Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 21-11-2019 and time 01:23:42 (Italy) in region 1 km SW Tivoli (RM)

A magnitude ML 1.4 earthquake occured in region: 1 km SW 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) 41.9590, 12.7940 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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
Castel Madama RM 7 7399 63932
San Polo dei Cavalieri RM 7 2992 66924
Guidonia Montecelio RM 7 88673 155597
Marcellina RM 7 7280 162877
San Gregorio da Sassola RM 8 1619 164496
Casape RM 10 744 165240
Gallicano nel Lazio RM 10 6334 171574
Vicovaro RM 10 4019 175593
Sant'Angelo Romano RM 11 5018 180611
Poli RM 11 2418 183029
Ciciliano RM 12 1336 184365
Palombara Sabina RM 12 13269 197634
Sambuci RM 12 925 198559
Roccagiovine RM 14 263 198822
Zagarolo RM 14 17843 216665
Mandela RM 14 917 217582
Colonna RM 14 4287 221869
Saracinesco RM 14 185 222054
Pisoniano RM 15 770 222824
Fonte Nuova RM 15 32562 255386
Castel San Pietro Romano RM 15 902 256288
San Cesareo RM 15 15153 271441
Palestrina RM 15 21672 293113
Mentana RM 15 22921 316034
Cerreto Laziale RM 16 1118 317152
Licenza RM 16 1011 318163
Gerano RM 17 1263 319426
Monte Porzio Catone RM 17 8693 328119
Capranica Prenestina RM 17 351 328470
Monte Compatri RM 17 11978 340448
Anticoli Corrado RM 17 915 341363
Monteflavio RM 17 1348 342711
Cineto Romano RM 18 601 343312
Rocca di Cave RM 18 377 343689
Moricone RM 18 2650 346339
San Vito Romano RM 18 3273 349612
Monterotondo RM 18 40830 390442
Percile RM 18 255 390697
Roviano RM 18 1351 392048
Rocca Priora RM 18 11962 404010
Marano Equo RM 19 779 404789
Rocca Canterano RM 19 196 404985
Frascati RM 19 22087 427072
Cave RM 19 11287 438359
Rocca Santo Stefano RM 20 975 439334
Montorio Romano RM 20 1984 441318

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km SW of Tivoli (56533 inhabitants)
7 Km SE of Guidonia Montecelio (88673 inhabitants)
27 Km E of Roma (2864731 inhabitants)
30 Km N of Velletri (53303 inhabitants)
40 Km NE of Pomezia (62966 inhabitants)
42 Km N of Aprilia (73446 inhabitants)
50 Km E of Fiumicino (78395 inhabitants)
55 Km N of Latina (125985 inhabitants)
58 Km N of Anzio (54211 inhabitants)
66 Km SW of L'Aquila (69753 inhabitants)
68 Km S of Terni (111501 inhabitants)
76 Km SE of Viterbo (67173 inhabitants)
84 Km E of Civitavecchia (52991 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.4 2019-11-21
00:23:42		 41.9587 12.7935 12 2020-02-28
16:42:08		 Bollettino Sismico Italiano INGV 73945921
Reviewed
Rev100 		ML 1.5 2019-11-21
00:23:42		 41.9712 12.7932 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 ± 0.04
Latitude 41.9587 ± 0.0018
Longitude 12.7935 ± 0.0024
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73945921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 230
Semi-minor axis of confidence ellipse (meter) 109
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 66
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 0.72485
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes 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

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 73945921
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-11-21 07:28:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.POFI.HNE. 2019-11-21T00:24:06.63 0.3 undecidable manual S 109 80.4639 91 -0.23 63
IV.LNSS.HNZ. 2019-11-21T00:24:05.05 0.3 undecidable manual S 16 74.2701 91 -0.16 65
IV.LRP.EHN. 2019-11-21T00:24:05.18 0.3 undecidable manual S 118 74.1702 91 0.01 66
IV.CESX.HHE. 2019-11-21T00:24:05.20 1.0 undecidable manual S 347 74.0703 91 0.05 22
IV.ARRO.EHZ. 2019-11-21T00:24:04.16 0.3 undecidable manual S 358 68.8755 91 0.4 62
IV.BARO.HNZ. 2019-11-21T00:24:04.15 0.3 undecidable manual S 298 68.9754 91 0.35 63
IV.VVLD.HHZ. 2019-11-21T00:24:03.71 0.6 undecidable manual S 98 69.1752 91 -0.14 44
IV.TOLF.HHN. 2019-11-21T00:24:02.75 0.6 undecidable manual S 280 66.378 91 -0.36 42
IV.GIUL.HHZ. 2019-11-21T00:24:01.29 0.3 undecidable manual S 139 58.5969 92 0.28 65
IV.LATB.EHZ. 2019-11-21T00:23:59.55 0.3 undecidable manual S 165 53.4021 92 -0.09 68
IV.PTQR.HHZ. 2019-11-21T00:23:58.71 0.3 undecidable manual S 82 50.5161 92 -0.16 68
IV.GUAR.HNE. 2019-11-21T00:23:57.71 0.6 undecidable manual S 113 46.5201 92 -0.1 46
IV.FIAM.HNZ. 2019-11-21T00:23:56.83 1.0 undecidable manual S 38 43.4232 92 -0.15 23
IV.POFI.HNE. 2019-11-21T00:23:56.69 0.1 undecidable manual P 109 80.4639 91 -0.05 87
IV.BARO.HNZ. 2019-11-21T00:23:55.12 1.0 undecidable manual P 298 68.9754 91 0.14 22
IV.CESX.HHE. 2019-11-21T00:23:55.98 0.3 undecidable manual P 347 74.0703 91 0.23 64
IV.LNSS.HNZ. 2019-11-21T00:23:55.78 1.0 undecidable manual P 16 74.2701 91 -0.01 22
IV.LRP.EHN. 2019-11-21T00:23:55.50 1.0 undecidable manual P 118 74.1702 91 -0.26 21
IV.ARRO.EHZ. 2019-11-21T00:23:55.18 0.3 undecidable manual P 358 68.8755 91 0.22 65
IV.VVLD.HHZ. 2019-11-21T00:23:54.96 0.1 positive manual P 98 69.1752 91 -0.05 89
IV.TOLF.HHN. 2019-11-21T00:23:54.21 0.3 undecidable manual P 280 66.378 91 -0.37 62
IT.CSO1.HGE. 2019-11-21T00:23:53.22 0.6 undecidable manual S 57 28.9488 94 0.1 47
IT.MMP1.HGE. 2019-11-21T00:23:53.87 0.3 undecidable manual S 353 32.4453 94 -0.18 69
IV.GIUL.HHZ. 2019-11-21T00:23:52.91 0.1 undecidable manual P 139 58.5969 92 -0.45 83
IV.LATB.EHZ. 2019-11-21T00:23:52.59 1.0 undecidable manual P 165 53.4021 92 0.02 23
IV.PTQR.HHZ. 2019-11-21T00:23:52.07 0.1 undecidable manual P 82 50.5161 92 -0.06 92
IV.MA9.HHE. 2019-11-21T00:23:51.51 0.6 undecidable manual S 208 23.754 96 -0.21 47
IV.FIAM.HNZ. 2019-11-21T00:23:51.03 0.6 undecidable manual P 38 43.4232 92 -0.01 47
IV.RDP.HHZ. 2019-11-21T00:23:51.72 0.3 undecidable manual S 197 23.0547 97 0.17 71
IV.GUAR.HNE. 2019-11-21T00:23:51.39 1.0 undecidable manual P 113 46.5201 92 -0.13 23
IV.VIVA.HHZ. 2019-11-21T00:23:51.79 0.3 undecidable manual S 185 23.1546 97 0.2 70
IV.CERT.HHZ. 2019-11-21T00:23:50.01 0.3 undecidable manual S 94 15.5733 108 0.42 68
IV.RCAV.EHZ. 2019-11-21T00:23:50.28 0.3 undecidable manual S 135 17.5713 103 0.17 71
IV.RMP.HHZ. 2019-11-21T00:23:50.32 0.3 undecidable manual S 205 17.9709 103 0.1 73
IT.MMP1.HGE. 2019-11-21T00:23:49.28 0.3 undecidable manual P 353 32.4453 94 -0.06 71
IT.CSO1.HGE. 2019-11-21T00:23:48.69 1.0 undecidable manual P 57 28.9488 94 -0.12 24
IV.RDP.HHZ. 2019-11-21T00:23:48.13 0.1 undecidable manual P 197 23.0547 97 0.23 93
IV.VIVA.HHZ. 2019-11-21T00:23:47.60 0.3 undecidable manual P 185 23.1546 97 -0.32 69
IV.MA9.HHE. 2019-11-21T00:23:47.89 0.1 undecidable manual P 208 23.754 96 -0.11 95
IV.RCAV.EHZ. 2019-11-21T00:23:47.12 0.1 negative manual P 135 17.5713 103 0.05 98
IV.MTCE.HHZ. 2019-11-21T00:23:47.82 0.3 undecidable manual S 329 8.2806 135 -0.12 74
IV.RMP.HHZ. 2019-11-21T00:23:47.13 0.1 undecidable manual P 205 17.9709 103 -0.01 98
IV.CERT.HHZ. 2019-11-21T00:23:46.98 0.1 undecidable manual P 94 15.5733 108 0.21 95
IV.MTCE.HHZ. 2019-11-21T00:23:45.82 0.1 positive manual P 329 8.2806 135 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RCAV.EHN. ML:1.3 0.0001625 0.32 AML other m 2019-11-21T00:23:51.31
IV.MTCE.HHN. ML:0.9 0.00010385 0.76 AML other m 2019-11-21T00:23:49.00
IV.CERT.HHN. ML:1.4 0.0002305 0.7 AML other m 2019-11-21T00:23:50.85
IV.RCAV.EHE. ML:1.3 0.00014000000000000001 0.16 AML other m 2019-11-21T00:23:50.84
IV.RMP.HHE. ML:1.3 0.0001655 1.14 AML other m 2019-11-21T00:23:51.02
IV.CERT.HHE. ML:1.5 0.0002545 0.54 AML other m 2019-11-21T00:23:51.11
IV.RDP.HHE. ML:1.8 0.00040100000000000004 0.46 AML other m 2019-11-21T00:23:52.40
IV.RDP.HHN. ML:1.7 0.000304 0.66 AML other m 2019-11-21T00:23:52.81
IV.VIVA.HHE. ML:1.6 0.0002445 0.48 AML other m 2019-11-21T00:23:52.54
IV.RMP.HHN. ML:1.3 0.00013900000000000002 1.36 AML other m 2019-11-21T00:23:53.08
IV.VIVA.HHN. ML:1.7 0.000309 0.78 AML other m 2019-11-21T00:23:57.43
IV.GIUL.HHE. ML:0.7 0.0000084347265 0.06 AML other m 2019-11-21T00:24:02.52
IV.GIUL.HHN. ML:1.1 0.000023855215 0.26 AML other m 2019-11-21T00:24:02.32
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download