Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 21-09-2023 and time 01:17:51 (Italy) in region 5 km W L'Aquila (AQ)

A magnitude ML 2.4 earthquake occured in region: 5 km W L'Aquila (AQ), on

  • 20-09-2023 23:17:51 (UTC)
  • 21-09-2023 01:17:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3520, 13.3370 at 10 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
L'Aquila AQ 5 69753 69753
Lucoli AQ 7 1011 70764
Scoppito AQ 7 3727 74491
Tornimparte AQ 7 3187 77678
Pizzoli AQ 10 4326 82004
Barete AQ 12 737 82741
Ocre AQ 14 1167 83908
Fossa AQ 14 721 84629
Cagnano Amiterno AQ 15 1369 85998
Sant'Eusanio Forconese AQ 17 394 86392
Poggio Picenze AQ 17 1136 87528
Rocca di Cambio AQ 18 533 88061
Villa Sant'Angelo AQ 19 424 88485
Capitignano AQ 19 665 89150
Borgorose RI 19 4591 93741
San Demetrio ne' Vestini AQ 20 1854 95595
Fiamignano RI 20 1413 97008

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km W of L'Aquila (69753 inhabitants)
46 Km SW of Teramo (54892 inhabitants)
61 Km E of Terni (111501 inhabitants)
62 Km NE of Tivoli (56533 inhabitants)
64 Km NE of Guidonia Montecelio (88673 inhabitants)
68 Km W of Chieti (51815 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
73 Km W of Pescara (121014 inhabitants)
85 Km SE of Foligno (57155 inhabitants)
87 Km NE of Roma (2864731 inhabitants)
87 Km NE of Velletri (53303 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 2.4 2023-09-20
23:17:51		 42.3515 13.3367 10 2023-09-20
23:24:48		 Sala Sismica INGV-Roma 121289871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-20 23:17:51 ± 0.07
Latitude 42.3515 ± 0.0036
Longitude 13.3367 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121289871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 408
Semi-minor axis of confidence ellipse (meter) 238
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.54949
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 82
Type of magnitude ML
Reference to an origin 121289871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-20 23:24:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.CANO.HHZ. 2023-09-20T23:19:49.21 3.0 undecidable manual Sn 5.43 0
IV.ZCCA.HNZ. 2023-09-20T23:19:07.72 3.0 undecidable manual Sn 1.12 0
CR.STON.BHZ. 2023-09-20T23:18:44.62 3.0 negative manual Pn 2.5 0
IV.ZCCA.HNZ. 2023-09-20T23:18:39.04 3.0 undecidable manual Pg 5.49 0
IV.SGRT.HHZ. 2023-09-20T23:18:26.10 3.0 positive manual Pg 2.86 0
IV.ASSB.HHZ. 2023-09-20T23:18:21.13 3.0 undecidable manual S -0.33 0
IV.CAFI.HHZ. 2023-09-20T23:18:19.28 3.0 positive manual P 2.67 0
IV.SACS.HHZ. 2023-09-20T23:18:15.23 3.0 positive manual P 1.92 0
IV.FRON.EHZ. 2023-09-20T23:18:15.39 3.0 undecidable manual P 0.88 0
IV.TRIV.HHZ. 2023-09-20T23:18:14.21 3.0 positive manual P 2.15 0
IV.ARVD.HHZ. 2023-09-20T23:18:14.39 3.0 undecidable manual P 0.8 0
IV.MGAB.HHZ. 2023-09-20T23:18:11.98 3.0 positive manual P 0.06 0
IV.MMO1.EHZ. 2023-09-20T23:18:11.42 3.0 undecidable manual S -0.03 0
IV.ATCC.EHZ. 2023-09-20T23:18:10.32 3.0 positive manual P -0.21 0
IV.INTR.HHZ. 2023-09-20T23:18:10.41 0.6 undecidable manual S 129 59.9955 50 0.36 44
IV.MTCE.HHZ. 2023-09-20T23:18:10.43 0.6 undecidable manual S 233 60.9945 50 0.12 46
IV.MIDA.HHZ. 2023-09-20T23:18:10.05 3.0 negative manual P -0.49 0
IV.CING.HHZ. 2023-09-20T23:18:10.94 3.0 negative manual P -0.54 0
IV.SNTG.HHZ. 2023-09-20T23:18:09.61 3.0 undecidable manual P -0.39 0
IV.GAVE.EHZ. 2023-09-20T23:18:08.37 0.6 undecidable manual S 316 52.3032 50 0.37 44
IV.CERT.HHZ. 2023-09-20T23:18:08.29 0.6 undecidable manual S 213 53.3022 50 0.02 48
IV.GIUL.HHZ. 2023-09-20T23:18:07.34 3.0 negative manual P 0.37 0
IV.MML1.EHZ. 2023-09-20T23:18:07.06 3.0 undecidable manual P -0.32 0
IV.ASSB.HHZ. 2023-09-20T23:18:07.35 3.0 undecidable manual P -0.84 0
IV.GUMA.HHZ. 2023-09-20T23:18:05.50 3.0 undecidable manual P -0.1 0
IV.FDMO.HHZ. 2023-09-20T23:18:05.17 3.0 positive manual P -0.38 0
IV.T0110.HHZ. 2023-09-20T23:18:05.24 0.6 undecidable manual S 110 38.5281 50 0.93 37
IV.LRP.EHZ. 2023-09-20T23:18:05.44 3.0 positive manual P -0.31 0
IV.CSP1.EHZ. 2023-09-20T23:18:05.54 3.0 positive manual P -0.71 0
IV.MOMA.HHZ. 2023-09-20T23:18:05.31 3.0 undecidable manual P -0.49 0
IV.LPEL.HHZ. 2023-09-20T23:18:04.53 3.0 positive manual P -0.74 0
IV.MF5.EHZ. 2023-09-20T23:18:04.21 3.0 negative manual P -0.12 0
IV.OFFI.HHZ. 2023-09-20T23:18:04.81 3.0 negative manual P 0.57 0
IV.PTQR.HHZ. 2023-09-20T23:18:03.48 0.6 undecidable manual S 172 36.9297 50 -0.41 45
IV.TERO.HNZ. 2023-09-20T23:18:03.16 0.6 undecidable manual S 36 37.2294 50 -0.8 39
IV.LNSS.HHZ. 2023-09-20T23:18:03.94 0.6 undecidable manual S 319 36.9297 50 0.04 49
IV.MMO1.EHZ. 2023-09-20T23:18:02.15 3.0 negative manual P -0.42 0
IV.SMA1.EHZ. 2023-09-20T23:18:02.89 0.6 undecidable manual S 360 30.9468 50 0.6 43
IV.MTCE.HHZ. 2023-09-20T23:18:02.10 0.3 negative manual P 233 60.9945 50 -0.15 69
IV.INTR.HHZ. 2023-09-20T23:18:01.88 0.6 positive manual P 129 59.9955 50 -0.22 45
IV.CERT.HHZ. 2023-09-20T23:18:00.51 1.0 undecidable manual P 213 53.3022 50 -0.57 21
IV.GAVE.EHZ. 2023-09-20T23:18:00.99 0.3 positive manual P 316 52.3032 50 0.07 71
IV.GIGS.HHZ. 2023-09-20T23:17:59.30 0.6 undecidable manual S 60 22.3554 113 -0.42 46
IV.VCEL.EHZ. 2023-09-20T23:17:59.39 0.1 undecidable manual P 83 41.5251 50 0.12 95
IV.CAMP.HHZ. 2023-09-20T23:17:59.36 0.6 undecidable manual S 16 21.2676 114 -0.01 51
IV.FAGN.HHZ. 2023-09-20T23:17:59.80 0.6 undecidable manual S 115 22.3554 113 0.08 50
IV.LNSS.HHZ. 2023-09-20T23:17:58.36 0.1 undecidable manual P 319 36.9297 50 -0.19 95
IV.PTQR.HHZ. 2023-09-20T23:17:58.34 0.1 positive manual P 172 36.9297 50 -0.21 95
IV.TERO.HNZ. 2023-09-20T23:17:58.35 0.6 negative manual P 36 37.2294 50 -0.24 47
IV.FIAM.HNZ. 2023-09-20T23:17:58.94 0.6 undecidable manual S 243 20.2686 115 -0.1 50
IV.T0110.HHZ. 2023-09-20T23:17:58.79 0.3 positive manual P 110 38.5281 50 -0.01 74
IV.SMA1.EHZ. 2023-09-20T23:17:57.50 0.3 positive manual P 360 30.9468 50 -0.13 73
IV.FAGN.HHZ. 2023-09-20T23:17:56.31 0.1 negative manual P 115 22.3554 113 0.17 98
IV.FIAM.HNZ. 2023-09-20T23:17:56.00 0.1 negative manual P 243 20.2686 115 0.25 97
IV.GIGS.HHZ. 2023-09-20T23:17:56.08 0.1 negative manual P 60 22.3554 113 -0.06 100
IV.CAMP.HHZ. 2023-09-20T23:17:56.11 0.1 negative manual P 16 21.2676 114 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HNE. ML:2.9 0.005935 0.3 AML other m 2023-09-20T23:17:59.21
IV.FIAM.HHE. ML:2.9 0.00621 0.3 AML other m 2023-09-20T23:17:59.21
IV.CAMP.HHN. ML:2.5 0.002065 0.48 AML other m 2023-09-20T23:17:59.65
IV.GIGS.HHN. ML:2.2 0.000973 0.42 AML other m 2023-09-20T23:17:59.75
IV.GIGS.HHE. ML:2.3 0.00122 0.96 AML other m 2023-09-20T23:17:59.42
IV.FIAM.HNN. ML:2.7 0.003525 0.2 AML other m 2023-09-20T23:18:00.34
IV.FIAM.HHN. ML:2.7 0.003735 0.2 AML other m 2023-09-20T23:18:00.34
IV.FAGN.HHN. ML:3.3 0.013300000000000001 1.74 AML other m 2023-09-20T23:18:01.04
IV.FAGN.HHE. ML:3.4 0.0173 0.48 AML other m 2023-09-20T23:18:01.52
IV.CAMP.HHE. ML:2.2 0.0011604999999999999 0.44 AML other m 2023-09-20T23:18:03.16
IV.TERO.HNE. ML:2.4 0.000926 0.1 AML other m 2023-09-20T23:18:03.55
IV.PTQR.HHE. ML:2.3 0.0008235 0.56 AML other m 2023-09-20T23:18:03.89
IV.PTQR.HHN. ML:2.2 0.0006515 0.48 AML other m 2023-09-20T23:18:04.56
IV.SMA1.EHN. ML:2.5 0.0013700000000000001 0.28 AML other m 2023-09-20T23:18:04.72
IV.TERO.HNN. ML:2.6 0.00146 0.92 AML other m 2023-09-20T23:18:05.30
IV.LNSS.HHE. ML:2.4 0.001042 0.22 AML other m 2023-09-20T23:18:05.93
IV.LNSS.HHN. ML:2.6 0.0015049999999999998 0.18 AML other m 2023-09-20T23:18:06.14
IV.T0110.HHE. ML:2.7 0.0019000000000000002 0.66 AML other m 2023-09-20T23:18:07.19
IV.T0110.HHN. ML:2.7 0.001795 0.76 AML other m 2023-09-20T23:18:07.49
IV.SMA1.EHE. ML:2.6 0.001825 1.6 AML other m 2023-09-20T23:18:09.05
IV.VCEL.EHN. ML:3.0 0.00353 0.44 AML other m 2023-09-20T23:18:09.61
IV.VCEL.EHE. ML:3.0 0.0030949999999999997 1.12 AML other m 2023-09-20T23:18:09.22
IV.CERT.HNN. ML:2.5 0.0007070000000000001 0.24 AML other m 2023-09-20T23:18:10.17
IV.CERT.HHN. ML:2.5 0.0007295 0.24 AML other m 2023-09-20T23:18:10.18
IV.CERT.HNE. ML:2.4 0.0005859999999999999 0.56 AML other m 2023-09-20T23:18:10.21
IV.CERT.HHE. ML:2.4 0.0005895000000000001 0.56 AML other m 2023-09-20T23:18:10.21
IV.GAVE.EHE. ML:2.4 0.0006285 0.86 AML other m 2023-09-20T23:18:12.80
IV.INTR.HHE. ML:2.4 0.000536 0.26 AML other m 2023-09-20T23:18:13.12
IV.INTR.HNE. ML:2.4 0.0005225 0.56 AML other m 2023-09-20T23:18:13.26
IV.INTR.HNN. ML:2.6 0.000867 0.66 AML other m 2023-09-20T23:18:13.76
IV.INTR.HHN. ML:2.6 0.000874 0.68 AML other m 2023-09-20T23:18:13.76
IV.GAVE.EHN. ML:2.4 0.000614 0.24 AML other m 2023-09-20T23:18:14.05
IV.MMO1.EHE. ML:2.1 0.00026000000000000003 0.22 AML other m 2023-09-20T23:18:14.30
IV.MTCE.HHN. ML:2.0 0.000192 1.1 AML other m 2023-09-20T23:18:14.63
IV.MTCE.HHE. ML:1.9 0.0001615 0.86 AML other m 2023-09-20T23:18:14.65
IV.MMO1.EHN. ML:2.2 0.0002895 0.4 AML other m 2023-09-20T23:18:16.41
IV.LPEL.HHN. ML:2.5 0.00047799999999999996 0.56 AML other m 2023-09-20T23:18:16.28
IV.OFFI.HHE. ML:2.8 0.0010995 1.38 AML other m 2023-09-20T23:18:16.95
IV.LPEL.HNN. ML:2.4 0.0004095 0.7 AML other m 2023-09-20T23:18:17.47
IV.MOMA.HHN. ML:2.3 0.000256 0.72 AML other m 2023-09-20T23:18:18.34
IV.MF5.EHN. ML:2.4 0.00035950000000000006 1.32 AML other m 2023-09-20T23:18:18.83
IV.MOMA.HNE. ML:2.4 0.00033150000000000003 1.18 AML other m 2023-09-20T23:18:18.34
IV.LPEL.HHE. ML:2.5 0.000495 0.36 AML other m 2023-09-20T23:18:19.23
IV.LPEL.HNE. ML:2.5 0.000491 0.34 AML other m 2023-09-20T23:18:19.24
IV.OFFI.HHN. ML:2.7 0.0009415 0.54 AML other m 2023-09-20T23:18:19.52
IV.FDMO.HHE. ML:2.1 0.00016749999999999998 0.5 AML other m 2023-09-20T23:18:19.79
IV.MOMA.HNN. ML:2.3 0.000263 0.66 AML other m 2023-09-20T23:18:19.54
IV.MF5.EHE. ML:2.2 0.0002645 1.06 AML other m 2023-09-20T23:18:20.01
IV.MOMA.HHE. ML:2.2 0.000241 1.24 AML other m 2023-09-20T23:18:20.87
IV.LRP.EHN. ML:1.4 0.00003555 1.08 AML other m 2023-09-20T23:18:22.62
IV.FDMO.HHN. ML:2.1 0.000165 0.8 AML other m 2023-09-20T23:18:22.72
IV.LRP.EHE. ML:1.9 0.00011360000000000001 0.26 AML other m 2023-09-20T23:18:23.31
IV.CSP1.EHE. ML:2.5 0.000443 0.5 AML other m 2023-09-20T23:18:23.74
IV.GUMA.HHE. ML:2.7 0.000773 0.32 AML other m 2023-09-20T23:18:23.81
IV.GIUL.HHE. ML:2.0 0.000131 1.38 AML other m 2023-09-20T23:18:23.85
IV.GIUL.HHN. ML:2.1 0.00014800000000000002 0.34 AML other m 2023-09-20T23:18:24.43
IV.GUMA.HHN. ML:2.6 0.0006065 0.44 AML other m 2023-09-20T23:18:27.34
IV.GUMA.HNE. ML:2.7 0.0006795 0.36 AML other m 2023-09-20T23:18:27.33
IV.CSP1.EHN. ML:2.6 0.00046550000000000004 0.34 AML other m 2023-09-20T23:18:27.32
IV.ASSB.HHE. ML:2.1 0.00014700000000000002 0.3 AML other m 2023-09-20T23:18:28.97
IV.MML1.HNE. ML:2.2 0.0001875 0.58 AML other m 2023-09-20T23:18:29.02
IV.MML1.EHE. ML:2.2 0.0001855 0.6 AML other m 2023-09-20T23:18:29.02
IV.ATCC.EHN. ML:2.4 0.00019600000000000002 1.06 AML other m 2023-09-20T23:18:30.38
IV.ASSB.HHN. ML:2.1 0.00015150000000000002 1.2 AML other m 2023-09-20T23:18:30.94
IV.GUMA.HNN. ML:2.7 0.0006924999999999999 0.48 AML other m 2023-09-20T23:18:31.04
IV.MIDA.HHE. ML:2.1 0.00011300000000000001 1.12 AML other m 2023-09-20T23:18:32.11
IV.MML1.HNN. ML:2.2 0.0001895 0.42 AML other m 2023-09-20T23:18:32.68
IV.MML1.EHN. ML:2.2 0.000184 0.52 AML other m 2023-09-20T23:18:32.69
IV.ATCC.EHE. ML:2.4 0.00023050000000000002 1 AML other m 2023-09-20T23:18:33.55
IV.SNTG.HHE. ML:2.0 0.00009820000000000002 0.76 AML other m 2023-09-20T23:18:33.47
IV.SNTG.HHN. ML:2.0 0.00009715 0.36 AML other m 2023-09-20T23:18:33.46
IV.CING.HHN. ML:2.2 0.00013000000000000002 0.48 AML other m 2023-09-20T23:18:34.26
IV.MGAB.HHN. ML:2.3 0.00014150000000000002 0.3 AML other m 2023-09-20T23:18:35.30
IV.MGAB.HHE. ML:2.3 0.000143 0.4 AML other m 2023-09-20T23:18:35.43
IV.CING.HHE. ML:2.3 0.000156 0.28 AML other m 2023-09-20T23:18:35.54
IV.MGAB.HNN. ML:2.5 0.000235 1.44 AML other m 2023-09-20T23:18:37.20
IV.MGAB.HNE. ML:2.5 0.00023950000000000002 0.4 AML other m 2023-09-20T23:18:38.27
IV.ARVD.HHE. ML:2.3 0.0001305 0.5 AML other m 2023-09-20T23:18:39.07
IV.ARVD.HHN. ML:2.1 0.00007384999999999999 0.32 AML other m 2023-09-20T23:18:39.76
IV.MIDA.HHN. ML:2.0 0.00008724999999999999 0.48 AML other m 2023-09-20T23:18:40.31
IV.FRON.EHE. ML:2.2 0.0000842 1.28 AML other m 2023-09-20T23:18:42.72
IV.FRON.EHN. ML:2.4 0.0001295 0.54 AML other m 2023-09-20T23:18:42.38
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
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