Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 30-11-2021 and time 20:54:19 (UTC) in region 5 km NW Cittareale (RI)

A magnitude ML 0.6 earthquake occured in region: 5 km NW Cittareale (RI), on

  • 30-11-2021 20:54:19 (UTC)
  • 30-11-2021 21:54:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6550, 13.1160 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
Cittareale RI 6 482 482
Cascia PG 11 3217 3699
Accumoli RI 12 667 4366
Monteleone di Spoleto PG 13 599 4965
Amatrice RI 14 2657 7622
Posta RI 15 694 8316
Norcia PG 16 4957 13273
Borbona RI 16 617 13890
Poggiodomo PG 16 117 14007
Leonessa RI 16 2435 16442
Montereale AQ 18 2581 19023
Arquata del Tronto AP 20 1178 20201

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Terni (111501 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km W of Chieti (51815 inhabitants)
99 Km NE of Roma (2864731 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 0.6 2021-11-30
20:54:19		 42.6553 13.1163 10 2021-11-30
21:00:46		 Sala Sismica INGV-Roma 97988821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-30 20:54:19 ± 0.23
Latitude 42.6553 ± 0.0045
Longitude 13.1163 ± 0.0061
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97988821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 483
Semi-minor axis of confidence ellipse (meter) 271
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.07644
Epicentral distance of station farthest from the epicenter (degree) 0.17807
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 97988821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-30 21:00:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-11-30T20:54:27.14 0.3 undecidable manual S 360 19.7691 117 -0.21 73
IV.RM33.EHZ. 2021-11-30T20:54:26.52 0.3 undecidable manual S 154 18.0708 119 -0.31 71
IV.GAVE.EHZ. 2021-11-30T20:54:26.84 0.3 undecidable manual S 283 18.5703 119 -0.14 74
IV.SMA1.EHZ. 2021-11-30T20:54:26.90 0.3 undecidable manual S 99 18.0708 119 0.07 75
IV.LNSS.HHZ. 2021-11-30T20:54:24.42 0.3 undecidable manual S 227 8.4804 140 0.19 74
IV.SMA1.EHZ. 2021-11-30T20:54:24.04 0.3 negative manual P 99 18.0708 119 0.25 72
IV.NRCA.HHZ. 2021-11-30T20:54:24.14 0.1 positive manual P 360 19.7691 117 0.05 100
IV.GAVE.EHZ. 2021-11-30T20:54:23.99 0.6 undecidable manual P 283 18.5703 119 0.12 49
IV.RM33.EHZ. 2021-11-30T20:54:23.69 0.1 undecidable manual P 154 18.0708 119 -0.1 99
IV.LNSS.HHZ. 2021-11-30T20:54:22.58 1.0 undecidable manual P 227 8.4804 140 0.29 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:0.7 0.00006734267 0.1152 AML other m 2021-11-30T20:54:24.52
IV.LNSS.HHE. ML:0.8 0.000091 0.22 AML other m 2021-11-30T20:54:24.58
IV.LNSS.HNE. ML:0.9 0.00010237804 0.2176 AML other m 2021-11-30T20:54:24.58
IV.LNSS.HNN. ML:0.8 0.00009353096500000001 0.128 AML other m 2021-11-30T20:54:24.59
IV.RM33.EHE. ML:0.4 0.00002028258 0.2816 AML other m 2021-11-30T20:54:26.66
IV.RM33.EHN. ML:0.4 0.00001851179 0.0768 AML other m 2021-11-30T20:54:27.21
IV.RM33.HNN. ML:1.3 0.00017003705000000002 0.9856 AML other m 2021-11-30T20:54:26.55
IV.GAVE.EHE. ML:0.5 0.000026201005 0.2048 AML other m 2021-11-30T20:54:27.08
IV.GAVE.EHN. ML:0.4 0.000020824975000000003 0.1792 AML other m 2021-11-30T20:54:28.08
IV.SMA1.EHE. ML:0.4 0.000020215847000000002 0.1536 AML other m 2021-11-30T20:54:27.35
IV.SMA1.EHN. ML:0.7 0.000041778005 0.256 AML other m 2021-11-30T20:54:27.44
IV.NRCA.HHE. ML:0.7 0.000037931845 0.1024 AML other m 2021-11-30T20:54:27.48
IV.NRCA.HHN. ML:0.5 0.00002336262 0.1536 AML other m 2021-11-30T20:54:28.23
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