Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 21-10-2020 and time 16:52:58 (Italy) in region 4 km W Ascoli Piceno (AP)

A magnitude ML 2.3 earthquake occured in region: 4 km W Ascoli Piceno (AP), on

  • 21-10-2020 14:52:58 (UTC)
  • 21-10-2020 16:52:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8530, 13.5290 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 8 196 53679
Folignano AP 9 9241 62920
Rotella AP 12 906 63826
Castignano AP 12 2796 66622
Appignano del Tronto AP 12 1785 68407
Force AP 13 1354 69761
Maltignano AP 13 2401 72162
Valle Castellana TE 13 977 73139
Acquasanta Terme AP 13 2916 76055
Montedinove AP 14 488 76543
Civitella del Tronto TE 14 5116 81659
Comunanza AP 15 3166 84825
Castel di Lama AP 15 8634 93459
Sant'Egidio alla Vibrata TE 16 9811 103270
Montegallo AP 16 523 103793
Montefalcone Appennino FM 16 424 104217
Offida AP 16 5058 109275
Montalto delle Marche AP 16 2122 111397
Castorano AP 17 2380 113777
Montemonaco AP 17 604 114381
Ancarano TE 18 1857 116238
Colli del Tronto AP 18 3668 119906
Montefortino FM 18 1178 121084
Smerillo FM 18 365 121449
Rocca Santa Maria TE 18 537 121986
Montelparo FM 19 778 122764
Santa Vittoria in Matenano FM 19 1330 124094
Campli TE 19 7209 131303
Cossignano AP 20 978 132281

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)
68 Km E of Foligno (57155 inhabitants)
71 Km NW of Pescara (121014 inhabitants)
76 Km NW of Chieti (51815 inhabitants)
79 Km E of Terni (111501 inhabitants)
85 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 2.3 2020-10-21
14:52:58		 42.8527 13.5292 21 2021-02-26
14:56:18		 Bollettino Sismico Italiano INGV 86959481
Reviewed
Rev100 		ML 2.3 2020-10-21
14:52:58		 42.8517 13.5195 20 2020-10-21
15:00:28		 Sala Sismica INGV-Roma 83992741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-21 14:52:58 ± 0.07
Latitude 42.8527 ± 0.0027
Longitude 13.5292 ± 0.0049
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 86959481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 400
Semi-minor axis of confidence ellipse (meter) 35
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 76
Number of defining phases 76
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.13670
Epicentral distance of station farthest from the epicenter (degree) 1.82023
Number of stations at which the event was observed 48
Number of stations from which data was used for origin computation 48
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 83992741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-21 15:00:28

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 61
Type of magnitude ML
Reference to an origin 86959481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-09 06:29:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2020-10-21T14:53:29.15 0.6 undecidable manual P 274 202.0422 54 -0.65 25
IV.T0110.HHZ. 2020-10-21T14:53:21.51 0.6 undecidable manual S 164 71.9724 99 0.68 38
IV.ASSB.HHZ. 2020-10-21T14:53:21.93 0.3 undecidable manual S 287 73.7706 99 0.64 58
IV.SNTG.HHZ. 2020-10-21T14:53:19.24 0.3 undecidable manual S 313 65.3901 101 0.17 66
IV.MGAB.HHZ. 2020-10-21T14:53:18.38 1.0 undecidable manual P 274 115.3956 95 0.18 20
IV.EL6.EHZ. 2020-10-21T14:53:18.93 0.3 undecidable manual S 327 63.1923 101 0.41 63
IV.GAVE.EHZ. 2020-10-21T14:53:17.03 0.3 undecidable manual S 251 54.7008 103 0.74 58
IV.VCEL.EHZ. 2020-10-21T14:53:17.50 0.6 undecidable manual S 153 56.7987 103 0.66 39
IV.ATPI.EHZ. 2020-10-21T14:53:17.93 0.6 undecidable manual P 306 112.7982 96 0.12 41
IV.MPAG.EHZ. 2020-10-21T14:53:17.50 0.6 undecidable manual P 324 106.2159 96 0.7 35
IV.CESI.HHZ. 2020-10-21T14:53:16.28 0.3 undecidable manual S 289 53.502 103 0.31 66
IV.MML1.HNZ. 2020-10-21T14:53:16.33 0.3 undecidable manual S 303 53.7018 103 0.29 66
IV.INTR.HHZ. 2020-10-21T14:53:15.07 0.6 undecidable manual P 162 98.2239 97 -0.5 39
IV.LNSS.HHZ. 2020-10-21T14:53:15.30 0.1 undecidable manual S 235 48.5181 105 0.61 83
IV.MURB.HNZ. 2020-10-21T14:53:15.50 0.6 undecidable manual P 300 93.3399 97 0.68 36
IV.FRON.EHZ. 2020-10-21T14:53:15.82 0.6 undecidable manual P 319 98.3238 97 0.23 41
IV.SSFR.HHZ. 2020-10-21T14:53:14.75 0.6 undecidable manual P 317 88.5447 97 0.65 37
IV.RM33.EHZ. 2020-10-21T14:53:14.50 0.3 undecidable manual S 214 45.9207 106 0.47 65
IV.PTQR.HHZ. 2020-10-21T14:53:14.34 0.6 undecidable manual P 187 92.7405 97 -0.4 40
IV.ATSC.EHZ. 2020-10-21T14:53:14.81 1.0 undecidable manual P 313 93.1401 97 0.02 22
IV.ATFO.HHZ. 2020-10-21T14:53:14.95 0.6 undecidable manual P 307 96.2259 97 -0.32 40
IV.FEMA.HNZ. 2020-10-21T14:53:13.08 0.1 undecidable manual S 287 40.8258 109 0.36 89
IV.CESX.HHZ. 2020-10-21T14:53:13.36 0.6 undecidable manual P 251 81.4518 98 0.35 41
IV.ARVD.HHZ. 2020-10-21T14:53:13.84 1.0 undecidable manual P 327 85.9473 98 0.14 21
IV.GIGS.HJZ. 2020-10-21T14:53:13.42 0.1 undecidable manual S 175 44.4222 107 -0.23 91
IV.FDMO.HHZ. 2020-10-21T14:53:12.69 0.6 undecidable manual S 300 41.2254 108 -0.15 46
IV.PF6.EHZ. 2020-10-21T14:53:12.74 0.3 undecidable manual S 319 41.7249 108 -0.21 69
IV.ATCC.EHZ. 2020-10-21T14:53:12.89 0.3 undecidable manual P 297 81.0522 98 -0.05 66
IV.MOMA.HHZ. 2020-10-21T14:53:12.65 0.3 undecidable manual P 266 78.2661 99 0.13 65
IV.AOI.HHZ. 2020-10-21T14:53:12.36 0.6 undecidable manual P 4 77.5668 99 -0.06 44
IV.T0110.HHZ. 2020-10-21T14:53:11.37 0.3 undecidable manual P 164 71.9724 99 -0.2 65
IV.CSP1.EHZ. 2020-10-21T14:53:11.71 0.3 undecidable manual S 315 37.3293 111 -0.15 70
IV.ARRO.EHZ. 2020-10-21T14:53:11.71 0.6 undecidable manual P 244 69.2751 100 0.56 40
IV.NRCA.HNZ. 2020-10-21T14:53:11.08 0.3 undecidable manual S 267 33.8439 113 0.1 72
IV.ASSB.HHZ. 2020-10-21T14:53:11.66 0.3 undecidable manual P 287 73.7706 99 -0.18 65
IV.TRTR.HHZ. 2020-10-21T14:53:11.39 0.6 undecidable manual S 99 31.6461 115 0.93 36
IV.SAP2.EHZ. 2020-10-21T14:53:10.08 0.3 undecidable manual S 339 29.0487 118 0.25 70
IV.SNTG.HHZ. 2020-10-21T14:53:10.31 0.6 undecidable manual P 313 65.3901 101 -0.25 43
IV.CING.HNZ. 2020-10-21T14:53:10.06 0.6 undecidable manual P 335 63.9915 101 -0.3 43
IV.T1299.EHZ. 2020-10-21T14:53:10.77 0.1 undecidable manual S 220 31.5462 115 0.35 91
IV.MNTT.EHZ. 2020-10-21T14:53:09.14 0.3 undecidable manual S 13 23.8539 124 0.51 66
IV.TERO.HNZ. 2020-10-21T14:53:09.02 0.1 undecidable manual S 167 26.2515 121 -0.15 95
IV.SMA1.EHZ. 2020-10-21T14:53:09.98 0.3 undecidable manual S 213 29.2485 117 0.1 72
IV.GAVE.EHZ. 2020-10-21T14:53:09.04 0.1 undecidable manual P 251 54.7008 103 0.09 92
IV.GUMA.HHZ. 2020-10-21T14:53:09.60 0.3 undecidable manual S 326 28.1496 119 -0.01 73
IV.VCEL.EHZ. 2020-10-21T14:53:09.32 0.1 undecidable manual P 153 56.7987 103 0.05 92
IV.MC2.EHZ. 2020-10-21T14:53:09.87 0.3 undecidable manual S 283 28.4493 118 0.19 71
IV.EL6.EHZ. 2020-10-21T14:53:09.95 0.6 undecidable manual P 327 63.1923 101 -0.29 43
IV.CESI.HHZ. 2020-10-21T14:53:08.63 0.1 negative manual P 289 53.502 103 -0.14 91
IV.MML1.HNZ. 2020-10-21T14:53:08.50 0.1 negative manual P 303 53.7018 103 -0.31 88
IV.LNSS.HHZ. 2020-10-21T14:53:08.00 0.1 positive manual P 235 48.5181 105 -0.03 94
IV.CADA.HNZ. 2020-10-21T14:53:07.61 0.3 undecidable manual P 26 42.3243 108 0.5 64
IV.RM33.EHZ. 2020-10-21T14:53:07.58 0.1 positive manual P 214 45.9207 106 -0.07 93
IV.OFFI.HHZ. 2020-10-21T14:53:07.38 0.3 undecidable manual S 54 15.6732 138 0.41 69
IV.MTRA.HNZ. 2020-10-21T14:53:06.49 0.1 undecidable manual S 225 15.1737 139 -0.4 92
IV.TRTR.HHZ. 2020-10-21T14:53:06.15 0.3 undecidable manual P 99 31.6461 115 0.56 64
IV.GIGS.HJZ. 2020-10-21T14:53:06.98 0.1 undecidable manual P 175 44.4222 107 -0.45 87
IV.CAMP.HHZ. 2020-10-21T14:53:06.02 0.1 undecidable manual P 196 36.5412 111 -0.25 92
IV.MF5.EHZ. 2020-10-21T14:53:06.68 0.3 undecidable manual S 339 16.0728 137 -0.36 70
IV.FDMO.HHZ. 2020-10-21T14:53:06.58 0.1 negative manual P 300 41.2254 108 -0.38 88
IV.PF6.EHZ. 2020-10-21T14:53:06.59 0.3 undecidable manual P 319 41.7249 108 -0.43 66
IV.MMO1.EHZ. 2020-10-21T14:53:06.67 0.3 undecidable manual S 288 17.2716 135 -0.6 65
IV.FEMA.HNZ. 2020-10-21T14:53:06.73 0.1 undecidable manual P 287 40.8258 109 -0.16 93
IV.CSP1.EHZ. 2020-10-21T14:53:06.05 0.1 negative manual P 315 37.3293 111 -0.34 90
IV.NRCA.HNZ. 2020-10-21T14:53:05.68 0.1 negative manual P 267 33.8439 113 -0.21 93
IV.SMA1.EHZ. 2020-10-21T14:53:05.14 0.1 positive manual P 213 29.2485 117 -0.11 95
IV.T1299.EHZ. 2020-10-21T14:53:05.58 0.1 positive manual P 220 31.5462 115 0.02 97
IV.GUMA.HHZ. 2020-10-21T14:53:04.87 0.1 positive manual P 326 28.1496 119 -0.23 94
IV.MC2.EHZ. 2020-10-21T14:53:04.98 0.1 negative manual P 283 28.4493 118 -0.16 95
IV.MNTT.EHZ. 2020-10-21T14:53:04.61 0.1 positive manual P 13 23.8539 124 0.08 97
IV.SAP2.EHZ. 2020-10-21T14:53:04.99 0.1 undecidable manual P 339 29.0487 118 -0.23 93
IV.TERO.HNZ. 2020-10-21T14:53:04.64 0.1 positive manual P 167 26.2515 121 -0.2 94
IV.MMO1.EHZ. 2020-10-21T14:53:03.33 0.1 negative manual P 288 17.2716 135 -0.41 91
IV.OFFI.HHZ. 2020-10-21T14:53:03.55 0.1 negative manual P 54 15.6732 138 -0.02 100
IV.MTRA.HNZ. 2020-10-21T14:53:03.23 0.1 positive manual P 225 15.1737 139 -0.29 94
IV.MF5.EHZ. 2020-10-21T14:53:03.27 0.1 positive manual P 339 16.0728 137 -0.34 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:2.5 0.00206 0.5 AML other m 2020-10-21T14:53:06.74
IV.MTRA.HNE. ML:2.8 0.0038099999999999996 0.5 AML other m 2020-10-21T14:53:06.76
IV.MTRA.EHE. ML:2.8 0.0038200000000000005 0.5 AML other m 2020-10-21T14:53:06.77
IV.MTRA.HNN. ML:2.5 0.002005 0.42 AML other m 2020-10-21T14:53:06.73
IV.MF5.EHE. ML:2.4 0.0015899999999999998 1.64 AML other m 2020-10-21T14:53:07.00
IV.MF5.EHN. ML:2.2 0.0008534999999999999 1.42 AML other m 2020-10-21T14:53:07.75
IV.OFFI.HHN. ML:2.8 0.0038 1.76 AML other m 2020-10-21T14:53:07.03
IV.OFFI.HHE. ML:2.7 0.003285 1.54 AML other m 2020-10-21T14:53:08.01
IV.TERO.HNN. ML:2.6 0.00202 0.32 AML other m 2020-10-21T14:53:09.28
IV.TERO.HHN. ML:2.6 0.00163 0.18 AML other m 2020-10-21T14:53:09.28
IV.TERO.HNE. ML:2.8 0.00311 0.56 AML other m 2020-10-21T14:53:09.25
IV.TERO.HHE. ML:2.7 0.002355 0.56 AML other m 2020-10-21T14:53:09.25
IV.MNTT.EHN. ML:2.6 0.00174 0.32 AML other m 2020-10-21T14:53:09.53
IV.GUMA.HHN. ML:2.6 0.0018399999999999998 0.2 AML other m 2020-10-21T14:53:09.78
IV.SMA1.EHN. ML:2.5 0.001355 0.36 AML other m 2020-10-21T14:53:10.23
IV.SMA1.EHE. ML:2.3 0.0007740000000000001 0.44 AML other m 2020-10-21T14:53:10.27
IV.SAP2.EHN. ML:3.2 0.00645 0.44 AML other m 2020-10-21T14:53:10.52
IV.SAP2.EHE. ML:2.6 0.0015400000000000001 0.24 AML other m 2020-10-21T14:53:10.53
IV.GUMA.HHE. ML:2.6 0.0015249999999999999 0.22 AML other m 2020-10-21T14:53:11.10
IV.NRCA.HHN. ML:2.9 0.00271 0.1 AML other m 2020-10-21T14:53:11.25
IV.NRCA.HNN. ML:2.8 0.002395 0.1 AML other m 2020-10-21T14:53:11.25
IV.MNTT.EHE. ML:2.6 0.0018599999999999999 0.22 AML other m 2020-10-21T14:53:11.33
IV.NRCA.HNE. ML:2.9 0.0030150000000000003 0.08 AML other m 2020-10-21T14:53:11.54
IV.NRCA.HHE. ML:3.0 0.003255 0.08 AML other m 2020-10-21T14:53:11.54
IV.CSP1.EHN. ML:2.7 0.0017349999999999998 1.64 AML other m 2020-10-21T14:53:12.88
IV.CSP1.EHE. ML:2.8 0.0018900000000000002 0.76 AML other m 2020-10-21T14:53:12.52
IV.FDMO.HHE. ML:2.2 0.000507 0.2 AML other m 2020-10-21T14:53:12.91
IV.FDMO.HHN. ML:2.1 0.00040500000000000003 1.42 AML other m 2020-10-21T14:53:13.92
IV.CAMP.HHE. ML:1.6 0.0001175 0.46 AML other m 2020-10-21T14:53:14.67
IV.RM33.HNE. ML:2.2 0.000397 0.5 AML other m 2020-10-21T14:53:15.66
IV.RM33.EHE. ML:2.2 0.00041799999999999997 0.5 AML other m 2020-10-21T14:53:15.67
IV.CAMP.HHN. ML:1.6 0.000144 0.46 AML other m 2020-10-21T14:53:16.66
IV.CESI.HHN. ML:2.2 0.0003205 0.42 AML other m 2020-10-21T14:53:16.56
IV.CESI.HHE. ML:2.2 0.0003165 0.74 AML other m 2020-10-21T14:53:16.55
IV.LNSS.HHE. ML:2.3 0.0005510000000000001 1.32 AML other m 2020-10-21T14:53:17.15
IV.LNSS.HNE. ML:2.3 0.0005635 1.24 AML other m 2020-10-21T14:53:17.15
IV.GAVE.EHE. ML:2.4 0.000587 0.18 AML other m 2020-10-21T14:53:18.12
IV.GAVE.EHN. ML:2.5 0.000654 0.2 AML other m 2020-10-21T14:53:18.13
IV.VCEL.EHE. ML:2.2 0.000316 0.12 AML other m 2020-10-21T14:53:18.79
IV.VCEL.EHN. ML:2.2 0.00032799999999999995 1.48 AML other m 2020-10-21T14:53:19.77
IV.SNTG.HHN. ML:1.7 0.0000906 0.7 AML other m 2020-10-21T14:53:19.69
IV.RM33.HNN. ML:1.9 0.00021774499999999998 0.5888 AML other m 2020-10-21T14:53:15.08
IV.RM33.EHN. ML:1.9 0.00021486395 0.5824 AML other m 2020-10-21T14:53:14.79
IV.LNSS.HHN. ML:2.4 0.00069156625 0.736 AML other m 2020-10-21T14:53:15.54
IV.LNSS.HNN. ML:2.4 0.00065706745 0.256 AML other m 2020-10-21T14:53:15.55
IV.EL6.EHE. ML:2.0 0.00019250000000000002 0.52 AML other m 2020-10-21T14:53:20.46
IV.ASSB.HHN. ML:1.8 0.0001073 0.16 AML other m 2020-10-21T14:53:22.38
IV.EL6.EHN. ML:2.2 0.00027949999999999996 0.4 AML other m 2020-10-21T14:53:22.69
IV.SNTG.HHE. ML:1.6 0.0000761 0.52 AML other m 2020-10-21T14:53:23.52
IV.ASSB.HHE. ML:1.8 0.00009325 0.96 AML other m 2020-10-21T14:53:23.09
IV.MOMA.HHN. ML:1.9 0.00011949999999999999 0.96 AML other m 2020-10-21T14:53:24.49
IV.ATCC.EHE. ML:1.8 0.0000866 1.4 AML other m 2020-10-21T14:53:24.90
IV.T0110.HHN. ML:2.0 0.00016849999999999998 0.96 AML other m 2020-10-21T14:53:25.06
IV.MOMA.HHE. ML:2.0 0.0001275 0.24 AML other m 2020-10-21T14:53:25.84
IV.ATCC.EHN. ML:2.0 0.0001185 0.24 AML other m 2020-10-21T14:53:29.74
IV.MPAG.EHE. ML:1.9 0.0000746 1.26 AML other m 2020-10-21T14:53:36.66
IV.MPAG.EHN. ML:1.8 0.00005795 0.36 AML other m 2020-10-21T14:53:37.19
IV.MGAB.HHN. ML:1.8 0.00004605 0.58 AML other m 2020-10-21T14:53:37.67
IV.ATPI.EHN. ML:2.0 0.0000802 0.38 AML other m 2020-10-21T14:53:39.88
IV.MGAB.HHE. ML:1.8 0.000051200000000000004 0.44 AML other m 2020-10-21T14:53:43.71
IV.ATPI.EHE. ML:1.9 0.0000659 0.56 AML other m 2020-10-21T14:53:44.39
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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