Earthquake with magnitude of ML 1.8 on date 13-08-2019 and time 16:16:55 (Italy) in region 8 km E Roma (RM)

A magnitude ML 1.8 earthquake occured in region: 8 km E Roma (RM), on

  • 13-08-2019 14:16:55 (UTC)
  • 13-08-2019 16:16:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.91, 12.58 at 18 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Roma RM 8 2864731 2864731
Fonte Nuova RM 11 32562 2897293
Ciampino RM 11 38412 2935705
Frascati RM 14 22087 2957792
Grottaferrata RM 15 20327 2978119
Monte Porzio Catone RM 15 8693 2986812
Mentana RM 15 22921 3009733
Guidonia Montecelio RM 16 88673 3098406
Colonna RM 16 4287 3102693
Marino RM 16 43026 3145719
Monterotondo RM 17 40830 3186549
Monte Compatri RM 17 11978 3198527
Sant'Angelo Romano RM 18 5018 3203545
Castel Gandolfo RM 18 8997 3212542
Tivoli RM 19 56533 3269075
Rocca di Papa RM 19 17034 3286109
Rocca Priora RM 19 11962 3298071

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km E of Roma (2864731 inhabitants)
16 Km SW of Guidonia Montecelio (88673 inhabitants)
19 Km W of Tivoli (56533 inhabitants)
27 Km N of Pomezia (62966 inhabitants)
29 Km NW of Velletri (53303 inhabitants)
32 Km E of Fiumicino (78395 inhabitants)
35 Km N of Aprilia (73446 inhabitants)
51 Km N of Anzio (54211 inhabitants)
55 Km NW of Latina (125985 inhabitants)
69 Km E of Civitavecchia (52991 inhabitants)
69 Km SE of Viterbo (67173 inhabitants)
73 Km S of Terni (111501 inhabitants)
84 Km SW of L'Aquila (69753 inhabitants)
Recent and historical Seismicity
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
Rev 100 ML 1.8 2019-08-13
14:16:55
41.91 12.58 18 2019-08-13
14:29:24
Sala Sismica INGV-Roma 71457291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-13 14:16:55 ± 0.27
Latitude 41.91 ± 0.01
Longitude 12.58 ± 0.01
Depth (km) 18 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71457291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 870
Semi-minor axis of confidence ellipse (meter) 864
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 299
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.7914
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 71457291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-13 14:29:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MBAL.EHZ. 2019-08-13T14:18:38.56 3.0 undecidable manual Sg 12.46 0
IV.ECTS.EHZ. 2019-08-13T14:18:35.33 3.0 undecidable manual Sn -9.99 0
IV.NDIM.HHZ. 2019-08-13T14:18:29.52 3.0 undecidable manual Sg 19.780001 0
GU.TRAV.HHZ. 2019-08-13T14:18:23.96 3.0 undecidable manual Pg 21.9 0
IV.AGLI.HHZ. 2019-08-13T14:18:19.01 3.0 undecidable manual Sn -2.09 0
CR.STON.BHZ. 2019-08-13T14:18:19.76 3.0 undecidable manual Sg 12.76 0
MN.TRI.HHZ. 2019-08-13T14:18:09.04 3.0 undecidable manual Sn -3.41 0
IV.SARZ.HHZ. 2019-08-13T14:18:06.19 3.0 positive manual Pg 18.52 0
IV.MFNL.HHZ. 2019-08-13T14:17:50.33 3.0 undecidable manual Pn -4.38 0
IT.FIE.HGZ. 2019-08-13T14:17:50.17 3.0 undecidable manual Sn 3.75 0
IV.CADC.HNZ. 2019-08-13T14:17:49.44 3.0 positive manual Pn 5.45 0
SL.LJU.BHZ. 2019-08-13T14:17:42.02 3.0 undecidable manual Pn 1.95 0
IV.AGLI.HHZ. 2019-08-13T14:17:42.93 3.0 positive manual Pn 3.36 0
IV.OSSC.HHZ. 2019-08-13T14:17:40.11 3.0 undecidable manual Sn -3.18 0
IV.SIRI.HHZ. 2019-08-13T14:17:36.47 3.0 undecidable manual Pg 7.45 0
IV.NDIM.HHZ. 2019-08-13T14:17:32.30 3.0 positive manual Pn -0.89 0
IV.ZCCA.HHZ. 2019-08-13T14:17:28.38 3.0 positive manual Pn 1.06 0
MN.TRI.HHZ. 2019-08-13T14:17:27.09 3.0 negative manual Pn -7.62 0
IV.SGG.HHZ. 2019-08-13T14:17:26.44 3.0 undecidable manual Sg 3.66 0
IV.BRIS.HHZ. 2019-08-13T14:17:23.94 3.0 negative manual Pg 3.19 0
IV.GIUL.HHZ. 2019-08-13T14:17:17.45 0.6 undecidable manual S 123 0.6466 0.2 46
IV.CESX.HHZ. 2019-08-13T14:17:12.68 3.0 undecidable manual Sn 0.01 0
TV.SF01.EHZ. 2019-08-13T14:17:11.58 3.0 undecidable manual Pn -0.18 0
IT.ORP.HGZ. 2019-08-13T14:17:10.87 3.0 undecidable manual Pn -2.58 0
IV.LRP.EHZ. 2019-08-13T14:17:10.92 0.3 undecidable manual P 109 0.7914 95 -0.05 66
IV.CERT.HHZ. 2019-08-13T14:17:08.10 0.6 undecidable manual S 82 0.2995 107 0.53 44
IV.RCAV.EHZ. 2019-08-13T14:17:07.30 0.6 undecidable manual S 102 0.2752 109 0.4 45
IV.PTRJ.HHZ. 2019-08-13T14:17:05.16 3.0 undecidable manual Pn -2.66 0
IV.RDP.HHZ. 2019-08-13T14:17:04.50 0.6 undecidable manual S 147 0.1736 124 0.32 47
IV.MTCE.HHZ. 2019-08-13T14:17:03.70 0.3 undecidable manual S 45 0.1664 125 -0.3 71
IV.CERT.HHZ. 2019-08-13T14:17:02.58 0.3 undecidable manual P 82 0.2995 107 -0.09 72
IV.RCAV.EHZ. 2019-08-13T14:17:02.34 0.1 undecidable manual P 102 0.2752 109 0.06 98
IV.ASSB.HHZ. 2019-08-13T14:17:02.41 3.0 undecidable manual P -0.54 0
IT.RMVT.HGE. 2019-08-13T14:17:02.47 0.1 undecidable manual S 305 0.0881 146 0.1 100
IV.RMP.HHZ. 2019-08-13T14:17:02.90 0.3 undecidable manual S 137 0.1295 134 -0.26 72
IV.MTCE.HHZ. 2019-08-13T14:17:00.55 0.1 undecidable manual P 45 0.1664 125 -0.06 99
IV.RMP.HHZ. 2019-08-13T14:17:00.31 0.1 undecidable manual P 137 0.1295 134 0.19 98
IV.RDP.HHZ. 2019-08-13T14:17:00.26 0.3 undecidable manual P 147 0.1736 124 -0.45 68
IT.RMVT.HGE. 2019-08-13T14:16:59.65 0.6 undecidable manual P 305 0.0881 146 -0.02 51
IV.GAVE.EHZ. 2019-08-13T14:16:59.94 3.0 undecidable manual P 1.42 0
IV.TERO.HHZ. 2019-08-13T14:16:55.28 3.0 undecidable manual Pn 1.65 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RMP.HHE. ML:2.1 0.000944 0.92 AML other m 2019-08-13T14:17:03.89
IV.MTCE.HHN. ML:1.6 0.000235 1.8 AML other m 2019-08-13T14:17:03.06
IV.MTCE.HHE. ML:1.5 0.0002155 0.74 AML other m 2019-08-13T14:17:04.41
IV.RMP.HHN. ML:2.2 0.001148 1.52 AML other m 2019-08-13T14:17:04.88
IV.RDP.HHN. ML:2 0.00059 0.56 AML other m 2019-08-13T14:17:04.70
IV.RDP.HHE. ML:1.9 0.0005335 0.46 AML other m 2019-08-13T14:17:07.22
IV.CERT.HHE. ML:1.5 0.000135 0.52 AML other m 2019-08-13T14:17:09.32
IV.CERT.HHN. ML:1.2 6.48E-5 0.56 AML other m 2019-08-13T14:17:10.96
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download