Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 21-03-2024 and time 04:33:54 (Italy) in region 5 km SE Arquata del Tronto (AP)

A magnitude ML 1.0 earthquake occured in region: 5 km SE Arquata del Tronto (AP), on

  • 21-03-2024 03:33:54 (UTC)
  • 21-03-2024 04:33:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7310, 13.3220 at 21 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 5 1178 1178
Accumoli RI 7 667 1845
Acquasanta Terme AP 8 2916 4761
Amatrice RI 12 2657 7418
Montegallo AP 13 523 7941
Valle Castellana TE 14 977 8918
Rocca Santa Maria TE 18 537 9455
Cittareale RI 18 482 9937
Montemonaco AP 19 604 10541
Roccafluvione AP 19 2010 12551
Cortino TE 19 656 13207
Campotosto AQ 20 542 13749
Norcia PG 20 4957 18706

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km W of Teramo (54892 inhabitants)
43 Km N of L'Aquila (69753 inhabitants)
56 Km E of Foligno (57155 inhabitants)
58 Km E of Terni (111501 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
79 Km W of Pescara (121014 inhabitants)
81 Km NW of Chieti (51815 inhabitants)
87 Km E of Perugia (166134 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
100 Km S of Ancona (100861 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 2024-03-21
03:33:54		 42.7312 13.3223 21 2024-03-21
03:43:12		 Sala Sismica INGV-Roma 126022921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-21 03:33:54 ± 0.1
Latitude 42.7312 ± 0.0027
Longitude 13.3223 ± 0.0049
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126022921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 440
Semi-minor axis of confidence ellipse (meter) 93
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.06025
Epicentral distance of station farthest from the epicenter (degree) 0.37052
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 126022921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-21 03:43:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2024-03-21T03:34:04.85 0.6 undecidable manual S 118 25.9518 122 0.34 45
IV.RM33.EHZ. 2024-03-21T03:34:04.57 0.6 undecidable manual S 200 26.1516 121 0 48
IV.LNSS.HHZ. 2024-03-21T03:34:04.77 0.6 undecidable manual S 238 27.0507 120 0 49
IV.MC2.EHZ. 2024-03-21T03:34:04.26 0.6 undecidable manual S 332 22.755 126 0.45 45
IV.MMO1.EHZ. 2024-03-21T03:34:03.06 0.6 undecidable manual S 1 18.6702 133 0.1 49
IV.CAMP.HHZ. 2024-03-21T03:34:03.74 0.6 undecidable manual S 162 22.755 126 -0.08 49
IV.NRCA.HHZ. 2024-03-21T03:34:03.15 0.6 undecidable manual S 304 20.3685 130 -0.16 47
7F.SIB3.EHZ. 2024-03-21T03:34:02.57 0.6 undecidable manual S 345 16.5723 137 0.01 50
7F.SIB2.EHZ. 2024-03-21T03:34:02.69 0.6 undecidable manual S 355 17.7711 134 -0.11 48
ZO.PDN11.EHZ. 2024-03-21T03:34:02.64 0.6 undecidable manual S 290 17.4714 135 -0.09 48
IV.CSP1.EHZ. 2024-03-21T03:34:02.03 0.6 undecidable manual P 347 41.1255 109 -0.29 44
IV.MTRA.HNZ. 2024-03-21T03:34:01.10 0.6 undecidable manual S 65 6.6933 160 -0.06 50
IV.GIGS.HHZ. 2024-03-21T03:34:01.61 0.1 undecidable manual P 146 37.0296 112 -0.11 94
IV.SMA1.EHZ. 2024-03-21T03:34:01.38 0.6 undecidable manual S 175 11.1777 148 -0.31 48
IV.OFFI.HHZ. 2024-03-21T03:34:01.15 0.6 undecidable manual P 52 37.2294 111 -0.6 41
IV.LNSS.HHZ. 2024-03-21T03:34:00.33 0.1 undecidable manual P 238 27.0507 120 -0.01 97
IV.MC2.EHZ. 2024-03-21T03:34:00.13 0.1 undecidable manual P 332 22.755 126 0.34 92
IV.TERO.HHZ. 2024-03-21T03:34:00.22 0.6 negative manual P 118 25.9518 122 0.03 48
IV.RM33.EHZ. 2024-03-21T03:34:00.22 0.1 undecidable manual P 200 26.1516 121 -0.01 98
IV.MMO1.EHZ. 2024-03-21T03:33:59.39 0.1 undecidable manual P 1 18.6702 133 0.09 98
IV.CAMP.HHZ. 2024-03-21T03:33:59.79 0.1 undecidable manual P 162 22.755 126 0 98
IV.NRCA.HHZ. 2024-03-21T03:33:59.49 0.1 positive manual P 304 20.3685 130 -0.01 98
7F.SIB3.EHZ. 2024-03-21T03:33:59.11 0.1 undecidable manual P 345 16.5723 137 0.05 99
7F.SIB2.EHZ. 2024-03-21T03:33:59.21 0.1 undecidable manual P 355 17.7711 134 0.01 99
ZO.PDN11.EHZ. 2024-03-21T03:33:59.16 0.1 undecidable manual P 290 17.4714 135 -0.01 98
IV.MTRA.HNZ. 2024-03-21T03:33:58.29 0.1 undecidable manual P 65 6.6933 160 0.03 100
IV.SMA1.EHZ. 2024-03-21T03:33:58.60 0.1 undecidable manual P 175 11.1777 148 0.04 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.3 0.00014649999999999998 0.22 AML other m 2024-03-21T03:34:01.91
IV.SMA1.EHN. ML:1.2 0.00009715 0.12 AML other m 2024-03-21T03:34:01.81
IV.RM33.EHE. ML:0.9 0.00003505 0.76 AML other m 2024-03-21T03:34:04.27
IV.RM33.EHN. ML:1.0 0.000045249999999999995 0.8 AML other m 2024-03-21T03:34:04.82
IV.LNSS.HHN. ML:0.9 0.0000331 1.32 AML other m 2024-03-21T03:34:05.04
IV.LNSS.HHE. ML:0.9 0.00003665 0.32 AML other m 2024-03-21T03:34:05.10
IV.TERO.HHE. ML:1.0 0.000044145850000000004 0.06 AML other m 2024-03-21T03:34:05.01
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