Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 18-07-2020 and time 20:15:36 (Italy) in region 2 km E Castelsantangelo sul Nera (MC)

A magnitude ML 1.2 earthquake occured in region: 2 km E Castelsantangelo sul Nera (MC), on

  • 18-07-2020 18:15:36 (UTC)
  • 18-07-2020 20:15:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8910, 13.1800 at 7 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 2 281 281
Ussita MC 7 444 725
Visso MC 9 1107 1832
Preci PG 12 724 2556
Montemonaco AP 12 604 3160
Bolognola MC 12 142 3302
Norcia PG 13 4957 8259
Montegallo AP 14 523 8782
Montefortino FM 15 1178 9960
Acquacanina MC 16 121 10081
Arquata del Tronto AP 16 1178 11259
Fiastra MC 16 559 11818
Amandola FM 18 3629 15447
Fiordimonte MC 18 202 15649
Monte Cavallo MC 19 145 15794
Sarnano MC 19 3264 19058

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
50 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
63 Km N of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
97 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 1.2 2020-07-18
18:15:36		 42.8912 13.1795 7 2020-07-18
18:51:57		 Sala Sismica INGV-Roma 81140381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-18 18:15:36 ± 0.14
Latitude 42.8912 ± 0.0072
Longitude 13.1795 ± 0.0074
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81140381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 785
Semi-minor axis of confidence ellipse (meter) 534
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 149
Circular confidence region, given by single value of horizontal uncertainty (meter) 780.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.44157
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 81140381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-18 18:51:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-07-18T18:15:53.11 0.1 undecidable manual S 353 49.0176 50 0.17 92
IV.SRES.HHZ. 2020-07-18T18:15:51.70 3.0 undecidable manual P 0.36 0
IV.ASSB.HHZ. 2020-07-18T18:15:51.88 0.1 undecidable manual S 292 45.5211 50 -0.11 94
IV.GUMA.HHZ. 2020-07-18T18:15:45.30 0.1 undecidable manual S 34 22.8549 106 0.6 86
IV.EL6.EHZ. 2020-07-18T18:15:45.48 0.1 undecidable manual P 353 49.0176 50 -0.48 86
IV.MF5.EHZ. 2020-07-18T18:15:45.70 0.1 undecidable manual S 65 25.1526 105 0.24 95
IV.ASSB.HHZ. 2020-07-18T18:15:45.16 0.1 undecidable manual P 292 45.5211 50 -0.26 91
IV.FDMO.HHZ. 2020-07-18T18:15:43.00 0.1 undecidable manual S 335 17.7711 111 -0.03 100
IV.GUMA.HHZ. 2020-07-18T18:15:41.35 0.1 undecidable manual P 34 22.8549 106 0.15 97
IV.MF5.EHZ. 2020-07-18T18:15:41.97 0.1 undecidable manual P 65 25.1526 105 0.32 93
IV.FDMO.HHZ. 2020-07-18T18:15:40.37 0.3 positive manual P 335 17.7711 111 0.13 74
IV.NRCA.HHZ. 2020-07-18T18:15:40.55 0.1 undecidable manual S 220 8.2806 129 0.41 94
IV.MMO1.EHZ. 2020-07-18T18:15:40.69 0.1 undecidable manual S 86 11.9769 119 -0.52 91
IV.MC2.EHZ. 2020-07-18T18:15:38.41 0.1 undecidable manual S 19 2.3976 161 -0.5 93
IV.NRCA.HHZ. 2020-07-18T18:15:38.84 0.1 undecidable manual P 220 8.2806 129 0.27 97
IV.MMO1.EHZ. 2020-07-18T18:15:38.99 0.1 positive manual P 86 11.9769 119 -0.2 98
IV.MC2.EHZ. 2020-07-18T18:15:37.69 0.1 undecidable manual P 19 2.3976 161 -0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.9 0.00007744999999999999 0.7 AML other m 2020-07-18T18:15:45.07
IV.GUMA.HHE. ML:1.7 0.0003195 0.2 AML other m 2020-07-18T18:15:45.51
IV.FDMO.HHN. ML:0.9 0.0000727 0.28 AML other m 2020-07-18T18:15:46.14
IV.GUMA.HHN. ML:1.4 0.0001865 0.34 AML other m 2020-07-18T18:15:48.43
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