Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 27-10-2020 and time 00:06:43 (Italy) in region 3 km E Roccafluvione (AP)

A magnitude ML 1.3 earthquake occured in region: 3 km E Roccafluvione (AP), on

  • 26-10-2020 23:06:43 (UTC)
  • 27-10-2020 00:06:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8560, 13.5170 at 20 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
Roccafluvione AP 3 2010 2010
Venarotta AP 4 2066 4076
Ascoli Piceno AP 5 49407 53483
Palmiano AP 7 196 53679
Folignano AP 10 9241 62920
Rotella AP 12 906 63826
Force AP 12 1354 65180
Castignano AP 13 2796 67976
Acquasanta Terme AP 13 2916 70892
Appignano del Tronto AP 13 1785 72677
Valle Castellana TE 13 977 73654
Comunanza AP 14 3166 76820
Montedinove AP 14 488 77308
Maltignano AP 14 2401 79709
Montegallo AP 15 523 80232
Civitella del Tronto TE 15 5116 85348
Montefalcone Appennino FM 15 424 85772
Castel di Lama AP 16 8634 94406
Montemonaco AP 16 604 95010
Montalto delle Marche AP 16 2122 97132
Sant'Egidio alla Vibrata TE 17 9811 106943
Offida AP 17 5058 112001
Montefortino FM 17 1178 113179
Smerillo FM 18 365 113544
Castorano AP 18 2380 115924
Montelparo FM 18 778 116702
Santa Vittoria in Matenano FM 18 1330 118032
Ancarano TE 19 1857 119889
Rocca Santa Maria TE 19 537 120426
Amandola FM 19 3629 124055
Colli del Tronto AP 19 3668 127723
Campli TE 20 7209 134932
Monte Rinaldo FM 20 379 135311

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Teramo (54892 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
64 Km NW of Montesilvano (53738 inhabitants)
67 Km E of Foligno (57155 inhabitants)
72 Km NW of Pescara (121014 inhabitants)
77 Km NW of Chieti (51815 inhabitants)
78 Km E of Terni (111501 inhabitants)
85 Km S of Ancona (100861 inhabitants)
96 Km E of Perugia (166134 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 1.3 2020-10-26
23:06:43		 42.8562 13.5172 21 2020-10-26
23:37:21		 Sala Sismica INGV-Roma 84167141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-26 23:06:43 ± 0.12
Latitude 42.8562 ± 0.0027
Longitude 13.5172 ± 0.0074
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84167141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 458
Semi-minor axis of confidence ellipse (meter) 377
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.13310
Epicentral distance of station farthest from the epicenter (degree) 0.41189
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 84167141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-26 23:37:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.EHZ. 2020-10-26T23:06:58.91 1.0 undecidable manual S 213 45.7209 106 0.12 23
IV.FDMO.HHZ. 2020-10-26T23:06:57.56 0.3 undecidable manual S 300 40.2264 108 0.17 69
IV.CSP1.EHZ. 2020-10-26T23:06:56.41 0.3 undecidable manual S 316 36.4413 111 -0.02 73
IV.T1299.HNN. 2020-10-26T23:06:55.44 0.6 undecidable manual S 218 31.1466 115 0.3 46
IV.SMA1.EHE. 2020-10-26T23:06:54.92 0.6 undecidable manual S 211 29.0487 117 0.29 46
IV.TERO.HHZ. 2020-10-26T23:06:54.00 0.3 undecidable manual S 165 26.8509 119 -0.1 72
IV.MNTT.EHZ. 2020-10-26T23:06:53.76 0.6 undecidable manual S 16 23.754 123 0.37 46
IV.OFFI.HHZ. 2020-10-26T23:06:52.19 0.6 undecidable manual S 57 16.2726 136 0.34 47
IV.RM33.EHZ. 2020-10-26T23:06:52.56 0.1 undecidable manual P 213 45.7209 106 0.12 93
IV.MF5.EHZ. 2020-10-26T23:06:51.47 0.3 undecidable manual S 342 15.3735 138 -0.21 73
IV.FDMO.HHZ. 2020-10-26T23:06:51.52 0.1 undecidable manual P 300 40.2264 108 -0.11 94
IV.MTRA.HNN. 2020-10-26T23:06:51.37 0.3 undecidable manual S 222 14.7741 139 -0.21 73
IV.CSP1.EHZ. 2020-10-26T23:06:50.91 0.1 positive manual P 316 36.4413 111 -0.17 94
IV.T1299.HNN. 2020-10-26T23:06:50.49 0.1 undecidable manual P 218 31.1466 115 0.16 95
IV.SMA1.EHE. 2020-10-26T23:06:50.06 0.1 undecidable manual P 211 29.0487 117 0.02 98
IV.TERO.HHZ. 2020-10-26T23:06:49.56 0.1 undecidable manual P 165 26.8509 119 -0.17 95
IV.MNTT.EHZ. 2020-10-26T23:06:49.44 0.1 undecidable manual P 16 23.754 123 0.11 97
IV.MTRA.HNN. 2020-10-26T23:06:48.16 0.1 undecidable manual P 222 14.7741 139 -0.12 98
IV.MF5.EHZ. 2020-10-26T23:06:48.18 0.1 undecidable manual P 342 15.3735 138 -0.16 98
IV.OFFI.HHZ. 2020-10-26T23:06:48.46 0.1 undecidable manual P 57 16.2726 136 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHE. ML:1.3 0.00008599999999999999 1.16 AML other m 2020-10-26T23:06:54.24
IV.TERO.HHN. ML:1.4 0.00009784999999999999 1.2 AML other m 2020-10-26T23:06:54.27
IV.MF5.EHN. ML:1.3 0.000113436915 1.344 AML other m 2020-10-26T23:06:50.70
IV.OFFI.HHE. ML:1.4 0.000144655525 0.8192 AML other m 2020-10-26T23:06:51.46
IV.OFFI.HHN. ML:1.4 0.0001584363 1.4976 AML other m 2020-10-26T23:07:00.68
IV.MNTT.EHE. ML:1.5 0.00014259102100000002 0.32 AML other m 2020-10-26T23:06:58.35
IV.MNTT.EHN. ML:1.5 0.00014185144999999999 0.448 AML other m 2020-10-26T23:06:56.63
IV.TERO.HNE. ML:1.4 0.000106643825 0.5248 AML other m 2020-10-26T23:07:00.60
IV.CSP1.EHN. ML:1.2 0.00005549472145 1.664 AML other m 2020-10-26T23:06:50.12
IV.FDMO.HHE. ML:0.5 0.000011823865500000001 0.7808 AML other m 2020-10-26T23:06:54.01
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