Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 05-08-2020 and time 17:22:42 (UTC) in region 5 km SW Castelsantangelo sul Nera (MC)

A magnitude ML 1.4 earthquake occured in region: 5 km SW Castelsantangelo sul Nera (MC), on

  • 05-08-2020 17:22:42 (UTC)
  • 05-08-2020 19:22:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8610, 13.1060 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
Castelsantangelo sul Nera MC 6 281 281
Preci PG 6 724 1005
Norcia PG 8 4957 5962
Visso MC 8 1107 7069
Ussita MC 10 444 7513
Sellano PG 15 1079 8592
Cerreto di Spoleto PG 16 1075 9667
Monte Cavallo MC 17 145 9812
Cascia PG 17 3217 13029
Bolognola MC 18 142 13171
Arquata del Tronto AP 18 1178 14349
Montemonaco AP 19 604 14953
Montegallo AP 19 523 15476
Fiordimonte MC 20 202 15678
Acquacanina MC 20 121 15799
Fiastra MC 20 559 16358

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
65 Km E of Perugia (166134 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
96 Km NE of Viterbo (67173 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 1.4 2020-08-05
17:22:42		 42.8607 13.1063 10 2020-08-05
17:30:18		 Sala Sismica INGV-Roma 81681631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-05 17:22:42 ± 0.07
Latitude 42.8607 ± 0.0045
Longitude 13.1063 ± 0.0049
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 81681631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 475
Semi-minor axis of confidence ellipse (meter) 399
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28778
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 81681631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-05 17:30:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-08-05T17:22:59.45 3.0 undecidable manual S -0.25 0
IV.MF5.EHZ. 2020-08-05T17:22:54.19 0.6 undecidable manual S 64 31.9458 50 0.71 41
IV.CESI.HHZ. 2020-08-05T17:22:51.04 0.1 undecidable manual S 314 22.8549 114 0.02 100
IV.MTRA.EHZ. 2020-08-05T17:22:51.66 0.6 undecidable manual S 116 26.2515 50 -0.3 47
IV.GAVE.EHZ. 2020-08-05T17:22:51.64 0.6 undecidable manual S 223 25.4523 50 -0.09 49
IV.RM33.EHZ. 2020-08-05T17:22:50.16 3.0 undecidable manual P 0.15 0
IV.MMO1.EHZ. 2020-08-05T17:22:49.35 0.3 undecidable manual S 76 18.4704 119 -0.28 72
IV.ASSB.HHZ. 2020-08-05T17:22:49.82 3.0 undecidable manual P -0.53 0
IV.FDMO.HHZ. 2020-08-05T17:22:49.66 0.3 undecidable manual S 355 19.5693 118 -0.32 71
IV.LNSS.HNE. 2020-08-05T17:22:48.42 0.3 undecidable manual P 191 29.1486 50 0.11 73
IV.MF5.EHZ. 2020-08-05T17:22:48.98 0.6 positive manual P 64 31.9458 50 0.22 47
IV.SMA1.EHZ. 2020-08-05T17:22:48.60 3.0 negative manual P -0.03 0
IV.GAVE.EHZ. 2020-08-05T17:22:47.75 0.6 positive manual P 223 25.4523 50 0 50
IV.CSP1.EHZ. 2020-08-05T17:22:47.88 3.0 positive manual P 0 0
IV.MC2.EHZ. 2020-08-05T17:22:47.19 0.6 undecidable manual S 50 8.7801 140 0.19 49
IV.CESI.HHZ. 2020-08-05T17:22:47.25 0.1 undecidable manual P 314 22.8549 114 -0.09 99
IV.MTRA.EHZ. 2020-08-05T17:22:47.62 0.1 undecidable manual P 116 26.2515 50 -0.26 95
IV.MMO1.EHZ. 2020-08-05T17:22:46.46 0.1 positive manual P 76 18.4704 119 -0.08 100
IV.FDMO.HHZ. 2020-08-05T17:22:46.59 0.1 undecidable manual P 355 19.5693 118 -0.15 98
IV.NRCA.HNZ. 2020-08-05T17:22:45.99 0.3 undecidable manual S 168 3.0969 163 -0.05 77
IV.FEMA.HNE. 2020-08-05T17:22:45.72 0.3 undecidable manual P 338 12.1767 130 0.22 73
IV.MC2.EHZ. 2020-08-05T17:22:45.26 0.1 undecidable manual P 50 8.7801 140 0.25 98
IV.NRCA.HNZ. 2020-08-05T17:22:44.67 0.1 negative manual P 168 3.0969 163 0.21 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.8 0.00107236635 0.0768 AML other m 2020-08-05T17:22:46.87
IV.NRCA.HHN. ML:2.0 0.0017243925 0.0896 AML other m 2020-08-05T17:22:46.11
IV.NRCA.HNE. ML:1.7 0.0009484627999999999 0.0768 AML other m 2020-08-05T17:22:46.87
IV.NRCA.HNN. ML:2.0 0.0015792545 0.0896 AML other m 2020-08-05T17:22:46.11
IV.FDMO.HHE. ML:0.9 0.00005793034 0.1792 AML other m 2020-08-05T17:22:51.67
IV.FDMO.HHN. ML:1.0 0.00008153582000000001 0.192 AML other m 2020-08-05T17:22:50.30
IV.CESI.HNE. ML:1.2 0.000115998145 0.2304 AML other m 2020-08-05T17:22:51.07
IV.CESI.HNN. ML:1.7 0.0003203702 0.1408 AML other m 2020-08-05T17:22:51.18
IV.CESI.HHE. ML:1.2 0.000112878535 0.1408 AML other m 2020-08-05T17:22:51.19
IV.CESI.HHN. ML:1.7 0.00035515929999999996 0.1408 AML other m 2020-08-05T17:22:51.18
IV.MTRA.EHE. ML:1.3 0.000104015475 0.1408 AML other m 2020-08-05T17:22:53.50
IV.MTRA.EHN. ML:1.4 0.00014209915000000002 0.32 AML other m 2020-08-05T17:22:52.45
IV.MTRA.HNE. ML:1.4 0.0001230612025 0.2176 AML other m 2020-08-05T17:22:51.85
IV.MTRA.HNN. ML:1.5 0.00016246047499999999 0.3328 AML other m 2020-08-05T17:22:52.45
IV.GAVE.EHE. ML:1.2 0.00010152073 0.2432 AML other m 2020-08-05T17:22:52.67
IV.GAVE.EHN. ML:1.2 0.000088178995 0.128 AML other m 2020-08-05T17:22:51.87
IV.GAVE.HNE. ML:1.3 0.000110931855 0.6016 AML other m 2020-08-05T17:22:48.80
IV.GAVE.HNN. ML:1.4 0.00016044675 0.704 AML other m 2020-08-05T17:22:49.19
IV.CSP1.EHE. ML:1.0 0.000049394145 0.1792 AML other m 2020-08-05T17:22:52.47
IV.CSP1.EHN. ML:0.8 0.0000335714 0.1536 AML other m 2020-08-05T17:22:52.86
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