Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 24-02-2023 and time 15:32:17 (UTC) in region 2 km S Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 2 km S Amatrice (RI), on

  • 24-02-2023 15:32:17 (UTC)
  • 24-02-2023 16:32:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6090, 13.2830 at 14 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
Amatrice RI 2 2657 2657
Campotosto AQ 9 542 3199
Montereale AQ 10 2581 5780
Capitignano AQ 10 665 6445
Accumoli RI 10 667 7112
Cittareale RI 10 482 7594
Borbona RI 16 617 8211
Cagnano Amiterno AQ 17 1369 9580
Crognaleto TE 17 1297 10877
Barete AQ 17 737 11614
Posta RI 18 694 12308
Arquata del Tronto AP 18 1178 13486
Cortino TE 19 656 14142
Pizzoli AQ 19 4326 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of L'Aquila (69753 inhabitants)
35 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
78 Km W of Chieti (51815 inhabitants)
78 Km W of Pescara (121014 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
99 Km E of Viterbo (67173 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 2023-02-24
15:32:17		 42.6088 13.2832 14 2023-02-24
17:18:13		 Sala Sismica INGV-Roma 114766821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-24 15:32:17 ± 0.08
Latitude 42.6088 ± 0.0036
Longitude 13.2832 ± 0.0049
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 114766821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 430
Semi-minor axis of confidence ellipse (meter) 14
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
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 16
Number of defining phases 16
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) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.26980
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 4
Type of magnitude ML
Reference to an origin 114766821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-24 17:18:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
7F.SIB3.EHZ. 2023-02-24T15:32:28.23 0.6 undecidable manual S 358 29.5482 98 0.07 49
MN.AQU.HNZ. 2023-02-24T15:32:28.15 0.3 undecidable manual S 161 29.9478 98 -0.13 73
IV.GIGS.HHE. 2023-02-24T15:32:28.00 0.3 undecidable manual S 126 29.3484 98 -0.1 73
IV.NRCA.HHN. 2023-02-24T15:32:27.76 0.3 undecidable manual S 331 28.4493 99 -0.11 74
IV.TERO.HHZ. 2023-02-24T15:32:27.11 0.3 undecidable manual S 87 26.2515 100 -0.18 73
IV.LNSS.HNZ. 2023-02-24T15:32:25.76 0.3 undecidable manual S 268 19.869 107 0.14 74
MN.AQU.HNZ. 2023-02-24T15:32:24.12 0.1 undecidable manual P 161 29.9478 98 0.28 95
IV.TERO.HHZ. 2023-02-24T15:32:23.44 0.1 undecidable manual P 87 26.2515 100 0.18 98
7F.SIB3.EHZ. 2023-02-24T15:32:23.60 0.1 undecidable manual P 358 29.5482 98 -0.17 97
IV.GIGS.HHE. 2023-02-24T15:32:23.62 0.3 undecidable manual P 126 29.3484 98 -0.11 73
IV.RM33.EHZ. 2023-02-24T15:32:23.57 0.3 undecidable manual S 207 12.3765 125 -0.27 73
IV.NRCA.HHN. 2023-02-24T15:32:23.62 0.1 undecidable manual P 331 28.4493 99 0.02 100
IV.SMA1.EHZ. 2023-02-24T15:32:22.38 0.3 undecidable manual S 61 4.8951 155 -0.16 76
IV.LNSS.HNZ. 2023-02-24T15:32:21.98 0.3 undecidable manual P 268 19.869 107 -0.32 72
IV.RM33.EHZ. 2023-02-24T15:32:21.48 0.1 positive manual P 207 12.3765 125 0.21 99
IV.SMA1.EHZ. 2023-02-24T15:32:20.88 0.1 negative manual P 61 4.8951 155 0.35 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:0.9 0.00011219999999999999 0.3 AML other m 2023-02-24T15:32:22.66
IV.SMA1.EHE. ML:1.3 0.0002445 0.42 AML other m 2023-02-24T15:32:22.57
IV.RM33.EHE. ML:0.8 0.000055849999999999996 1.38 AML other m 2023-02-24T15:32:23.08
IV.RM33.EHN. ML:0.8 0.00005265 0.3 AML other m 2023-02-24T15:32:23.95
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