Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 02-07-2019 and time 02:03:17 (Italy) in region 4 km N Colonna (RM)

A magnitude ML 1.5 earthquake occured in region: 4 km N Colonna (RM), on

  • 02-07-2019 00:03:17 (UTC)
  • 02-07-2019 02:03:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8670, 12.7590 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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
Monte Porzio Catone RM 7 8693 34467
Zagarolo RM 7 17843 52310
Monte Compatri RM 7 11978 64288
Rocca Priora RM 8 11962 76250
Frascati RM 9 22087 98337
San Gregorio da Sassola RM 11 1619 99956
Palestrina RM 11 21672 121628
Grottaferrata RM 11 20327 141955
Tivoli RM 11 56533 198488
Poli RM 12 2418 200906
Casape RM 12 744 201650
Castel San Pietro Romano RM 12 902 202552
Rocca di Papa RM 12 17034 219586
Marino RM 14 43026 262612
Labico RM 14 6379 268991
Ciampino RM 15 38412 307403
Guidonia Montecelio RM 15 88673 396076
Castel Madama RM 15 7399 403475
Cave RM 15 11287 414762
Rocca di Cave RM 16 377 415139
Castel Gandolfo RM 16 8997 424136
Capranica Prenestina RM 16 351 424487
Lariano RM 17 13432 437919
Valmontone RM 17 15959 453878
Nemi RM 17 1943 455821
Pisoniano RM 17 770 456591
Albano Laziale RM 17 41715 498306
San Polo dei Cavalieri RM 18 2992 501298
Ariccia RM 18 19407 520705
Marcellina RM 18 7280 527985
Genazzano RM 18 6036 534021
Ciciliano RM 19 1336 535357
Fonte Nuova RM 19 32562 567919
Genzano di Roma RM 19 23970 591889
San Vito Romano RM 19 3273 595162
Sant'Angelo Romano RM 19 5018 600180
Artena RM 19 14276 614456
Vicovaro RM 20 4019 618475
Velletri RM 20 53303 671778

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km SW 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)
30 Km NE of Pomezia (62966 inhabitants)
32 Km N of Aprilia (73446 inhabitants)
44 Km E of Fiumicino (78395 inhabitants)
46 Km N of Latina (125985 inhabitants)
48 Km N of Anzio (54211 inhabitants)
76 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2019-07-02
00:03:17		 41.8668 12.7587 10 2019-11-13
14:30:53		 Bollettino Sismico Italiano INGV 70187231
Reviewed
Rev100 		ML 1.6 2019-07-02
00:03:17		 41.8708 12.7668 8 2019-07-02
00:06:57		 Sala Sismica INGV-Roma 70109551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-02 00:03:17 ± 0.08
Latitude 41.8668 ± 0.0036
Longitude 12.7587 ± 0.0060
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 70187231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 535
Semi-minor axis of confidence ellipse (meter) 244
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) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
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) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.48204
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 70109551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-02 00:06:57

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 70187231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-07-04 08:46:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2019-07-02T00:03:34.43 0.3 undecidable manual S 130 53.502 50 0.38 66
IV.FIAM.HNN. 2019-07-02T00:03:34.38 0.6 undecidable manual S 33 53.4021 50 0.34 45
IV.LATB.EHZ. 2019-07-02T00:03:31.47 0.6 undecidable manual S 158 44.7219 50 -0.24 46
IV.GIUL.HHZ. 2019-07-02T00:03:26.70 0.1 undecidable manual P 130 53.502 50 -0.2 92
IV.FIAM.HNN. 2019-07-02T00:03:26.63 0.3 undecidable manual P 33 53.4021 50 -0.26 68
IV.LAV9.HNZ. 2019-07-02T00:03:25.69 0.3 undecidable manual S 193 21.5673 115 0.29 72
IV.LATB.EHZ. 2019-07-02T00:03:25.32 0.1 undecidable manual P 158 44.7219 50 -0.23 93
IV.MTCE.HHZ. 2019-07-02T00:03:24.10 0.3 undecidable manual S 356 17.3715 120 -0.02 76
IV.CERT.HHZ. 2019-07-02T00:03:24.91 0.3 undecidable manual S 64 20.5683 116 -0.19 73
IV.VIVA.HHZ. 2019-07-02T00:03:23.17 0.3 undecidable manual S 176 12.9759 128 0.31 72
IV.RCAV.EHZ. 2019-07-02T00:03:23.49 0.3 undecidable manual S 98 15.5733 123 -0.1 75
IV.MA9.HHN. 2019-07-02T00:03:22.68 0.3 undecidable manual S 217 13.5753 127 -0.34 72
IV.RDP.HHZ. 2019-07-02T00:03:22.53 0.3 undecidable manual S 199 12.4764 129 -0.19 74
IV.RMP.HHZ. 2019-07-02T00:03:21.30 0.3 undecidable manual S 217 7.7811 143 -0.28 73
IV.MTCE.HHZ. 2019-07-02T00:03:21.37 0.1 positive manual P 356 17.3715 120 0.2 98
IV.CERT.HHZ. 2019-07-02T00:03:21.83 0.1 positive manual P 64 20.5683 116 0.1 99
IV.LAV9.HNZ. 2019-07-02T00:03:21.73 0.3 undecidable manual P 193 21.5673 115 -0.18 73
IV.VIVA.HHZ. 2019-07-02T00:03:20.72 0.1 undecidable manual P 176 12.9759 128 0.28 97
IV.MA9.HHN. 2019-07-02T00:03:20.28 1.0 undecidable manual P 217 13.5753 127 -0.25 24
IV.RDP.HHZ. 2019-07-02T00:03:20.64 0.1 undecidable manual P 199 12.4764 129 0.28 97
IV.RCAV.EHZ. 2019-07-02T00:03:20.72 0.1 undecidable manual P 98 15.5733 123 -0.14 99
IV.RMP.HHZ. 2019-07-02T00:03:19.87 0.1 undecidable manual P 217 7.7811 143 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VIVA.HHN. ML:1.8 0.0006670000000000001 0.22 AML other m 2019-07-02T00:03:27.49
IV.RMP.HHE. ML:1.8 0.0009955 0.44 AML other m 2019-07-02T00:03:21.85
IV.RDP.HHE. ML:1.7 0.000641 0.4 AML other m 2019-07-02T00:03:24.01
IV.VIVA.HHE. ML:1.8 0.0007305 0.26 AML other m 2019-07-02T00:03:24.27
IV.MTCE.HHE. ML:1.0 0.00007670000000000001 0.48 AML other m 2019-07-02T00:03:24.69
IV.RDP.HHN. ML:1.9 0.0008700000000000001 0.3 AML other m 2019-07-02T00:03:24.60
IV.MTCE.HHN. ML:1.4 0.00020950000000000002 0.32 AML other m 2019-07-02T00:03:24.56
IV.CERT.HHN. ML:1.2 0.000107 0.26 AML other m 2019-07-02T00:03:25.69
IV.CERT.HHE. ML:1.2 0.0000993 1.12 AML other m 2019-07-02T00:03:25.80
IV.GIUL.HHE. ML:0.6 0.0000102453405 0.24 AML other m 2019-07-02T00:03:38.57
IV.GIUL.HHN. ML:0.8 0.000014792917499999998 0.24 AML other m 2019-07-02T00:03:36.30
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