Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 01-07-2021 and time 05:20:28 (UTC) in region 5 km E Ferentillo (TR)

A magnitude ML 1.1 earthquake occured in region: 5 km E Ferentillo (TR), on

  • 01-07-2021 05:20:28 (UTC)
  • 01-07-2021 07:20:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6270, 12.8470 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
Ferentillo TR 5 1913 1913
Polino TR 5 233 2146
Montefranco TR 7 1276 3422
Arrone TR 8 2763 6185
Monteleone di Spoleto PG 9 599 6784
Scheggino PG 10 461 7245
Morro Reatino RI 11 373 7618
Labro RI 12 374 7992
Sant'Anatolia di Narco PG 12 564 8556
Poggiodomo PG 12 117 8673
Leonessa RI 12 2435 11108
Rivodutri RI 12 1253 12361
Poggio Bustone RI 14 2055 14416
Spoleto PG 15 38218 52634
Colli sul Velino RI 15 533 53167
Vallo di Nera PG 16 364 53531
Cascia PG 17 3217 56748
Terni TR 18 111501 168249
Cantalice RI 18 2755 171004

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Terni (111501 inhabitants)
38 Km SE of Foligno (57155 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
65 Km E of Viterbo (67173 inhabitants)
65 Km SE of Perugia (166134 inhabitants)
70 Km W of Teramo (54892 inhabitants)
70 Km N of Guidonia Montecelio (88673 inhabitants)
74 Km N of Tivoli (56533 inhabitants)
87 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 1.1 2021-07-01
05:20:28		 42.6273 12.8467 13 2021-07-01
05:27:46		 Sala Sismica INGV-Roma 92092271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-01 05:20:28 ± 0.11
Latitude 42.6273 ± 0.0081
Longitude 12.8467 ± 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 92092271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 880
Semi-minor axis of confidence ellipse (meter) 64
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 189
Circular confidence region, given by single value of horizontal uncertainty (meter) 880.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.07374
Epicentral distance of station farthest from the epicenter (degree) 0.67719
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 92092271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-01 05:27:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2021-07-01T05:20:42.13 0.1 undecidable manual P 340 75.1692 92 0.45 82
IV.ATCC.EHZ. 2021-07-01T05:20:40.69 0.1 undecidable manual P 345 64.0914 93 0.72 77
IV.NRCA.HHZ. 2021-07-01T05:20:39.31 0.1 undecidable manual S 44 31.6461 97 -0.29 88
IV.RM33.EHZ. 2021-07-01T05:20:39.86 0.1 undecidable manual S 113 32.8449 97 -0.06 93
IV.MOMA.HHZ. 2021-07-01T05:20:38.80 0.1 undecidable manual S 311 29.8479 98 -0.33 89
IV.CESX.HHZ. 2021-07-01T05:20:36.29 0.1 undecidable manual S 264 21.2676 104 -0.6 85
IV.LNSS.HHZ. 2021-07-01T05:20:35.83 0.1 undecidable manual S 100 16.0728 114 0.27 96
IV.RM33.EHZ. 2021-07-01T05:20:35.08 0.1 undecidable manual P 113 32.8449 97 -0.08 93
IV.MOMA.HHZ. 2021-07-01T05:20:35.14 0.1 undecidable manual P 311 29.8479 98 0.43 89
IV.NRCA.HHZ. 2021-07-01T05:20:34.71 0.1 undecidable manual P 44 31.6461 97 -0.27 89
IV.ARRO.EHZ. 2021-07-01T05:20:34.02 0.1 undecidable manual S 231 8.4804 139 0.09 98
IV.GAVE.EHZ. 2021-07-01T05:20:33.82 0.1 undecidable manual S 28 8.1807 140 -0.05 97
IV.CESX.HHZ. 2021-07-01T05:20:33.19 0.1 undecidable manual P 264 21.2676 104 -0.23 93
IV.LNSS.HHZ. 2021-07-01T05:20:32.67 0.1 undecidable manual P 100 16.0728 114 0.02 97
IV.GAVE.EHZ. 2021-07-01T05:20:31.70 0.1 undecidable manual P 28 8.1807 140 0.03 99
IV.ARRO.EHZ. 2021-07-01T05:20:31.72 0.1 undecidable manual P 231 8.4804 139 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.4 0.00031 1.6 AML other m 2021-07-01T05:20:34.98
IV.GAVE.EHN. ML:1.2 0.000177 1.12 AML other m 2021-07-01T05:20:34.62
IV.LNSS.HHN. ML:1.1 0.00009495 0.82 AML other m 2021-07-01T05:20:35.41
IV.LNSS.HHE. ML:1.0 0.0000854 1.24 AML other m 2021-07-01T05:20:36.12
IV.NRCA.HHE. ML:1.3 0.0000935 0.16 AML other m 2021-07-01T05:20:39.77
IV.MOMA.HHN. ML:0.9 0.000041 0.56 AML other m 2021-07-01T05:20:39.60
IV.NRCA.HHN. ML:1.1 0.0000521 0.14 AML other m 2021-07-01T05:20:40.54
IV.MOMA.HHE. ML:0.9 0.000037749999999999996 0.56 AML other m 2021-07-01T05:20:40.58
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