile RM 17 255 323932
Monterotondo RM 17 40830 364762
Gerano RM 17 1263 366025
Roviano RM 18 1351 367376
Capranica Prenestina RM 18 351 367727
Monte Porzio Catone RM 18 8693 376420
Montorio Romano RM 19 1984 378404
Monte Compatri RM 19 11978 390382
San Vito Romano RM 19 3273 393655
Rocca di Cave RM 19 377 394032
Montelibretti RM 19 5323 399355
Marano Equo RM 19 779 400134
Rocca Canterano RM 19 196 400330
Rocca Priora RM 20 11962 412292
Riofreddo RM 20 781 413073
Agosta RM 20 1765 414838

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km NW of Tivoli (56533 inhabitants)
6 Km SE of Guidonia Montecelio (88673 inhabitants)
27 Km E of Roma (2864731 inhabitants)
32 Km N of Velletri (53303 inhabitants)
41 Km NE of Pomezia (62966 inhabitants)
44 Km N of Aprilia (73446 inhabitants)
51 Km E of Fiumicino (78395 inhabitants)
57 Km N of Latina (125985 inhabitants)
60 Km N of Anzio (54211 inhabitants)
66 Km SW of L'Aquila (69753 inhabitants)
67 Km S of Terni (111501 inhabitants)
75 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 1.5 2019-11-21
00:23:42
41.97 12.79 15 2019-11-21
00:46:00
Sala Sismica INGV-Roma 73940151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-21 00:23:42 ± 0.13
Latitude 41.97 ± 0.00
Longitude 12.79 ± 0.01
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73940151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 465
Semi-minor axis of confidence ellipse (meter) 214
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 470
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 26
Number of defining phases 26
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) 0.06385
Epicentral distance of station farthest from the epicenter (degree) 0.5369
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:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 73940151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-21 00:46:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2019-11-21T00:24:01.29 0.3 undecidable manual S 140 0.5369 95 0.22 67
IV.PTQR.HHZ. 2019-11-21T00:23:58.71 0.3 undecidable manual S 83 0.4542 96 0.1 70
IV.GUAR.HNE. 2019-11-21T00:23:57.30 0.3 undecidable manual S 114 0.4245 97 -0.45 64
IV.FIAM.HNZ. 2019-11-21T00:23:56.19 0.6 undecidable manual S 39 0.3813 98 -0.29 45
IT.CSO1.HGE. 2019-11-21T00:23:53.22 0.6 undecidable manual S 59 0.2545 104 0.45 45
IT.MMP1.HGE. 2019-11-21T00:23:53.49 0.3 undecidable manual S 353 0.2797 102 -0.01 72
IV.VIVA.HHZ. 2019-11-21T00:23:52.11 0.3 undecidable manual S 184 0.2212 107 0.28 70
IV.PTQR.HHZ. 2019-11-21T00:23:52.07 0.1 undecidable manual P 83 0.4542 96 0.21 90
IV.GIUL.HHZ. 2019-11-21T00:23:52.91 0.1 undecidable manual P 140 0.5369 95 -0.37 86
IV.MA9.HHE. 2019-11-21T00:23:51.51 0.6 undecidable manual S 206 0.2248 107 -0.41 46
IV.RDP.HHZ. 2019-11-21T00:23:51.94 0.3 undecidable manual S 196 0.2194 108 0.16 71
IV.CERT.HHZ. 2019-11-21T00:23:50.01 0.3 undecidable manual S 99 0.1421 122 0.32 71
IV.GUAR.HNE. 2019-11-21T00:23:50.92 0.6 undecidable manual P 114 0.4245 97 -0.44 43
IV.RCAV.EHZ. 2019-11-21T00:23:50.28 0.3 undecidable manual S 138 0.1682 116 -0.08 73
IV.FIAM.HNZ. 2019-11-21T00:23:50.37 0.6 undecidable manual P 39 0.3813 98 -0.26 45
IV.RMP.HHZ. 2019-11-21T00:23:50.72 1.0 undecidable manual S 203 0.1736 115 0.21 24
IT.MMP1.HGE. 2019-11-21T00:23:49.28 0.3 undecidable manual P 353 0.2797 102 0.37 67
IV.RDP.HHZ. 2019-11-21T00:23:48.13 0.1 undecidable manual P 196 0.2194 108 0.21 94
IT.CSO1.HGE. 2019-11-21T00:23:48.02 0.6 undecidable manual P 59 0.2545 104 -0.47 44
IV.MTCE.HHZ. 2019-11-21T00:23:47.82 0.3 undecidable manual S 324 0.0639 149 -0.24 73
IV.RMP.HHZ. 2019-11-21T00:23:47.13 0.1 undecidable manual P 203 0.1736 115 -0.06 99
IV.VIVA.HHZ. 2019-11-21T00:23:47.60 0.3 undecidable manual P 184 0.2212 107 -0.35 69
IV.MA9.HHE. 2019-11-21T00:23:47.89 0.1 undecidable manual P 206 0.2248 107 -0.11 97
IV.RCAV.EHZ. 2019-11-21T00:23:47.12 0.1 negative manual P 138 0.1682 116 0.02 100
IV.CERT.HHZ. 2019-11-21T00:23:46.98 0.1 undecidable manual P 99 0.1421 122 0.27 95
IV.MTCE.HHZ. 2019-11-21T00:23:45.82 0.1 positive manual P 324 0.0639 149 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:1.3 0.000208 1.66 AML other m 2019-11-21T00:23:47.96
IV.MTCE.HHN. ML:1 0.00010385 0.76 AML other m 2019-11-21T00:23:49.00
IV.CERT.HHN. ML:1.5 0.0002305 0.7 AML other m 2019-11-21T00:23:50.85
IV.RCAV.EHE. ML:1.3 0.00014 0.16 AML other m 2019-11-21T00:23:50.84
IV.RMP.HHE. ML:1.4 0.0001655 1.14 AML other m 2019-11-21T00:23:51.02
IV.RCAV.EHN. ML:1.4 0.0001625 0.32 AML other m 2019-11-21T00:23:51.31
IV.CERT.HHE. ML:1.5 0.0002545 0.54 AML other m 2019-11-21T00:23:51.11
IV.RDP.HHE. ML:1.9 0.000401 0.46 AML other m 2019-11-21T00:23:52.40
IV.RDP.HHN. ML:1.8 0.000304 0.66 AML other m 2019-11-21T00:23:52.81
IV.VIVA.HHE. ML:1.7 0.0002445 0.48 AML other m 2019-11-21T00:23:52.54
IV.RMP.HHN. ML:1.3 0.000139 1.36 AML other m 2019-11-21T00:23:53.08
IV.VIVA.HHN. ML:1.8 0.000309 0.78 AML other m 2019-11-21T00:23:57.43
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