Earthquake with magnitude of ML 1.9 on date 08-07-2019 and time 03:58:33 (UTC) in region 3 km NE Colonna (RM)

A magnitude ML 1.9 earthquake occured in region: 3 km NE Colonna (RM), on

  • 08-07-2019 03:58:33 (UTC)
  • 08-07-2019 05:58:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.86, 12.77 at 11 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.

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
Gallicano nel Lazio RM 5 6334 10621
San Cesareo RM 5 15153 25774
Zagarolo RM 6 17843 43617
Monte Compatri RM 6 11978 55595
Monte Porzio Catone RM 7 8693 64288
Rocca Priora RM 7 11962 76250
Frascati RM 9 22087 98337
Palestrina RM 10 21672 120009
Castel San Pietro Romano RM 11 902 120911
Poli RM 11 2418 123329
San Gregorio da Sassola RM 11 1619 124948
Casape RM 11 744 125692
Grottaferrata RM 12 20327 146019
Tivoli RM 12 56533 202552
Rocca di Papa RM 12 17034 219586
Labico RM 13 6379 225965
Marino RM 14 43026 268991
Cave RM 14 11287 280278
Rocca di Cave RM 15 377 280655
Capranica Prenestina RM 15 351 281006
Ciampino RM 15 38412 319418
Castel Madama RM 15 7399 326817
Valmontone RM 15 15959 342776
Lariano RM 16 13432 356208
Castel Gandolfo RM 16 8997 365205
Guidonia Montecelio RM 16 88673 453878
Nemi RM 16 1943 455821
Pisoniano RM 17 770 456591
Albano Laziale RM 17 41715 498306
Genazzano RM 17 6036 504342
Ariccia RM 18 19407 523749
San Polo dei Cavalieri RM 18 2992 526741
San Vito Romano RM 18 3273 530014
Artena RM 18 14276 544290
Genzano di Roma RM 18 23970 568260
Ciciliano RM 18 1336 569596
Marcellina RM 19 7280 576876
Velletri RM 19 53303 630179
Fonte Nuova RM 20 32562 662741
Sambuci RM 20 925 663666
Sant'Angelo Romano RM 20 5018 668684
Vicovaro RM 20 4019 672703

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)
24 Km E of Roma (2864731 inhabitants)
31 Km NE of Pomezia (62966 inhabitants)
31 Km NE of Aprilia (73446 inhabitants)
45 Km N of Latina (125985 inhabitants)
45 Km E of Fiumicino (78395 inhabitants)
47 Km N of Anzio (54211 inhabitants)
75 Km SW of L'Aquila (69753 inhabitants)
79 Km S of Terni (111501 inhabitants)
83 Km SE of Viterbo (67173 inhabitants)
85 Km E of Civitavecchia (52991 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.9 2019-07-08
03:58:33
41.86 12.77 11 2019-11-13
14:30:54
Bollettino Sismico Italiano INGV 70429411
Reviewed
Rev100
ML 2.0 2019-07-08
03:58:33
41.87 12.77 11 2019-07-08
04:03:30
Sala Sismica INGV-Roma 70354211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-08 03:58:33 ± 0.04
Latitude 41.86 ± 0.00
Longitude 12.77 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 70429411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 262
Semi-minor axis of confidence ellipse (meter) 230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 141
Circular confidence region, given by single value of horizontal uncertainty (meter) 260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
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) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.83637
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:2

Field Value
Value 2
Uncertainty 0.4
Num. used stations 22
Type of magnitude ML
Reference to an origin 70354211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-08 04:03:30

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 21
Type of magnitude ML
Reference to an origin 70429411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-07-10 07:57:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2019-07-08T03:59:01.64 0.6 undecidable manual S 6 0.8364 50 0.47 40
IV.POFI.HNE. 2019-07-08T03:58:58.02 0.6 undecidable manual S 101 0.7168 50 0.39 42
IV.ARRO.EHZ. 2019-07-08T03:58:58.12 0.3 undecidable manual S 360 0.7186 50 0.45 61
IV.BARO.HNZ. 2019-07-08T03:58:56.05 1.0 undecidable manual S 306 0.6592 50 0.14 22
MN.AQU.HNN. 2019-07-08T03:58:56.55 1.0 undecidable manual S 43 0.6817 50 -0.05 22
IV.VVLD.HHZ. 2019-07-08T03:58:54.99 1.0 undecidable manual S 89 0.6358 50 -0.23 22
IV.PTQR.HHZ. 2019-07-08T03:58:51.13 0.3 undecidable manual S 71 0.4964 50 0.04 70
IV.FIAM.HHZ. 2019-07-08T03:58:50.71 0.6 undecidable manual S 32 0.482 50 0.03 47
IV.T0110.HHZ. 2019-07-08T03:58:49.45 0.3 undecidable manual P 63 0.8328 50 -0.11 64
IV.GAVE.EHZ. 2019-07-08T03:58:49.37 0.1 undecidable manual P 6 0.8364 50 -0.24 84
IV.SRES.HHN. 2019-07-08T03:58:48.79 0.6 undecidable manual S 333 0.4227 50 -0.13 47
IV.GUAR.HNN. 2019-07-08T03:58:48.51 0.6 undecidable manual S 99 0.4092 50 -0.02 48
IV.POFI.HNE. 2019-07-08T03:58:47.43 0.1 undecidable manual P 101 0.7168 50 -0.14 88
IV.LATB.EHZ. 2019-07-08T03:58:47.73 0.3 undecidable manual S 158 0.3939 50 -0.33 67
IV.ARRO.EHZ. 2019-07-08T03:58:47.65 0.1 undecidable manual P 360 0.7186 50 0.06 89
MN.AQU.HNN. 2019-07-08T03:58:46.88 1.0 undecidable manual P 43 0.6817 50 -0.09 22
IV.VVLD.HHZ. 2019-07-08T03:58:46.00 0.1 negative manual P 89 0.6358 50 -0.18 88
IV.BARO.HNZ. 2019-07-08T03:58:46.65 0.3 undecidable manual P 306 0.6592 50 0.07 67
IV.GIUL.HHZ. 2019-07-08T03:58:43.44 0.1 undecidable manual P 130 0.4712 50 0.07 93
IV.FIAM.HHZ. 2019-07-08T03:58:43.51 0.1 undecidable manual P 32 0.482 50 -0.04 94
IV.PTQR.HHZ. 2019-07-08T03:58:43.95 0.1 positive manual P 71 0.4964 50 0.16 91
IV.GUAR.HNN. 2019-07-08T03:58:42.13 0.1 undecidable manual P 99 0.4092 50 -0.18 92
IV.LAV9.HNZ. 2019-07-08T03:58:42.09 0.3 undecidable manual S 196 0.1898 117 0.08 74
IV.SRES.HHN. 2019-07-08T03:58:42.64 0.6 undecidable manual P 333 0.4227 50 0.1 47
IV.CERT.HHZ. 2019-07-08T03:58:41.33 0.3 undecidable manual S 61 0.1808 118 -0.37 70
IV.LATB.EHZ. 2019-07-08T03:58:41.87 0.1 negative manual P 158 0.3939 50 -0.17 93
IV.MTCE.HHZ. 2019-07-08T03:58:40.86 0.3 undecidable manual S 353 0.1637 120 -0.25 72
IV.SAMA.HHZ. 2019-07-08T03:58:40.41 0.3 undecidable manual S 239 0.1547 122 -0.39 70
IV.RCAV.EHZ. 2019-07-08T03:58:40.15 0.3 undecidable manual S 96 0.1313 126 0.08 75
IV.VIVA.HHN. 2019-07-08T03:58:39.72 0.3 undecidable manual S 180 0.1106 131 0.29 72
IV.MA9.HHN. 2019-07-08T03:58:39.72 0.3 undecidable manual S 222 0.1223 128 -0.07 75
IV.RDP.HHZ. 2019-07-08T03:58:39.63 0.3 undecidable manual S 204 0.1097 131 0.23 73
IV.MTCE.HHZ. 2019-07-08T03:58:38.07 0.1 positive manual P 353 0.1637 120 0.04 100
IV.CERT.HHZ. 2019-07-08T03:58:38.40 0.1 negative manual P 61 0.1808 118 0.03 100
IV.LAV9.HNZ. 2019-07-08T03:58:38.40 0.3 undecidable manual P 196 0.1898 117 -0.15 73
IV.RCAV.EHZ. 2019-07-08T03:58:37.59 0.1 negative manual P 96 0.1313 126 0.16 98
IV.RMP.HHZ. 2019-07-08T03:58:37.96 0.3 undecidable manual S 225 0.0701 144 -0.42 70
IV.VIVA.HHN. 2019-07-08T03:58:37.24 0.1 undecidable manual P 180 0.1106 131 0.18 98
IV.MA9.HHN. 2019-07-08T03:58:37.25 0.3 undecidable manual P 222 0.1223 128 -0.02 76
IV.RDP.HHZ. 2019-07-08T03:58:37.42 0.1 undecidable manual P 204 0.1097 131 0.38 94
IV.SAMA.HHZ. 2019-07-08T03:58:37.81 0.1 undecidable manual P 239 0.1547 122 -0.04 100
IV.RMP.HHZ. 2019-07-08T03:58:36.66 0.1 negative manual P 225 0.0701 144 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RMP.HHN. ML:2.7 0.00658 0.18 AML other m 2019-07-08T03:58:38.46
IV.RMP.HHE. ML:2.6 0.005145 0.68 AML other m 2019-07-08T03:58:38.40
IV.RDP.HHN. ML:2.6 0.004 0.4 AML other m 2019-07-08T03:58:40.14
IV.RDP.HHE. ML:2.5 0.00323 0.62 AML other m 2019-07-08T03:58:40.80
IV.MTCE.HHN. ML:2.1 0.001145 0.42 AML other m 2019-07-08T03:58:41.27
IV.MTCE.HHE. ML:2.1 0.00112 0.34 AML other m 2019-07-08T03:58:41.38
IV.CERT.HHN. ML:2 0.000809 1.34 AML other m 2019-07-08T03:58:41.17
IV.RCAV.EHE. ML:1.9 0.000756 1.58 AML other m 2019-07-08T03:58:41.87
IV.RCAV.EHN. ML:1.9 0.000762 1.54 AML other m 2019-07-08T03:58:41.16
IV.CERT.HHE. ML:2.1 0.0010135 1.24 AML other m 2019-07-08T03:58:43.73
IV.LATB.EHN. ML:1.1 3.71E-5 0.32 AML other m 2019-07-08T03:58:48.70
IV.LATB.EHE. ML:1.3 6.35E-5 0.46 AML other m 2019-07-08T03:58:48.97
IV.FIAM.HHN. ML:1.5 7.055E-5 0.5 AML other m 2019-07-08T03:58:52.02
IV.FIAM.HHE. ML:1.4 6.385E-5 0.52 AML other m 2019-07-08T03:58:58.34
IV.ARRO.EHN. ML:1.9 9.8E-5 0.62 AML other m 2019-07-08T03:59:00.53
IV.VVLD.HHN. ML:1.7 7.525E-5 0.54 AML other m 2019-07-08T03:59:00.61
IV.ARRO.EHE. ML:1.8 7.755E-5 0.62 AML other m 2019-07-08T03:59:03.49
IV.VVLD.HHE. ML:1.5 5.22E-5 1.5 AML other m 2019-07-08T03:59:04.09
IV.GAVE.EHE. ML:1.9 9.115E-5 0.76 AML other m 2019-07-08T03:59:05.06
IV.GAVE.EHN. ML:2 0.00012 0.26 AML other m 2019-07-08T03:59:05.73
IV.FIAM.HNN. ML:1.8 0.00015324785 0.7104 AML other m 2019-07-08T03:58:52.02
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in full SEED format Download