Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 03-12-2019 and time 12:37:06 (Italy) in region 3 km N Colonna (RM)

A magnitude ML 1.2 earthquake occured in region: 3 km N Colonna (RM), on

  • 03-12-2019 11:37:06 (UTC)
  • 03-12-2019 12:37:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8580, 12.7590 at 8 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
Colonna RM 3 4287 4287
San Cesareo RM 5 15153 19440
Gallicano nel Lazio RM 6 6334 25774
Monte Compatri RM 6 11978 37752
Monte Porzio Catone RM 6 8693 46445
Zagarolo RM 6 17843 64288
Rocca Priora RM 7 11962 76250
Frascati RM 9 22087 98337
Grottaferrata RM 11 20327 118664
Palestrina RM 11 21672 140336
Rocca di Papa RM 11 17034 157370
Castel San Pietro Romano RM 11 902 158272
San Gregorio da Sassola RM 12 1619 159891
Poli RM 12 2418 162309
Casape RM 12 744 163053
Tivoli RM 12 56533 219586
Marino RM 13 43026 262612
Labico RM 13 6379 268991
Ciampino RM 14 38412 307403
Cave RM 15 11287 318690
Castel Gandolfo RM 15 8997 327687
Lariano RM 16 13432 341119
Rocca di Cave RM 16 377 341496
Nemi RM 16 1943 343439
Valmontone RM 16 15959 359398
Castel Madama RM 16 7399 366797
Guidonia Montecelio RM 16 88673 455470
Capranica Prenestina RM 16 351 455821
Albano Laziale RM 17 41715 497536
Ariccia RM 17 19407 516943
Pisoniano RM 18 770 517713
Genzano di Roma RM 18 23970 541683
Genazzano RM 18 6036 547719
Artena RM 19 14276 561995
San Polo dei Cavalieri RM 19 2992 564987
Marcellina RM 19 7280 572267
San Vito Romano RM 19 3273 575540
Ciciliano RM 19 1336 576876
Velletri RM 19 53303 630179
Fonte Nuova RM 19 32562 662741
Sant'Angelo Romano RM 20 5018 667759

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km S of Tivoli (56533 inhabitants)
16 Km S of Guidonia Montecelio (88673 inhabitants)
19 Km N of Velletri (53303 inhabitants)
23 Km E of Roma (2864731 inhabitants)
30 Km NE of Pomezia (62966 inhabitants)
31 Km NE of Aprilia (73446 inhabitants)
44 Km E of Fiumicino (78395 inhabitants)
45 Km N of Latina (125985 inhabitants)
47 Km N of Anzio (54211 inhabitants)
76 Km SW of L'Aquila (69753 inhabitants)
79 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.2 2019-12-03
11:37:06		 41.8582 12.7592 8 2020-02-28
16:42:11		 Bollettino Sismico Italiano INGV 74319641
Reviewed
Rev100 		ML 1.2 2019-12-03
11:37:06		 41.8588 12.7563 8 2019-12-03
11:43:37		 Sala Sismica INGV-Roma 74278691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-03 11:37:06 ± 0.21
Latitude 41.8582 ± 0.0036
Longitude 12.7592 ± 0.0060
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 74319641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 510
Semi-minor axis of confidence ellipse (meter) 262
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 120
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.18886
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 74319641
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-04 17:49:50

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 74278691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-03 11:43:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERT.HHZ. 2019-12-03T11:37:14.15 0.3 undecidable manual S 61 20.9679 110 -0.23 71
IV.MTCE.HHZ. 2019-12-03T11:37:13.79 0.3 undecidable manual S 356 18.3705 113 0.26 71
IV.RCAV.EHZ. 2019-12-03T11:37:12.87 0.3 undecidable manual S 94 15.4734 117 0.25 71
IV.RDP.HHE. 2019-12-03T11:37:11.77 0.3 undecidable manual S 200 11.5773 124 0.31 71
IV.VIVA.HHZ. 2019-12-03T11:37:11.61 0.3 undecidable manual S 176 11.9769 123 0.03 75
IV.RCAV.EHZ. 2019-12-03T11:37:10.08 0.1 undecidable manual P 94 15.4734 117 0 100
IV.MTCE.HHZ. 2019-12-03T11:37:10.63 0.1 undecidable manual P 356 18.3705 113 0.02 99
IV.CERT.HHZ. 2019-12-03T11:37:10.97 0.1 undecidable manual P 61 20.9679 110 -0.13 96
IV.RMP.HHZ. 2019-12-03T11:37:09.96 0.3 undecidable manual S 222 6.993 138 -0.29 72
IV.RDP.HHE. 2019-12-03T11:37:09.46 0.1 undecidable manual P 200 11.5773 124 0.05 100
IV.VIVA.HHZ. 2019-12-03T11:37:09.46 0.1 undecidable manual P 176 11.9769 123 -0.02 100
IV.RMP.HHZ. 2019-12-03T11:37:08.59 0.1 undecidable manual P 222 6.993 138 -0.13 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HHE. ML:1.0 0.00007793460499999998 0.5184 AML other m 2019-12-03T11:37:19.50
IV.RMP.HHN. ML:2.0 0.0016840835 0.2432 AML other m 2019-12-03T11:37:10.45
IV.MTCE.HHN. ML:1.2 0.00012757342500000003 0.4608 AML other m 2019-12-03T11:37:14.28
IV.RCAV.EHE. ML:1.1 0.00012545345000000002 0.3456 AML other m 2019-12-03T11:37:14.29
IV.RCAV.EHN. ML:0.9 0.000084830425 0.2176 AML other m 2019-12-03T11:37:14.45
IV.CERT.HHN. ML:1.0 0.000076418155 0.4032 AML other m 2019-12-03T11:37:15.25
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