Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 27-02-2024 and time 17:43:20 (UTC) in region 4 km SE Amatrice (RI)

A magnitude ML 1.6 earthquake occured in region: 4 km SE Amatrice (RI), on

  • 27-02-2024 17:43:20 (UTC)
  • 27-02-2024 18:43:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6000, 13.3130 at 12 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 4 2657 2657
Campotosto AQ 7 542 3199
Capitignano AQ 9 665 3864
Montereale AQ 10 2581 6445
Accumoli RI 12 667 7112
Cittareale RI 13 482 7594
Crognaleto TE 15 1297 8891
Cortino TE 16 656 9547
Barete AQ 17 737 10284
Cagnano Amiterno AQ 17 1369 11653
Borbona RI 18 617 12270
Pizzoli AQ 18 4326 16596
Fano Adriano TE 19 296 16892
Arquata del Tronto AP 19 1178 18070
Posta RI 20 694 18764

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
75 Km W of Pescara (121014 inhabitants)
75 Km W of Chieti (51815 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
94 Km SE of Perugia (166134 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 1.6 2024-02-27
17:43:20		 42.6002 13.3132 13 2024-02-27
17:50:13		 Sala Sismica INGV-Roma 125580641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-27 17:43:20 ± 0.06
Latitude 42.6002 ± 0.0036
Longitude 13.3132 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125580641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 346
Semi-minor axis of confidence ellipse (meter) 254
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29947
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 125580641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-27 17:50:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PP3.EHZ. 2024-02-27T17:43:47.41 3.0 undecidable manual S -2.02 0
IV.ARRO.EHZ. 2024-02-27T17:43:35.40 3.0 undecidable manual S -0.47 0
7F.SIB1.EHZ. 2024-02-27T17:43:32.57 0.3 undecidable manual S 354 32.8449 94 0.44 67
IV.CSP1.EHZ. 2024-02-27T17:43:31.14 3.0 positive manual P 0.06 0
7F.SIB2.EHN. 2024-02-27T17:43:31.86 0.3 undecidable manual S 359 32.2455 94 -0.11 72
IV.GIGS.HHZ. 2024-02-27T17:43:30.44 0.3 undecidable manual S 127 26.751 96 -0.06 73
IV.LNSS.HHZ. 2024-02-27T17:43:29.12 0.6 undecidable manual S 271 22.2555 99 -0.2 47
IV.TERO.HNZ. 2024-02-27T17:43:29.57 0.1 undecidable manual S 84 23.8539 98 -0.17 96
IV.MF5.EHZ. 2024-02-27T17:43:29.74 3.0 positive manual P 0.35 0
IV.MTRA.EHZ. 2024-02-27T17:43:28.02 0.1 undecidable manual S 21 18.6702 103 -0.34 94
IV.MMO1.EHZ. 2024-02-27T17:43:27.56 0.1 positive manual P 2 33.2445 94 0.13 95
7F.SIB2.EHN. 2024-02-27T17:43:27.27 0.1 undecidable manual P 359 32.2455 94 -0.02 97
IV.NRCA.HHZ. 2024-02-27T17:43:27.02 0.1 undecidable manual P 328 30.5472 95 0 98
7F.SIB1.EHZ. 2024-02-27T17:43:27.47 0.1 undecidable manual P 354 32.8449 94 0.09 96
IV.TERO.HNZ. 2024-02-27T17:43:26.05 0.1 undecidable manual P 84 23.8539 98 0.06 98
IV.GIGS.HHZ. 2024-02-27T17:43:26.51 0.3 undecidable manual P 127 26.751 96 0.07 73
7F.SIB3.EHN. 2024-02-27T17:43:26.99 0.1 undecidable manual P 353 30.747 95 -0.05 97
IV.CAMP.HHZ. 2024-02-27T17:43:26.29 0.6 undecidable manual S 132 10.5783 127 -0.11 50
IV.RM33.EHZ. 2024-02-27T17:43:26.68 0.6 undecidable manual S 219 12.9759 118 -0.25 48
IV.SMA1.EHZ. 2024-02-27T17:43:25.12 0.6 undecidable manual S 28 3.7962 158 -0.18 50
IV.MTRA.EHZ. 2024-02-27T17:43:25.20 0.1 undecidable manual P 21 18.6702 103 0 100
IV.LNSS.HHZ. 2024-02-27T17:43:25.79 0.3 positive manual P 271 22.2555 99 0.04 74
IV.CAMP.HHZ. 2024-02-27T17:43:24.27 0.6 undecidable manual P 132 10.5783 127 0.2 49
IV.RM33.EHZ. 2024-02-27T17:43:24.50 0.1 positive manual P 219 12.9759 118 0.12 99
IV.SMA1.EHZ. 2024-02-27T17:43:23.58 0.1 positive manual P 28 3.7962 158 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.7 0.00045900000000000004 0.34 AML other m 2024-02-27T17:43:26.98
IV.RM33.EHE. ML:1.8 0.0006075000000000001 0.14 AML other m 2024-02-27T17:43:27.09
IV.RM33.HNE. ML:1.8 0.0006014999999999999 0.14 AML other m 2024-02-27T17:43:27.02
IV.RM33.HNN. ML:1.7 0.0004945 0.94 AML other m 2024-02-27T17:43:27.98
IV.MTRA.EHE. ML:1.6 0.0003105 0.26 AML other m 2024-02-27T17:43:28.30
IV.MTRA.HNE. ML:1.6 0.000319 0.22 AML other m 2024-02-27T17:43:28.30
IV.MTRA.EHN. ML:1.5 0.0002255 0.42 AML other m 2024-02-27T17:43:28.33
IV.LNSS.HHN. ML:1.4 0.00015900000000000002 0.8 AML other m 2024-02-27T17:43:29.27
IV.MTRA.HNN. ML:1.6 0.00028399999999999996 0.88 AML other m 2024-02-27T17:43:29.90
IV.TERO.HHN. ML:1.3 0.00012590000000000002 0.52 AML other m 2024-02-27T17:43:29.98
IV.LNSS.HHE. ML:1.6 0.000254 0.38 AML other m 2024-02-27T17:43:29.82
IV.TERO.HHE. ML:1.4 0.000146 1 AML other m 2024-02-27T17:43:30.80
IV.NRCA.HHE. ML:1.4 0.00011975 0.58 AML other m 2024-02-27T17:43:31.53
IV.NRCA.HHN. ML:1.2 0.00007985 0.12 AML other m 2024-02-27T17:43:32.40
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