Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 16-07-2019 and time 03:24:35 (Italy) in region 5 km N Colonna (RM)

A magnitude ML 1.1 earthquake occured in region: 5 km N Colonna (RM), on

  • 16-07-2019 01:24:35 (UTC)
  • 16-07-2019 03:24:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8820, 12.7540 at 6 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 5 4287 4287
Gallicano nel Lazio RM 6 6334 10621
San Cesareo RM 8 15153 25774
Zagarolo RM 8 17843 43617
Monte Porzio Catone RM 8 8693 52310
Monte Compatri RM 8 11978 64288
Rocca Priora RM 10 11962 76250
Tivoli RM 10 56533 132783
Frascati RM 10 22087 154870
San Gregorio da Sassola RM 11 1619 156489
Casape RM 11 744 157233
Poli RM 12 2418 159651
Palestrina RM 12 21672 181323
Castel San Pietro Romano RM 12 902 182225
Grottaferrata RM 13 20327 202552
Guidonia Montecelio RM 13 88673 291225
Rocca di Papa RM 14 17034 308259
Castel Madama RM 14 7399 315658
Marino RM 15 43026 358684
Ciampino RM 15 38412 397096
Labico RM 15 6379 403475
San Polo dei Cavalieri RM 16 2992 406467
Marcellina RM 16 7280 413747
Cave RM 16 11287 425034
Rocca di Cave RM 16 377 425411
Capranica Prenestina RM 17 351 425762
Fonte Nuova RM 17 32562 458324
Castel Gandolfo RM 17 8997 467321
Pisoniano RM 17 770 468091
Sant'Angelo Romano RM 17 5018 473109
Ciciliano RM 18 1336 474445
Valmontone RM 18 15959 490404
Nemi RM 18 1943 492347
Lariano RM 18 13432 505779
Vicovaro RM 19 4019 509798
Albano Laziale RM 19 41715 551513
Genazzano RM 19 6036 557549
San Vito Romano RM 19 3273 560822
Ariccia RM 19 19407 580229
Sambuci RM 19 925 581154
Mentana RM 20 22921 604075
Genzano di Roma RM 20 23970 628045

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km SW of Tivoli (56533 inhabitants)
13 Km S of Guidonia Montecelio (88673 inhabitants)
22 Km N of Velletri (53303 inhabitants)
22 Km E of Roma (2864731 inhabitants)
32 Km NE of Pomezia (62966 inhabitants)
33 Km N of Aprilia (73446 inhabitants)
45 Km E of Fiumicino (78395 inhabitants)
48 Km N of Latina (125985 inhabitants)
49 Km N of Anzio (54211 inhabitants)
75 Km SW of L'Aquila (69753 inhabitants)
76 Km S of Terni (111501 inhabitants)
80 Km SE of Viterbo (67173 inhabitants)
83 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 1.1 2019-07-16
01:24:35		 41.8825 12.7545 6 2019-11-13
14:31:03		 Bollettino Sismico Italiano INGV 72589271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-16 01:24:35 ± 0.29
Latitude 41.8825 ± 0.0045
Longitude 12.7545 ± 0.0085
Depth (km) 6 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72589271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 639
Semi-minor axis of confidence ellipse (meter) 374
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 10
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.18166
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 72589271
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-20 15:59:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2019-07-16T01:25:40.46 3.0 undecidable manual Sg 13.16 0
IV.SIRI.HHZ. 2019-07-16T01:25:12.99 3.0 positive manual Pn -0.29 0
IV.PTRJ.HNZ. 2019-07-16T01:25:01.51 3.0 undecidable manual Pg 4.72 0
IV.PAOL.HHZ. 2019-07-16T01:25:01.32 3.0 undecidable manual Pg 3.71 0
IV.CFMN.HHZ. 2019-07-16T01:24:48.34 3.0 negative manual Pn -4.79 0
IV.RM33.EHZ. 2019-07-16T01:24:43.80 3.0 undecidable manual Pn -0.92 0
IV.MMO1.EHZ. 2019-07-16T01:24:43.38 3.0 undecidable manual Pn -3.97 0
IV.SMA1.EHZ. 2019-07-16T01:24:43.49 3.0 negative manual Pn -2.84 0
IV.ARRO.EHZ. 2019-07-16T01:24:43.98 3.0 negative manual Pn 3.4 0
IV.CERT.HHZ. 2019-07-16T01:24:42.35 0.6 undecidable manual S 68 20.1687 106 -0.02 50
IV.RCAV.EHZ. 2019-07-16T01:24:41.10 0.6 undecidable manual S 104 16.2726 110 0.02 50
IV.GAVE.EHZ. 2019-07-16T01:24:41.75 3.0 negative manual Pn -0.54 0
IV.LNSS.HHZ. 2019-07-16T01:24:41.81 3.0 positive manual Pn -1.54 0
IV.MTCE.HHZ. 2019-07-16T01:24:41.21 0.6 undecidable manual S 356 15.5733 111 0.34 47
IV.VIVA.HHZ. 2019-07-16T01:24:40.81 0.6 undecidable manual S 175 14.7741 112 0.22 48
IV.VIVA.HHZ. 2019-07-16T01:24:38.55 0.3 undecidable manual P 175 14.7741 112 0.29 71
IV.MTCE.HHZ. 2019-07-16T01:24:38.41 0.1 undecidable manual P 356 15.5733 111 -0.01 100
IV.RCAV.EHZ. 2019-07-16T01:24:38.71 0.3 undecidable manual P 104 16.2726 110 0.17 73
IV.RMP.HHZ. 2019-07-16T01:24:38.68 0.3 undecidable manual S 209 8.9799 123 -0.14 74
IV.CERT.HHZ. 2019-07-16T01:24:38.97 0.1 undecidable manual P 68 20.1687 106 -0.32 93
IV.RMP.HHZ. 2019-07-16T01:24:37.07 0.1 undecidable manual P 209 8.9799 123 -0.17 98
IV.RIBO.EHZ.01 2019-07-16T01:24:27.65 3.0 positive manual P 0.65 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RMP.HHN. ML:1.4 0.00038316825 0.42 AML other m 2019-07-16T01:24:38.99
IV.RMP.HHE. ML:1.1 0.00020230695 0.16 AML other m 2019-07-16T01:24:41.59
IV.MTCE.HHN. ML:0.8 0.000066227075 0.26 AML other m 2019-07-16T01:24:41.92
IV.VIVA.HHN. ML:1.2 0.000154646185 0.22 AML other m 2019-07-16T01:24:42.64
IV.VIVA.HHE. ML:1.1 0.0001438975 0.32 AML other m 2019-07-16T01:24:52.06
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