Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 06-07-2020 and time 15:34:40 (Italy) in region 4 km E Polino (TR)

A magnitude ML 1.0 earthquake occured in region: 4 km E Polino (TR), on

  • 06-07-2020 13:34:40 (UTC)
  • 06-07-2020 15:34:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6020, 12.8920 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
Polino TR 4 233 233
Leonessa RI 7 2435 2668
Monteleone di Spoleto PG 8 599 3267
Ferentillo TR 9 1913 5180
Morro Reatino RI 10 373 5553
Rivodutri RI 10 1253 6806
Arrone TR 10 2763 9569
Montefranco TR 10 1276 10845
Poggio Bustone RI 11 2055 12900
Labro RI 11 374 13274
Poggiodomo PG 13 117 13391
Scheggino PG 13 461 13852
Colli sul Velino RI 15 533 14385
Cantalice RI 15 2755 17140
Sant'Anatolia di Narco PG 15 564 17704
Cascia PG 17 3217 20921
Vallo di Nera PG 19 364 21285
Posta RI 19 694 21979
Greccio RI 19 1558 23537
Spoleto PG 19 38218 61755

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Terni (111501 inhabitants)
42 Km SE of Foligno (57155 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
67 Km W of Teramo (54892 inhabitants)
68 Km E of Viterbo (67173 inhabitants)
68 Km N of Guidonia Montecelio (88673 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
71 Km N of Tivoli (56533 inhabitants)
86 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 1.0 2020-07-06
13:34:40		 42.6017 12.8917 11 2020-07-06
13:40:10		 Sala Sismica INGV-Roma 80828981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-06 13:34:40 ± 0.06
Latitude 42.6017 ± 0.0045
Longitude 12.8917 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80828981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 499
Semi-minor axis of confidence ellipse (meter) 308
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 197
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.09083
Epicentral distance of station farthest from the epicenter (degree) 0.31117
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 80828981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-06 13:40:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HNZ. 2020-07-06T13:34:52.25 0.3 undecidable manual S 311 34.5432 50 0.06 72
IV.NRCA.HHE. 2020-07-06T13:34:51.10 0.6 undecidable manual S 35 31.4463 50 -0.28 46
IV.RM33.EHZ. 2020-07-06T13:34:50.41 0.3 undecidable manual S 111 28.3494 50 -0.13 72
IV.MOMA.HNZ. 2020-07-06T13:34:47.32 0.1 undecidable manual P 311 34.5432 50 0.08 96
IV.RM33.EHZ. 2020-07-06T13:34:46.22 1.0 undecidable manual P 111 28.3494 50 -0.07 24
IV.LNSS.HHZ. 2020-07-06T13:34:46.31 0.6 undecidable manual S 89 12.1767 132 0.16 49
IV.NRCA.HHE. 2020-07-06T13:34:46.88 0.1 undecidable manual P 35 31.4463 50 0.1 96
IV.ARRO.EHZ. 2020-07-06T13:34:45.48 0.6 undecidable manual S 256 10.5783 136 -0.28 48
IV.GAVE.EHZ. 2020-07-06T13:34:45.46 0.3 undecidable manual S 1 10.0788 137 -0.17 74
IV.GAVE.EHZ. 2020-07-06T13:34:43.56 0.1 positive manual P 1 10.0788 137 0.1 100
IV.ARRO.EHZ. 2020-07-06T13:34:43.61 0.6 positive manual P 256 10.5783 136 0.08 50
IV.LNSS.HHZ. 2020-07-06T13:34:43.82 0.1 undecidable manual P 89 12.1767 132 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1.2 0.00019700000000000002 0.3 AML other m 2020-07-06T13:34:45.79
IV.GAVE.EHE. ML:1.2 0.000169 0.24 AML other m 2020-07-06T13:34:45.68
IV.LNSS.HHN. ML:1.0 0.00011899999999999999 0.1 AML other m 2020-07-06T13:34:46.50
IV.LNSS.HHE. ML:0.9 0.0000895 1.7 AML other m 2020-07-06T13:34:46.97
IV.RM33.EHE. ML:1.0 0.00004425 1.04 AML other m 2020-07-06T13:34:51.04
IV.RM33.EHN. ML:0.7 0.000026000000000000002 1.42 AML other m 2020-07-06T13:34:51.10
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