Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 06-08-2019 and time 23:05:31 (Italy) in region 5 km NW Otricoli (TR)

A magnitude ML 1.3 earthquake occured in region: 5 km NW Otricoli (TR), on

  • 06-08-2019 21:05:31 (UTC)
  • 06-08-2019 23:05:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4660, 12.4530 at 8 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.

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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
Otricoli TR 5 1869 1869
Orte VT 5 8923 10792
Narni TR 8 19785 30577
Penna in Teverina TR 9 1099 31676
Vasanello VT 10 4068 35744
Amelia TR 11 11897 47641
Gallese VT 11 2849 50490
Giove TR 12 1928 52418
Bassano in Teverina VT 12 1313 53731
Calvi dell'Umbria TR 12 1856 55587
Magliano Sabina RI 12 3774 59361
Attigliano TR 14 2028 61389
Corchiano VT 15 3869 65258
Lugnano in Teverina TR 16 1494 66752
Configni RI 16 633 67385
Montebuono RI 16 883 68268
Collevecchio RI 17 1577 69845
Bomarzo VT 17 1805 71650
Tarano RI 17 1444 73094
Vignanello VT 17 4652 77746
Vacone RI 18 256 78002
Stroncone TR 18 4917 82919
Vallerano VT 18 2621 85540
San Gemini TR 18 5018 90558
Soriano nel Cimino VT 19 8403 98961
Alviano TR 19 1463 100424
Terni TR 19 111501 211925
Fabrica di Roma VT 19 8340 220265
Torri in Sabina RI 20 1256 221521
Civita Castellana VT 20 16491 238012

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SW of Terni (111501 inhabitants)
29 Km E of Viterbo (67173 inhabitants)
56 Km NW of Guidonia Montecelio (88673 inhabitants)
58 Km SW of Foligno (57155 inhabitants)
63 Km NW of Tivoli (56533 inhabitants)
64 Km N of Roma (2864731 inhabitants)
68 Km NE of Civitavecchia (52991 inhabitants)
72 Km S of Perugia (166134 inhabitants)
79 Km W of L'Aquila (69753 inhabitants)
79 Km N of Fiumicino (78395 inhabitants)
89 Km N of Pomezia (62966 inhabitants)
91 Km NW of Velletri (53303 inhabitants)
98 Km N of Aprilia (73446 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
Reviewed
Rev100 		ML 1.3 2019-08-06
21:05:31		 42.4662 12.4528 8 2019-08-06
21:14:38		 Sala Sismica INGV-Roma 71227971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-06 21:05:31 ± 0.12
Latitude 42.4662 ± 0.0063
Longitude 12.4528 ± 0.0110
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71227971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 935
Semi-minor axis of confidence ellipse (meter) 491
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 118
Circular confidence region, given by single value of horizontal uncertainty (meter) 930.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55308
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 71227971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-06 21:14:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RORO.HHZ. 2019-08-06T21:07:25.16 3.0 undecidable manual Sg 14.51 0
GU.RNCA.HHZ. 2019-08-06T21:07:00.73 3.0 undecidable manual Sn -0.94 0
GU.GRAM.HHZ. 2019-08-06T21:06:55.03 3.0 undecidable manual Sg 7.62 0
IV.MBAL.EHZ. 2019-08-06T21:06:25.54 3.0 undecidable manual Pn 0.79 0
IV.EL6.EHZ. 2019-08-06T21:06:03.52 3.0 undecidable manual S -1.74 0
IT.FIE.HGZ. 2019-08-06T21:05:59.97 3.0 undecidable manual P 0.39 0
IV.GAVE.EHZ. 2019-08-06T21:05:46.60 0.6 undecidable manual S 55 43.9227 50 -0.11 63
IV.MOMA.HHZ. 2019-08-06T21:05:45.00 0.6 undecidable manual S 14 38.628 50 -0.31 61
IV.BARO.EHZ. 2019-08-06T21:05:45.90 0.3 undecidable manual S 234 40.8258 50 0 97
IV.SACS.HHZ. 2019-08-06T21:05:43.53 0.3 undecidable manual P 314 61.3941 50 0.45 85
IV.ARRO.EHZ. 2019-08-06T21:05:42.50 0.3 undecidable manual S 64 28.4493 105 0.51 89
IV.MGAB.HHZ. 2019-08-06T21:05:42.38 0.3 undecidable manual P 331 56.7987 50 0.01 94
IV.SRES.HHE. 2019-08-06T21:05:40.72 0.6 undecidable manual S 170 25.8519 106 -0.39 61
IV.GAVE.EHZ. 2019-08-06T21:05:40.65 0.3 undecidable manual P 55 43.9227 50 0.26 91
IV.MOMA.HHZ. 2019-08-06T21:05:39.27 0.3 undecidable manual P 14 38.628 50 -0.31 91
IV.BARO.EHZ. 2019-08-06T21:05:39.91 0.3 undecidable manual P 234 40.8258 50 -0.01 97
IV.CESX.HHZ. 2019-08-06T21:05:38.70 0.3 undecidable manual S 35 19.1697 112 -0.22 96
IV.ARRO.EHZ. 2019-08-06T21:05:37.45 0.3 undecidable manual P 64 28.4493 105 -0.21 95
IV.SRES.HHE. 2019-08-06T21:05:37.67 1.0 undecidable manual P 170 25.8519 106 0.51 30
IV.CESX.HHZ. 2019-08-06T21:05:35.87 0.3 undecidable manual P 35 19.1697 112 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHE. ML:1.1 0.00009884999999999999 0.2 AML other m 2019-08-06T21:05:39.25
IV.CESX.HHN. ML:1.2 0.00011949999999999999 0.18 AML other m 2019-08-06T21:05:39.16
IV.ARRO.EHE. ML:1.1 0.00007055000000000001 0.14 AML other m 2019-08-06T21:05:43.14
IV.ARRO.EHN. ML:1.3 0.0001052 0.2 AML other m 2019-08-06T21:05:44.41
IV.MOMA.HHE. ML:1.3 0.00007670000000000001 1.26 AML other m 2019-08-06T21:05:45.71
IV.GAVE.EHE. ML:1.4 0.00008275 0.18 AML other m 2019-08-06T21:05:47.66
IV.GAVE.EHN. ML:1.5 0.0000891 0.2 AML other m 2019-08-06T21:05:47.79
IV.MOMA.HHN. ML:1.2 0.00006305 0.14 AML other m 2019-08-06T21:05:47.88
IV.MGAB.HHE. ML:1.4 0.0000579 0.36 AML other m 2019-08-06T21:05:52.43
IV.MGAB.HHN. ML:1.4 0.000049850000000000006 0.92 AML other m 2019-08-06T21:05:52.52
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