Earthquake with magnitude of ML 1.5 on date 21-10-2019 and time 21:46:11 (UTC) in region 8 km W Pontinia (LT)

A magnitude ML 1.5 earthquake occured in region: 8 km W Pontinia (LT), on

  • 21-10-2019 21:46:11 (UTC)
  • 21-10-2019 23:46:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.41, 12.95 at 10 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
Pontinia LT 8 14920 14920
Latina LT 8 125985 140905
Sabaudia LT 13 20432 161337
Sezze LT 14 24894 186231
Sermoneta LT 16 9842 196073
Bassiano LT 17 1583 197656
Norma LT 20 3946 201602

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SE of Latina (125985 inhabitants)
28 Km E of Anzio (54211 inhabitants)
33 Km SE of Aprilia (73446 inhabitants)
34 Km SE of Velletri (53303 inhabitants)
48 Km SE of Pomezia (62966 inhabitants)
63 Km S of Tivoli (56533 inhabitants)
67 Km SE of Roma (2864731 inhabitants)
69 Km S of Guidonia Montecelio (88673 inhabitants)
72 Km SE of Fiumicino (78395 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 1.5 2019-10-21
21:46:11
41.41 12.95 10 2019-10-21
21:56:46
Sala Sismica INGV-Roma 73380861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-21 21:46:11 ± 0.26
Latitude 41.41 ± 0.01
Longitude 12.95 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73380861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1536
Semi-minor axis of confidence ellipse (meter) 558
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 201
Circular confidence region, given by single value of horizontal uncertainty (meter) 1540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 235
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.96767
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 73380861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-21 21:56:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2019-10-21T21:48:09.77 3.0 undecidable manual Sn -1.89 0
IV.ERC.EHZ. 2019-10-21T21:47:39.05 3.0 undecidable manual Sn -4.05 0
IV.APEC.HHZ. 2019-10-21T21:47:12.71 3.0 undecidable manual Sn -3.63 0
IV.FIR.HHZ. 2019-10-21T21:47:00.15 3.0 undecidable manual Pg 5.65 0
IV.CPGN.EHZ. 2019-10-21T21:46:53.63 3.0 undecidable manual Pg 2.43 0
IV.PTQR.HHN. 2019-10-21T21:46:34.82 0.6 undecidable manual S 28 0.6988 50 0.25 44
IV.VVLD.HNE. 2019-10-21T21:46:34.20 0.6 undecidable manual S 47 0.6808 50 0.17 45
IV.POFI.HHZ. 2019-10-21T21:46:33.73 0.6 undecidable manual S 61 0.6457 50 0.72 39
IV.CERT.HHZ. 2019-10-21T21:46:29.99 0.6 undecidable manual S 2 0.5414 50 0.07 47
IV.TOLF.HHZ. 2019-10-21T21:46:29.93 0.3 undecidable manual P 313 0.9677 50 0.61 57
IV.LRP.EHN. 2019-10-21T21:46:29.92 0.3 undecidable manual S 63 0.5306 50 0.34 67
IV.LIK.EHN. 2019-10-21T21:46:28.52 0.3 undecidable manual S 78 0.4623 50 0.95 55
IV.RCAV.EHE. 2019-10-21T21:46:26.52 0.6 undecidable manual S 359 0.4398 50 -0.38 45
IV.RMP.HHZ. 2019-10-21T21:46:26.92 0.6 undecidable manual S 335 0.4452 50 -0.14 47
IV.RDP.HHZ. 2019-10-21T21:46:25.76 0.6 undecidable manual S 333 0.3975 50 0.12 48
IV.PTQR.HHN. 2019-10-21T21:46:24.46 0.3 undecidable manual P 28 0.6988 50 -0.25 66
IV.VIVA.HHZ. 2019-10-21T21:46:24.96 0.6 undecidable manual S 338 0.3696 50 0.15 48
IV.POFI.HHZ. 2019-10-21T21:46:23.66 0.3 undecidable manual P 61 0.6457 50 -0.16 68
IV.VVLD.HNE. 2019-10-21T21:46:23.95 0.1 undecidable manual P 47 0.6808 50 -0.45 85
IV.LRP.EHN. 2019-10-21T21:46:21.65 0.1 undecidable manual P 63 0.5306 50 -0.19 92
IV.CERT.HHZ. 2019-10-21T21:46:21.44 0.1 undecidable manual P 2 0.5414 50 -0.59 83
IV.GIUL.HHZ. 2019-10-21T21:46:21.51 0.3 undecidable manual S 56 0.2707 50 -0.38 70
IV.RCAV.EHE. 2019-10-21T21:46:20.31 0.1 undecidable manual P 359 0.4398 50 0.03 97
IV.RMP.HHZ. 2019-10-21T21:46:20.84 0.3 undecidable manual P 335 0.4452 50 0.46 67
IV.LIK.EHN. 2019-10-21T21:46:20.39 0.3 undecidable manual P 78 0.4623 50 -0.29 69
IV.RDP.HHZ. 2019-10-21T21:46:19.85 0.6 undecidable manual P 333 0.3975 50 0.29 47
IV.VIVA.HHZ. 2019-10-21T21:46:18.89 0.3 undecidable manual P 338 0.3696 50 -0.19 72
IV.GIUL.HHZ. 2019-10-21T21:46:17.13 0.1 positive manual P 56 0.2707 50 -0.26 96
IV.LATB.EHZ. 2019-10-21T21:46:16.20 0.3 undecidable manual S 4 0.0863 137 0.06 78
IV.LATB.EHZ. 2019-10-21T21:46:14.31 0.1 positive manual P 4 0.0863 137 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RDP.HHE. ML:1.7 0.0001575 0.16 AML other m 2019-10-21T21:46:26.86
IV.LATB.EHE. ML:1.1 0.000175 0.48 AML other m 2019-10-21T21:46:16.31
IV.VIVA.HHN. ML:2 0.000313 0.14 AML other m 2019-10-21T21:46:25.49
IV.RDP.HHN. ML:1.8 0.000199 0.12 AML other m 2019-10-21T21:46:26.29
IV.RMP.HHE. ML:1.7 0.000119 0.1 AML other m 2019-10-21T21:46:27.38
IV.RMP.HHN. ML:1.7 0.0001305 0.52 AML other m 2019-10-21T21:46:28.06
IV.CERT.HHN. ML:1.3 4.26E-5 0.32 AML other m 2019-10-21T21:46:31.55
IV.POFI.HHN. ML:1.1 2.049E-5 0.74 AML other m 2019-10-21T21:46:35.78
IV.POFI.HHE. ML:1.4 3.97E-5 0.78 AML other m 2019-10-21T21:46:35.43
IV.GIUL.HHE. ML:1.3 8.9744785E-5 0.1664 AML other m 2019-10-21T21:46:23.06
IV.GIUL.HHN. ML:1.4 0.000109328975 0.0768 AML other m 2019-10-21T21:46:23.10
IV.VIVA.HHE. ML:2 0.00033485505 0.1536 AML other m 2019-10-21T21:46:25.68
IV.CERT.HHE. ML:1.4 5.137082E-5 0.3328 AML other m 2019-10-21T21:46:35.07
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