Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 29-04-2023 and time 02:39:53 (UTC) in region 1 km W Ussita (MC)

A magnitude ML 1.5 earthquake occured in region: 1 km W Ussita (MC), on

  • 29-04-2023 02:39:53 (UTC)
  • 29-04-2023 04:39:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9440, 13.1260 at 9 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 1 444 444
Visso MC 3 1107 1551
Castelsantangelo sul Nera MC 6 281 1832
Bolognola MC 10 142 1974
Preci PG 10 724 2698
Acquacanina MC 10 121 2819
Fiastra MC 11 559 3378
Fiordimonte MC 11 202 3580
Monte Cavallo MC 12 145 3725
Pieve Torina MC 13 1458 5183
Pievebovigliana MC 14 866 6049
Muccia MC 17 915 6964
Norcia PG 17 4957 11921
Montemonaco AP 17 604 12525
Sellano PG 17 1079 13604
Sarnano MC 18 3264 16868
Montefortino FM 18 1178 18046
Amandola FM 19 3629 21675

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
63 Km E of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
96 Km NW of Montesilvano (53738 inhabitants)
100 Km S of Fano (60888 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 1.5 2023-04-29
02:39:53		 42.9443 13.1263 9 2024-03-01
17:18:12		 Bollettino Sismico Italiano INGV 119135451
Reviewed
Rev100 		ML 1.6 2023-04-29
02:39:53		 42.9482 13.1323 9 2023-04-29
02:46:00		 Sala Sismica INGV-Roma 116858221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-29 02:39:53 ± 0.04
Latitude 42.9443 ± 0.0027
Longitude 13.1263 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 119135451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 295
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 38
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47574
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 119135451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-07-10 10:40:35

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 116858221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-29 02:46:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2023-04-29T02:40:16.92 3.0 undecidable manual S -0.38 0
IV.TERO.HHZ. 2023-04-29T02:40:10.25 0.3 undecidable manual S 132 52.8027 50 -0.07 69
IV.FOSV.HNE. 2023-04-29T02:40:09.42 0.6 undecidable manual S 323 48.8178 50 0.14 46
IV.CAMP.HHE. 2023-04-29T02:40:09.73 0.3 undecidable manual S 153 50.8158 50 -0.07 69
IV.SMA1.EHZ. 2023-04-29T02:40:06.62 0.3 undecidable manual S 154 38.7279 50 0.04 71
IV.ASSB.HHZ. 2023-04-29T02:40:06.66 0.3 undecidable manual S 286 39.4272 50 -0.11 70
IV.LNSS.HHZ. 2023-04-29T02:40:06.48 0.3 undecidable manual S 191 38.5281 50 -0.04 71
IV.GAVE.EHZ. 2023-04-29T02:40:05.10 0.3 undecidable manual S 214 33.744 50 -0.14 70
IV.MTRA.HNZ. 2023-04-29T02:40:03.90 0.1 undecidable manual S 133 30.2475 106 -0.31 91
IV.MF5.EHZ. 2023-04-29T02:40:03.97 0.3 undecidable manual S 80 27.4503 108 0.68 61
IV.CAMP.HHE. 2023-04-29T02:40:03.68 0.3 undecidable manual P 153 50.8158 50 0.86 55
IV.CING.HNZ. 2023-04-29T02:40:02.24 0.6 undecidable manual P 7 48.2184 50 -0.17 45
IV.RM33.EHZ. 2023-04-29T02:40:02.62 0.3 undecidable manual P 172 48.8178 50 0.11 69
IV.FOSV.HNE. 2023-04-29T02:40:02.34 0.3 undecidable manual P 323 48.8178 50 -0.17 68
IV.TERO.HHZ. 2023-04-29T02:40:02.89 0.6 undecidable manual P 132 52.8027 50 -0.23 45
IV.MNTT.EHZ. 2023-04-29T02:40:01.63 0.3 undecidable manual P 71 40.2264 50 0.44 65
IV.GUMA.HHZ. 2023-04-29T02:40:01.50 0.3 undecidable manual S 52 21.4674 112 0.18 71
IV.LNSS.HHZ. 2023-04-29T02:40:00.79 0.3 undecidable manual P 191 38.5281 50 -0.13 70
IV.SNTG.HHZ. 2023-04-29T02:40:00.44 3.0 undecidable manual P -0.24 0
IV.CESI.HHZ. 2023-04-29T02:40:00.80 0.1 undecidable manual S 291 19.1697 115 0.19 95
IV.SMA1.EHZ. 2023-04-29T02:40:00.85 0.3 undecidable manual P 154 38.7279 50 -0.1 70
IV.GAVE.EHZ. 2023-04-29T02:40:00.14 0.1 positive manual P 214 33.744 50 -0.05 96
IV.ASSB.HHZ. 2023-04-29T02:40:00.76 0.1 positive manual P 286 39.4272 50 -0.31 90
IV.MMO1.EHZ. 2023-04-29T02:39:59.80 0.3 undecidable manual S 107 17.0718 117 -0.13 73
IV.MF5.EHZ. 2023-04-29T02:39:59.16 0.1 positive manual P 80 27.4503 108 0.1 96
IV.CSP1.EHZ. 2023-04-29T02:39:59.70 0.6 undecidable manual S 21 17.5713 117 -0.39 46
7F.SIB2.EHZ. 2023-04-29T02:39:59.20 0.6 undecidable manual S 112 15.5733 119 -0.28 47
IV.MTRA.HNZ. 2023-04-29T02:39:59.51 0.6 undecidable manual P 133 30.2475 106 -0.08 48
IV.GUMA.HHZ. 2023-04-29T02:39:58.00 0.1 positive manual P 52 21.4674 112 0.08 97
7F.SIB3.EHZ. 2023-04-29T02:39:58.60 0.1 undecidable manual S 123 13.9749 122 -0.41 92
IV.NRCA.HHZ. 2023-04-29T02:39:58.70 0.1 undecidable manual S 185 12.2766 126 0.17 97
IV.MML1.EHZ. 2023-04-29T02:39:58.02 0.3 undecidable manual P 326 22.5552 111 -0.11 72
IT.MTCL.HGZ. 2023-04-29T02:39:58.30 0.6 undecidable manual S 298 11.6772 127 -0.05 50
IV.FDMO.HHZ. 2023-04-29T02:39:57.70 0.3 undecidable manual S 343 10.6782 129 -0.38 70
IV.MMO1.EHZ. 2023-04-29T02:39:57.12 0.1 positive manual P 107 17.0718 117 0 99
IV.CESI.HHZ. 2023-04-29T02:39:57.67 0.1 positive manual P 291 19.1697 115 0.16 96
IV.CSP1.EHZ. 2023-04-29T02:39:57.09 0.3 undecidable manual P 21 17.5713 117 -0.12 73
IV.NRCA.HHZ. 2023-04-29T02:39:56.63 0.1 positive manual P 185 12.2766 126 0.32 94
7F.SIB2.EHZ. 2023-04-29T02:39:56.85 0.1 positive manual P 112 15.5733 119 -0.01 99
IT.MTCL.HGZ. 2023-04-29T02:39:56.38 0.1 undecidable manual P 298 11.6772 127 0.18 97
7F.SIB3.EHZ. 2023-04-29T02:39:56.61 0.1 positive manual P 123 13.9749 122 0.03 99
IV.FDMO.HHZ. 2023-04-29T02:39:56.03 0.1 negative manual P 343 10.6782 129 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.9 0.0008539999999999999 0.14 AML other m 2023-04-29T02:39:58.88
IV.NRCA.HNN. ML:1.8 0.0008185 0.1 AML other m 2023-04-29T02:39:58.88
IV.NRCA.HNE. ML:1.8 0.000762 1.92 AML other m 2023-04-29T02:39:59.98
IV.NRCA.HHE. ML:1.8 0.0008332814 1.92 AML other m 2023-04-29T02:39:59.02
IV.FDMO.HHN. ML:1.0 0.0001323087 1.5408 AML other m 2023-04-29T02:39:59.83
IV.MMO1.EHN. ML:2.1 0.0011600000000000002 1.04 AML other m 2023-04-29T02:40:00.04
IV.MMO1.EHE. ML:1.9 0.0007415000000000001 0.16 AML other m 2023-04-29T02:40:00.09
IV.CESI.HHN. ML:1.5 0.000259 0.42 AML other m 2023-04-29T02:40:01.07
IV.FDMO.HHE. ML:1.2 0.00018954969999999998 0.3008 AML other m 2023-04-29T02:40:01.48
IV.MML1.EHE. ML:1.0 0.00006204999999999999 0.52 AML other m 2023-04-29T02:40:01.93
IV.CESI.HHE. ML:1.3 0.0001685 0.74 AML other m 2023-04-29T02:40:01.34
IV.MML1.EHN. ML:1.1 0.0000881 0.48 AML other m 2023-04-29T02:40:01.99
IV.GUMA.HNN. ML:1.7 0.0003725 1.44 AML other m 2023-04-29T02:40:02.83
IV.CSP1.EHE. ML:1.4 0.00024544375 0.4 AML other m 2023-04-29T02:40:02.75
IV.CSP1.EHN. ML:1.6 0.00031390380000000004 0.3984 AML other m 2023-04-29T02:40:02.93
IV.GUMA.HHN. ML:1.6 0.000275 1.44 AML other m 2023-04-29T02:40:03.04
IV.MF5.EHE. ML:1.4 0.00013025 0.5 AML other m 2023-04-29T02:40:04.37
IV.GUMA.HNE. ML:1.7 0.00033999999999999997 0.42 AML other m 2023-04-29T02:40:04.90
IV.GUMA.HHE. ML:1.8 0.00046399999999999995 0.38 AML other m 2023-04-29T02:40:04.72
IV.GAVE.EHE. ML:1.9 0.00033999999999999997 0.14 AML other m 2023-04-29T02:40:05.35
IV.GAVE.HNE. ML:1.9 0.00033850000000000004 1.02 AML other m 2023-04-29T02:40:05.34
IV.GAVE.EHN. ML:1.8 0.0002715 0.38 AML other m 2023-04-29T02:40:06.23
IV.SMA1.EHN. ML:1.2 0.00005875 0.44 AML other m 2023-04-29T02:40:06.82
IV.GAVE.HNN. ML:1.9 0.0003105 0.86 AML other m 2023-04-29T02:40:06.55
IV.SMA1.EHE. ML:1.3 0.000077 1.12 AML other m 2023-04-29T02:40:07.03
IV.ASSB.HHN. ML:1.3 0.0000764 1.66 AML other m 2023-04-29T02:40:07.91
IV.ASSB.HHE. ML:1.2 0.0000477 0.34 AML other m 2023-04-29T02:40:07.40
IV.MF5.EHN. ML:1.2 0.00007764999999999999 0.66 AML other m 2023-04-29T02:40:07.86
IV.SNTG.HHN. ML:0.7 0.0000223 0.42 AML other m 2023-04-29T02:40:08.31
IV.TERO.HHE. ML:1.4 0.00005915 0.68 AML other m 2023-04-29T02:40:10.60
IV.TERO.HHN. ML:1.6 0.00008785 0.4 AML other m 2023-04-29T02:40:10.58
IV.SNTG.HHE. ML:0.7 0.0000187 0.56 AML other m 2023-04-29T02:40:10.81
IV.MNTT.EHN. ML:1.7 0.00016700000000000002 0.76 AML other m 2023-04-29T02:40:14.56
IV.MNTT.EHE. ML:1.6 0.0001273 1.16 AML other m 2023-04-29T02:40:15.85
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