Earthquake with magnitude of ML 1.5 on date 23-10-2020 and time 08:08:14 (Italy) in region 4 km E Roccafluvione (AP)

A magnitude ML 1.5 earthquake occured in region: 4 km E Roccafluvione (AP), on

  • 23-10-2020 06:08:14 (UTC)
  • 23-10-2020 08:08:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.85, 13.52 at 20 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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 4 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 13 1354 65180
Acquasanta Terme AP 13 2916 68096
Castignano AP 13 2796 70892
Valle Castellana TE 13 977 71869
Appignano del Tronto AP 13 1785 73654
Maltignano AP 14 2401 76055
Montedinove AP 14 488 76543
Comunanza AP 15 3166 79709
Civitella del Tronto TE 15 5116 84825
Montegallo AP 15 523 85348
Montefalcone Appennino FM 16 424 85772
Castel di Lama AP 16 8634 94406
Montemonaco AP 16 604 95010
Sant'Egidio alla Vibrata TE 17 9811 104821
Montalto delle Marche AP 17 2122 106943
Offida AP 17 5058 112001
Montefortino FM 18 1178 113179
Castorano AP 18 2380 115559
Smerillo FM 18 365 115924
Ancarano TE 18 1857 117781
Rocca Santa Maria TE 18 537 118318
Montelparo FM 19 778 119096
Santa Vittoria in Matenano FM 19 1330 120426
Colli del Tronto AP 19 3668 124094
Amandola FM 20 3629 127723
Campli TE 20 7209 134932

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Teramo (54892 inhabitants)
56 Km N of L'Aquila (69753 inhabitants)
64 Km NW of Montesilvano (53738 inhabitants)
67 Km E of Foligno (57155 inhabitants)
71 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
Bulletin
Rev1000
ML 1.5 2020-10-23
06:08:14
42.85 13.52 20 2021-02-26
14:56:00
Bollettino Sismico Italiano INGV 84151821
Reviewed
Rev100
ML 1.5 2020-10-23
06:08:14
42.85 13.52 21 2020-10-23
06:38:50
Sala Sismica INGV-Roma 84049741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-23 06:08:14 ± 0.14
Latitude 42.85 ± 0.00
Longitude 13.52 ± 0.01
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84151821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 522
Semi-minor axis of confidence ellipse (meter) 249
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.1304
Epicentral distance of station farthest from the epicenter (degree) 0.43078
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 84151821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-22 16:21:21

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 84049741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-23 06:38:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LNSS.HNZ. 2020-10-23T06:08:30.39 0.6 undecidable manual S 235 0.4308 105 0.6 41
IV.FDMO.HHZ. 2020-10-23T06:08:28.03 0.1 undecidable manual S 300 0.3651 108 0.09 94
IV.GIGS.HHZ. 2020-10-23T06:08:28.72 0.6 undecidable manual S 174 0.4011 106 -0.21 46
IV.CSP1.EHE. 2020-10-23T06:08:27.02 0.1 undecidable manual S 316 0.3318 110 0.03 96
IV.NRCA.HHZ. 2020-10-23T06:08:26.38 0.3 undecidable manual S 267 0.2968 113 0.35 68
IV.MC2.EHZ. 2020-10-23T06:08:25.09 0.3 undecidable manual S 284 0.2482 118 0.35 69
IV.SMA1.EHZ. 2020-10-23T06:08:25.34 0.3 undecidable manual S 211 0.259 117 0.33 70
IV.TERO.HHZ. 2020-10-23T06:08:24.53 0.1 undecidable manual S 165 0.2374 119 0.08 98
IV.MNTT.EHZ. 2020-10-23T06:08:24.66 0.6 undecidable manual S 15 0.2167 122 0.73 41
IV.LNSS.HNZ. 2020-10-23T06:08:23.37 0.3 undecidable manual P 235 0.4308 105 0.15 69
IV.GIGS.HHZ. 2020-10-23T06:08:22.29 0.3 undecidable manual P 174 0.4011 106 -0.44 66
IV.MMO1.EHZ. 2020-10-23T06:08:22.04 0.1 undecidable manual S 289 0.1484 135 -0.29 95
IV.OFFI.HHZ. 2020-10-23T06:08:22.80 0.3 undecidable manual S 56 0.1475 135 0.49 69
IV.MTRA.HNZ. 2020-10-23T06:08:21.84 0.1 undecidable manual S 223 0.1304 139 -0.14 97
IV.NRCA.HHZ. 2020-10-23T06:08:21.04 0.1 undecidable manual P 267 0.2968 113 -0.01 98
IV.MF5.EHZ. 2020-10-23T06:08:21.95 0.1 undecidable manual S 342 0.1421 136 -0.25 96
IV.CSP1.EHE. 2020-10-23T06:08:21.35 0.1 undecidable manual P 316 0.3318 110 -0.26 93
IV.FDMO.HHZ. 2020-10-23T06:08:21.96 0.1 undecidable manual P 300 0.3651 108 -0.19 93
IV.SMA1.EHZ. 2020-10-23T06:08:20.50 0.1 undecidable manual P 211 0.259 117 0.03 98
IV.TERO.HHZ. 2020-10-23T06:08:20.05 0.1 undecidable manual P 165 0.2374 119 -0.09 97
IV.MC2.EHZ. 2020-10-23T06:08:20.36 0.1 undecidable manual P 284 0.2482 118 0.05 98
IV.MNTT.EHZ. 2020-10-23T06:08:19.99 0.1 undecidable manual P 15 0.2167 122 0.15 96
IV.MMO1.EHZ. 2020-10-23T06:08:18.71 0.1 undecidable manual P 289 0.1484 135 -0.2 97
IV.OFFI.HHZ. 2020-10-23T06:08:18.95 0.1 undecidable manual P 56 0.1475 135 0.04 100
IV.MTRA.HNZ. 2020-10-23T06:08:18.61 0.1 undecidable manual P 223 0.1304 139 -0.1 99
IV.MF5.EHZ. 2020-10-23T06:08:18.64 0.1 undecidable manual P 342 0.1421 136 -0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.5 0.00019 1.7 AML other m 2020-10-23T06:08:21.07
IV.MTRA.HNN. ML:1.4 0.000160145565 0.0608 AML other m 2020-10-23T06:08:22.10
IV.MTRA.HNE. ML:1.6 0.00024836755 0.08 AML other m 2020-10-23T06:08:22.15
IV.MTRA.EHE. ML:1.7 0.000296 1.52 AML other m 2020-10-23T06:08:22.16
IV.MF5.EHN. ML:1.2 0.00010855 0.3 AML other m 2020-10-23T06:08:22.07
IV.MF5.EHE. ML:1.2 0.00010625 0.3 AML other m 2020-10-23T06:08:22.19
IV.OFFI.HHN. ML:0 0.0002585 0.26 AML other m 2020-10-23T06:08:23.43
IV.OFFI.HHE. ML:0 0.0002265 0.28 AML other m 2020-10-23T06:08:23.41
IV.TERO.HNE. ML:1.6 0.0001750764 0.08 AML other m 2020-10-23T06:08:24.63
IV.TERO.HNN. ML:1.6 0.000174304305 0.0608 AML other m 2020-10-23T06:08:24.71
IV.TERO.HHE. ML:1.6 0.000187 0.16 AML other m 2020-10-23T06:08:24.68
IV.TERO.HHN. ML:1.6 0.000159 0.8 AML other m 2020-10-23T06:08:25.71
IV.SMA1.EHN. ML:1.3 8.45E-5 0.28 AML other m 2020-10-23T06:08:25.58
IV.SMA1.EHE. ML:1.2 6.21E-5 0.62 AML other m 2020-10-23T06:08:25.67
IV.NRCA.HHN. ML:1.8 0.000255 0.14 AML other m 2020-10-23T06:08:26.78
IV.NRCA.HNE. ML:1.8 0.000224 0.08 AML other m 2020-10-23T06:08:26.93
IV.NRCA.HHE. ML:1.8 0.0002665 0.08 AML other m 2020-10-23T06:08:26.93
IV.NRCA.HNN. ML:1.9 0.0002725 1.4 AML other m 2020-10-23T06:08:27.72
IV.FDMO.HHE. ML:1 3.235E-5 0.2 AML other m 2020-10-23T06:08:28.13
IV.FDMO.HHN. ML:1 2.905E-5 1.24 AML other m 2020-10-23T06:08:28.23
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