Earthquake with magnitude of ML 1.9 on date 26-02-2021 and time 08:51:33 (Italy) in region 3 km SE San Lorenzo Nuovo (VT)

A magnitude ML 1.9 earthquake occured in region: 3 km SE San Lorenzo Nuovo (VT), on

  • 26-02-2021 07:51:33 (UTC)
  • 26-02-2021 08:51:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6660, 11.9320 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Lorenzo Nuovo VT 3 2091 2091
Grotte di Castro VT 5 2683 4774
Bolsena VT 5 3991 8765
Castel Giorgio TR 6 2131 10896
Gradoli VT 7 1353 12249
Latera VT 9 836 13085
Onano VT 10 995 14080
Acquapendente VT 10 5506 19586
Castel Viscardo TR 12 2938 22524
Capodimonte VT 13 1731 24255
Proceno VT 13 557 24812
Valentano VT 14 2868 27680
Porano TR 14 1966 29646
Marta VT 14 3499 33145
Bagnoregio VT 14 3650 36795
Lubriano VT 15 909 37704
Orvieto TR 16 20630 58334
Montefiascone VT 16 13432 71766
Allerona TR 17 1794 73560
Sorano GR 18 3428 76988
Piansano VT 18 2079 79067
Ischia di Castro VT 20 2326 81393
Celleno VT 20 1355 82748

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Viterbo (67173 inhabitants)
60 Km W of Terni (111501 inhabitants)
62 Km SW of Perugia (166134 inhabitants)
65 Km N of Civitavecchia (52991 inhabitants)
68 Km E of Grosseto (82087 inhabitants)
71 Km W of Foligno (57155 inhabitants)
88 Km SE of Siena (53903 inhabitants)
89 Km S of Arezzo (99543 inhabitants)
97 Km NW of Roma (2864731 inhabitants)
99 Km NW of Guidonia Montecelio (88673 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 1.9 2021-02-26
07:51:33
42.6655 11.9318 7 2021-07-12
16:55:01
Bollettino Sismico Italiano INGV 87897971
Reviewed
Rev100
ML 2.1 2021-02-26
07:51:33
42.6612 11.9483 5 2021-02-26
08:07:01
Sala Sismica INGV-Roma 87494731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-26 07:51:33 ± 0.11
Latitude 42.6655 ± 0.0054
Longitude 11.9318 ± 0.0061
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87897971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 498
Semi-minor axis of confidence ellipse (meter) 488
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 327
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.73744
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 18
Type of magnitude ML
Reference to an origin 87494731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-26 08:07:01

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 26
Type of magnitude ML
Reference to an origin 87897971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-16 16:11:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2021-02-26T07:51:56.09 0.6 undecidable manual S 2 73.6707 50 -0.15 45
IV.TOLF.HHN. 2021-02-26T07:51:54.64 0.6 undecidable manual S 175 66.9774 50 0.2 45
IV.MMO1.EHZ. 2021-02-26T07:51:52.63 3.0 negative manual P 1.15 0
IT.GNU.HGE. 2021-02-26T07:51:51.08 1.0 undecidable manual S 73 54.2013 50 0.03 24
IV.MOMA.HHZ. 2021-02-26T07:51:51.42 0.6 undecidable manual S 73 54.2013 50 0.38 44
IV.BARO.HNE. 2021-02-26T07:51:48.93 0.3 undecidable manual S 168 47.3193 50 -0.28 68
IV.MURB.HHZ. 2021-02-26T07:51:48.01 0.3 undecidable manual P 36 81.8514 50 0.28 64
IV.ARCI.HHZ. 2021-02-26T07:51:47.71 0.6 undecidable manual S 299 42.5241 50 -0.21 47
IV.ARRO.EHZ. 2021-02-26T07:51:46.33 0.3 undecidable manual P 98 68.7756 50 0.63 60
IV.TOLF.HHN. 2021-02-26T07:51:45.11 0.3 undecidable manual P 175 66.9774 50 -0.31 66
IV.CAFI.HHZ. 2021-02-26T07:51:45.91 0.3 undecidable manual P 2 73.6707 50 -0.55 61
IV.CESX.HHZ. 2021-02-26T07:51:44.02 1.0 undecidable manual P 97 53.8017 50 0.62 21
IV.MOMA.HHZ. 2021-02-26T07:51:43.37 0.3 undecidable manual P 73 54.2013 50 -0.09 70
TV.SF04.EHZ. 2021-02-26T07:51:43.51 1.0 undecidable manual S 311 29.0487 103 0.07 25
IV.MGAB.HHZ. 2021-02-26T07:51:43.90 0.3 undecidable manual S 28 31.0467 102 -0.22 71
IT.GNU.HGE. 2021-02-26T07:51:43.82 1.0 undecidable manual P 73 54.2013 50 0.36 22
TV.SF14.HHN. 2021-02-26T07:51:42.50 0.6 undecidable manual S 291 27.6501 103 -0.47 45
TV.SF03.EHN. 2021-02-26T07:51:42.33 0.6 undecidable manual S 307 25.1526 105 0.2 48
IV.BARO.HNE. 2021-02-26T07:51:42.21 0.3 undecidable manual P 168 47.3193 50 -0.19 70
IV.ARCI.HHZ. 2021-02-26T07:51:41.87 0.3 undecidable manual P 299 42.5241 50 0.21 70
IV.MCIV.CHZ. 2021-02-26T07:51:41.95 0.6 undecidable manual S 301 24.2535 105 0.12 49
IV.SACS.HHZ. 2021-02-26T07:51:40.78 0.6 undecidable manual S 355 20.4684 108 0.23 48
IV.MGAB.HHZ. 2021-02-26T07:51:39.00 0.1 positive manual P 28 31.0467 102 -0.47 90
TV.SF04.EHZ. 2021-02-26T07:51:39.34 0.3 undecidable manual P 311 29.0487 103 0.27 71
TV.SF03.EHN. 2021-02-26T07:51:38.24 0.3 undecidable manual P 307 25.1526 105 -0.07 74
IV.MCIV.CHZ. 2021-02-26T07:51:38.78 0.3 undecidable manual P 301 24.2535 105 0.64 64
TV.SF14.HHN. 2021-02-26T07:51:38.73 0.3 undecidable manual P 291 27.6501 103 -0.07 74
IV.SACS.HHZ. 2021-02-26T07:51:37.33 0.1 positive manual P 355 20.4684 108 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACS.HNN. ML:1.8 0.00048562404999999995 0.32 AML other m 2021-02-26T07:51:40.00
IV.SACS.HNE. ML:2.1 0.00092935245 0.1792 AML other m 2021-02-26T07:51:41.11
IV.SACS.HHE. ML:2.1 0.0009398326 0.2624 AML other m 2021-02-26T07:51:41.45
IV.SACS.HHN. ML:1.9 0.0006535 0.42 AML other m 2021-02-26T07:51:41.52
TV.SF04.EHN. ML:2.2 0.0008853591000000001 0.1984 AML other m 2021-02-26T07:51:45.08
IV.MGAB.HHE. ML:2.2 0.0007576120500000001 0.1984 AML other m 2021-02-26T07:51:45.16
TV.SF04.EHE. ML:2.2 0.0009405000000000001 0.2 AML other m 2021-02-26T07:51:45.37
IV.MGAB.HHN. ML:2.2 0.0007488245 0.3648 AML other m 2021-02-26T07:51:45.49
IV.MGAB.HNN. ML:2.1 0.0006897472 0.32 AML other m 2021-02-26T07:51:45.51
IV.MGAB.HNE. ML:2.1 0.0006910000000000001 0.86 AML other m 2021-02-26T07:51:45.97
IV.MOMA.HHN. ML:1.7 0.000125 0.58 AML other m 2021-02-26T07:51:52.34
IV.MOMA.HNN. ML:1.7 0.0001277056 0.16 AML other m 2021-02-26T07:51:53.26
IV.MOMA.HHE. ML:1.8 0.0001545681 0.16 AML other m 2021-02-26T07:51:54.01
IV.MOMA.HNE. ML:1.8 0.00014620125 0.16 AML other m 2021-02-26T07:51:54.02
IV.CSNT.HHE. ML:1.2 0.000014655245000000001 0.2176 AML other m 2021-02-26T07:51:56.76
IV.CAFI.HHE. ML:1.6 0.00006113743000000001 0.2048 AML other m 2021-02-26T07:51:56.85
IV.CAFI.HHN. ML:1.6 0.00005975 0.22 AML other m 2021-02-26T07:51:58.57
IV.ARRO.EHN. ML:1.5 0.000048006775 0.256 AML other m 2021-02-26T07:51:59.32
IV.ARRO.EHE. ML:1.5 0.00005955 0.2 AML other m 2021-02-26T07:52:00.56
IV.CSNT.HHN. ML:1.0 0.0000121002545 0.32 AML other m 2021-02-26T07:52:00.80
IV.MURB.HHE. ML:2.6 0.0005785660500000001 0.3008 AML other m 2021-02-26T07:52:02.32
IV.MURB.HNE. ML:2.6 0.0005814999999999999 0.3 AML other m 2021-02-26T07:52:02.34
IV.MURB.HHN. ML:2.8 0.0008555 0.28 AML other m 2021-02-26T07:52:02.67
IV.MURB.HNN. ML:2.8 0.0008049999999999999 0.3 AML other m 2021-02-26T07:52:02.68
IV.CASP.HHE. ML:1.3 0.000022563955 0.5184 AML other m 2021-02-26T07:52:05.96
IV.CASP.HHN. ML:1.4 0.000027680675000000002 0.4992 AML other m 2021-02-26T07:52:07.88
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
Waveforms Seismic signals in miniseed + resp format Download