Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 29-04-2023 and time 11:39:30 (Italy) in region 2 km S Ussita (MC)

A magnitude ML 1.8 earthquake occured in region: 2 km S Ussita (MC), on

  • 29-04-2023 09:39:30 (UTC)
  • 29-04-2023 11:39:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9230, 13.1330 at 10 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.

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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
Ussita MC 3 444 444
Castelsantangelo sul Nera MC 4 281 725
Visso MC 4 1107 1832
Preci PG 9 724 2556
Bolognola MC 11 142 2698
Acquacanina MC 12 121 2819
Fiastra MC 13 559 3378
Fiordimonte MC 13 202 3580
Monte Cavallo MC 13 145 3725
Norcia PG 15 4957 8682
Pieve Torina MC 15 1458 10140
Pievebovigliana MC 16 866 11006
Montemonaco AP 16 604 11610
Sellano PG 17 1079 12689
Montefortino FM 17 1178 13867
Sarnano MC 19 3264 17131
Montegallo AP 19 523 17654
Muccia MC 19 915 18569
Amandola FM 19 3629 22198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
95 Km W of Montesilvano (53738 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 1.8 2023-04-29
09:39:30		 42.9233 13.1328 10 2024-03-01
17:18:12		 Bollettino Sismico Italiano INGV 119188381
Reviewed
Rev100 		ML 1.8 2023-04-29
09:39:30		 42.9267 13.1292 11 2023-04-29
09:50:16		 Sala Sismica INGV-Roma 116867751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-29 09:39:30 ± 0.04
Latitude 42.9233 ± 0.0027
Longitude 13.1328 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 119188381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 320
Semi-minor axis of confidence ellipse (meter) 24
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 76
Number of defining phases 61
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.79590
Number of stations at which the event was observed 45
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 80
Type of magnitude ML
Reference to an origin 116867751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-29 09:50:16

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 80
Type of magnitude ML
Reference to an origin 119188381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-07-12 07:51:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2023-04-29T09:40:16.88 3.0 undecidable manual S 3.31 0
IV.BRSN.HNZ. 2023-04-29T09:40:02.34 3.0 positive manual Pg 4.72 0
IV.SENI.EHZ. 2023-04-29T09:39:59.03 3.0 undecidable manual S 0.41 0
IV.MPAG.EHZ. 2023-04-29T09:39:57.20 0.6 undecidable manual S 339 83.9493 50 1.31 28
IV.PIEI.HHZ. 2023-04-29T09:39:56.60 0.6 undecidable manual S 325 83.3499 50 0.85 34
IV.POFI.HHZ. 2023-04-29T09:39:55.70 3.0 undecidable manual P 1.79 0
IV.FRON.EHZ. 2023-04-29T09:39:54.31 3.0 undecidable manual S -0.15 0
IV.ARVD.HHZ. 2023-04-29T09:39:52.02 3.0 undecidable manual S -0.1 0
IV.ATSC.EHE. 2023-04-29T09:39:52.09 0.3 undecidable manual S 327 66.2781 50 0.91 52
IV.SSFR.HHZ. 2023-04-29T09:39:51.31 3.0 undecidable manual S -0.14 0
IV.TERO.HHZ. 2023-04-29T09:39:47.10 0.3 undecidable manual S 131 50.8158 50 0.05 70
IV.CING.HHZ. 2023-04-29T09:39:47.20 0.6 undecidable manual S 6 50.4162 50 0.25 45
IV.ATCC.EHZ. 2023-04-29T09:39:47.00 0.3 undecidable manual S 306 49.4172 50 0.32 66
IV.CAMP.HHE. 2023-04-29T09:39:46.30 0.3 undecidable manual S 152 48.5181 50 -0.14 69
IV.MGAB.HHZ. 2023-04-29T09:39:45.73 3.0 negative manual P 0.22 0
IV.MPAG.EHZ. 2023-04-29T09:39:45.73 0.3 undecidable manual P 339 83.9493 50 0.42 61
IV.EL6.EHZ. 2023-04-29T09:39:45.60 0.3 undecidable manual S 357 45.1215 50 0.07 70
IV.NARO.HHZ. 2023-04-29T09:39:45.87 0.6 undecidable manual P 330 88.3449 50 -0.12 43
IV.ATPI.EHZ. 2023-04-29T09:39:45.74 3.0 negative manual P 0.16 0
IV.PIEI.HHZ. 2023-04-29T09:39:45.23 0.6 undecidable manual P 325 83.3499 50 0.01 44
IV.FRON.EHZ. 2023-04-29T09:39:44.05 3.0 undecidable manual P 0 0
IV.ATVO.HHZ. 2023-04-29T09:39:44.41 3.0 positive manual P -0.26 0
IV.ASSB.HHZ. 2023-04-29T09:39:44.20 0.3 undecidable manual S 289 40.7259 50 -0.16 70
IV.SNTG.HHZ. 2023-04-29T09:39:43.90 0.3 undecidable manual S 337 39.9267 50 -0.26 68
IV.LNSS.HHZ. 2023-04-29T09:39:43.70 0.6 undecidable manual S 192 36.3414 50 0.51 43
IV.SMA1.EHZ. 2023-04-29T09:39:43.20 0.3 undecidable manual S 153 36.4413 50 -0.01 72
IV.ARVD.HHZ. 2023-04-29T09:39:43.46 3.0 positive manual P 0.72 0
IV.SENI.EHZ. 2023-04-29T09:39:43.72 3.0 positive manual P -2.67 0
IV.ATSC.EHE. 2023-04-29T09:39:42.47 0.6 undecidable manual P 327 66.2781 50 -0.12 45
IV.SSFR.HHZ. 2023-04-29T09:39:42.32 3.0 negative manual P -0.04 0
IV.ATFO.HHZ. 2023-04-29T09:39:42.67 3.0 undecidable manual P -0.22 0
IV.GIGS.HHZ. 2023-04-29T09:39:41.72 0.6 undecidable manual P 145 63.2922 50 -0.41 42
IV.MF5.EHZ. 2023-04-29T09:39:41.30 0.3 undecidable manual S 75 27.4503 50 0.47 67
IV.SAP2.EHZ. 2023-04-29T09:39:41.60 0.3 undecidable manual S 48 28.9488 50 0.39 68
IV.FOSV.HNE. 2023-04-29T09:39:40.06 0.6 undecidable manual P 324 51.0156 50 -0.18 45
IV.CESX.HHZ. 2023-04-29T09:39:40.84 0.6 undecidable manual P 232 56.499 50 -0.25 44
IV.TERO.HHZ. 2023-04-29T09:39:40.05 0.3 undecidable manual P 131 50.8158 50 -0.16 68
IV.MTRA.EHE. 2023-04-29T09:39:40.80 0.3 undecidable manual S 131 28.3494 50 -0.25 70
IV.CING.HHZ. 2023-04-29T09:39:40.17 0.3 undecidable manual P 6 50.4162 50 0.03 70
IV.MNTT.EHZ. 2023-04-29T09:39:39.06 0.1 undecidable manual P 68 40.5261 50 0.43 88
IV.PF6.EHN. 2023-04-29T09:39:39.35 0.3 undecidable manual S 12 24.3534 50 -0.63 63
IV.RM33.EHZ. 2023-04-29T09:39:39.53 0.3 undecidable manual P 172 46.4202 50 0 71
IV.EL6.EHZ. 2023-04-29T09:39:39.12 0.3 undecidable manual P 357 45.1215 50 -0.21 68
IV.MML1.EHZ. 2023-04-29T09:39:39.70 0.1 undecidable manual S 328 24.8529 50 -0.42 90
IV.MOMA.HHZ. 2023-04-29T09:39:39.51 0.1 undecidable manual P 254 47.619 50 -0.21 91
IV.ATCC.EHZ. 2023-04-29T09:39:39.82 0.3 undecidable manual P 306 49.4172 50 -0.17 68
IV.CAMP.HHE. 2023-04-29T09:39:39.67 0.3 undecidable manual P 152 48.5181 50 -0.18 68
IV.GUMA.HHZ. 2023-04-29T09:39:39.60 0.1 undecidable manual S 47 22.5552 114 0.16 96
IV.CESI.HNZ. 2023-04-29T09:39:38.70 0.1 undecidable manual S 296 20.6682 116 -0.14 96
IV.LNSS.HHZ. 2023-04-29T09:39:38.31 0.1 undecidable manual P 192 36.3414 50 0.33 90
IV.CSP1.EHZ. 2023-04-29T09:39:38.20 0.1 undecidable manual S 17 19.5693 118 -0.32 93
IV.ASSB.HHZ. 2023-04-29T09:39:38.38 0.1 positive manual P 289 40.7259 50 -0.27 91
IV.SNTG.HHZ. 2023-04-29T09:39:38.30 0.1 undecidable manual P 337 39.9267 50 -0.23 91
IV.MMO1.EHZ. 2023-04-29T09:39:37.30 0.1 undecidable manual S 99 15.9729 123 -0.13 97
IV.SMA1.EHZ. 2023-04-29T09:39:37.79 0.3 undecidable manual P 153 36.4413 50 -0.2 70
IV.MF5.EHZ. 2023-04-29T09:39:36.75 0.1 positive manual P 75 27.4503 50 0.14 95
7F.SIB2.EHE. 2023-04-29T09:39:36.80 0.3 undecidable manual S 104 14.3745 126 -0.16 73
7F.SIB3.EHN. 2023-04-29T09:39:36.40 0.3 undecidable manual S 116 12.3765 130 -0.01 75
IV.MTRA.EHE. 2023-04-29T09:39:36.52 0.1 undecidable manual P 131 28.3494 50 -0.22 94
IT.MTCL.HGZ. 2023-04-29T09:39:36.60 0.1 undecidable manual S 306 13.3755 127 -0.09 99
IV.SAP2.EHZ. 2023-04-29T09:39:36.96 0.1 undecidable manual P 48 28.9488 50 0.13 95
IV.FDMO.HHZ. 2023-04-29T09:39:36.40 0.1 undecidable manual S 344 13.0758 128 -0.22 96
IV.CESI.HNZ. 2023-04-29T09:39:35.46 0.1 positive manual P 296 20.6682 116 0 99
IV.NRCA.HNZ. 2023-04-29T09:39:35.90 0.3 undecidable manual S 189 10.0788 135 0.07 75
IV.MML1.EHZ. 2023-04-29T09:39:35.97 0.1 positive manual P 328 24.8529 50 -0.23 94
IV.CSP1.EHZ. 2023-04-29T09:39:35.16 0.1 negative manual P 17 19.5693 118 -0.12 97
IV.PF6.EHN. 2023-04-29T09:39:35.77 0.1 negative manual P 12 24.3534 50 -0.35 92
IV.FEMA.HNZ. 2023-04-29T09:39:35.70 0.1 undecidable manual S 303 7.9809 142 0.34 94
IV.GUMA.HHZ. 2023-04-29T09:39:35.85 0.1 positive manual P 47 22.5552 114 0.04 98
IT.MTCL.HGZ. 2023-04-29T09:39:34.30 0.1 undecidable manual P 306 13.3755 127 0.08 99
IV.FDMO.HHZ. 2023-04-29T09:39:34.22 0.1 negative manual P 344 13.0758 128 0.04 100
7F.SIB3.EHN. 2023-04-29T09:39:34.13 0.1 positive manual P 116 12.3765 130 0.07 99
7F.SIB2.EHE. 2023-04-29T09:39:34.39 0.1 positive manual P 104 14.3745 126 0.01 100
IV.MMO1.EHZ. 2023-04-29T09:39:34.67 0.1 positive manual P 99 15.9729 123 0.02 100
IV.NRCA.HNZ. 2023-04-29T09:39:33.98 0.1 negative manual P 189 10.0788 135 0.26 96
IV.FEMA.HNZ. 2023-04-29T09:39:33.83 0.1 negative manual P 303 7.9809 142 0.38 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FEMA.HNE. ML:2.4 0.003985 1.7 AML other m 2023-04-29T09:39:35.89
IV.NRCA.HHN. ML:2.2 0.001985 0.12 AML other m 2023-04-29T09:39:36.11
IV.NRCA.HNN. ML:2.2 0.0018449999999999999 0.12 AML other m 2023-04-29T09:39:36.12
IV.FEMA.HNN. ML:2.3 0.0026799999999999997 1.74 AML other m 2023-04-29T09:39:36.12
IV.NRCA.HHE. ML:2.1 0.00149 0.18 AML other m 2023-04-29T09:39:36.65
IV.NRCA.HNE. ML:2.0 0.00136 0.2 AML other m 2023-04-29T09:39:36.66
IT.MTCL.HGN. ML:4.4 0.2725 0.4 AML other m 2023-04-29T09:39:36.76
IV.FDMO.HHE. ML:2.2 0.0015249999999999999 1.2 AML other m 2023-04-29T09:39:37.65
IT.MTCL.HGE. ML:4.4 0.238 1.36 AML other m 2023-04-29T09:39:37.76
IV.FDMO.HHN. ML:2.0 0.0010305 0.38 AML other m 2023-04-29T09:39:37.22
IV.MMO1.EHE. ML:2.3 0.00188 0.22 AML other m 2023-04-29T09:39:37.45
IV.MMO1.EHN. ML:2.0 0.0008939999999999999 1.64 AML other m 2023-04-29T09:39:37.06
IV.CSP1.EHE. ML:2.4 0.0019299999999999999 0.7 AML other m 2023-04-29T09:39:38.53
IV.CSP1.EHN. ML:2.5 0.00237 0.4 AML other m 2023-04-29T09:39:38.43
IV.CESI.HHE. ML:2.3 0.001405 1.32 AML other m 2023-04-29T09:39:38.22
IV.CESI.HHN. ML:2.6 0.0026 0.24 AML other m 2023-04-29T09:39:39.10
IV.MML1.HNN. ML:2.0 0.000637 1.04 AML other m 2023-04-29T09:39:39.46
IV.MML1.EHN. ML:2.0 0.0006665000000000001 1.06 AML other m 2023-04-29T09:39:39.99
IV.GUMA.HHN. ML:2.3 0.001445 1.5 AML other m 2023-04-29T09:39:40.86
IV.GUMA.HNN. ML:2.4 0.00155 1.48 AML other m 2023-04-29T09:39:40.11
IV.MML1.EHE. ML:1.9 0.00049 0.28 AML other m 2023-04-29T09:39:40.26
IV.MML1.HNE. ML:1.9 0.00047950000000000005 0.3 AML other m 2023-04-29T09:39:40.41
IV.GUMA.HHE. ML:2.2 0.00117 0.24 AML other m 2023-04-29T09:39:41.48
IV.GUMA.HNE. ML:2.2 0.001101 0.26 AML other m 2023-04-29T09:39:41.36
IV.SAP2.EHE. ML:2.2 0.000773 1.18 AML other m 2023-04-29T09:39:41.25
IV.SAP2.EHN. ML:3.0 0.004900000000000001 0.14 AML other m 2023-04-29T09:39:41.89
IV.MF5.EHE. ML:2.0 0.00046950000000000003 0.22 AML other m 2023-04-29T09:39:41.97
IV.MF5.EHN. ML:1.8 0.0003435 0.6 AML other m 2023-04-29T09:39:43.31
IV.SMA1.EHN. ML:1.6 0.000136 1.78 AML other m 2023-04-29T09:39:44.08
IV.SNTG.HHE. ML:1.7 0.000162 0.14 AML other m 2023-04-29T09:39:44.57
IV.ASSB.HHN. ML:1.9 0.00028500000000000004 0.4 AML other m 2023-04-29T09:39:44.60
IV.LNSS.HHE. ML:1.7 0.0001825 0.12 AML other m 2023-04-29T09:39:45.05
IV.SNTG.HHN. ML:1.7 0.00016649999999999998 1.14 AML other m 2023-04-29T09:39:45.12
IV.ASSB.HHE. ML:1.9 0.0002635 0.66 AML other m 2023-04-29T09:39:45.25
IV.EL6.EHN. ML:1.8 0.00016900000000000002 1.32 AML other m 2023-04-29T09:39:46.81
IV.LNSS.HHN. ML:1.7 0.00019800000000000002 0.34 AML other m 2023-04-29T09:39:46.74
IV.ATCC.EHE. ML:1.9 0.00019 0.34 AML other m 2023-04-29T09:39:47.53
IV.MOMA.HHE. ML:1.8 0.0001885 0.22 AML other m 2023-04-29T09:39:48.12
IV.MNTT.EHN. ML:2.3 0.0006515 0.28 AML other m 2023-04-29T09:39:48.22
IV.RM33.EHN. ML:1.4 0.00007065 1 AML other m 2023-04-29T09:39:48.41
IV.RM33.EHE. ML:1.5 0.00008690000000000001 1.52 AML other m 2023-04-29T09:39:48.84
IV.EL6.EHE. ML:1.8 0.00019499999999999997 1.38 AML other m 2023-04-29T09:39:48.90
IV.TERO.HHN. ML:1.6 0.00011205000000000001 1.26 AML other m 2023-04-29T09:39:49.68
IV.TERO.HHE. ML:1.6 0.00009085 0.9 AML other m 2023-04-29T09:39:49.79
IV.MNTT.EHE. ML:2.1 0.00045799999999999997 0.7 AML other m 2023-04-29T09:39:49.46
IV.SMA1.EHE. ML:1.6 0.000153 1.32 AML other m 2023-04-29T09:39:49.05
IV.CING.HHN. ML:1.5 0.00008405 1.66 AML other m 2023-04-29T09:39:49.01
IV.CING.HHE. ML:1.5 0.00008854999999999998 1.32 AML other m 2023-04-29T09:39:50.83
IV.ATCC.EHN. ML:1.8 0.0001615 0.4 AML other m 2023-04-29T09:39:50.03
IV.CESX.HHN. ML:1.7 0.0001083 0.6 AML other m 2023-04-29T09:39:52.07
IV.GIGS.HHN. ML:1.1 0.0000226 0.54 AML other m 2023-04-29T09:39:52.08
IV.MOMA.HHN. ML:1.3 0.00004955 0.52 AML other m 2023-04-29T09:39:52.37
IV.SSFR.HHN. ML:2.0 0.0002 0.16 AML other m 2023-04-29T09:39:52.42
IV.GIGS.HHE. ML:1.0 0.00002 0.14 AML other m 2023-04-29T09:39:52.47
IV.ARVD.HHN. ML:1.3 0.00004105 1.3 AML other m 2023-04-29T09:39:52.11
IV.ARVD.HHE. ML:1.4 0.0000472 0.4 AML other m 2023-04-29T09:39:52.84
IV.CESX.HHE. ML:1.7 0.00010705 0.56 AML other m 2023-04-29T09:39:53.07
IV.SSFR.HNN. ML:2.1 0.0002535 0.62 AML other m 2023-04-29T09:39:53.43
IV.SSFR.HHE. ML:1.9 0.00014450000000000002 0.5 AML other m 2023-04-29T09:39:53.38
IV.SSFR.HNE. ML:2.1 0.000249 1.34 AML other m 2023-04-29T09:39:53.86
IV.FRON.EHE. ML:1.5 0.0000463 1.14 AML other m 2023-04-29T09:39:55.81
IV.ATFO.HHE. ML:1.6 0.00006419999999999999 0.42 AML other m 2023-04-29T09:39:56.10
IV.PIEI.HHN. ML:1.4 0.0000343 0.2 AML other m 2023-04-29T09:39:57.53
IV.FRON.EHN. ML:1.7 0.00006785 0.56 AML other m 2023-04-29T09:39:57.51
IV.MPAG.EHE. ML:1.4 0.00003545 0.44 AML other m 2023-04-29T09:39:58.24
IV.PIEI.HHE. ML:1.6 0.00005395 1.34 AML other m 2023-04-29T09:39:58.22
IV.ATFO.HHN. ML:1.4 0.00004935000000000001 0.86 AML other m 2023-04-29T09:39:58.30
IV.ATPI.EHN. ML:1.3 0.00002335 0.74 AML other m 2023-04-29T09:39:59.56
IV.ATPI.EHE. ML:1.5 0.000037699999999999995 0.5 AML other m 2023-04-29T09:40:00.55
IV.ATVO.HHE. ML:1.4 0.000034500000000000005 0.28 AML other m 2023-04-29T09:40:00.66
IV.NARO.HHN. ML:1.2 0.00002155 1.02 AML other m 2023-04-29T09:40:00.15
IV.MGAB.HHE. ML:1.5 0.0000421 0.42 AML other m 2023-04-29T09:40:01.20
IV.MGAB.HHN. ML:1.5 0.00004455 0.28 AML other m 2023-04-29T09:40:01.61
IV.MPAG.EHN. ML:1.3 0.000024550000000000004 0.68 AML other m 2023-04-29T09:40:01.86
IV.ATVO.HHN. ML:1.3 0.000030550000000000004 0.38 AML other m 2023-04-29T09:40:02.31
IV.NARO.HHE. ML:1.2 0.0000207 0.62 AML other m 2023-04-29T09:40:03.49
IV.SENI.HNE. ML:3.1 0.00148 1.8 AML other m 2023-04-29T09:40:09.90
IV.SENI.EHN. ML:2.2 0.000184 0.76 AML other m 2023-04-29T09:40:11.39
IV.SENI.HNN. ML:3.1 0.001585 0.24 AML other m 2023-04-29T09:40:12.80
IV.SENI.EHE. ML:2.2 0.000185 1 AML other m 2023-04-29T09:40:13.61
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