Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 11-05-2024 and time 22:41:48 (Italy) in region 2 km NW Montegallo (AP)

A magnitude ML 0.9 earthquake occured in region: 2 km NW Montegallo (AP), on

  • 11-05-2024 20:41:48 (UTC)
  • 11-05-2024 22:41:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8550, 13.3230 at 25 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
Montegallo AP 2 523 523
Montemonaco AP 5 604 1127
Arquata del Tronto AP 9 1178 2305
Montefortino FM 10 1178 3483
Acquasanta Terme AP 12 2916 6399
Palmiano AP 12 196 6595
Roccafluvione AP 13 2010 8605
Comunanza AP 14 3166 11771
Venarotta AP 14 2066 13837
Amandola FM 14 3629 17466
Castelsantangelo sul Nera MC 15 281 17747
Bolognola MC 17 142 17889
Ussita MC 18 444 18333
Force AP 18 1354 19687
Montefalcone Appennino FM 19 424 20111
Accumoli RI 19 667 20778
Valle Castellana TE 20 977 21755
Smerillo FM 20 365 22120
Norcia PG 20 4957 27077

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of Teramo (54892 inhabitants)
52 Km E of Foligno (57155 inhabitants)
56 Km N of L'Aquila (69753 inhabitants)
64 Km NE of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km E of Perugia (166134 inhabitants)
85 Km NW of Pescara (121014 inhabitants)
86 Km S of Ancona (100861 inhabitants)
89 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 0.9 2024-05-11
20:41:48		 42.8548 13.323 25 2024-05-11
20:46:41		 Sala Sismica INGV-Roma 127619761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-05-11 20:41:48 ± 0.15
Latitude 42.8548 ± 0.0036
Longitude 13.3230 ± 0.0061
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 127619761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
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 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.15468
Epicentral distance of station farthest from the epicenter (degree) 0.35433
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 127619761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-05-11 20:46:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2024-05-11T20:42:01.01 0.6 undecidable manual S 138 34.4433 120 0.23 47
IV.CESI.HHZ. 2024-05-11T20:42:01.93 0.6 undecidable manual S 296 37.8288 117 0.35 45
IV.CSP1.EHZ. 2024-05-11T20:41:59.24 0.6 undecidable manual S 340 27.9498 126 -0.09 49
IV.GUMA.HHZ. 2024-05-11T20:41:58.55 0.6 undecidable manual S 2 23.0547 132 0.24 47
IV.SMA1.EHZ. 2024-05-11T20:41:58.52 0.6 undecidable manual S 178 24.8529 130 -0.15 48
IV.NRCA.HHZ. 2024-05-11T20:41:57.09 0.6 undecidable manual S 262 17.1717 141 -0.12 49
IV.RM33.EHZ. 2024-05-11T20:41:56.31 1.0 positive manual P 193 39.3273 116 0.22 23
IV.CESI.HHZ. 2024-05-11T20:41:55.90 0.3 undecidable manual P 296 37.8288 117 0.01 72
IV.TERO.HHZ. 2024-05-11T20:41:55.35 0.6 undecidable manual P 138 34.4433 120 -0.07 48
IV.GUMA.HHZ. 2024-05-11T20:41:54.01 1.0 undecidable manual P 2 23.0547 132 0.01 25
IV.SMA1.EHZ. 2024-05-11T20:41:54.23 0.6 undecidable manual P 178 24.8529 130 0.02 49
IV.CSP1.EHZ. 2024-05-11T20:41:54.41 0.1 positive manual P 340 27.9498 126 -0.18 95
IV.MF5.EHZ. 2024-05-11T20:41:53.49 0.1 undecidable manual P 37 18.4704 139 0 100
IV.NRCA.HHZ. 2024-05-11T20:41:53.27 0.1 undecidable manual P 262 17.1717 141 -0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.00008405 0.16 AML other m 2024-05-11T20:41:57.24
IV.NRCA.HHE. ML:1.2 0.00007325 0.48 AML other m 2024-05-11T20:41:57.58
IV.SMA1.EHE. ML:0.8 0.00002325 0.48 AML other m 2024-05-11T20:41:59.36
IV.SMA1.EHN. ML:0.7 0.000019950000000000004 0.78 AML other m 2024-05-11T20:41:59.25
IV.TERO.HHN. ML:1.0 0.0000282 0.54 AML other m 2024-05-11T20:42:01.17
IV.TERO.HHE. ML:0.9 0.0000235 0.42 AML other m 2024-05-11T20:42:02.07
IV.CESI.HHE. ML:0.8 0.0000189 1.04 AML other m 2024-05-11T20:42:02.61
IV.CESI.HHN. ML:1.0 0.0000313 0.28 AML other m 2024-05-11T20:42:03.80
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