Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 26-09-2020 and time 17:50:17 (UTC) in region 4 km E Lucoli (AQ)

A magnitude ML 1.4 earthquake occured in region: 4 km E Lucoli (AQ), on

  • 26-09-2020 17:50:17 (UTC)
  • 26-09-2020 19:50:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3080, 13.3820 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
Lucoli AQ 4 1011 1011
L'Aquila AQ 5 69753 70764
Tornimparte AQ 7 3187 73951
Ocre AQ 8 1167 75118
Fossa AQ 9 721 75839
Rocca di Cambio AQ 12 533 76372
Sant'Eusanio Forconese AQ 12 394 76766
Scoppito AQ 13 3727 80493
Poggio Picenze AQ 13 1136 81629
Villa Sant'Angelo AQ 14 424 82053
San Demetrio ne' Vestini AQ 15 1854 83907
Rocca di Mezzo AQ 16 1526 85433
Pizzoli AQ 16 4326 89759
Fagnano Alto AQ 17 418 90177
Barisciano AQ 17 1828 92005
Borgorose RI 18 4591 96596
Barete AQ 18 737 97333
Prata d'Ansidonia AQ 19 496 97829

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km S of L'Aquila (69753 inhabitants)
47 Km SW of Teramo (54892 inhabitants)
61 Km NE of Tivoli (56533 inhabitants)
64 Km NE of Guidonia Montecelio (88673 inhabitants)
65 Km W of Chieti (51815 inhabitants)
67 Km E of Terni (111501 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
71 Km W of Pescara (121014 inhabitants)
85 Km NE of Velletri (53303 inhabitants)
87 Km NE of Roma (2864731 inhabitants)
91 Km SE of Foligno (57155 inhabitants)
100 Km NE of Aprilia (73446 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 1.4 2020-09-26
17:50:17		 42.3077 13.3818 10 2020-09-26
18:02:22		 Sala Sismica INGV-Roma 83278341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-26 17:50:17 ± 0.11
Latitude 42.3077 ± 0.0063
Longitude 13.3818 ± 0.0073
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 83278341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 629
Semi-minor axis of confidence ellipse (meter) 612
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 353
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30217
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 83278341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-26 18:02:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MILZ.HHZ. 2020-09-26T17:52:07.74 3.0 undecidable manual Sn -9.72 0
IV.OPPE.HNZ. 2020-09-26T17:51:57.75 3.0 undecidable manual Sg 3.1 0
IV.MTGR.HHZ. 2020-09-26T17:51:34.34 3.0 positive manual Pg 6.52 0
XK.GIZZ.HHZ. 2020-09-26T17:51:31.42 3.0 positive manual Pg 10.42 0
IV.MILZ.HHZ. 2020-09-26T17:51:30.45 3.0 positive manual Pg 5.02 0
IV.CAGR.HHZ. 2020-09-26T17:51:26.15 3.0 undecidable manual Pn -6.01 0
IV.SBPO.HNZ. 2020-09-26T17:51:10.28 3.0 negative manual Pn -0.65 0
IV.ARCI.HHZ. 2020-09-26T17:51:08.39 3.0 undecidable manual S -0.89 0
IV.MOCL.EHZ. 2020-09-26T17:51:00.57 3.0 undecidable manual Pg 2.34 0
IV.CSP1.EHZ. 2020-09-26T17:50:32.60 3.0 positive manual P -2.36 0
IV.T0110.HHZ. 2020-09-26T17:50:29.85 0.3 undecidable manual S 105 33.5442 50 0.74 61
IV.PTQR.HHE. 2020-09-26T17:50:28.00 0.3 undecidable manual S 177 31.746 50 -0.64 64
IV.RM33.EHZ. 2020-09-26T17:50:27.37 0.3 undecidable manual S 329 26.1516 110 0.28 71
IV.FIAM.HHZ. 2020-09-26T17:50:26.18 0.3 undecidable manual S 259 22.1556 114 0.39 70
IV.CAMP.HHZ. 2020-09-26T17:50:26.72 0.3 undecidable manual S 5 25.3524 111 -0.11 74
IV.GIGS.HHZ. 2020-09-26T17:50:25.72 0.3 undecidable manual S 44 22.4553 113 -0.17 73
IV.FAGN.HHZ. 2020-09-26T17:50:24.57 0.3 undecidable manual S 106 17.1717 119 0.32 72
IV.T0110.HHZ. 2020-09-26T17:50:24.32 0.1 undecidable manual P 105 33.5442 50 0.16 96
IV.RM33.EHZ. 2020-09-26T17:50:23.02 0.1 undecidable manual P 329 26.1516 110 0.03 100
IV.PTQR.HHE. 2020-09-26T17:50:23.23 0.6 undecidable manual P 177 31.746 50 -0.66 42
IV.FIAM.HHZ. 2020-09-26T17:50:22.50 0.6 negative manual P 259 22.1556 114 0.26 48
IV.CAMP.HHZ. 2020-09-26T17:50:22.75 0.1 undecidable manual P 5 25.3524 111 -0.09 99
IV.GIGS.HHZ. 2020-09-26T17:50:22.18 0.1 undecidable manual P 44 22.4553 113 -0.12 99
IV.FAGN.HHZ. 2020-09-26T17:50:21.45 0.6 negative manual P 106 17.1717 119 0.1 50
MN.AQU.HNZ. 2020-09-26T17:50:21.13 0.3 undecidable manual S 20 5.4945 150 -0.13 76
MN.AQU.HNZ. 2020-09-26T17:50:19.32 0.1 undecidable manual P 20 5.4945 150 -0.31 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHE. ML:0.8 0.000038783714999999994 0.4608 AML other m 2020-09-26T17:50:31.30
IV.FAGN.HHN. ML:1.9 0.0007556515500000001 0.32 AML other m 2020-09-26T17:50:26.50
IV.FIAM.HHN. ML:0.8 0.00004573166 0.32 AML other m 2020-09-26T17:50:28.78
IV.CAMP.HHE. ML:1.1 0.000079065235 0.3456 AML other m 2020-09-26T17:50:26.91
IV.CAMP.HHN. ML:1.4 0.0001665343 0.512 AML other m 2020-09-26T17:50:27.50
IV.RM33.EHE. ML:1.4 0.0001508313 0.3584 AML other m 2020-09-26T17:50:30.74
IV.RM33.EHN. ML:1.4 0.000151537 0.384 AML other m 2020-09-26T17:50:29.40
IV.RM33.HNE. ML:1.6 0.000200677 0.2816 AML other m 2020-09-26T17:50:29.37
IV.RM33.HNN. ML:1.5 0.00017991645 0.2432 AML other m 2020-09-26T17:50:27.51
IV.T0110.HHE. ML:1.7 0.000194906 0.5504 AML other m 2020-09-26T17:50:35.58
IV.T0110.HHN. ML:1.4 0.00010385412 0.256 AML other m 2020-09-26T17:50:31.67
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