Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 26-09-2022 and time 08:23:33 (UTC) in region 5 km N Accumoli (RI)

A magnitude ML 1.1 earthquake occured in region: 5 km N Accumoli (RI), on

  • 26-09-2022 08:23:33 (UTC)
  • 26-09-2022 10:23:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7400, 13.2490 at 11 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
Accumoli RI 5 667 667
Arquata del Tronto AP 6 1178 1845
Amatrice RI 13 2657 4502
Montegallo AP 13 523 5025
Acquasanta Terme AP 14 2916 7941
Norcia PG 14 4957 12898
Cittareale RI 15 482 13380
Montemonaco AP 19 604 13984
Castelsantangelo sul Nera MC 19 281 14265
Cascia PG 19 3217 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
45 Km N of L'Aquila (69753 inhabitants)
51 Km E of Foligno (57155 inhabitants)
53 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
87 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 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 1.1 2022-09-26
08:23:33		 42.7397 13.2488 11 2022-09-26
08:37:19		 Sala Sismica INGV-Roma 110171531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-09-26 08:23:33 ± 0.03
Latitude 42.7397 ± 0.0018
Longitude 13.2488 ± 0.0061
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 110171531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 450
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 271
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.10972
Epicentral distance of station farthest from the epicenter (degree) 0.36602
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 110171531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-09-26 08:37:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHZ. 2022-09-26T08:23:47.02 0.1 undecidable manual S 317 40.626 90 0.12 100
IV.CSP1.EHZ. 2022-09-26T08:23:46.78 0.3 undecidable manual S 355 39.2274 90 0.24 73
IV.TERO.HHZ. 2022-09-26T08:23:44.32 0.3 undecidable manual S 114 31.746 90 -0.21 75
IV.LNSS.HHZ. 2022-09-26T08:23:42.16 0.3 undecidable manual S 228 22.755 90 0.01 79
IV.RM33.EHZ. 2022-09-26T08:23:42.96 0.3 undecidable manual S 186 25.752 90 0.03 79
IV.CESI.HHZ. 2022-09-26T08:23:41.08 0.3 undecidable manual P 317 40.626 90 -0.2 74
IV.MMO1.EHZ. 2022-09-26T08:23:41.04 0.3 undecidable manual S 20 18.87 90 -0.05 80
IV.MC2.EHZ. 2022-09-26T08:23:41.59 0.6 undecidable manual S 346 19.6692 90 0.28 50
IV.CSP1.EHZ. 2022-09-26T08:23:40.62 0.3 undecidable manual P 355 39.2274 90 -0.45 71
7F.SIB2.EHZ. 2022-09-26T08:23:40.55 0.3 undecidable manual S 15 17.3715 90 -0.16 78
7F.SIB1.EHN. 2022-09-26T08:23:40.92 0.3 undecidable manual S 6 17.2716 90 0.24 76
IV.MTRA.EHN. 2022-09-26T08:23:39.37 0.6 undecidable manual S 81 12.1767 106 0.05 54
IV.NRCA.HHZ. 2022-09-26T08:23:39.88 0.3 undecidable manual S 314 15.0738 90 -0.22 78
IV.SMA1.EHZ. 2022-09-26T08:23:39.86 0.3 undecidable manual S 150 13.9749 91 0.06 80
IV.RM33.EHZ. 2022-09-26T08:23:39.06 0.3 undecidable manual P 186 25.752 90 0.07 78
7F.SIB3.EHZ. 2022-09-26T08:23:39.98 0.3 undecidable manual S 7 15.1737 90 -0.12 79
IV.TERO.HHZ. 2022-09-26T08:23:39.82 0.3 undecidable manual P 114 31.746 90 -0.09 77
IV.MC2.EHZ. 2022-09-26T08:23:38.18 0.3 undecidable manual P 346 19.6692 90 0.12 78
IV.LNSS.HHZ. 2022-09-26T08:23:38.49 0.3 undecidable manual P 228 22.755 90 -0.05 79
7F.SIB3.EHZ. 2022-09-26T08:23:37.37 0.3 undecidable manual P 7 15.1737 90 0.01 80
IV.NRCA.HHZ. 2022-09-26T08:23:37.37 0.3 undecidable manual P 314 15.0738 90 0.01 80
IV.SMA1.EHZ. 2022-09-26T08:23:37.29 0.3 undecidable manual P 150 13.9749 91 0.1 79
7F.SIB2.EHZ. 2022-09-26T08:23:37.65 0.3 undecidable manual P 15 17.3715 90 -0.05 80
7F.SIB1.EHN. 2022-09-26T08:23:37.84 0.3 undecidable manual P 6 17.2716 90 0.15 78
IV.MMO1.EHZ. 2022-09-26T08:23:37.95 0.3 undecidable manual P 20 18.87 90 0.02 80
IV.MTRA.EHN. 2022-09-26T08:23:36.95 0.6 undecidable manual P 81 12.1767 106 0.04 54
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.4 0.00014850000000000003 0.86 AML other m 2022-09-26T08:23:42.85
IV.LNSS.HHE. ML:1.3 0.0001205 0.6 AML other m 2022-09-26T08:23:42.48
IV.SMA1.EHE. ML:1.0 0.00008732856 0.1024 AML other m 2022-09-26T08:23:40.12
IV.SMA1.EHN. ML:0.8 0.00006743384499999999 0.1408 AML other m 2022-09-26T08:23:39.97
IV.MC2.EHE. ML:1.0 0.00007774325 0.48 AML other m 2022-09-26T08:23:41.68
IV.MC2.EHN. ML:1.2 0.00011944511 0.2432 AML other m 2022-09-26T08:23:41.81
IV.LNSS.HNE. ML:1.3 0.000116941815 1.2096 AML other m 2022-09-26T08:23:42.47
IV.LNSS.HNN. ML:1.2 0.00010704384999999999 0.4544 AML other m 2022-09-26T08:23:42.07
IV.RM33.HNE. ML:1.3 0.00012176539 1.8112 AML other m 2022-09-26T08:23:42.62
IV.RM33.HNN. ML:1.4 0.00012750716 1.3696 AML other m 2022-09-26T08:23:43.19
IV.RM33.EHE. ML:1.0 0.00005715638 0.16 AML other m 2022-09-26T08:23:43.99
IV.RM33.EHN. ML:1.0 0.000057732125000000004 0.2624 AML other m 2022-09-26T08:23:43.20
IV.TERO.HHE. ML:0.9 0.000035369265 0 AML other m 2022-09-26T08:23:44.48
IV.TERO.HHN. ML:0.8 0.0000228332475 0.16 AML other m 2022-09-26T08:23:44.43
IV.TERO.HNE. ML:1.4 0.0001244042 0.7488 AML other m 2022-09-26T08:23:43.68
IV.TERO.HNN. ML:1.5 0.00013821425 0.7808 AML other m 2022-09-26T08:23:42.55
IV.CSP1.EHE. ML:0.8 0.000026386804999999996 0.3008 AML other m 2022-09-26T08:23:47.07
IV.CSP1.EHN. ML:1.2 0.000057994994999999996 0.3008 AML other m 2022-09-26T08:23:48.33
IV.CESI.HNE. ML:1.4 0.00008885671 1.0368 AML other m 2022-09-26T08:23:47.30
IV.CESI.HHE. ML:0.8 0.00002068699 0.1984 AML other m 2022-09-26T08:23:47.67
IV.CESI.HHN. ML:1.0 0.000034290365000000004 0.1408 AML other m 2022-09-26T08:23:47.65
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download