Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-01-2022 and time 08:18:38 (UTC) in region 8 km W Accumoli (RI)

A magnitude ML 1.3 earthquake occured in region: 8 km W Accumoli (RI), on

  • 21-01-2022 08:18:38 (UTC)
  • 21-01-2022 09:18:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6960, 13.1520 at 16 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 8 667 667
Cittareale RI 9 482 1149
Cascia PG 12 3217 4366
Norcia PG 12 4957 9323
Amatrice RI 13 2657 11980
Arquata del Tronto AP 15 1178 13158
Monteleone di Spoleto PG 17 599 13757
Poggiodomo PG 18 117 13874
Posta RI 20 694 14568

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of L'Aquila (69753 inhabitants)
44 Km E of Terni (111501 inhabitants)
45 Km W of Teramo (54892 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
91 Km W of Pescara (121014 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
92 Km W of Chieti (51815 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 1.3 2022-01-21
08:18:38		 42.6962 13.1523 16 2022-01-21
08:22:40		 Sala Sismica INGV-Roma 100006381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-21 08:18:38 ± 0.1
Latitude 42.6962 ± 0.0036
Longitude 13.1523 ± 0.0049
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 100006381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 58
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33994
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 100006381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-21 08:22:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2022-01-21T08:18:51.27 0.3 undecidable manual S 102 37.7289 100 -0.27 68
IV.CAMP.HHN. 2022-01-21T08:18:48.87 0.6 undecidable manual S 130 27.4503 106 0 49
IV.MC2.EHZ. 2022-01-21T08:18:48.29 0.3 undecidable manual S 7 24.0537 110 0.28 72
IV.GAVE.EHZ. 2022-01-21T08:18:47.14 0.3 undecidable manual S 269 21.0678 114 -0.11 74
IV.RM33.EHZ. 2022-01-21T08:18:47.28 0.3 undecidable manual S 166 21.3675 113 -0.05 75
IV.MTRA.EHZ. 2022-01-21T08:18:47.04 0.3 undecidable manual S 71 20.9679 114 -0.21 70
IV.FDMO.HHZ. 2022-01-21T08:18:46.27 3.0 negative manual P 0.06 0
IV.SMA1.EHZ. 2022-01-21T08:18:46.43 0.3 undecidable manual S 116 16.5723 122 0.22 72
IV.LNSS.HHZ. 2022-01-21T08:18:45.50 0.3 undecidable manual S 221 13.7751 129 -0.09 76
IV.TERO.HHZ. 2022-01-21T08:18:45.94 0.6 undecidable manual P 102 37.7289 100 -0.26 45
IV.NRCA.HHZ. 2022-01-21T08:18:45.68 0.3 undecidable manual S 349 15.5733 124 -0.29 70
IV.MTRA.EHZ. 2022-01-21T08:18:44.23 0.6 negative manual P 71 20.9679 114 0.51 45
IV.MC2.EHZ. 2022-01-21T08:18:44.43 0.6 undecidable manual P 7 24.0537 110 0.27 48
IV.CAMP.HHN. 2022-01-21T08:18:44.67 0.3 undecidable manual P 130 27.4503 106 0.01 74
IV.SMA1.EHZ. 2022-01-21T08:18:43.24 0.6 negative manual P 116 16.5723 122 0.12 49
IV.GAVE.EHZ. 2022-01-21T08:18:43.73 0.1 positive manual P 269 21.0678 114 0 100
IV.RM33.EHZ. 2022-01-21T08:18:43.76 0.6 undecidable manual P 166 21.3675 113 -0.01 50
IV.NRCA.HHZ. 2022-01-21T08:18:42.95 0.1 undecidable manual P 349 15.5733 124 -0.04 99
IV.LNSS.HHZ. 2022-01-21T08:18:42.79 0.1 negative manual P 221 13.7751 129 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.6 0.00032673205 0.1408 AML other m 2022-01-21T08:18:45.74
IV.LNSS.HHN. ML:1.5 0.0002385554 0.1792 AML other m 2022-01-21T08:18:45.79
IV.LNSS.HNE. ML:1.6 0.0003221313 0.1408 AML other m 2022-01-21T08:18:45.74
IV.LNSS.HNN. ML:1.4 0.00020983586 0.1408 AML other m 2022-01-21T08:18:45.79
IV.NRCA.HHE. ML:1.6 0.0002982441 0.1792 AML other m 2022-01-21T08:18:45.85
IV.NRCA.HHN. ML:1.4 0.0002095495 0.1024 AML other m 2022-01-21T08:18:45.85
IV.NRCA.HNE. ML:1.6 0.0003048834 0.1856 AML other m 2022-01-21T08:18:45.86
IV.NRCA.HNN. ML:1.4 0.0001812702 0.5888 AML other m 2022-01-21T08:18:53.15
IV.SMA1.EHE. ML:1.6 0.00027075700000000005 0.16 AML other m 2022-01-21T08:18:46.83
IV.SMA1.EHN. ML:1.5 0.00021119809999999999 0.1408 AML other m 2022-01-21T08:18:46.89
IV.GAVE.HNE. ML:1.3 0.0001194305 0.2112 AML other m 2022-01-21T08:18:48.93
IV.GAVE.HNN. ML:1.4 0.00016404615 0.6144 AML other m 2022-01-21T08:18:44.50
IV.GAVE.EHE. ML:1.3 0.00013543705000000001 0.1984 AML other m 2022-01-21T08:18:47.26
IV.GAVE.EHN. ML:1.3 0.0001353371 0.1344 AML other m 2022-01-21T08:18:47.54
IV.RM33.HNE. ML:1.6 0.0002369176 0.7808 AML other m 2022-01-21T08:18:52.37
IV.RM33.HNN. ML:1.2 0.00010447890500000001 0.6208 AML other m 2022-01-21T08:18:55.36
IV.RM33.EHE. ML:0.9 0.000052455155 0.1984 AML other m 2022-01-21T08:18:49.31
IV.RM33.EHN. ML:1.1 0.000072251905 0.2368 AML other m 2022-01-21T08:18:47.43
IV.MTRA.HNE. ML:1.4 0.0001500714 0.7616 AML other m 2022-01-21T08:18:53.26
IV.MTRA.HNN. ML:1.2 0.000097778675 0.2624 AML other m 2022-01-21T08:18:47.21
IV.MTRA.EHE. ML:1.0 0.00006199374000000001 0.2368 AML other m 2022-01-21T08:18:48.35
IV.MTRA.EHN. ML:1.0 0.00006525744999999999 0.2176 AML other m 2022-01-21T08:18:48.87
IV.MC2.EHE. ML:1.1 0.000072932555 0.2432 AML other m 2022-01-21T08:18:49.28
IV.MC2.EHN. ML:1.3 0.000105687935 0.256 AML other m 2022-01-21T08:18:49.64
IV.TERO.HHE. ML:1.1 0.000040476089999999996 0.416 AML other m 2022-01-21T08:18:50.50
IV.TERO.HHN. ML:0.9 0.00003119265 0.5632 AML other m 2022-01-21T08:18:57.56
IV.TERO.HNE. ML:1.4 0.000094138485 0.64 AML other m 2022-01-21T08:18:56.92
IV.TERO.HNN. ML:1.8 0.0001966124 0.9408 AML other m 2022-01-21T08:18:59.66
IV.FDMO.HHE. ML:0.6 0.00001670448 1.0816 AML other m 2022-01-21T08:19:02.38
IV.FDMO.HHN. ML:0.6 0.000014329626500000002 0.3968 AML other m 2022-01-21T08:18:52.01
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