Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 20-11-2019 and time 03:54:38 (Italy) in region 3 km E Artena (RM)

A magnitude ML 1.4 earthquake occured in region: 3 km E Artena (RM), on

  • 20-11-2019 02:54:38 (UTC)
  • 20-11-2019 03:54:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7350, 12.9520 at 8 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
Artena RM 3 14276 14276
Colleferro RM 5 21595 35871
Valmontone RM 6 15959 51830
Rocca Massima LT 7 1136 52966
Segni RM 8 9159 62125
Labico RM 8 6379 68504
Gavignano RM 9 1916 70420
Cave RM 10 11287 81707
Lariano RM 10 13432 95139
Cori LT 11 11065 106204
Genazzano RM 11 6036 112240
Paliano FR 12 8281 120521
Montelanico RM 12 2131 122652
Rocca di Cave RM 13 377 123029
Palestrina RM 13 21672 144701
Castel San Pietro Romano RM 13 902 145603
Capranica Prenestina RM 14 351 145954
Velletri RM 15 53303 199257
Zagarolo RM 16 17843 217100
Olevano Romano RM 16 6687 223787
San Cesareo RM 16 15153 238940
Gorga RM 16 710 239650
Norma LT 17 3946 243596
San Vito Romano RM 17 3273 246869
Anagni FR 17 21464 268333
Serrone FR 17 3099 271432
Rocca Priora RM 17 11962 283394
Bellegra RM 18 2887 286281
Poli RM 18 2418 288699
Sgurgola FR 18 2676 291375
Carpineto Romano RM 18 4524 295899
Roiate RM 18 737 296636
Gallicano nel Lazio RM 19 6334 302970
Cisterna di Latina LT 19 36868 339838
Piglio FR 19 4666 344504
Pisoniano RM 19 770 345274
Acuto FR 20 1920 347194
Monte Compatri RM 20 11978 359172
Nemi RM 20 1943 361115
Casape RM 20 744 361859

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Velletri (53303 inhabitants)
29 Km SE of Tivoli (56533 inhabitants)
30 Km NE of Aprilia (73446 inhabitants)
30 Km N of Latina (125985 inhabitants)
35 Km SE of Guidonia Montecelio (88673 inhabitants)
38 Km E of Pomezia (62966 inhabitants)
42 Km NE of Anzio (54211 inhabitants)
43 Km E of Roma (2864731 inhabitants)
59 Km E of Fiumicino (78395 inhabitants)
78 Km SW of L'Aquila (69753 inhabitants)
95 Km S of Terni (111501 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 1.4 2019-11-20
02:54:38		 41.735 12.9523 8 2020-02-28
16:42:07		 Bollettino Sismico Italiano INGV 73932911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-20 02:54:38 ± 0.05
Latitude 41.7350 ± 0.0036
Longitude 12.9523 ± 0.0036
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73932911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 436
Semi-minor axis of confidence ellipse (meter) 266
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 4
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.13670
Epicentral distance of station farthest from the epicenter (degree) 0.56657
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.5
Num. used stations 12
Type of magnitude ML
Reference to an origin 73932911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-11-20 11:02:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.POFI.HNE. 2019-11-20T02:54:58.67 0.3 undecidable manual S 92 62.8926 50 0.02 71
IV.VVLD.HHZ. 2019-11-20T02:54:56.82 0.3 undecidable manual S 75 57.498 50 -0.37 66
IV.LRP.EHZ. 2019-11-20T02:54:56.20 0.3 undecidable manual S 100 53.4021 50 0.09 71
IV.POFI.HNE. 2019-11-20T02:54:50.44 0.1 undecidable manual P 92 62.8926 50 0.26 90
IV.GUAR.HNN. 2019-11-20T02:54:49.44 0.3 undecidable manual S 77 30.5472 104 -0.09 74
IV.GIUL.HHZ. 2019-11-20T02:54:49.79 0.3 undecidable manual S 128 31.8459 103 -0.18 72
IV.VVLD.HHZ. 2019-11-20T02:54:49.19 0.1 undecidable manual P 75 57.498 50 -0.15 93
IV.LRP.EHZ. 2019-11-20T02:54:48.87 0.1 undecidable manual P 100 53.4021 50 0.15 93
IV.SAMA.EHZ. 2019-11-20T02:54:48.99 0.3 undecidable manual S 280 30.2475 104 -0.44 69
IV.LAV9.HHZ. 2019-11-20T02:54:47.03 0.3 undecidable manual S 253 21.9669 109 0.36 71
IV.LATB.EHZ. 2019-11-20T02:54:47.92 0.3 undecidable manual S 178 26.751 106 -0.35 70
IV.CERT.HHZ. 2019-11-20T02:54:47.48 0.3 undecidable manual S 6 23.8539 108 0.17 73
IV.MA9.HHN. 2019-11-20T02:54:47.22 0.3 undecidable manual S 279 24.5532 107 -0.32 71
IV.RMP.HHN. 2019-11-20T02:54:46.55 0.3 undecidable manual S 292 22.3554 109 -0.26 72
IV.GIUL.HHZ. 2019-11-20T02:54:45.28 0.1 positive manual P 128 31.8459 103 0.11 98
IV.MTCE.HHZ. 2019-11-20T02:54:45.79 0.6 undecidable manual P 332 36.3414 102 -0.26 47
IV.RDP.HHZ. 2019-11-20T02:54:45.83 0.6 undecidable manual S 278 20.2686 111 -0.28 48
IV.SAMA.EHZ. 2019-11-20T02:54:44.56 0.1 undecidable manual P 280 30.2475 104 -0.3 94
IV.GUAR.HNN. 2019-11-20T02:54:44.63 1.0 undecidable manual P 77 30.5472 104 -0.29 24
IV.VIVA.HHN. 2019-11-20T02:54:44.60 1.0 undecidable manual S 276 15.1737 117 0.1 25
IV.LATB.EHZ. 2019-11-20T02:54:44.29 1.0 undecidable manual P 178 26.751 106 0.1 25
IV.CERT.HHZ. 2019-11-20T02:54:43.70 0.1 undecidable manual P 6 23.8539 108 0.06 100
IV.MA9.HHN. 2019-11-20T02:54:43.64 0.3 undecidable manual P 279 24.5532 107 -0.13 74
IV.RMP.HHN. 2019-11-20T02:54:43.52 0.1 negative manual P 292 22.3554 109 0.17 98
IV.LAV9.HHZ. 2019-11-20T02:54:43.64 0.1 undecidable manual P 253 21.9669 109 0.37 94
IV.RDP.HHZ. 2019-11-20T02:54:43.23 0.1 negative manual P 278 20.2686 111 0.28 96
IV.VIVA.HHN. 2019-11-20T02:54:42.43 0.1 undecidable manual P 276 15.1737 117 0.41 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RDP.HHN. ML:1.8 0.0004785 0.4 AML other m 2019-11-20T02:54:47.20
IV.RDP.HHE. ML:1.6 0.0002785 0.28 AML other m 2019-11-20T02:54:49.28
IV.CERT.HHE. ML:1.0 0.00006395000000000001 0.58 AML other m 2019-11-20T02:54:49.85
IV.LAV9.HHN. ML:1.7 0.0003765 0.34 AML other m 2019-11-20T02:54:49.58
IV.LAV9.HHE. ML:1.8 0.0004265 0.52 AML other m 2019-11-20T02:54:50.73
IV.CERT.HHN. ML:0.9 0.00005015 0.58 AML other m 2019-11-20T02:54:52.46
IV.LAV9.HNE. ML:1.9 0.00059663065 1.2704 AML other m 2019-11-20T02:54:55.97
IV.LAV9.HNN. ML:1.7 0.00037379285 0.32 AML other m 2019-11-20T02:54:49.58
IV.LATB.EHN. ML:0.2 0.0000121096375 0.2608 AML other m 2019-11-20T02:54:48.60
IV.LATB.EHE. ML:0.6 0.0000178638965 0.4 AML other m 2019-11-20T02:54:48.25
IV.LRP.EHN. ML:1.0 0.000026468627499999998 0.2 AML other m 2019-11-20T02:54:56.86
IV.LRP.EHE. ML:1.2 0.000033900295 0.24 AML other m 2019-11-20T02:54:58.11
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