Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 10-08-2021 and time 06:02:49 (Italy) in region 5 km E Leonessa (RI)

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

  • 10-08-2021 04:02:49 (UTC)
  • 10-08-2021 06:02:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5830, 13.0240 at 13 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
Leonessa RI 5 2435 2435
Posta RI 9 694 3129
Monteleone di Spoleto PG 10 599 3728
Borbona RI 12 617 4345
Cittareale RI 12 482 4827
Poggio Bustone RI 14 2055 6882
Polino TR 15 233 7115
Micigliano RI 15 127 7242
Cascia PG 15 3217 10459
Rivodutri RI 16 1253 11712
Cantalice RI 16 2755 14467
Poggiodomo PG 16 117 14584
Morro Reatino RI 17 373 14957
Antrodoco RI 19 2588 17545
Montereale AQ 19 2581 20126
Labro RI 19 374 20500
Ferentillo TR 20 1913 22413
Borgo Velino RI 20 972 23385

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Terni (111501 inhabitants)
40 Km NW of L'Aquila (69753 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
56 Km W of Teramo (54892 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km N of Tivoli (56533 inhabitants)
77 Km E of Viterbo (67173 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
97 Km W of Chieti (51815 inhabitants)
99 Km W of Pescara (121014 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 2021-08-10
04:02:49		 42.5827 13.0235 13 2021-08-10
04:27:29		 Sala Sismica INGV-Roma 93907661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-10 04:02:49 ± 0.13
Latitude 42.5827 ± 0.0072
Longitude 13.0235 ± 0.0073
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93907661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 750
Semi-minor axis of confidence ellipse (meter) 263
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 203
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25990
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 93907661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-10 04:27:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APEC.HHZ. 2021-08-10T04:03:17.06 3.0 undecidable manual S 0.03 0
IV.NRCA.HHZ. 2021-08-10T04:03:00.06 0.3 undecidable manual S 15 28.8489 97 -0.11 73
IV.SMA1.EHZ. 2021-08-10T04:02:59.39 0.3 undecidable manual S 78 26.0517 99 -0.04 74
IV.ARRO.EHZ. 2021-08-10T04:02:57.51 0.6 undecidable manual S 269 21.0678 103 -0.62 44
IV.RM33.EHZ. 2021-08-10T04:02:57.08 0.6 undecidable manual S 118 17.5713 109 -0.17 49
IV.GAVE.EHZ. 2021-08-10T04:02:56.89 0.6 undecidable manual S 319 16.0728 113 0.02 50
IV.ARRO.EHZ. 2021-08-10T04:02:55.10 0.6 negative manual P 269 21.0678 103 0.41 46
IV.NRCA.HHZ. 2021-08-10T04:02:55.91 0.3 undecidable manual P 15 28.8489 97 0.04 74
IV.TERO.HHZ. 2021-08-10T04:02:55.05 3.0 undecidable manual P -0.15 0
IV.SMA1.EHZ. 2021-08-10T04:02:55.56 0.1 undecidable manual P 78 26.0517 99 0.12 98
IV.RM33.EHZ. 2021-08-10T04:02:54.14 0.1 undecidable manual P 118 17.5713 109 -0.04 100
IV.LNSS.HHZ. 2021-08-10T04:02:54.40 0.6 undecidable manual S 31 2.5974 166 -0.07 52
IV.GAVE.EHZ. 2021-08-10T04:02:53.95 1.0 undecidable manual P 319 16.0728 113 -0.01 25
IV.LNSS.HHZ. 2021-08-10T04:02:52.77 0.1 undecidable manual P 31 2.5974 166 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.0 0.00014315 0.16 AML other m 2021-08-10T04:02:54.52
IV.LNSS.HHN. ML:0.8 0.0000803 1.06 AML other m 2021-08-10T04:02:54.44
IV.ARRO.EHE. ML:0.5 0.0000201 0.78 AML other m 2021-08-10T04:02:58.52
IV.ARRO.EHN. ML:0.5 0.00001925 0.42 AML other m 2021-08-10T04:02:59.21
IV.NRCA.HHE. ML:0.6 0.00002135 0.14 AML other m 2021-08-10T04:03:00.62
IV.NRCA.HHN. ML:0.5 0.0000136 0.64 AML other m 2021-08-10T04:03:01.94
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