Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-10-2020 and time 10:03:33 (UTC) in region 3 km W Ascoli Piceno (AP)

A magnitude ML 1.7 earthquake occured in region: 3 km W Ascoli Piceno (AP), on

  • 17-10-2020 10:03:33 (UTC)
  • 17-10-2020 12:03:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8560, 13.5430 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.

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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
Ascoli Piceno AP 3 49407 49407
Venarotta AP 5 2066 51473
Roccafluvione AP 6 2010 53483
Folignano AP 8 9241 62724
Palmiano AP 8 196 62920
Rotella AP 11 906 63826
Appignano del Tronto AP 11 1785 65611
Castignano AP 11 2796 68407
Maltignano AP 12 2401 70808
Force AP 13 1354 72162
Montedinove AP 13 488 72650
Civitella del Tronto TE 14 5116 77766
Valle Castellana TE 14 977 78743
Castel di Lama AP 14 8634 87377
Acquasanta Terme AP 14 2916 90293
Sant'Egidio alla Vibrata TE 15 9811 100104
Offida AP 15 5058 105162
Comunanza AP 15 3166 108328
Montalto delle Marche AP 16 2122 110450
Castorano AP 16 2380 112830
Montefalcone Appennino FM 16 424 113254
Ancarano TE 16 1857 115111
Colli del Tronto AP 17 3668 118779
Montegallo AP 17 523 119302
Montelparo FM 18 778 120080
Montemonaco AP 18 604 120684
Smerillo FM 18 365 121049
Cossignano AP 19 978 122027
Campli TE 19 7209 129236
Santa Vittoria in Matenano FM 19 1330 130566
Rocca Santa Maria TE 19 537 131103
Montefortino FM 19 1178 132281
Spinetoli AP 19 7215 139496
Torano Nuovo TE 20 1611 141107
Monte Rinaldo FM 20 379 141486

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Teramo (54892 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
63 Km NW of Montesilvano (53738 inhabitants)
69 Km E of Foligno (57155 inhabitants)
70 Km NW of Pescara (121014 inhabitants)
76 Km NW of Chieti (51815 inhabitants)
80 Km E of Terni (111501 inhabitants)
85 Km S of Ancona (100861 inhabitants)
98 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 1.7 2020-10-17
10:03:33		 42.8563 13.5427 20 2021-02-26
14:56:02		 Bollettino Sismico Italiano INGV 84268051
Reviewed
Rev100 		ML 1.7 2020-10-17
10:03:33		 42.8582 13.5337 21 2020-10-17
10:11:52		 Sala Sismica INGV-Roma 83845031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-17 10:03:33 ± 0.12
Latitude 42.8563 ± 0.0036
Longitude 13.5427 ± 0.0074
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 84268051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 627
Semi-minor axis of confidence ellipse (meter) 116
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.80220
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 84268051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-30 14:21:49

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 83845031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-17 10:11:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.CANO.HHZ. 2020-10-17T10:05:23.16 3.0 undecidable manual Sn 1.66 0
IV.RAVA.EHZ. 2020-10-17T10:04:54.46 3.0 undecidable manual Sg 10.04 0
IV.MONC.HHZ. 2020-10-17T10:04:49.32 3.0 positive manual Pn 8.11 0
IV.ACER.HHZ. 2020-10-17T10:04:48.02 3.0 undecidable manual Sn -0.25 0
IV.CELB.HHZ. 2020-10-17T10:04:48.53 3.0 undecidable manual Sn 6.72 0
IV.EUCT.HNZ. 2020-10-17T10:04:47.49 3.0 undecidable manual Pg 15.54 0
IV.NOCI.HHZ. 2020-10-17T10:04:37.70 3.0 positive manual Pg 14.13 0
IV.BRSN.HNZ. 2020-10-17T10:04:26.40 3.0 undecidable manual Sn 1.73 0
IV.MNTV.HNZ. 2020-10-17T10:04:24.91 3.0 undecidable manual Pn 5.65 0
IV.CTI.HHZ. 2020-10-17T10:04:23.91 3.0 undecidable manual Pn -1.18 0
IV.LRP.EHZ. 2020-10-17T10:04:11.72 3.0 undecidable manual S 0.35 0
IV.MIDA.HHZ. 2020-10-17T10:04:00.52 3.0 positive manual P 4.51 0
IV.SACS.HNZ. 2020-10-17T10:03:56.41 3.0 undecidable manual P 1.97 0
IV.EL6.EHZ. 2020-10-17T10:03:53.82 0.6 undecidable manual S 326 63.492 100 0.39 43
IV.GAVE.EHZ. 2020-10-17T10:03:52.06 0.6 undecidable manual S 251 55.7997 101 0.63 41
IV.LNSS.HHZ. 2020-10-17T10:03:50.36 0.6 undecidable manual S 236 49.617 103 0.55 43
IV.RM33.EHZ. 2020-10-17T10:03:49.65 0.6 undecidable manual S 215 46.9197 104 0.55 43
IV.SSFR.HNZ. 2020-10-17T10:03:49.49 0.1 undecidable manual P 317 89.0442 97 0.44 82
IV.FDMO.HHZ. 2020-10-17T10:03:47.49 0.3 undecidable manual S 299 42.0246 106 -0.36 69
IV.TRTR.HHZ. 2020-10-17T10:03:47.62 3.0 undecidable manual P 0
IV.CSP1.EHZ. 2020-10-17T10:03:46.51 0.3 undecidable manual S 314 37.8288 109 -0.27 71
IV.T0110.HHZ. 2020-10-17T10:03:46.40 0.1 negative manual P 165 72.0723 98 -0.06 91
IV.SMA1.EHZ. 2020-10-17T10:03:45.01 0.6 undecidable manual S 214 30.2475 114 0.13 49
IV.NRCA.HHZ. 2020-10-17T10:03:45.97 0.6 undecidable manual S 266 34.9428 110 -0.08 49
IV.T1299.HNN. 2020-10-17T10:03:45.75 0.1 undecidable manual S 221 32.5452 112 0.31 94
IV.MC2.EHZ. 2020-10-17T10:03:44.82 0.6 undecidable manual S 282 29.3484 115 0.14 48
IV.TERO.HHZ. 2020-10-17T10:03:44.19 0.6 undecidable manual S 169 26.3514 118 0.23 49
IV.EL6.EHZ. 2020-10-17T10:03:44.80 0.1 undecidable manual P 326 63.492 100 -0.34 88
IV.GUMA.HHZ. 2020-10-17T10:03:44.52 0.6 undecidable manual S 324 28.4493 116 0.07 49
IV.SAP2.EHE. 2020-10-17T10:03:44.88 0.3 undecidable manual S 336 29.0487 115 0.27 71
IV.GAVE.EHZ. 2020-10-17T10:03:43.96 0.1 undecidable manual P 251 55.7997 101 -0.03 95
IV.LNSS.HHZ. 2020-10-17T10:03:42.93 0.3 undecidable manual P 236 49.617 103 -0.13 71
IV.RM33.EHZ. 2020-10-17T10:03:42.62 0.1 undecidable manual P 215 46.9197 104 -0.02 96
IV.MTRA.EHZ. 2020-10-17T10:03:41.51 0.6 undecidable manual S 227 16.2726 134 -0.25 49
IV.MF5.EHZ. 2020-10-17T10:03:41.59 0.6 undecidable manual S 335 16.0728 135 -0.15 50
IV.CSP1.EHZ. 2020-10-17T10:03:41.02 0.1 positive manual P 314 37.8288 109 -0.29 93
IV.GIGS.HHN. 2020-10-17T10:03:41.98 0.1 undecidable manual P 177 44.8218 105 -0.35 90
IV.MMO1.EHZ. 2020-10-17T10:03:41.69 0.6 undecidable manual S 285 18.1707 131 -0.46 47
IV.FDMO.HHZ. 2020-10-17T10:03:41.54 0.1 undecidable manual P 299 42.0246 106 -0.38 91
IV.SAP2.EHE. 2020-10-17T10:03:40.86 0.1 undecidable manual P 336 29.0487 115 0.81 80
IV.T1299.HNN. 2020-10-17T10:03:40.60 0.1 positive manual P 221 32.5452 112 0.07 99
IV.MC2.EHZ. 2020-10-17T10:03:40.02 0.1 undecidable manual P 282 29.3484 115 -0.07 99
IV.SMA1.EHZ. 2020-10-17T10:03:40.18 0.1 positive manual P 214 30.2475 114 -0.03 99
IV.NRCA.HHZ. 2020-10-17T10:03:40.69 0.1 positive manual P 266 34.9428 110 -0.19 96
IV.GUMA.HHZ. 2020-10-17T10:03:39.83 0.1 undecidable manual P 324 28.4493 116 -0.13 98
IV.TERO.HHZ. 2020-10-17T10:03:39.68 0.1 positive manual P 169 26.3514 118 0 100
IV.MNTT.EHE. 2020-10-17T10:03:39.59 0.3 undecidable manual P 11 23.2545 122 0.33 72
IV.MMO1.EHZ. 2020-10-17T10:03:38.33 0.1 undecidable manual P 285 18.1707 131 -0.31 96
IV.OFFI.HHZ. 2020-10-17T10:03:38.59 0.1 negative manual P 53 14.5743 138 0.36 96
IV.MTRA.EHZ. 2020-10-17T10:03:38.25 0.1 positive manual P 227 16.2726 134 -0.16 99
IV.MF5.EHZ. 2020-10-17T10:03:38.26 0.1 negative manual P 335 16.0728 135 -0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.7 0.000293 0.46 AML other m 2020-10-17T10:03:41.78
IV.MTRA.EHE. ML:2.1 0.000875 0.48 AML other m 2020-10-17T10:03:41.81
IV.MF5.EHN. ML:1.8 0.00042249999999999997 0.3 AML other m 2020-10-17T10:03:41.70
IV.TERO.HHE. ML:1.5 0.0001515 0.64 AML other m 2020-10-17T10:03:44.32
IV.GUMA.HHE. ML:1.7 0.0002295 0.48 AML other m 2020-10-17T10:03:44.65
IV.GUMA.HHN. ML:1.7 0.00022350000000000004 0.46 AML other m 2020-10-17T10:03:44.70
IV.TERO.HHN. ML:1.4 0.000127 1.3 AML other m 2020-10-17T10:03:45.65
IV.SMA1.EHN. ML:1.8 0.0002455 0.28 AML other m 2020-10-17T10:03:45.23
IV.SMA1.EHE. ML:1.6 0.0001795 0.6 AML other m 2020-10-17T10:03:45.33
IV.MF5.EHE. ML:1.5 0.00018449999999999999 0.34 AML other m 2020-10-17T10:03:45.90
IV.NRCA.HHE. ML:2.1 0.00047 0.44 AML other m 2020-10-17T10:03:46.56
IV.NRCA.HHN. ML:2.1 0.00047000000000000004 0.12 AML other m 2020-10-17T10:03:46.41
IV.CSP1.EHN. ML:1.9 0.0002655 0.3 AML other m 2020-10-17T10:03:46.80
IV.CSP1.EHE. ML:1.8 0.00020950000000000002 1.58 AML other m 2020-10-17T10:03:47.05
IV.FDMO.HHE. ML:1.2 0.000050799999999999995 0.12 AML other m 2020-10-17T10:03:48.02
IV.FDMO.HHN. ML:1.3 0.000058250000000000006 1.66 AML other m 2020-10-17T10:03:48.85
IV.RM33.EHN. ML:1.6 0.00009825 0.28 AML other m 2020-10-17T10:03:49.84
IV.LNSS.HHN. ML:1.6 0.0001065 0.28 AML other m 2020-10-17T10:03:50.57
IV.RM33.EHE. ML:1.6 0.00009675000000000001 1.24 AML other m 2020-10-17T10:03:50.11
IV.LNSS.HHE. ML:1.6 0.00009625000000000001 0.18 AML other m 2020-10-17T10:03:51.78
IV.GAVE.EHE. ML:1.6 0.0000878 0.18 AML other m 2020-10-17T10:03:53.04
IV.GAVE.EHN. ML:1.6 0.0000814 0.2 AML other m 2020-10-17T10:03:53.13
IV.EL6.EHN. ML:1.5 0.0000543 0.7 AML other m 2020-10-17T10:03:54.97
IV.EL6.EHE. ML:1.4 0.00005073 0.5 AML other m 2020-10-17T10:04:04.51
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