Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 03-04-2024 and time 00:21:57 (Italy) in region 4 km W Arquata del Tronto (AP)

A magnitude ML 1.0 earthquake occured in region: 4 km W Arquata del Tronto (AP), on

  • 02-04-2024 22:21:57 (UTC)
  • 03-04-2024 00:21:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7740, 13.2500 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
Arquata del Tronto AP 4 1178 1178
Accumoli RI 9 667 1845
Montegallo AP 10 523 2368
Norcia PG 13 4957 7325
Acquasanta Terme AP 13 2916 10241
Montemonaco AP 15 604 10845
Castelsantangelo sul Nera MC 16 281 11126
Amatrice RI 16 2657 13783
Cittareale RI 19 482 14265

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
48 Km N of L'Aquila (69753 inhabitants)
49 Km E of Foligno (57155 inhabitants)
55 Km E of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
79 Km E of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km S of Ancona (100861 inhabitants)
97 Km NE of Tivoli (56533 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 1.0 2024-04-02
22:21:57		 42.7738 13.2505 11 2024-04-02
22:29:19		 Sala Sismica INGV-Roma 126419491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-02 22:21:57 ± 0.05
Latitude 42.7738 ± 0.0027
Longitude 13.2505 ± 0.0061
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 126419491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 464
Semi-minor axis of confidence ellipse (meter) 276
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.10252
Epicentral distance of station farthest from the epicenter (degree) 0.39570
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 14
Type of magnitude ML
Reference to an origin 126419491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-02 22:29:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHZ. 2024-04-02T22:22:09.79 0.6 undecidable manual S 312 38.0286 50 -0.08 47
IV.MF5.EHZ. 2024-04-02T22:22:08.11 0.6 undecidable manual S 36 29.1486 50 0.6 42
IV.FDMO.HHZ. 2024-04-02T22:22:07.49 0.6 undecidable manual S 336 32.0457 50 -0.77 39
IV.RM33.EHZ. 2024-04-02T22:22:07.52 0.6 undecidable manual S 186 29.5482 50 -0.07 48
IV.LNSS.HHZ. 2024-04-02T22:22:06.68 0.6 undecidable manual S 222 25.5522 50 0.14 48
IV.MML1.EHZ. 2024-04-02T22:22:05.30 1.0 positive manual P 329 43.9227 50 -0.11 23
IV.CESI.HHZ. 2024-04-02T22:22:04.35 1.0 negative manual P 312 38.0286 50 -0.15 23
IV.MC2.EHZ. 2024-04-02T22:22:04.13 0.6 undecidable manual S 342 16.0728 124 0.28 47
IV.RM33.EHZ. 2024-04-02T22:22:03.02 0.6 positive manual P 186 29.5482 50 -0.16 47
IV.SMA1.EHZ. 2024-04-02T22:22:03.97 0.6 undecidable manual S 156 17.3715 122 -0.26 47
IV.MF5.EHZ. 2024-04-02T22:22:03.24 0.6 positive manual P 36 29.1486 50 0.11 48
IV.TERO.HHZ. 2024-04-02T22:22:03.21 1.0 positive manual P 120 33.3444 50 -0.56 21
IV.GUMA.HHZ. 2024-04-02T22:22:03.71 1.0 undecidable manual P 12 32.745 50 0.03 24
ZO.PDN12.EHZ. 2024-04-02T22:22:03.49 0.6 undecidable manual P 281 27.6501 50 0.6 43
IV.NRCA.HHZ. 2024-04-02T22:22:03.00 0.6 undecidable manual S 301 12.876 130 0.02 50
IV.MMO1.EHZ. 2024-04-02T22:22:03.52 0.6 undecidable manual S 24 15.2736 125 -0.09 49
IV.FDMO.HHZ. 2024-04-02T22:22:03.21 0.6 positive manual P 336 32.0457 50 -0.36 45
IV.CAMP.HHZ. 2024-04-02T22:22:03.56 0.6 undecidable manual P 154 29.4483 50 0.4 45
7F.SIB2.EHZ. 2024-04-02T22:22:03.06 0.6 undecidable manual S 18 13.6752 128 -0.13 49
IV.LNSS.HHZ. 2024-04-02T22:22:02.58 0.1 negative manual P 222 25.5522 50 0 98
7F.SIB3.EHZ. 2024-04-02T22:22:02.56 0.6 undecidable manual S 8 11.3775 133 0 50
IV.MC2.EHZ. 2024-04-02T22:22:01.08 0.1 undecidable manual P 342 16.0728 124 0.05 99
IV.SMA1.EHZ. 2024-04-02T22:22:01.23 0.1 negative manual P 156 17.3715 122 -0.02 100
IV.NRCA.HHZ. 2024-04-02T22:22:00.59 0.1 positive manual P 301 12.876 130 0.07 99
7F.SIB3.EHZ. 2024-04-02T22:22:00.33 0.1 undecidable manual P 8 11.3775 133 0.05 100
IV.MMO1.EHZ. 2024-04-02T22:22:00.77 1.0 undecidable manual P 24 15.2736 125 -0.12 24
7F.SIB2.EHZ. 2024-04-02T22:22:00.58 0.1 undecidable manual P 18 13.6752 128 -0.06 99
IV.MTRA.HNZ. 2024-04-02T22:22:00.46 0.3 undecidable manual P 99 12.0768 132 0.07 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.0 0.00009535 0.96 AML other m 2024-04-02T22:22:03.09
IV.MMO1.EHE. ML:1.0 0.00009285000000000001 0.38 AML other m 2024-04-02T22:22:03.64
IV.MMO1.EHN. ML:1.4 0.00023199999999999997 0.22 AML other m 2024-04-02T22:22:03.63
IV.NRCA.HHE. ML:1.1 0.0001415 0.58 AML other m 2024-04-02T22:22:03.79
IV.SMA1.EHN. ML:1.0 0.00008665 0.24 AML other m 2024-04-02T22:22:04.43
IV.SMA1.EHE. ML:1.0 0.0000868 0.18 AML other m 2024-04-02T22:22:04.36
IV.LNSS.HHE. ML:1.1 0.00006670000000000001 1.04 AML other m 2024-04-02T22:22:07.73
IV.LNSS.HHN. ML:1.0 0.00005495 1.34 AML other m 2024-04-02T22:22:07.91
IV.RM33.EHN. ML:1.2 0.00007985 0.2 AML other m 2024-04-02T22:22:07.84
IV.FDMO.HHN. ML:1.0 0.0000378 1.56 AML other m 2024-04-02T22:22:08.21
IV.FDMO.HHE. ML:0.8 0.000028950000000000002 0.2 AML other m 2024-04-02T22:22:08.34
IV.RM33.EHE. ML:1.1 0.00005895 0.24 AML other m 2024-04-02T22:22:09.21
IV.CESI.HHN. ML:1.0 0.000037749999999999996 0.36 AML other m 2024-04-02T22:22:10.28
IV.CESI.HHE. ML:0.8 0.0000275 0.6 AML other m 2024-04-02T22:22:10.57
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