Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 07-06-2023 and time 20:42:23 (Italy) in region 3 km W Montefranco (TR)

A magnitude ML 1.8 earthquake occured in region: 3 km W Montefranco (TR), on

  • 07-06-2023 18:42:23 (UTC)
  • 07-06-2023 20:42:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6070, 12.7380 at 11 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
Montefranco TR 3 1276 1276
Arrone TR 4 2763 4039
Ferentillo TR 5 1913 5952
Terni TR 9 111501 117453
Polino TR 9 233 117686
Labro RI 10 374 118060
Morro Reatino RI 12 373 118433
Colli sul Velino RI 12 533 118966
Stroncone TR 13 4917 123883
Rivodutri RI 14 1253 125136
Scheggino PG 14 461 125597
Spoleto PG 14 38218 163815
San Gemini TR 16 5018 168833
Sant'Anatolia di Narco PG 16 564 169397
Poggio Bustone RI 17 2055 171452
Greccio RI 17 1558 173010
Acquasparta TR 18 4778 177788
Monteleone di Spoleto PG 18 599 178387
Leonessa RI 19 2435 180822

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NE of Terni (111501 inhabitants)
39 Km S of Foligno (57155 inhabitants)
56 Km E of Viterbo (67173 inhabitants)
61 Km W of L'Aquila (69753 inhabitants)
63 Km SE of Perugia (166134 inhabitants)
67 Km N of Guidonia Montecelio (88673 inhabitants)
72 Km N of Tivoli (56533 inhabitants)
79 Km W of Teramo (54892 inhabitants)
82 Km N of Roma (2864731 inhabitants)
96 Km NE of Civitavecchia (52991 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 1.8 2023-06-07
18:42:23		 42.6067 12.7382 11 2023-06-07
18:52:39		 Sala Sismica INGV-Roma 118191121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-06-07 18:42:23 ± 0.06
Latitude 42.6067 ± 0.0054
Longitude 12.7382 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 118191121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 573
Semi-minor axis of confidence ellipse (meter) 359
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 191
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.67449
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 43
Type of magnitude ML
Reference to an origin 118191121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-06-07 18:52:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2023-06-07T18:42:37.20 0.6 undecidable manual P 54 72.372 50 0.71 37
IV.GUMA.HHZ. 2023-06-07T18:42:36.58 0.3 undecidable manual P 44 70.1742 50 0.43 62
IV.MURB.HHZ. 2023-06-07T18:42:36.98 0.3 undecidable manual P 347 74.8695 50 0.1 65
IV.TERO.HHZ. 2023-06-07T18:42:36.65 0.3 undecidable manual P 88 70.6737 50 0.42 62
IV.SACS.HHN. 2023-06-07T18:42:36.92 0.3 undecidable manual P 292 72.6717 50 0.38 62
IV.CSP1.EHZ. 2023-06-07T18:42:35.60 0.3 undecidable manual P 35 65.8896 50 0.12 66
IV.ATCC.EHZ. 2023-06-07T18:42:35.36 0.1 undecidable manual P 353 64.6908 50 0.06 90
IV.MGAB.HHZ. 2023-06-07T18:42:34.92 0.3 undecidable manual P 304 61.2942 50 0.14 67
IV.MML1.EHZ. 2023-06-07T18:42:34.40 0.3 undecidable manual P 19 59.3961 50 -0.09 68
IV.MMO1.HNN. 2023-06-07T18:42:34.16 0.6 undecidable manual P 56 57.8976 50 -0.1 45
IV.FDMO.HHZ. 2023-06-07T18:42:33.83 0.3 undecidable manual P 31 55.5 50 -0.06 68
7F.SIB1.EHN. 2023-06-07T18:42:33.60 0.3 undecidable manual P 53 53.8017 50 -0.03 69
IV.FEMA.HNZ. 2023-06-07T18:42:33.01 0.3 undecidable manual P 33 46.9197 50 0.44 64
7F.SIB2.EHZ. 2023-06-07T18:42:33.72 0.3 undecidable manual P 55 55.7997 50 -0.22 66
IT.GNU.HGE. 2023-06-07T18:42:33.13 0.3 undecidable manual S 328 25.8519 50 -0.18 70
7F.SIB3.EHZ. 2023-06-07T18:42:33.17 0.3 undecidable manual P 55 52.6029 50 -0.27 66
IV.FIAM.HHZ. 2023-06-07T18:42:32.45 0.3 undecidable manual P 140 48.7179 50 -0.39 65
IV.SRES.HHE. 2023-06-07T18:42:32.29 1.0 undecidable manual P 205 45.0216 50 0.01 24
IV.ASSB.HHZ. 2023-06-07T18:42:32.53 0.3 undecidable manual P 352 48.8178 50 -0.32 66
IT.MTCL.HGZ. 2023-06-07T18:42:32.63 0.1 undecidable manual P 26 47.9187 50 -0.09 92
IV.CESI.HHZ. 2023-06-07T18:42:32.42 0.3 undecidable manual P 17 46.2204 50 -0.04 70
IV.LNSS.HHZ. 2023-06-07T18:42:32.78 0.3 undecidable manual S 91 24.6531 50 -0.23 70
IV.NRCA.HHZ. 2023-06-07T18:42:31.27 0.3 undecidable manual P 50 39.627 50 -0.18 69
IV.RM33.HNE. 2023-06-07T18:42:31.50 0.3 undecidable manual P 105 40.4262 50 -0.06 70
IV.GAVE.EHZ. 2023-06-07T18:42:30.35 0.3 undecidable manual S 53 15.873 124 -0.12 73
IV.LNSS.HHZ. 2023-06-07T18:42:29.14 0.3 undecidable manual P 91 24.6531 50 0 73
IV.CESX.HHZ. 2023-06-07T18:42:29.28 0.1 undecidable manual S 271 12.3765 131 -0.21 95
IT.GNU.HGE. 2023-06-07T18:42:29.24 0.3 undecidable manual P 328 25.8519 50 -0.07 72
IV.GAVE.EHZ. 2023-06-07T18:42:27.64 0.3 undecidable manual P 53 15.873 124 -0.03 74
IV.ARRO.EHZ. 2023-06-07T18:42:27.69 0.1 undecidable manual S 144 3.7962 160 -0.06 100
IV.CESX.HHZ. 2023-06-07T18:42:27.09 0.1 undecidable manual P 271 12.3765 131 -0.02 99
IV.ARRO.EHZ. 2023-06-07T18:42:26.46 0.1 undecidable manual P 144 3.7962 160 0.36 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:2.0 0.00163 0.18 AML other m 2023-06-07T18:42:28.49
IV.ARRO.EHE. ML:1.9 0.0013897375 0.2688 AML other m 2023-06-07T18:42:28.45
IV.CESX.HHE. ML:1.4 0.000272 0.26 AML other m 2023-06-07T18:42:29.46
IV.CESX.HHN. ML:1.3 0.00023593360000000003 0.1536 AML other m 2023-06-07T18:42:30.44
IV.GAVE.EHE. ML:1.7 0.000472 0.26 AML other m 2023-06-07T18:42:31.31
IV.GAVE.EHN. ML:1.6 0.0003960843 0.2176 AML other m 2023-06-07T18:42:31.77
IV.LNSS.HHE. ML:2.3 0.0011360489 0.1408 AML other m 2023-06-07T18:42:33.19
IV.LNSS.HHN. ML:2.4 0.0013618109999999999 0.1664 AML other m 2023-06-07T18:42:33.27
IV.NRCA.HHN. ML:1.8 0.0002385 0.16 AML other m 2023-06-07T18:42:37.27
IV.NRCA.HHE. ML:2.0 0.0003115 0.14 AML other m 2023-06-07T18:42:37.31
IV.CESI.HHN. ML:2.1 0.0003308472 0.2432 AML other m 2023-06-07T18:42:39.73
IV.CESI.HHE. ML:1.8 0.00018834675 0.1792 AML other m 2023-06-07T18:42:39.30
IV.FIAM.HHE. ML:1.2 0.00003915 0.22 AML other m 2023-06-07T18:42:40.54
IV.ASSB.HHN. ML:1.5 0.00009052156 0.1792 AML other m 2023-06-07T18:42:40.88
IV.FIAM.HHN. ML:1.2 0.0000475 0.82 AML other m 2023-06-07T18:42:40.52
IV.FDMO.HHE. ML:1.9 0.00018693855 0.1536 AML other m 2023-06-07T18:42:42.09
IV.ASSB.HHE. ML:1.4 0.00006834873 0.1152 AML other m 2023-06-07T18:42:41.57
IV.FDMO.HHN. ML:1.9 0.00017749999999999998 1.84 AML other m 2023-06-07T18:42:42.98
IV.MML1.EHE. ML:2.0 0.00021650000000000003 0.72 AML other m 2023-06-07T18:42:43.48
IV.MML1.EHN. ML:2.2 0.0003135 0.18 AML other m 2023-06-07T18:42:43.71
IV.CSP1.EHE. ML:2.0 0.00016236825 0.1408 AML other m 2023-06-07T18:42:46.09
IV.TERO.HHN. ML:1.4 0.00003917189 0.0896 AML other m 2023-06-07T18:42:46.18
IV.ATCC.EHE. ML:1.6 0.0000779 1.42 AML other m 2023-06-07T18:42:46.20
IV.TERO.HHE. ML:1.3 0.000028785974999999997 0.1536 AML other m 2023-06-07T18:42:46.30
IV.MGAB.HHN. ML:1.6 0.0000871 0.2 AML other m 2023-06-07T18:42:46.97
IV.ATCC.EHN. ML:1.5 0.00006207653 0.192 AML other m 2023-06-07T18:42:47.00
IV.MGAB.HHE. ML:1.6 0.00007913908 0.5632 AML other m 2023-06-07T18:42:47.42
IV.CSP1.EHN. ML:2.0 0.00015849999999999998 0.82 AML other m 2023-06-07T18:42:48.65
IV.GUMA.HHE. ML:1.8 0.000093 0.28 AML other m 2023-06-07T18:42:49.18
IV.MURB.HHN. ML:2.0 0.0001385 0.26 AML other m 2023-06-07T18:42:49.52
IV.MURB.HHE. ML:1.9 0.00011700000000000001 1.04 AML other m 2023-06-07T18:42:52.64
IV.GUMA.HHN. ML:1.7 0.00008395 0.46 AML other m 2023-06-07T18:42:52.44
IV.GAVE.HNE. ML:1.7 0.00048281285 0.1536 AML other m 2023-06-07T18:42:32.79
IV.GAVE.HNN. ML:1.2 0.00013416214499999997 0.2816 AML other m 2023-06-07T18:42:31.44
IV.LNSS.HNE. ML:2.2 0.0009778856 0.1536 AML other m 2023-06-07T18:42:33.20
IV.LNSS.HNN. ML:2.3 0.0012057980000000001 0.1408 AML other m 2023-06-07T18:42:33.28
IV.NRCA.HNE. ML:2.0 0.0003093926 0.1408 AML other m 2023-06-07T18:42:37.31
IV.NRCA.HNN. ML:1.8 0.00022827760000000002 0.1536 AML other m 2023-06-07T18:42:37.20
IV.CESI.HNE. ML:1.8 0.00016988569 0.1664 AML other m 2023-06-07T18:42:39.30
IV.CESI.HNN. ML:2.0 0.00031253065 0.256 AML other m 2023-06-07T18:42:39.72
IV.MML1.HNE. ML:2.0 0.00019219425 0.1664 AML other m 2023-06-07T18:42:43.75
IV.MURB.HNE. ML:1.9 0.00012735465000000002 0.4096 AML other m 2023-06-07T18:42:53.09
IV.MURB.HNN. ML:1.9 0.00013065755 0.3072 AML other m 2023-06-07T18:42:49.66
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