Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 22-02-2024 and time 08:52:02 (Italy) in region 2 km SE San Lorenzo Nuovo (VT)

A magnitude ML 1.7 earthquake occured in region: 2 km SE San Lorenzo Nuovo (VT), on

  • 22-02-2024 07:52:02 (UTC)
  • 22-02-2024 08:52:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6760, 11.9210 at 10 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
San Lorenzo Nuovo VT 2 2091 2091
Grotte di Castro VT 4 2683 4774
Castel Giorgio TR 6 2131 6905
Gradoli VT 6 1353 8258
Bolsena VT 7 3991 12249
Onano VT 9 995 13244
Acquapendente VT 9 5506 18750
Latera VT 9 836 19586
Castel Viscardo TR 11 2938 22524
Proceno VT 12 557 23081
Capodimonte VT 14 1731 24812
Valentano VT 14 2868 27680
Porano TR 15 1966 29646
Bagnoregio VT 16 3650 33296
Marta VT 16 3499 36795
Allerona TR 16 1794 38589
Lubriano VT 16 909 39498
Orvieto TR 16 20630 60128
Sorano GR 17 3428 63556
Montefiascone VT 18 13432 76988
Piansano VT 19 2079 79067
Ischia di Castro VT 20 2326 81393

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Viterbo (67173 inhabitants)
61 Km W of Terni (111501 inhabitants)
61 Km SW of Perugia (166134 inhabitants)
66 Km N of Civitavecchia (52991 inhabitants)
67 Km E of Grosseto (82087 inhabitants)
71 Km W of Foligno (57155 inhabitants)
86 Km SE of Siena (53903 inhabitants)
88 Km S of Arezzo (99543 inhabitants)
99 Km NW of Roma (2864731 inhabitants)
100 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
Reviewed
Rev100 		ML 1.7 2024-02-22
07:52:02		 42.6763 11.9208 10 2024-02-22
08:00:59		 Sala Sismica INGV-Roma 125438521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-22 07:52:02 ± 0.17
Latitude 42.6763 ± 0.0081
Longitude 11.9208 ± 0.0171
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125438521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1444
Semi-minor axis of confidence ellipse (meter) 712
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 1440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.73025
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 125438521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-22 08:00:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATLO.HNZ. 2024-02-22T07:52:17.33 0.6 undecidable manual P 29 81.0522 50 0.56 40
IV.CAFI.HHZ. 2024-02-22T07:52:15.02 0.6 undecidable manual P 3 72.4719 50 -0.43 42
IV.MGAB.HHZ. 2024-02-22T07:52:13.91 0.6 undecidable manual S 31 30.4473 50 0.35 46
TV.SF11.HHZ. 2024-02-22T07:52:12.53 0.6 undecidable manual S 317 29.0487 50 -0.65 42
IV.ARCI.HHZ. 2024-02-22T07:52:11.37 0.3 undecidable manual P 298 41.1255 50 0.75 60
IV.BARO.EHZ. 2024-02-22T07:52:11.62 0.3 undecidable manual P 167 48.7179 50 -0.16 70
IV.SACS.HHZ. 2024-02-22T07:52:10.22 0.6 undecidable manual S 357 19.1697 117 0.04 50
IV.MGAB.HHZ. 2024-02-22T07:52:08.62 0.3 undecidable manual P 31 30.4473 50 -0.35 69
IV.LATE.HHZ. 2024-02-22T07:52:08.04 0.6 undecidable manual S 234 11.7771 130 0 51
TV.SF11.HHZ. 2024-02-22T07:52:08.82 0.6 undecidable manual P 317 29.0487 50 0.07 49
IV.SACS.HHZ. 2024-02-22T07:52:06.95 0.1 undecidable manual P 357 19.1697 117 -0.07 100
IV.LATE.HHZ. 2024-02-22T07:52:05.78 0.3 undecidable manual P 234 11.7771 130 0 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LATE.HHN. ML:2.0 0.0012900000000000001 0.62 AML other m 2024-02-22T07:52:10.75
IV.LATE.HHE. ML:1.9 0.001008 0.24 AML other m 2024-02-22T07:52:10.95
IV.SACS.HHE. ML:1.7 0.00035950000000000006 0.18 AML other m 2024-02-22T07:52:10.82
IV.SACS.HNE. ML:1.7 0.000364 0.18 AML other m 2024-02-22T07:52:10.91
IV.SACS.HHN. ML:1.6 0.000273 0.3 AML other m 2024-02-22T07:52:12.17
IV.SACS.HNN. ML:1.5 0.00025550000000000003 1.5 AML other m 2024-02-22T07:52:12.18
TV.SF11.HHE. ML:1.7 0.000246 0.22 AML other m 2024-02-22T07:52:13.52
TV.SF11.HHN. ML:1.8 0.000322 0.36 AML other m 2024-02-22T07:52:13.73
IV.MGAB.HHE. ML:1.6 0.00019350000000000001 0.92 AML other m 2024-02-22T07:52:14.36
IV.MGAB.HHN. ML:1.5 0.00015014105 0.16 AML other m 2024-02-22T07:52:16.28
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