Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 11-03-2019 and time 06:19:08 (Italy) in region 1 km N Colonna (RM)

A magnitude ML 1.8 earthquake occured in region: 1 km N Colonna (RM), on

  • 11-03-2019 05:19:08 (UTC)
  • 11-03-2019 06:19:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8430, 12.7490 at 9 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 1 4287 4287
Monte Compatri RM 4 11978 16265
Monte Porzio Catone RM 4 8693 24958
San Cesareo RM 5 15153 40111
Rocca Priora RM 6 11962 52073
Zagarolo RM 7 17843 69916
Gallicano nel Lazio RM 7 6334 76250
Frascati RM 7 22087 98337
Grottaferrata RM 9 20327 118664
Rocca di Papa RM 10 17034 135698
Marino RM 11 43026 178724
Palestrina RM 12 21672 200396
Castel San Pietro Romano RM 12 902 201298
Ciampino RM 13 38412 239710
Labico RM 13 6379 246089
Poli RM 13 2418 248507
San Gregorio da Sassola RM 13 1619 250126
Castel Gandolfo RM 13 8997 259123
Casape RM 14 744 259867
Nemi RM 14 1943 261810
Tivoli RM 14 56533 318343
Lariano RM 15 13432 331775
Albano Laziale RM 15 41715 373490
Ariccia RM 15 19407 392897
Cave RM 15 11287 404184
Genzano di Roma RM 16 23970 428154
Valmontone RM 16 15959 444113
Rocca di Cave RM 16 377 444490
Capranica Prenestina RM 17 351 444841
Velletri RM 18 53303 498144
Guidonia Montecelio RM 18 88673 586817
Castel Madama RM 18 7399 594216
Artena RM 18 14276 608492
Lanuvio RM 18 13632 622124
Genazzano RM 19 6036 628160
Pisoniano RM 19 770 628930

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km S of Tivoli (56533 inhabitants)
18 Km N of Velletri (53303 inhabitants)
18 Km S of Guidonia Montecelio (88673 inhabitants)
23 Km E of Roma (2864731 inhabitants)
28 Km NE of Pomezia (62966 inhabitants)
29 Km N of Aprilia (73446 inhabitants)
43 Km E of Fiumicino (78395 inhabitants)
44 Km NW of Latina (125985 inhabitants)
45 Km N of Anzio (54211 inhabitants)
78 Km SW of L'Aquila (69753 inhabitants)
80 Km S of Terni (111501 inhabitants)
83 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 1.8 2019-03-11
05:19:08		 41.843 12.7493 9 2019-08-22
08:24:52		 Bollettino Sismico Italiano INGV 66415891
Reviewed
Rev100 		ML 1.2 2019-03-11
05:19:09		 41.8528 12.7487 4 2019-03-11
05:23:20		 Sala Sismica INGV-Roma 66386921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-11 05:19:08 ± 0.05
Latitude 41.8430 ± 0.0027
Longitude 12.7493 ± 0.0036
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 66415891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 334
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
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) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.04766
Epicentral distance of station farthest from the epicenter (degree) 0.59895
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 66415891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-03-11 18:22:13

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 66386921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-11 05:23:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHN. 2019-03-11T05:19:29.54 1.0 undecidable manual S 292 66.4779 50 0.1 22
IV.PTQR.HHZ. 2019-03-11T05:19:27.20 0.6 undecidable manual S 70 57.2982 50 0.22 44
IV.GUAR.HHN. 2019-03-11T05:19:24.12 0.6 undecidable manual S 96 46.8198 50 -0.07 46
IT.MMP1.HGE. 2019-03-11T05:19:23.87 0.6 undecidable manual S 360 45.0216 50 0.15 46
IV.LATB.EHZ. 2019-03-11T05:19:22.72 0.3 undecidable manual S 155 42.5241 50 -0.33 66
IV.TOLF.HHN. 2019-03-11T05:19:20.92 0.1 undecidable manual P 292 66.4779 50 0.23 86
IV.PTQR.HHZ. 2019-03-11T05:19:19.01 0.6 undecidable manual P 70 57.2982 50 -0.26 44
IV.CERT.HHE. 2019-03-11T05:19:17.19 0.3 undecidable manual S 58 22.4553 111 0.07 73
IV.GUAR.HHN. 2019-03-11T05:19:17.56 1.0 undecidable manual P 96 46.8198 50 -0.1 23
IT.MMP1.HGE. 2019-03-11T05:19:17.44 1.0 undecidable manual P 360 45.0216 50 0.05 23
IV.LAV9.HNZ. 2019-03-11T05:19:16.08 0.6 undecidable manual S 193 18.7701 115 0.14 48
IV.MTCE.HHZ. 2019-03-11T05:19:16.25 0.3 undecidable manual S 358 19.9689 114 -0.05 73
IV.LATB.EHZ. 2019-03-11T05:19:16.91 0.3 undecidable manual P 155 42.5241 50 -0.09 70
IV.RCAV.EHZ. 2019-03-11T05:19:14.97 0.3 undecidable manual S 88 16.1727 119 -0.16 72
IV.RDP.HHZ. 2019-03-11T05:19:13.50 0.3 undecidable manual S 199 9.6792 132 0.21 72
IV.CERT.HHE. 2019-03-11T05:19:13.44 0.1 positive manual P 58 22.4553 111 -0.14 95
IV.VIVA.HHN. 2019-03-11T05:19:13.85 0.3 undecidable manual S 171 10.3785 130 0.38 69
IV.MA9.HHN. 2019-03-11T05:19:13.27 0.3 undecidable manual S 223 11.0778 129 -0.37 70
IV.MTCE.HHZ. 2019-03-11T05:19:13.05 0.1 undecidable manual P 358 19.9689 114 -0.05 97
IV.RCAV.EHZ. 2019-03-11T05:19:12.76 0.6 undecidable manual P 88 16.1727 119 0.33 46
IV.LAV9.HNZ. 2019-03-11T05:19:12.83 0.3 undecidable manual P 193 18.7701 115 -0.06 73
IV.RDP.HHZ. 2019-03-11T05:19:11.58 0.1 undecidable manual P 199 9.6792 132 0.22 96
IV.RMP.HHZ. 2019-03-11T05:19:11.93 0.3 undecidable manual S 228 5.2947 149 -0.37 70
IV.VIVA.HHN. 2019-03-11T05:19:11.61 0.1 undecidable manual P 171 10.3785 130 0.14 97
IV.MA9.HHN. 2019-03-11T05:19:11.24 0.6 undecidable manual P 223 11.0778 129 -0.32 47
IV.RMP.HHZ. 2019-03-11T05:19:10.84 0.1 negative manual P 228 5.2947 149 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RMP.HHE. ML:2.1 0.0025800000000000003 0.88 AML other m 2019-03-11T05:19:12.57
IV.RMP.HHN. ML:2.1 0.00222 1.46 AML other m 2019-03-11T05:19:12.14
IV.RDP.HHE. ML:2.1 0.00185 1.74 AML other m 2019-03-11T05:19:15.11
IV.RDP.HHN. ML:2.2 0.002225 0.22 AML other m 2019-03-11T05:19:15.34
IV.RCAV.EHN. ML:1.3 0.00017050000000000002 0.48 AML other m 2019-03-11T05:19:16.19
IV.MTCE.HHN. ML:1.6 0.00033099999999999997 0.44 AML other m 2019-03-11T05:19:16.62
IV.MTCE.HHE. ML:1.2 0.00011449999999999999 0.36 AML other m 2019-03-11T05:19:17.75
IV.RCAV.EHE. ML:1.1 0.0001224 0.48 AML other m 2019-03-11T05:19:18.36
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