Earthquake with magnitude of ML 2.1 on date 16-10-2020 and time 02:42:11 (UTC) in region 4 km W Ascoli Piceno (AP)

A magnitude ML 2.1 earthquake occured in region: 4 km W Ascoli Piceno (AP), on

  • 16-10-2020 02:42:11 (UTC)
  • 16-10-2020 04:42:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.532 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
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 11 906 63826
Castignano AP 12 2796 66622
Appignano del Tronto AP 12 1785 68407
Force AP 12 1354 69761
Maltignano AP 13 2401 72162
Montedinove AP 13 488 72650
Valle Castellana TE 14 977 73627
Acquasanta Terme AP 14 2916 76543
Comunanza AP 15 3166 79709
Civitella del Tronto TE 15 5116 84825
Castel di Lama AP 15 8634 93459
Sant'Egidio alla Vibrata TE 16 9811 103270
Montefalcone Appennino FM 16 424 103694
Offida AP 16 5058 108752
Montalto delle Marche AP 16 2122 110874
Montegallo AP 16 523 111397
Castorano AP 17 2380 113777
Montemonaco AP 17 604 114381
Ancarano TE 17 1857 116238
Montelparo FM 18 778 117016
Smerillo FM 18 365 117381
Colli del Tronto AP 18 3668 121049
Montefortino FM 18 1178 122227
Santa Vittoria in Matenano FM 18 1330 123557
Cossignano AP 19 978 124535
Rocca Santa Maria TE 19 537 125072
Monte Rinaldo FM 19 379 125451
Campli TE 19 7209 132660
Amandola FM 20 3629 136289

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Teramo (54892 inhabitants)
58 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)
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

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.1 2020-10-16
02:42:11
42.8597 13.5325 20 2021-02-26
14:56:00
Bollettino Sismico Italiano INGV 84052421
Reviewed
Rev100
ML 2.1 2020-10-16
02:42:11
42.8558 13.5383 18 2020-10-16
02:48:57
Sala Sismica INGV-Roma 83815261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-16 02:42:11 ± 0.09
Latitude 42.8597 ± 0.0027
Longitude 13.5325 ± 0.0049
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 84052421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
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 59
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.76982
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 84052421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-25 01:05:13

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 83815261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-16 02:48:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCIV.CHZ. 2020-10-16T02:42:55.96 3.0 undecidable manual Sn 0.93 0
IV.RINC.HHZ. 2020-10-16T02:42:42.24 3.0 undecidable manual Pn 0.98 0
IV.PTRJ.HNZ. 2020-10-16T02:42:39.80 3.0 undecidable manual Pn -0.6 0
IV.ARVD.HHZ. 2020-10-16T02:42:37.33 0.3 undecidable manual S 326 0.7698 97 0.21 65
IV.FOSV.EHZ. 2020-10-16T02:42:35.58 0.3 undecidable manual S 308 0.7114 98 0.17 66
IV.LATB.EHZ. 2020-10-16T02:42:34.70 3.0 positive manual Pn -2.29 0
IV.T0110.HHZ. 2020-10-16T02:42:34.06 0.1 undecidable manual S 164 0.6547 99 0.31 86
IV.ASSB.HHZ. 2020-10-16T02:42:34.62 0.1 undecidable manual S 286 0.6646 98 0.58 81
IV.SNTG.HHZ. 2020-10-16T02:42:32.22 0.3 undecidable manual S 313 0.5855 100 0.5 85
IV.VCEL.EHN. 2020-10-16T02:42:30.31 0.3 undecidable manual S 154 0.5171 101 0.58 62
IV.GAVE.EHZ. 2020-10-16T02:42:29.42 0.1 undecidable manual S 251 0.4973 102 0.27 91
IV.CESI.HHZ. 2020-10-16T02:42:29.10 0.1 undecidable manual S 288 0.482 102 0.4 88
IV.LNSS.HHZ. 2020-10-16T02:42:28.10 0.1 undecidable manual S 235 0.4434 104 0.51 87
IV.RM33.EHZ. 2020-10-16T02:42:27.34 0.1 undecidable manual S 214 0.4209 105 0.38 90
IV.ARVD.HHZ. 2020-10-16T02:42:26.38 0.1 undecidable manual P 326 0.7698 97 0 90
IV.GIGS.HHE. 2020-10-16T02:42:26.21 0.1 undecidable manual S 176 0.4074 105 -0.35 91
IV.PF6.EHN. 2020-10-16T02:42:25.55 0.1 undecidable manual S 318 0.3723 107 -0.01 98
IV.FOSV.EHZ. 2020-10-16T02:42:25.43 0.3 undecidable manual P 308 0.7114 98 0.04 68
IV.TRTR.HHE. 2020-10-16T02:42:25.00 0.6 undecidable manual S 100 0.2842 114 1.89 21
IV.FDMO.HHZ. 2020-10-16T02:42:25.39 0.1 undecidable manual S 299 0.3705 107 -0.12 95
IV.CSP1.EHZ. 2020-10-16T02:42:24.45 0.1 undecidable manual S 314 0.3336 110 -0.02 98
IV.T0110.HHZ. 2020-10-16T02:42:24.18 0.1 negative manual P 164 0.6547 99 -0.25 88
IV.ASSB.HHZ. 2020-10-16T02:42:24.71 0.1 undecidable manual P 286 0.6646 98 0.11 90
IV.T1299.HNN. 2020-10-16T02:42:23.58 0.1 undecidable manual S 219 0.2905 113 0.29 94
IV.NRCA.HHZ. 2020-10-16T02:42:23.76 0.1 undecidable manual S 265 0.3076 112 0.01 99
IV.FAGN.HHZ. 2020-10-16T02:42:23.33 0.1 undecidable manual P 176 0.5945 100 -0.09 92
IV.VCEL.EHN. 2020-10-16T02:42:22.02 0.3 undecidable manual P 154 0.5171 101 -0.09 70
IV.SMA1.EHZ. 2020-10-16T02:42:22.78 0.3 undecidable manual S 212 0.2707 115 0.03 99
IV.SNTG.HHZ. 2020-10-16T02:42:22.92 0.1 undecidable manual P 313 0.5855 100 -0.34 87
IV.MC2.EHZ. 2020-10-16T02:42:22.51 0.1 undecidable manual S 282 0.2572 117 0.13 97
IV.SAP2.EHZ. 2020-10-16T02:42:22.70 0.1 undecidable manual S 338 0.2563 117 0.34 93
IV.EL6.EHZ. 2020-10-16T02:42:22.67 0.1 negative manual P 326 0.5648 100 -0.24 89
IV.GUMA.HHZ. 2020-10-16T02:42:22.34 0.1 undecidable manual S 325 0.2491 118 0.17 97
IV.TERO.HHZ. 2020-10-16T02:42:21.94 0.1 undecidable manual S 167 0.2428 118 -0.06 100
IV.GAVE.EHZ. 2020-10-16T02:42:21.84 0.1 undecidable manual P 251 0.4973 102 0.06 95
IV.CESI.HHZ. 2020-10-16T02:42:21.37 0.1 negative manual P 288 0.482 102 -0.15 93
IV.MNTT.EHZ. 2020-10-16T02:42:21.36 0.1 undecidable manual S 13 0.2077 123 0.25 95
IV.RM33.EHZ. 2020-10-16T02:42:20.49 0.1 negative manual P 214 0.4209 105 -0.02 96
IV.LNSS.HHZ. 2020-10-16T02:42:20.79 0.1 undecidable manual P 235 0.4434 104 -0.09 95
IV.GIGS.HHE. 2020-10-16T02:42:19.81 0.1 negative manual P 176 0.4074 105 -0.47 88
IV.MF5.EHN. 2020-10-16T02:42:19.36 0.1 undecidable manual S 337 0.1385 137 -0.18 99
IV.MTRA.HNZ. 2020-10-16T02:42:19.21 0.1 undecidable manual S 224 0.143 136 -0.43 94
IV.PF6.EHN. 2020-10-16T02:42:19.27 0.1 undecidable manual P 318 0.3723 107 -0.43 89
IV.MMO1.EHZ. 2020-10-16T02:42:19.46 0.1 undecidable manual S 285 0.1556 133 -0.44 93
IV.FDMO.HHZ. 2020-10-16T02:42:19.37 0.1 undecidable manual P 299 0.3705 107 -0.31 92
IV.NRCA.HHZ. 2020-10-16T02:42:18.45 0.1 negative manual P 265 0.3076 112 -0.21 95
IV.CSP1.EHZ. 2020-10-16T02:42:18.80 0.1 positive manual P 314 0.3336 110 -0.28 93
IV.TRTR.HHE. 2020-10-16T02:42:18.95 0.3 undecidable manual P 100 0.2842 114 0.66 63
IV.T1299.HNN. 2020-10-16T02:42:18.35 0.1 positive manual P 219 0.2905 113 -0.04 99
IV.SAP2.EHZ. 2020-10-16T02:42:17.86 0.1 negative manual P 338 0.2563 117 0 100
IV.GUMA.HHZ. 2020-10-16T02:42:17.62 0.1 positive manual P 325 0.2491 118 -0.13 98
IV.MNTT.EHZ. 2020-10-16T02:42:17.36 0.1 positive manual P 13 0.2077 123 0.22 96
IV.SMA1.EHZ. 2020-10-16T02:42:17.92 0.1 positive manual P 212 0.2707 115 -0.17 97
IV.TERO.HHZ. 2020-10-16T02:42:17.40 0.1 positive manual P 167 0.2428 118 -0.25 96
IV.MC2.EHZ. 2020-10-16T02:42:17.75 0.1 undecidable manual P 282 0.2572 117 -0.12 98
IV.MMO1.EHZ. 2020-10-16T02:42:16.06 0.1 undecidable manual P 285 0.1556 133 -0.38 95
IV.MF5.EHN. 2020-10-16T02:42:16.04 0.1 positive manual P 337 0.1385 137 -0.19 99
IV.OFFI.HHE. 2020-10-16T02:42:16.35 0.1 negative manual P 56 0.1349 138 0.16 99
IV.MTRA.HNZ. 2020-10-16T02:42:16.02 0.1 positive manual P 224 0.143 136 -0.27 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNE. ML:2.5 0.002005 0.5 AML other m 2020-10-16T02:42:19.55
IV.MTRA.EHE. ML:2.5 0.002045 0.48 AML other m 2020-10-16T02:42:19.55
IV.MTRA.HNN. ML:2.1 0.0008815 0.22 AML other m 2020-10-16T02:42:19.52
IV.MTRA.EHN. ML:2.1 0.000865 0.24 AML other m 2020-10-16T02:42:19.52
IV.TERO.HHN. ML:1.8 0.000281076 0.16 AML other m 2020-10-16T02:42:22.09
IV.TERO.HHE. ML:2.1 0.0005785 0.18 AML other m 2020-10-16T02:42:22.04
IV.MNTT.EHE. ML:2.2 0.00077695055 0.2 AML other m 2020-10-16T02:42:22.15
IV.MNTT.EHN. ML:2.4 0.001355 0.36 AML other m 2020-10-16T02:42:22.30
IV.TERO.HNE. ML:2.2 0.000709 0.54 AML other m 2020-10-16T02:42:22.09
IV.GUMA.HNE. ML:2 0.0004023918 0.1792 AML other m 2020-10-16T02:42:22.51
IV.GUMA.HHN. ML:2.1 0.000552 0.2 AML other m 2020-10-16T02:42:22.50
IV.TERO.HNN. ML:2 0.000481 1.26 AML other m 2020-10-16T02:42:22.09
IV.SAP2.EHE. ML:1.7 0.000230333405 0.4816 AML other m 2020-10-16T02:42:23.04
IV.SMA1.EHN. ML:2.2 0.0006386527 0.6592 AML other m 2020-10-16T02:42:23.16
IV.SAP2.EHN. ML:2.4 0.0011527495 0.28 AML other m 2020-10-16T02:42:22.77
IV.GUMA.HHE. ML:1.9 0.00038348185 0.5808 AML other m 2020-10-16T02:42:22.98
IV.SMA1.EHE. ML:2 0.0004448623 0.4592 AML other m 2020-10-16T02:42:23.07
IV.NRCA.HNE. ML:2.3 0.00078502795 0.08 AML other m 2020-10-16T02:42:24.11
IV.NRCA.HHE. ML:2.3 0.00078095095 0.08 AML other m 2020-10-16T02:42:24.11
IV.NRCA.HHN. ML:2.5 0.001115 0.08 AML other m 2020-10-16T02:42:24.22
IV.NRCA.HNN. ML:2.4 0.001009347 0.08 AML other m 2020-10-16T02:42:24.19
IV.CSP1.EHN. ML:2.3 0.0007 0.3 AML other m 2020-10-16T02:42:24.60
IV.CSP1.EHE. ML:2.2 0.0006035 0.42 AML other m 2020-10-16T02:42:24.85
IV.FDMO.HHN. ML:1.9 0.000219 0.12 AML other m 2020-10-16T02:42:25.65
IV.FDMO.HHE. ML:1.8 0.0001995 0.54 AML other m 2020-10-16T02:42:25.82
IV.RM33.EHN. ML:1.9 0.000188 0.24 AML other m 2020-10-16T02:42:27.59
IV.RM33.EHE. ML:1.8 0.00016565385 0.1408 AML other m 2020-10-16T02:42:27.93
IV.LNSS.HHE. ML:1.8 0.00014480305 0.1392 AML other m 2020-10-16T02:42:28.29
IV.LNSS.HNN. ML:2.1 0.0003128819 0.76 AML other m 2020-10-16T02:42:28.68
IV.LNSS.HHN. ML:2 0.0002611207 0.7584 AML other m 2020-10-16T02:42:28.30
IV.CESI.HHN. ML:1.8 0.0001414301 0.9008 AML other m 2020-10-16T02:42:29.28
IV.CESI.HHE. ML:1.8 0.00014160315 0.4 AML other m 2020-10-16T02:42:29.28
IV.GAVE.EHN. ML:1.6 9.632623E-5 0.2608 AML other m 2020-10-16T02:42:29.96
IV.GAVE.EHE. ML:1.7 0.00011628312 0.6 AML other m 2020-10-16T02:42:29.00
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download