Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 01-07-2020 and time 19:34:48 (Italy) in region 4 km E Vallo di Nera (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km E Vallo di Nera (PG), on

  • 01-07-2020 17:34:48 (UTC)
  • 01-07-2020 19:34:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7780, 12.9090 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
Vallo di Nera PG 4 364 364
Cerreto di Spoleto PG 5 1075 1439
Poggiodomo PG 8 117 1556
Sant'Anatolia di Narco PG 8 564 2120
Scheggino PG 10 461 2581
Cascia PG 11 3217 5798
Campello sul Clitunno PG 12 2442 8240
Sellano PG 13 1079 9319
Monteleone di Spoleto PG 14 599 9918
Spoleto PG 15 38218 48136
Norcia PG 15 4957 53093
Preci PG 16 724 53817
Trevi PG 17 8469 62286
Ferentillo TR 20 1913 64199

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SE of Foligno (57155 inhabitants)
32 Km NE of Terni (111501 inhabitants)
56 Km SE of Perugia (166134 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
66 Km W of Teramo (54892 inhabitants)
77 Km NE of Viterbo (67173 inhabitants)
88 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 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 2020-07-01
17:34:48		 42.7778 12.9093 10 2020-07-01
17:49:19		 Sala Sismica INGV-Roma 80682081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-01 17:34:48 ± 0.03
Latitude 42.7778 ± 0.0027
Longitude 12.9093 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80682081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 281
Semi-minor axis of confidence ellipse (meter) 171
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 154
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.16008
Epicentral distance of station farthest from the epicenter (degree) 0.32915
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:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 80682081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-01 17:49:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2020-07-01T17:35:00.71 0.3 undecidable manual S 68 36.5412 50 -0.03 73
IV.ASSB.HHZ. 2020-07-01T17:35:00.42 0.3 undecidable manual S 325 35.742 50 -0.11 72
IV.FDMO.HHZ. 2020-07-01T17:34:59.44 0.3 undecidable manual S 27 32.1456 50 -0.13 72
IV.MC2.EHZ. 2020-07-01T17:34:58.50 0.3 undecidable manual S 57 27.1506 50 0.26 71
IV.MOMA.HHZ. 2020-07-01T17:34:58.49 0.3 undecidable manual S 276 27.75 50 0.09 73
IV.ARRO.EHZ. 2020-07-01T17:34:57.57 0.3 undecidable manual S 208 24.9528 112 -0.04 74
IV.LNSS.HHZ. 2020-07-01T17:34:56.59 0.3 undecidable manual S 151 22.1556 114 -0.13 73
IV.ASSB.HHZ. 2020-07-01T17:34:55.27 0.1 undecidable manual P 325 35.742 50 -0.09 96
IV.MMO1.EHZ. 2020-07-01T17:34:55.34 0.1 undecidable manual P 68 36.5412 50 -0.14 95
IV.NRCA.HNZ. 2020-07-01T17:34:55.34 0.3 undecidable manual S 70 17.7711 119 -0.03 76
IV.MC2.EHZ. 2020-07-01T17:34:54.10 0.1 undecidable manual P 57 27.1506 50 0.07 98
IV.MOMA.HHZ. 2020-07-01T17:34:54.25 0.1 undecidable manual P 276 27.75 50 0.12 97
IV.FDMO.HHZ. 2020-07-01T17:34:54.73 0.1 undecidable manual P 27 32.1456 50 -0.07 97
IV.ARRO.EHZ. 2020-07-01T17:34:53.68 0.1 undecidable manual P 208 24.9528 112 0.01 100
IV.FEMA.HNN. 2020-07-01T17:34:53.48 0.3 undecidable manual P 29 23.4543 113 0.09 74
IV.LNSS.HHZ. 2020-07-01T17:34:53.24 0.1 undecidable manual P 151 22.1556 114 0.08 99
IV.NRCA.HNZ. 2020-07-01T17:34:52.44 0.1 undecidable manual P 70 17.7711 119 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.3 0.0000875 0.16 AML other m 2020-07-01T17:34:59.65
IV.ARRO.EHN. ML:0.8 0.0000399431 0.2048 AML other m 2020-07-01T17:34:58.03
IV.ARRO.EHE. ML:0.9 0.000045013995 0.2176 AML other m 2020-07-01T17:34:58.15
IV.MOMA.HHE. ML:1.1 0.00007113395 0.1664 AML other m 2020-07-01T17:34:58.85
IV.MOMA.HHN. ML:0.7 0.000026780815 0.1408 AML other m 2020-07-01T17:34:58.72
IV.FDMO.HHE. ML:1.2 0.000063415045 0.2304 AML other m 2020-07-01T17:34:59.69
IV.ASSB.HHE. ML:1.0 0.000034982344999999995 0.0768 AML other m 2020-07-01T17:35:01.02
IV.ASSB.HHN. ML:1.1 0.000043366955 0.0768 AML other m 2020-07-01T17:35:00.72
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