Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 24-10-2020 and time 08:24:32 (Italy) in region 4 km W Ascoli Piceno (AP)

A magnitude ML 0.9 earthquake occured in region: 4 km W Ascoli Piceno (AP), on

  • 24-10-2020 06:24:32 (UTC)
  • 24-10-2020 08:24:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8660, 13.5380 at 21 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 4 49407 49407
Venarotta AP 4 2066 51473
Roccafluvione AP 5 2010 53483
Palmiano AP 7 196 53679
Folignano AP 9 9241 62920
Rotella AP 10 906 63826
Castignano AP 11 2796 66622
Appignano del Tronto AP 11 1785 68407
Force AP 12 1354 69761
Montedinove AP 13 488 70249
Maltignano AP 13 2401 72650
Comunanza AP 14 3166 75816
Castel di Lama AP 14 8634 84450
Civitella del Tronto TE 15 5116 89566
Valle Castellana TE 15 977 90543
Montalto delle Marche AP 15 2122 92665
Acquasanta Terme AP 15 2916 95581
Offida AP 15 5058 100639
Montefalcone Appennino FM 15 424 101063
Sant'Egidio alla Vibrata TE 15 9811 110874
Castorano AP 16 2380 113254
Montegallo AP 17 523 113777
Ancarano TE 17 1857 115634
Montelparo FM 17 778 116412
Smerillo FM 17 365 116777
Colli del Tronto AP 17 3668 120445
Montemonaco AP 18 604 121049
Santa Vittoria in Matenano FM 18 1330 122379
Montefortino FM 18 1178 123557
Cossignano AP 18 978 124535
Monte Rinaldo FM 19 379 124914
Ortezzano FM 19 774 125688
Spinetoli AP 20 7215 132903
Campli TE 20 7209 140112
Amandola FM 20 3629 143741
Rocca Santa Maria TE 20 537 144278

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Teramo (54892 inhabitants)
58 Km N of L'Aquila (69753 inhabitants)
64 Km NW of Montesilvano (53738 inhabitants)
69 Km E of Foligno (57155 inhabitants)
71 Km NW of Pescara (121014 inhabitants)
77 Km NW of Chieti (51815 inhabitants)
80 Km E of Terni (111501 inhabitants)
84 Km S of Ancona (100861 inhabitants)
97 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 0.9 2020-10-24
06:24:32		 42.8658 13.5377 21 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87210431
Reviewed
Rev100 		ML 0.9 2020-10-24
06:24:31		 42.8642 13.5628 24 2020-10-24
06:33:08		 Sala Sismica INGV-Roma 84080581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-24 06:24:32 ± 0.17
Latitude 42.8658 ± 0.0036
Longitude 13.5377 ± 0.0074
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87210431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 618
Semi-minor axis of confidence ellipse (meter) 151
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 79
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
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 30
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42808
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 87210431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-16 14:31:09

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 84080581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-24 06:33:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CR.STON.BHZ. 2020-10-24T06:26:00.68 3.0 undecidable manual Sn -2.28 0
IV.CAPR.HNZ. 2020-10-24T06:25:54.39 3.0 undecidable manual Sn -1.77 0
IV.VULT.HHZ. 2020-10-24T06:25:44.87 3.0 undecidable manual Sn 1.86 0
CR.STON.BHZ. 2020-10-24T06:25:24.28 3.0 positive manual Pn 3.97 0
IV.FREG.EHZ. 2020-10-24T06:25:16.64 3.0 negative manual Pg 3.34 0
IV.NDIM.HNZ. 2020-10-24T06:25:05.65 3.0 positive manual Pg 2.93 0
IV.RMP.HHZ. 2020-10-24T06:24:56.54 3.0 undecidable manual Sg -0.56 0
IV.RM33.HNE. 2020-10-24T06:24:48.45 0.6 undecidable manual S 214 47.5191 105 0.61 43
IV.FDMO.HHZ. 2020-10-24T06:24:46.34 0.6 undecidable manual S 298 41.1255 108 0.13 49
IV.CSP1.EHZ. 2020-10-24T06:24:45.31 0.6 undecidable manual S 313 36.8298 111 0.19 49
IV.NRCA.HNE. 2020-10-24T06:24:44.68 0.6 undecidable manual S 264 34.6431 113 0.11 50
IV.T1299.HNN. 2020-10-24T06:24:44.42 0.3 undecidable manual S 219 33.0447 114 0.23 74
IV.SMA1.EHZ. 2020-10-24T06:24:43.54 0.6 undecidable manual S 212 30.8469 116 -0.12 50
IV.MC2.EHE. 2020-10-24T06:24:43.45 0.6 undecidable manual S 280 28.749 118 0.29 48
IV.TERO.HHZ. 2020-10-24T06:24:42.68 0.6 undecidable manual S 169 27.4503 119 -0.18 49
IV.RM33.HNE. 2020-10-24T06:24:41.21 0.3 undecidable manual P 214 47.5191 105 -0.07 73
IV.FDMO.HHZ. 2020-10-24T06:24:40.16 0.1 undecidable manual P 298 41.1255 108 -0.18 98
IV.MMO1.EHN. 2020-10-24T06:24:40.29 0.3 undecidable manual S 282 17.5713 134 -0.42 73
IV.MF5.EHZ. 2020-10-24T06:24:40.29 0.6 undecidable manual S 335 14.9739 139 0.06 52
IV.NRCA.HNE. 2020-10-24T06:24:39.32 0.3 undecidable manual P 264 34.6431 113 -0.07 76
IV.T1299.HNN. 2020-10-24T06:24:39.28 0.6 undecidable manual P 219 33.0447 114 0.1 50
IV.CSP1.EHZ. 2020-10-24T06:24:39.75 0.3 undecidable manual P 313 36.8298 111 0.04 76
IV.MC2.EHE. 2020-10-24T06:24:38.58 0.3 undecidable manual P 280 28.749 118 0 77
IV.TERO.HHZ. 2020-10-24T06:24:38.24 0.3 undecidable manual P 169 27.4503 119 -0.17 74
IV.SMA1.EHZ. 2020-10-24T06:24:38.76 0.1 positive manual P 212 30.8469 116 -0.11 100
IV.COR1.EHZ. 2020-10-24T06:24:38.42 3.0 negative manual P -2.61 0
IV.OFFI.HHE. 2020-10-24T06:24:37.17 0.1 undecidable manual P 57 14.2746 140 0.35 99
IV.MF5.EHZ. 2020-10-24T06:24:36.87 0.3 undecidable manual P 335 14.9739 139 -0.02 79
IV.MMUR.HNZ. 2020-10-24T06:24:36.09 3.0 undecidable manual P -2.47 0
IV.MMO1.EHN. 2020-10-24T06:24:36.85 0.3 undecidable manual P 282 17.5713 134 -0.32 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MF5.EHN. ML:0.9 0.000042541092 1.2416 AML other m 2020-10-24T06:24:14.04
IV.TERO.HHE. ML:1.0 0.00004036434 0.0768 AML other m 2020-10-24T06:24:42.80
IV.TERO.HHN. ML:0.8 0.000030448650000000002 0.0768 AML other m 2020-10-24T06:24:42.80
IV.SMA1.EHE. ML:0.6 0.000016464653 0.1216 AML other m 2020-10-24T06:24:43.87
IV.SMA1.EHN. ML:0.8 0.000024245865 1.92 AML other m 2020-10-24T06:24:44.97
IV.CSP1.EHN. ML:1.0 0.000035249669999999993 0.1408 AML other m 2020-10-24T06:24:45.53
IV.CSP1.EHE. ML:1.1 0.000039569165000000005 0.2016 AML other m 2020-10-24T06:24:46.11
IV.FDMO.HHE. ML:0.5 0.0000115782965 0.2016 AML other m 2020-10-24T06:24:46.39
IV.FDMO.HHN. ML:0.5 0.000011712696 0.1216 AML other m 2020-10-24T06:24:46.56
IV.MF5.EHE. ML:0.8 0.000034857510000000004 0.96 AML other m 2020-10-24T06:24:47.91
IV.TERO.HNE. ML:1.4 0.00011791355 0.6912 AML other m 2020-10-24T06:24:53.42
IV.TERO.HNN. ML:1.6 0.00016321085000000002 1.0016 AML other m 2020-10-24T06:24:57.08
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