Earthquake with magnitude of ML 1.5 on date 23-10-2019 and time 04:01:39 (UTC) in region 3 km E Artena (RM)

A magnitude ML 1.5 earthquake occured in region: 3 km E Artena (RM), on

  • 23-10-2019 04:01:39 (UTC)
  • 23-10-2019 06:01:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.75, 12.95 at 11 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
Artena RM 3 14276 14276
Valmontone RM 4 15959 30235
Colleferro RM 5 21595 51830
Labico RM 7 6379 58209
Rocca Massima LT 8 1136 59345
Cave RM 8 11287 70632
Segni RM 9 9159 79791
Genazzano RM 10 6036 85827
Lariano RM 10 13432 99259
Gavignano RM 10 1916 101175
Paliano FR 11 8281 109456
Rocca di Cave RM 11 377 109833
Palestrina RM 12 21672 131505
Cori LT 12 11065 142570
Castel San Pietro Romano RM 12 902 143472
Montelanico RM 13 2131 145603
Capranica Prenestina RM 13 351 145954
Olevano Romano RM 15 6687 152641
Zagarolo RM 15 17843 170484
San Cesareo RM 15 15153 185637
San Vito Romano RM 16 3273 188910
Velletri RM 16 53303 242213
Serrone FR 16 3099 245312
Bellegra RM 16 2887 248199
Poli RM 16 2418 250617
Rocca Priora RM 16 11962 262579
Gorga RM 17 710 263289
Anagni FR 17 21464 284753
Roiate RM 17 737 285490
Gallicano nel Lazio RM 17 6334 291824
Norma LT 18 3946 295770
Pisoniano RM 18 770 296540
Sgurgola FR 19 2676 299216
Casape RM 19 744 299960
Piglio FR 19 4666 304626
Monte Compatri RM 19 11978 316604
Acuto FR 19 1920 318524
Colonna RM 19 4287 322811
Carpineto Romano RM 19 4524 327335
Rocca Santo Stefano RM 19 975 328310
Nemi RM 20 1943 330253
Affile RM 20 1548 331801
Cisterna di Latina LT 20 36868 368669

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Velletri (53303 inhabitants)
27 Km SE of Tivoli (56533 inhabitants)
30 Km NE of Aprilia (73446 inhabitants)
31 Km N of Latina (125985 inhabitants)
34 Km SE of Guidonia Montecelio (88673 inhabitants)
38 Km E of Pomezia (62966 inhabitants)
42 Km E of Roma (2864731 inhabitants)
43 Km NE of Anzio (54211 inhabitants)
59 Km E of Fiumicino (78395 inhabitants)
77 Km SW of L'Aquila (69753 inhabitants)
94 Km S of Terni (111501 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 2019-10-23
04:01:39
41.75 12.95 11 2019-10-23
04:09:03
Sala Sismica INGV-Roma 73403081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-23 04:01:39 ± 0.05
Latitude 41.75 ± 0.01
Longitude 12.95 ± 0.00
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73403081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 973
Semi-minor axis of confidence ellipse (meter) 327
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 970
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.29498
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 73403081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-23 04:09:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2019-10-23T04:01:50.95 0.6 undecidable manual S 130 0.295 91 0.09 48
IV.LRP.EHZ. 2019-10-23T04:01:49.53 3.0 negative manual P 0.07 0
IV.CERT.HHZ. 2019-10-23T04:01:48.15 0.6 undecidable manual S 6 0.2041 91 -0.02 49
IV.VIVA.HHZ. 2019-10-23T04:01:46.10 0.6 undecidable manual S 272 0.1349 96 -0.02 50
IV.RCAV.EHZ. 2019-10-23T04:01:45.08 0.6 undecidable manual S 358 0.1007 115 -0.08 50
IV.GIUL.HHZ. 2019-10-23T04:01:45.96 0.6 negative manual P 130 0.295 91 -0.17 47
IV.CERT.HHZ. 2019-10-23T04:01:44.61 0.6 undecidable manual P 6 0.2041 91 0.03 49
IV.VIVA.HHZ. 2019-10-23T04:01:43.41 0.1 negative manual P 272 0.1349 96 0.01 100
IV.RCAV.EHZ. 2019-10-23T04:01:43.11 1.0 undecidable manual P 358 0.1007 115 0.27 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RCAV.EHN. ML:1.3 0.0001995 0.5 AML other m 2019-10-23T04:01:45.96
IV.RCAV.EHE. ML:1.3 0.0001995 0.32 AML other m 2019-10-23T04:01:45.59
IV.VIVA.HHE. ML:1.8 0.000607 0.48 AML other m 2019-10-23T04:01:47.45
IV.VIVA.HHN. ML:1.7 0.0005035 0.92 AML other m 2019-10-23T04:01:48.86
IV.GIUL.HHE. ML:1.2 6.94E-5 0.5 AML other m 2019-10-23T04:01:51.45
IV.GIUL.HHN. ML:1.5 0.000131 0.24 AML other m 2019-10-23T04:01:51.50
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