Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 03-11-2021 and time 00:05:53 (UTC) in region 3 km W Baschi (TR)

A magnitude ML 1.5 earthquake occured in region: 3 km W Baschi (TR), on

  • 03-11-2021 00:05:53 (UTC)
  • 03-11-2021 01:05:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6760, 12.1800 at 6 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
Baschi TR 3 2722 2722
Castiglione in Teverina VT 4 2329 5051
Porano TR 6 1966 7017
Lubriano VT 7 909 7926
Orvieto TR 8 20630 28556
Civitella d'Agliano VT 8 1640 30196
Bagnoregio VT 9 3650 33846
Montecchio TR 9 1676 35522
Guardea TR 11 1836 37358
Graffignano VT 12 2292 39650
Celleno VT 14 1355 41005
Alviano TR 14 1463 42468
Bolsena VT 16 3991 46459
Castel Giorgio TR 17 2131 48590
Lugnano in Teverina TR 17 1494 50084
Castel Viscardo TR 17 2938 53022
Montefiascone VT 20 13432 66454
Attigliano TR 20 2028 68482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Viterbo (67173 inhabitants)
40 Km W of Terni (111501 inhabitants)
51 Km SW of Perugia (166134 inhabitants)
53 Km SW of Foligno (57155 inhabitants)
72 Km NE of Civitavecchia (52991 inhabitants)
88 Km E of Grosseto (82087 inhabitants)
88 Km NW of Guidonia Montecelio (88673 inhabitants)
91 Km N of Roma (2864731 inhabitants)
91 Km S of Arezzo (99543 inhabitants)
94 Km NW of Tivoli (56533 inhabitants)
99 Km SE of Siena (53903 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 1.5 2021-11-03
00:05:53		 42.6765 12.1798 6 2022-03-30
13:04:21		 Bollettino Sismico Italiano INGV 98381381
Reviewed
Rev100 		ML 1.5 2021-11-03
00:05:53		 42.6648 12.1563 10 2021-11-03
00:12:09		 Sala Sismica INGV-Roma 97179261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-03 00:05:53 ± 0.07
Latitude 42.6765 ± 0.0036
Longitude 12.1798 ± 0.0049
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 98381381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 361
Semi-minor axis of confidence ellipse (meter) 353
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 27
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.24102
Epicentral distance of station farthest from the epicenter (degree) 0.66010
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 98381381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-10 14:48:53

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 97179261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-03 00:12:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATMI.HHZ. 2021-11-03T00:06:17.10 0.3 undecidable manual S 6 73.2711 50 0.06 68
IV.SRES.HHZ. 2021-11-03T00:06:12.20 0.6 undecidable manual S 151 55.6998 50 -0.15 46
IV.BARO.HNZ. 2021-11-03T00:06:10.71 0.6 undecidable manual S 193 48.7179 50 0.24 46
IV.ATMI.HHZ. 2021-11-03T00:06:07.08 0.6 undecidable manual P 6 73.2711 50 -0.15 45
IV.MOMA.HHZ. 2021-11-03T00:06:06.29 0.3 undecidable manual S 66 34.8429 99 0.22 71
IV.CESX.HHZ. 2021-11-03T00:06:05.99 0.1 undecidable manual S 103 34.0437 100 0.17 96
IV.SACS.HHZ. 2021-11-03T00:06:04.15 0.1 undecidable manual S 311 29.1486 101 0 100
IV.SRES.HHZ. 2021-11-03T00:06:04.36 0.1 undecidable manual P 151 55.6998 50 -0.17 92
IV.BARO.HNZ. 2021-11-03T00:06:03.82 0.6 undecidable manual P 193 48.7179 50 0.38 45
IV.MGAB.HHZ. 2021-11-03T00:06:03.50 0.1 undecidable manual S 348 26.751 102 0.16 97
IV.MCIV.CHE. 2021-11-03T00:06:02.08 1.0 undecidable manual P 286 42.5241 98 -0.36 23
IV.MOMA.HHZ. 2021-11-03T00:06:00.51 0.1 positive manual P 66 34.8429 99 -0.39 91
IV.CESX.HHZ. 2021-11-03T00:06:00.73 0.1 positive manual P 103 34.0437 100 -0.03 99
IV.SACS.HHZ. 2021-11-03T00:05:59.85 0.1 undecidable manual P 311 29.1486 101 0.06 99
IV.MGAB.HHZ. 2021-11-03T00:05:59.22 0.1 undecidable manual P 348 26.751 102 -0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MGAB.HHN. ML:1.9 0.00047547115 0.24 AML other m 2021-11-03T00:06:05.40
IV.MGAB.HHE. ML:2.0 0.0006327209999999999 0.24 AML other m 2021-11-03T00:06:04.72
IV.SACS.HHN. ML:1.3 0.00010166304 0.24 AML other m 2021-11-03T00:06:05.79
IV.MOMA.HHE. ML:1.6 0.0001525 0.2 AML other m 2021-11-03T00:06:07.09
IV.MOMA.HHN. ML:1.4 0.00009592019 0.24 AML other m 2021-11-03T00:06:07.41
IV.CESX.HHE. ML:1.5 0.000136 0.36 AML other m 2021-11-03T00:06:08.59
IV.SACS.HHE. ML:1.3 0.0000949997 0.18 AML other m 2021-11-03T00:06:05.60
IV.CESX.HHN. ML:1.3 0.0000895 1.68 AML other m 2021-11-03T00:06:08.05
IV.ATMI.HHN. ML:1.8 0.00011115 0.34 AML other m 2021-11-03T00:06:22.24
IV.ATMI.HHE. ML:1.8 0.00009889999999999999 0.32 AML other m 2021-11-03T00:06:23.55
IV.MGAB.HNN. ML:1.9 0.0005177005 0.52 AML other m 2021-11-03T00:06:05.03
IV.MGAB.HNE. ML:2.0 0.00060875315 0.24 AML other m 2021-11-03T00:06:04.73
IV.SACS.HNN. ML:1.3 0.00011101805 0.42 AML other m 2021-11-03T00:06:04.28
IV.SACS.HNE. ML:1.4 0.00013090814 0.27 AML other m 2021-11-03T00:06:07.92
IV.MOMA.HNN. ML:1.5 0.0001316273 0.32 AML other m 2021-11-03T00:06:08.30
IV.MOMA.HNE. ML:1.6 0.00016275519999999998 0.21 AML other m 2021-11-03T00:06:07.09
IV.SRES.HHN. ML:1.3 0.000050790705 1.8 AML other m 2021-11-03T00:06:23.39
IV.SRES.HHE. ML:1.1 0.0000282369035 1 AML other m 2021-11-03T00:06:20.89
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