Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 18-04-2024 and time 10:13:58 (Italy) in region 3 km S Montemonaco (AP)

A magnitude ML 1.8 earthquake occured in region: 3 km S Montemonaco (AP), on

  • 18-04-2024 08:13:58 (UTC)
  • 18-04-2024 10:13:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8740, 13.3300 at 24 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
Montemonaco AP 3 604 604
Montegallo AP 4 523 1127
Montefortino FM 8 1178 2305
Palmiano AP 11 196 2501
Arquata del Tronto AP 12 1178 3679
Comunanza AP 12 3166 6845
Roccafluvione AP 12 2010 8855
Amandola FM 12 3629 12484
Acquasanta Terme AP 13 2916 15400
Venarotta AP 13 2066 17466
Castelsantangelo sul Nera MC 15 281 17747
Bolognola MC 16 142 17889
Montefalcone Appennino FM 17 424 18313
Force AP 17 1354 19667
Smerillo FM 17 365 20032
Ussita MC 17 444 20476
Sarnano MC 18 3264 23740
Monte San Martino MC 20 765 24505

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of Teramo (54892 inhabitants)
52 Km E of Foligno (57155 inhabitants)
58 Km N of L'Aquila (69753 inhabitants)
66 Km NE of Terni (111501 inhabitants)
78 Km NW of Montesilvano (53738 inhabitants)
81 Km E of Perugia (166134 inhabitants)
84 Km S of Ancona (100861 inhabitants)
85 Km NW of Pescara (121014 inhabitants)
90 Km NW of Chieti (51815 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 2024-04-18
08:13:58		 42.8742 13.3298 24 2024-04-18
08:20:51		 Sala Sismica INGV-Roma 126854041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-18 08:13:58 ± 0.14
Latitude 42.8742 ± 0.0036
Longitude 13.3298 ± 0.0061
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126854041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 492
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51891
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 126854041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-18 08:20:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ECTS.HHZ. 2024-04-18T08:16:15.34 3.0 undecidable manual Sn 1.85 0
IV.SPS2.HHZ. 2024-04-18T08:15:53.72 3.0 undecidable manual Sn 2.82 0
IV.BAG8.EHZ. 2024-04-18T08:15:53.00 3.0 undecidable manual Sg 18.370001 0
IV.SALB.HHZ. 2024-04-18T08:15:36.02 3.0 undecidable manual Sn -3.08 0
ST.RONC.EHZ. 2024-04-18T08:15:36.86 3.0 undecidable manual Sn 0.55 0
IV.MPNC.HHZ. 2024-04-18T08:15:13.18 3.0 undecidable manual Pn 1.73 0
IV.IMOL.EHZ. 2024-04-18T08:14:59.54 3.0 undecidable manual Sg 6.77 0
GU.RNCA.HHZ. 2024-04-18T08:14:56.99 3.0 positive manual Pn 5.18 0
IV.BAG8.EHZ. 2024-04-18T08:14:55.99 3.0 positive manual Pn 3.6 0
OX.CAE.HHZ. 2024-04-18T08:14:53.07 3.0 positive manual Pg 6.01 0
IV.SFI.EHZ. 2024-04-18T08:14:48.00 3.0 undecidable manual Sg 4.72 0
IV.VAGA.HHZ. 2024-04-18T08:14:46.76 3.0 undecidable manual Sn 0.31 0
IV.ZCCA.HHZ. 2024-04-18T08:14:42.38 3.0 undecidable manual Pg 8.35 0
IV.CSNT.HHZ. 2024-04-18T08:14:30.78 3.0 negative manual Pg 5.72 0
IV.CESX.HHZ. 2024-04-18T08:14:21.71 3.0 undecidable manual S 1.71 0
IV.FIAM.HHZ. 2024-04-18T08:14:20.42 3.0 undecidable manual S -0.51 0
IV.ASSB.HHZ. 2024-04-18T08:14:16.88 0.6 undecidable manual S 289 57.5979 106 0.54 42
IV.SNTG.HHZ. 2024-04-18T08:14:15.39 0.6 undecidable manual S 323 52.7028 108 0.29 45
IV.GIGS.HHZ. 2024-04-18T08:14:14.92 0.6 undecidable manual S 157 50.7159 109 0.32 45
IV.GAVE.EHZ. 2024-04-18T08:14:12.92 0.6 undecidable manual S 241 40.8258 114 0.8 39
IV.RM33.EHZ. 2024-04-18T08:14:12.49 0.6 undecidable manual S 193 41.625 113 0.18 47
IV.TERO.HHZ. 2024-04-18T08:14:11.07 0.6 undecidable manual S 141 35.742 117 0.17 47
IV.LNSS.HHZ. 2024-04-18T08:14:11.95 0.6 undecidable manual S 218 38.2284 115 0.45 44
IV.CESI.HHZ. 2024-04-18T08:14:11.46 0.6 undecidable manual S 293 37.4292 116 0.15 47
IV.MML1.EHZ. 2024-04-18T08:14:11.38 0.6 undecidable manual S 313 39.3273 115 -0.39 45
IV.SNTG.HHZ. 2024-04-18T08:14:08.05 0.6 undecidable manual P 323 52.7028 108 0.17 46
IV.FDMO.HHZ. 2024-04-18T08:14:08.42 0.6 undecidable manual S 313 26.6511 126 -0.42 46
IV.ASSB.HHZ. 2024-04-18T08:14:08.52 0.6 negative manual P 289 57.5979 106 -0.08 46
IV.CSP1.EHZ. 2024-04-18T08:14:08.73 0.6 undecidable manual S 337 26.1516 127 -0.01 49
IV.SMA1.EHZ. 2024-04-18T08:14:08.61 0.6 undecidable manual S 179 27.0507 126 -0.31 46
IV.GUMA.HHZ. 2024-04-18T08:14:07.98 0.6 undecidable manual S 1 20.9679 134 0.32 47
IV.NRCA.HNZ. 2024-04-18T08:14:07.08 0.1 undecidable manual S 256 18.0708 139 -0.06 100
IV.MF5.EHZ. 2024-04-18T08:14:07.13 0.1 undecidable manual S 40 16.4724 142 0.27 95
IV.GIGS.HHZ. 2024-04-18T08:14:07.46 1.0 undecidable manual P 157 50.7159 109 -0.13 23
IV.MTRA.HNZ. 2024-04-18T08:14:06.26 0.1 undecidable manual S 157 14.0748 146 -0.23 97
IV.GAVE.EHZ. 2024-04-18T08:14:06.30 0.3 negative manual P 241 40.8258 114 0.14 71
IV.MML1.EHZ. 2024-04-18T08:14:05.74 0.6 positive manual P 313 39.3273 115 -0.22 46
IV.TERO.HHZ. 2024-04-18T08:14:05.42 1.0 undecidable manual P 141 35.742 117 -0.03 24
IV.LNSS.HHZ. 2024-04-18T08:14:05.86 0.1 positive manual P 218 38.2284 115 0.06 97
IV.CESI.HHZ. 2024-04-18T08:14:05.59 0.1 positive manual P 293 37.4292 116 -0.1 95
IV.RM33.EHZ. 2024-04-18T08:14:05.93 0.1 undecidable manual P 193 41.625 113 -0.34 90
IV.SMA1.EHZ. 2024-04-18T08:14:04.25 0.1 positive manual P 179 27.0507 126 -0.06 98
IV.FDMO.HHZ. 2024-04-18T08:14:04.01 0.1 undecidable manual P 313 26.6511 126 -0.26 94
IV.CSP1.EHZ. 2024-04-18T08:14:04.08 0.3 positive manual P 337 26.1516 127 -0.12 73
IV.MF5.EHZ. 2024-04-18T08:14:03.23 1.0 undecidable manual P 40 16.4724 142 0.11 25
IV.GUMA.HHZ. 2024-04-18T08:14:03.63 0.1 negative manual P 1 20.9679 134 0.05 99
IV.NRCA.HNZ. 2024-04-18T08:14:03.17 0.1 positive manual P 256 18.0708 139 -0.11 98
IV.MTRA.HNZ. 2024-04-18T08:14:02.87 1.0 positive manual P 157 14.0748 146 -0.04 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:2.1 0.0007190000000000001 0.22 AML other m 2024-04-18T08:14:06.81
IV.MTRA.EHE. ML:2.2 0.000883 0.8 AML other m 2024-04-18T08:14:06.91
IV.NRCA.HNE. ML:2.0 0.00047599999999999997 0.96 AML other m 2024-04-18T08:14:07.55
IV.NRCA.HHE. ML:2.0 0.0004605 0.96 AML other m 2024-04-18T08:14:07.55
IV.GUMA.HNN. ML:2.0 0.000459 0.7 AML other m 2024-04-18T08:14:08.15
IV.NRCA.HNN. ML:1.8 0.00034500000000000004 0.4 AML other m 2024-04-18T08:14:08.37
IV.NRCA.HHN. ML:1.8 0.00036449999999999997 0.38 AML other m 2024-04-18T08:14:08.37
IV.FDMO.HHN. ML:2.1 0.0005110000000000001 0.3 AML other m 2024-04-18T08:14:08.92
IV.FDMO.HHE. ML:2.0 0.0004335 0.24 AML other m 2024-04-18T08:14:08.94
IV.GUMA.HHN. ML:2.0 0.000481 0.56 AML other m 2024-04-18T08:14:08.56
IV.CSP1.EHN. ML:2.2 0.0006730000000000001 1.66 AML other m 2024-04-18T08:14:08.06
IV.CSP1.EHE. ML:2.3 0.0009375 1.58 AML other m 2024-04-18T08:14:08.92
IV.GUMA.HNE. ML:1.9 0.0003855 1.08 AML other m 2024-04-18T08:14:09.41
IV.GUMA.HHE. ML:1.7 0.000256 0.48 AML other m 2024-04-18T08:14:09.82
IV.SMA1.EHE. ML:1.5 0.00013800000000000002 0.92 AML other m 2024-04-18T08:14:10.57
IV.SMA1.EHN. ML:1.5 0.0001245 0.16 AML other m 2024-04-18T08:14:11.38
IV.TERO.HHN. ML:1.5 0.00009895 0.68 AML other m 2024-04-18T08:14:11.61
IV.MML1.EHE. ML:1.6 0.0001028 0.62 AML other m 2024-04-18T08:14:12.32
IV.CESI.HHN. ML:1.6 0.000127 1.76 AML other m 2024-04-18T08:14:12.90
IV.MML1.EHN. ML:1.7 0.00013350000000000002 0.16 AML other m 2024-04-18T08:14:12.07
IV.TERO.HHE. ML:1.3 0.00006365 0.08 AML other m 2024-04-18T08:14:12.29
IV.CESI.HHE. ML:1.6 0.0001205 0.46 AML other m 2024-04-18T08:14:12.06
IV.LNSS.HHN. ML:1.8 0.00021600000000000002 0.2 AML other m 2024-04-18T08:14:12.65
IV.LNSS.HHE. ML:1.9 0.000263 0.62 AML other m 2024-04-18T08:14:13.62
IV.RM33.EHN. ML:1.6 0.000101 0.62 AML other m 2024-04-18T08:14:13.77
IV.RM33.EHE. ML:1.6 0.00011449999999999999 0.12 AML other m 2024-04-18T08:14:13.65
IV.GAVE.EHE. ML:1.9 0.0002165 1 AML other m 2024-04-18T08:14:13.76
IV.GAVE.EHN. ML:1.8 0.00019600000000000002 0.2 AML other m 2024-04-18T08:14:14.18
IV.GIGS.HHN. ML:0.9 0.0000224 0.48 AML other m 2024-04-18T08:14:15.27
IV.GIGS.HHE. ML:1.0 0.0000266 0.5 AML other m 2024-04-18T08:14:17.66
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