Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 29-09-2023 and time 16:27:12 (Italy) in region 2 km SE San Lorenzo Nuovo (VT)

A magnitude ML 2.0 earthquake occured in region: 2 km SE San Lorenzo Nuovo (VT), on

  • 29-09-2023 14:27:12 (UTC)
  • 29-09-2023 16:27:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6710, 11.9180 at 5 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
Gradoli VT 6 1353 6127
Bolsena VT 6 3991 10118
Castel Giorgio TR 7 2131 12249
Latera VT 9 836 13085
Onano VT 9 995 14080
Acquapendente VT 9 5506 19586
Castel Viscardo TR 12 2938 22524
Proceno VT 12 557 23081
Capodimonte VT 14 1731 24812
Valentano VT 14 2868 27680
Marta VT 15 3499 31179
Porano TR 15 1966 33145
Bagnoregio VT 16 3650 36795
Lubriano VT 16 909 37704
Allerona TR 16 1794 39498
Orvieto TR 17 20630 60128
Sorano GR 17 3428 63556
Montefiascone VT 17 13432 76988
Piansano VT 18 2079 79067
Ischia di Castro VT 19 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)
62 Km SW of Perugia (166134 inhabitants)
65 Km N of Civitavecchia (52991 inhabitants)
66 Km E of Grosseto (82087 inhabitants)
72 Km W of Foligno (57155 inhabitants)
86 Km SE of Siena (53903 inhabitants)
89 Km S of Arezzo (99543 inhabitants)
98 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 2.0 2023-09-29
14:27:12		 42.671 11.9182 5 2023-09-29
15:17:23		 Sala Sismica INGV-Roma 121587131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-29 14:27:12 ± 0.13
Latitude 42.6710 ± 0.0054
Longitude 11.9182 ± 0.0073
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121587131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 599
Semi-minor axis of confidence ellipse (meter) 551
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 217
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.87144
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 13
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 121587131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-29 15:17:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.STN3.EHZ.02 2023-09-29T14:29:07.42 3.0 undecidable manual Sg 6.78 0
MN.TRI.HHZ. 2023-09-29T14:28:52.27 3.0 undecidable manual Sg 5.21 0
IV.GATE.HHZ. 2023-09-29T14:28:30.36 3.0 undecidable manual Sg -4.79 0
GU.SATI.HHZ. 2023-09-29T14:28:23.00 3.0 undecidable manual Pn 0.87 0
NI.VINO.HHZ. 2023-09-29T14:28:19.21 3.0 negative manual Pg 6.12 0
IV.BAG8.EHZ. 2023-09-29T14:28:16.79 3.0 negative manual Pg 9.09 0
GU.RORO.HHZ. 2023-09-29T14:28:14.22 3.0 undecidable manual Pg 7.26 0
IV.RCAV.EHZ. 2023-09-29T14:27:51.28 3.0 undecidable manual S -9.99 0
IV.MURB.HHZ. 2023-09-29T14:27:39.01 3.0 undecidable manual S -1.48 0
IV.MF5.EHZ. 2023-09-29T14:27:38.41 3.0 positive manual P -2.38 0
IV.ATMI.HHZ. 2023-09-29T14:27:37.96 0.3 undecidable manual S 21 78.8655 50 0.76 56
IV.CAFI.HHZ. 2023-09-29T14:27:35.46 0.3 undecidable manual S 3 73.1712 50 -0.21 69
IV.CSP1.EHZ. 2023-09-29T14:27:33.50 3.0 negative manual P -4.18 0
IV.SNTG.HHZ. 2023-09-29T14:27:32.20 3.0 undecidable manual P -3 0
IV.PIEI.HHZ. 2023-09-29T14:27:32.22 3.0 undecidable manual P -2.04 0
IV.MML1.EHZ. 2023-09-29T14:27:31.31 3.0 negative manual P -3.38 0
IV.NRCA.HHZ. 2023-09-29T14:27:30.66 3.0 positive manual P -5.5 0
IV.MOMA.HHZ. 2023-09-29T14:27:30.76 0.3 undecidable manual S 74 55.1004 50 -0.1 72
IV.ATPI.EHZ. 2023-09-29T14:27:30.31 3.0 negative manual P -1.64 0
IV.FDMO.HHZ. 2023-09-29T14:27:30.13 3.0 undecidable manual P -5.8 0
IV.ATFO.HHZ. 2023-09-29T14:27:29.25 3.0 undecidable manual P -2.96 0
IV.BADI.EHZ. 2023-09-29T14:27:29.54 0.3 undecidable manual P 16 96.7254 50 0.07 67
IV.ORTE.EHE. 2023-09-29T14:27:28.37 0.6 undecidable manual S 121 44.7219 97 0.37 47
IV.BARO.EHZ. 2023-09-29T14:27:28.91 0.6 undecidable manual S 167 48.2184 50 -0.1 49
IV.CASP.HHZ. 2023-09-29T14:27:28.69 0.3 undecidable manual P 279 86.8464 50 0.75 56
IV.MURB.HHZ. 2023-09-29T14:27:27.29 3.0 negative manual P -3.12 0
IV.ARCI.HHZ. 2023-09-29T14:27:26.57 0.3 undecidable manual S 299 41.2254 97 -0.25 72
IV.ASSB.HHZ. 2023-09-29T14:27:26.39 3.0 positive manual P -3.76 0
IV.ATMI.HHZ. 2023-09-29T14:27:26.49 0.1 undecidable manual P 21 78.8655 50 -0.23 90
IV.CAFI.HHZ. 2023-09-29T14:27:25.13 0.1 undecidable manual P 3 73.1712 50 -0.7 79
IV.CESX.HHZ. 2023-09-29T14:27:23.46 0.3 undecidable manual P 97 55.0005 50 0.42 67
IV.MGAB.HHZ. 2023-09-29T14:27:23.50 0.3 undecidable manual S 30 31.1466 99 0.16 75
TV.SF11.HHZ. 2023-09-29T14:27:22.65 0.6 undecidable manual S 318 29.3484 100 -0.08 50
IV.MOMA.HHZ. 2023-09-29T14:27:22.87 0.3 undecidable manual P 74 55.1004 50 -0.19 70
IV.ORTE.EHE. 2023-09-29T14:27:21.49 0.6 undecidable manual P 121 44.7219 97 0.09 50
IV.BARO.EHZ. 2023-09-29T14:27:21.77 0.1 undecidable manual P 167 48.2184 50 -0.22 95
IV.MCIV.CHZ. 2023-09-29T14:27:20.88 0.3 undecidable manual S 301 23.0547 103 0.3 73
IV.ARCI.HHZ. 2023-09-29T14:27:20.42 0.1 undecidable manual P 299 41.2254 97 -0.3 94
IV.SACS.HNZ. 2023-09-29T14:27:19.45 0.3 undecidable manual S 358 19.7691 105 -0.03 77
IV.MGAB.HHZ. 2023-09-29T14:27:18.49 0.1 undecidable manual P 30 31.1466 99 -0.22 97
TV.SF11.HHZ. 2023-09-29T14:27:18.25 0.1 undecidable manual P 318 29.3484 100 -0.11 100
IV.MCIV.CHZ. 2023-09-29T14:27:17.44 0.1 undecidable manual P 301 23.0547 103 0.32 97
IV.SACS.HNZ. 2023-09-29T14:27:16.75 0.1 undecidable manual P 358 19.7691 105 0.26 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCIV.CHN. ML:1.9 0.00055614305 0.1408 AML other m 2023-09-29T14:27:21.68
TV.SF11.HHN. ML:2.2 0.00079141235 0.3584 AML other m 2023-09-29T14:27:23.33
IV.MCIV.CHE. ML:1.8 0.0004671767 0.128 AML other m 2023-09-29T14:27:21.80
TV.SF11.HHE. ML:2.1 0.00068281455 0.1984 AML other m 2023-09-29T14:27:23.17
IV.MGAB.HHE. ML:2.3 0.00094670985 0.1408 AML other m 2023-09-29T14:27:24.22
IV.MGAB.HHN. ML:1.8 0.00033572915000000005 0.2048 AML other m 2023-09-29T14:27:24.04
IV.ARCI.HHE. ML:1.6 0.00013727129999999997 0.2816 AML other m 2023-09-29T14:27:27.45
IV.CASP.HNE. ML:2.0 0.00011326066500000001 0.5888 AML other m 2023-09-29T14:27:29.41
IV.ARCI.HHN. ML:1.7 0.00018455935 0.1792 AML other m 2023-09-29T14:27:27.55
IV.BARO.HNN. ML:2.2 0.00042091160000000004 0.4608 AML other m 2023-09-29T14:27:29.83
IV.BARO.EHN. ML:2.0 0.00026290084999999996 0.2816 AML other m 2023-09-29T14:27:29.20
IV.MOMA.HHE. ML:2.1 0.0003013946 0.2368 AML other m 2023-09-29T14:27:32.96
IV.MOMA.HNE. ML:2.2 0.00033867665 0.1792 AML other m 2023-09-29T14:27:32.97
IV.MOMA.HNN. ML:2.2 0.00035316484999999996 0.2688 AML other m 2023-09-29T14:27:33.31
IV.PIEI.HHN. ML:1.8 0.000054385215000000003 0.32 AML other m 2023-09-29T14:27:52.73
IV.PARC.HHN. ML:2.0 0.00007619947 0.3776 AML other m 2023-09-29T14:27:54.23
IV.MOMA.HHN. ML:2.0 0.00025757005 0.2816 AML other m 2023-09-29T14:27:34.50
IV.BARO.EHE. ML:1.0 0.000030682715 0.2048 AML other m 2023-09-29T14:27:30.47
IV.BARO.HNE. ML:2.1 0.00035401460000000003 0.4224 AML other m 2023-09-29T14:27:30.42
IV.CAFI.HHN. ML:1.7 0.000076624805 0.1792 AML other m 2023-09-29T14:27:37.62
IV.CAFI.HHE. ML:1.9 0.00012449267499999999 0.2048 AML other m 2023-09-29T14:27:37.31
IV.CASP.HHE. ML:1.7 0.00005849453 0.5056 AML other m 2023-09-29T14:27:44.13
IV.ASSB.HHN. ML:1.9 0.00012928493999999998 0.2816 AML other m 2023-09-29T14:27:39.16
IV.ASSB.HHE. ML:1.8 0.00009767103999999998 0.256 AML other m 2023-09-29T14:27:39.25
IV.CASP.HNN. ML:2.1 0.00016071539 0.5184 AML other m 2023-09-29T14:27:43.16
IV.ATFO.HHN. ML:2.2 0.000161242 0.32 AML other m 2023-09-29T14:27:44.20
IV.ATFO.HHE. ML:2.3 0.00023959324999999997 0.4032 AML other m 2023-09-29T14:27:45.24
IV.ATPI.EHN. ML:2.1 0.0001391199 0.4224 AML other m 2023-09-29T14:27:45.26
IV.CASP.HHN. ML:1.8 0.00007532057 0.4608 AML other m 2023-09-29T14:27:43.10
IV.ATPI.EHE. ML:2.2 0.0001645969 0.6208 AML other m 2023-09-29T14:27:46.79
IV.FDMO.HHN. ML:1.8 0.000065764285 0.3584 AML other m 2023-09-29T14:27:48.23
IV.MML1.EHE. ML:1.7 0.00005118336 0.32 AML other m 2023-09-29T14:27:45.70
IV.NRCA.HHN. ML:2.0 0.00009368205999999999 0.3392 AML other m 2023-09-29T14:27:48.23
IV.SNTG.HHN. ML:1.9 0.00007620000000000001 0.56 AML other m 2023-09-29T14:27:49.45
IV.CSP1.EHE. ML:2.4 0.00020782715000000002 0.4992 AML other m 2023-09-29T14:27:50.28
IV.FDMO.HHE. ML:1.8 0.00005920298 0.2432 AML other m 2023-09-29T14:27:47.49
IV.PIEI.HHE. ML:2.0 0.00009120000000000001 1 AML other m 2023-09-29T14:27:50.74
IV.NRCA.HHE. ML:1.8 0.00006243335500000001 0.1216 AML other m 2023-09-29T14:27:49.24
IV.SNTG.HHE. ML:1.9 0.00006915413500000001 0.48 AML other m 2023-09-29T14:27:48.31
IV.CSP1.EHN. ML:2.6 0.00031782255 0.4608 AML other m 2023-09-29T14:27:52.44
IV.MML1.EHN. ML:1.8 0.00007033042 0.3968 AML other m 2023-09-29T14:27:47.29
IV.PARC.HHE. ML:1.6 0.000032328534999999996 0.2368 AML other m 2023-09-29T14:27:48.45
IV.MF5.EHE. ML:2.4 0.00016052005 0.7168 AML other m 2023-09-29T14:28:02.92
IV.MF5.EHN. ML:2.3 0.000124071 0.6016 AML other m 2023-09-29T14:28:04.23
IV.SACS.HHE. ML:2.0 0.0008915547500000001 0.1856 AML other m 2023-09-29T14:27:22.59
IV.SACS.HHN. ML:2.2 0.0012196645 0.1792 AML other m 2023-09-29T14:27:20.88
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