Earthquake with magnitude of ML 1.4 on date 06-01-2021 and time 23:46:53 (UTC) in region 4 km E Guardea (TR)

A magnitude ML 1.4 earthquake occured in region: 4 km E Guardea (TR), on

  • 06-01-2021 23:46:53 (UTC)
  • 07-01-2021 00:46:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.618, 12.344 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Guardea TR 4 1836 1836
Lugnano in Teverina TR 5 1494 3330
Alviano TR 5 1463 4793
Montecchio TR 7 1676 6469
Avigliano Umbro TR 8 2558 9027
Amelia TR 9 11897 20924
Castiglione in Teverina VT 12 2329 23253
Baschi TR 12 2722 25975
Giove TR 12 1928 27903
Attigliano TR 12 2028 29931
Graffignano VT 12 2292 32223
Montecastrilli TR 12 5022 37245
Civitella d'Agliano VT 13 1640 38885
Penna in Teverina TR 14 1099 39984
Bomarzo VT 16 1805 41789
San Gemini TR 17 5018 46807
Bassano in Teverina VT 17 1313 48120
Narni TR 18 19785 67905
Orte VT 18 8923 76828
Acquasparta TR 19 4778 81606
Celleno VT 19 1355 82961
Todi PG 19 16851 99812
Lubriano VT 19 909 100721

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Terni (111501 inhabitants)
30 Km NE of Viterbo (67173 inhabitants)
48 Km SW of Foligno (57155 inhabitants)
55 Km S of Perugia (166134 inhabitants)
74 Km NE of Civitavecchia (52991 inhabitants)
76 Km NW of Guidonia Montecelio (88673 inhabitants)
81 Km N of Roma (2864731 inhabitants)
82 Km NW of Tivoli (56533 inhabitants)
91 Km W of L'Aquila (69753 inhabitants)
94 Km N of Fiumicino (78395 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 2021-01-06
23:46:53
42.618 12.344 9 2021-07-12
16:55:00
Bollettino Sismico Italiano INGV 87627341
Reviewed
Rev100
ML 1.4 2021-01-06
23:46:54
42.6133 12.3568 11 2021-01-06
23:52:28
Sala Sismica INGV-Roma 86060961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-06 23:46:53 ± 0.09
Latitude 42.6180 ± 0.0036
Longitude 12.3440 ± 0.0061
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87627341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 440
Semi-minor axis of confidence ellipse (meter) 316
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
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) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.17897
Epicentral distance of station farthest from the epicenter (degree) 0.76262
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 87627341
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-02 12:04:07

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 86060961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-06 23:52:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2021-01-06T23:47:08.81 0.3 undecidable manual P 339 0.7626 50 0.13 66
IV.SRES.HHZ. 2021-01-06T23:47:08.64 0.3 undecidable manual S 162 0.4002 50 -0.11 72
IV.FDMO.HHZ. 2021-01-06T23:47:07.76 0.3 undecidable manual P 52 0.6871 50 0.37 64
IV.MGAB.HHZ. 2021-01-06T23:47:06.96 0.3 undecidable manual S 330 0.3399 50 -0.01 74
IV.NRCA.HHZ. 2021-01-06T23:47:06.07 0.1 undecidable manual P 69 0.6052 50 0.08 92
IV.ARRO.EHZ. 2021-01-06T23:47:05.96 0.6 undecidable manual S 97 0.313 50 -0.2 48
IV.BARO.HNZ. 2021-01-06T23:47:03.02 0.3 undecidable manual P 210 0.4281 50 0.06 72
IV.MOMA.HHZ. 2021-01-06T23:47:03.66 0.3 undecidable manual S 42 0.2491 107 -0.32 71
IV.SRES.HHZ. 2021-01-06T23:47:02.34 0.1 undecidable manual P 162 0.4002 50 -0.13 95
IV.SACS.HHZ. 2021-01-06T23:47:02.31 0.1 undecidable manual P 306 0.3939 50 -0.06 97
IV.ARRO.EHZ. 2021-01-06T23:47:01.06 0.1 undecidable manual P 97 0.313 50 0.08 98
IV.CESX.HHZ. 2021-01-06T23:47:01.40 0.3 undecidable manual S 93 0.179 114 -0.04 76
IV.MGAB.HHZ. 2021-01-06T23:47:01.34 0.1 undecidable manual P 330 0.3399 50 -0.11 97
IV.MOMA.HHZ. 2021-01-06T23:46:59.76 0.1 undecidable manual P 42 0.2491 107 0.04 100
IV.CESX.HHZ. 2021-01-06T23:46:58.44 0.1 undecidable manual P 93 0.179 114 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.3 0.000146 0.42 AML other m 2021-01-06T23:47:02.16
IV.CESX.HHE. ML:1.2 0.000128 1.4 AML other m 2021-01-06T23:47:03.86
IV.MOMA.HHN. ML:1.3 9.865E-5 0.24 AML other m 2021-01-06T23:47:04.30
IV.MOMA.HHE. ML:1.4 0.0001385 0.76 AML other m 2021-01-06T23:47:05.22
IV.ARRO.EHN. ML:1.4 9.505E-5 1.78 AML other m 2021-01-06T23:47:07.10
IV.MGAB.HHN. ML:1.9 0.000272 0.52 AML other m 2021-01-06T23:47:08.42
IV.MGAB.HNN. ML:2 0.000346 0.52 AML other m 2021-01-06T23:47:08.16
IV.MGAB.HHE. ML:2 0.0003505 1 AML other m 2021-01-06T23:47:08.05
IV.MGAB.HNE. ML:1.9 0.000293 1.58 AML other m 2021-01-06T23:47:08.16
IV.ARRO.EHE. ML:1.3 7.91E-5 0.2 AML other m 2021-01-06T23:47:09.47
IV.SRES.HHE. ML:1.5 9.68E-5 1.22 AML other m 2021-01-06T23:47:10.17
IV.SRES.HHN. ML:1.3 5.51E-5 0.72 AML other m 2021-01-06T23:47:10.76
IV.NRCA.HHN. ML:1.4 3.81E-5 0.14 AML other m 2021-01-06T23:47:17.61
IV.NRCA.HHE. ML:1.5 5.375E-5 0.68 AML other m 2021-01-06T23:47:17.63
IV.FDMO.HHN. ML:1.2 2.605E-5 1.58 AML other m 2021-01-06T23:47:23.08
IV.FDMO.HHE. ML:1.2 2.25E-5 0.5 AML other m 2021-01-06T23:47:23.66
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download