Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 04-10-2020 and time 03:28:16 (UTC) in region 3 km E Roccafluvione (AP)

A magnitude ML 2.0 earthquake occured in region: 3 km E Roccafluvione (AP), on

  • 04-10-2020 03:28:16 (UTC)
  • 04-10-2020 05:28:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8590, 13.5100 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
Roccafluvione AP 3 2010 2010
Venarotta AP 3 2066 4076
Ascoli Piceno AP 6 49407 53483
Palmiano AP 6 196 53679
Folignano AP 11 9241 62920
Rotella AP 12 906 63826
Force AP 12 1354 65180
Castignano AP 13 2796 67976
Acquasanta Terme AP 13 2916 70892
Appignano del Tronto AP 14 1785 72677
Comunanza AP 14 3166 75843
Valle Castellana TE 14 977 76820
Montedinove AP 14 488 77308
Montegallo AP 15 523 77831
Maltignano AP 15 2401 80232
Montefalcone Appennino FM 15 424 80656
Montemonaco AP 16 604 81260
Civitella del Tronto TE 16 5116 86376
Montalto delle Marche AP 16 2122 88498
Castel di Lama AP 17 8634 97132
Montefortino FM 17 1178 98310
Smerillo FM 17 365 98675
Offida AP 17 5058 103733
Sant'Egidio alla Vibrata TE 17 9811 113544
Montelparo FM 18 778 114322
Santa Vittoria in Matenano FM 18 1330 115652
Castorano AP 18 2380 118032
Amandola FM 19 3629 121661
Ancarano TE 19 1857 123518
Rocca Santa Maria TE 19 537 124055
Colli del Tronto AP 20 3668 127723
Monte Rinaldo FM 20 379 128102
Arquata del Tronto AP 20 1178 129280

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Teramo (54892 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
65 Km NW of Montesilvano (53738 inhabitants)
67 Km E of Foligno (57155 inhabitants)
72 Km NW of Pescara (121014 inhabitants)
78 Km E of Terni (111501 inhabitants)
78 Km NW of Chieti (51815 inhabitants)
84 Km S of Ancona (100861 inhabitants)
95 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 2.0 2020-10-04
03:28:16		 42.859 13.5105 20 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85592111
Reviewed
Rev100 		ML 1.9 2020-10-04
03:28:16		 42.8577 13.4928 18 2020-10-04
03:37:08		 Sala Sismica INGV-Roma 83485161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-04 03:28:16 ± 0.1
Latitude 42.8590 ± 0.0036
Longitude 13.5105 ± 0.0061
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 85592111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 492
Semi-minor axis of confidence ellipse (meter) 155
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.13220
Epicentral distance of station farthest from the epicenter (degree) 0.48204
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 85592111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-21 03:09:30

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 83485161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-04 03:37:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-10-04T03:28:28.22 0.6 undecidable manual S 265 32.3454 113 0.27 47
IV.CSP1.EHZ. 2020-10-04T03:28:28.90 0.6 undecidable manual S 316 35.8419 111 0.1 48
IV.T1299.HNN. 2020-10-04T03:28:28.23 0.6 undecidable manual S 217 31.1466 114 0.59 43
IV.SMA1.EHZ. 2020-10-04T03:28:27.51 0.6 undecidable manual S 209 29.0487 116 0.35 46
IV.MC2.EHZ. 2020-10-04T03:28:27.05 0.6 undecidable manual S 283 26.751 119 0.44 45
IV.SAP2.EHZ. 2020-10-04T03:28:27.19 0.6 undecidable manual S 341 27.8499 117 0.33 47
IV.GUMA.HHZ. 2020-10-04T03:28:26.82 0.6 undecidable manual S 328 26.751 119 0.23 48
IV.GAVE.EHZ. 2020-10-04T03:28:26.37 0.3 undecidable manual P 250 53.502 103 0.22 69
IV.TERO.HHZ. 2020-10-04T03:28:26.71 0.6 undecidable manual S 164 27.2505 118 -0.02 50
IV.MNTT.EHZ. 2020-10-04T03:28:26.39 0.3 undecidable manual S 17 23.5542 123 0.52 67
IV.LNSS.HHZ. 2020-10-04T03:28:25.44 0.3 undecidable manual P 234 47.7189 104 0.16 70
IV.RM33.EHZ. 2020-10-04T03:28:25.07 1.0 undecidable manual P 212 45.7209 105 0.08 24
IV.CESI.HHZ. 2020-10-04T03:28:25.76 1.0 undecidable manual P 288 51.8037 103 -0.14 23
IV.GIGS.HHN. 2020-10-04T03:28:24.58 0.6 undecidable manual P 174 45.3213 105 -0.35 45
IV.MF5.EHZ. 2020-10-04T03:28:23.81 0.3 undecidable manual S 344 14.874 138 -0.28 73
IV.CAMP.HHZ. 2020-10-04T03:28:23.54 0.1 undecidable manual P 193 36.8298 110 -0.14 95
IV.MMO1.EHZ. 2020-10-04T03:28:23.88 0.3 undecidable manual S 287 15.5733 136 -0.34 72
IV.MTRA.HNZ. 2020-10-04T03:28:23.82 0.3 undecidable manual S 219 14.6742 138 -0.23 74
IV.PF6.EHN. 2020-10-04T03:28:23.90 1.0 undecidable manual P 320 40.2264 108 -0.27 23
IV.NRCA.HHZ. 2020-10-04T03:28:23.00 0.1 undecidable manual P 265 32.3454 113 -0.04 98
IV.FDMO.HHZ. 2020-10-04T03:28:23.83 0.1 undecidable manual P 300 39.627 108 -0.25 93
IV.CSP1.EHZ. 2020-10-04T03:28:23.33 0.1 undecidable manual P 316 35.8419 111 -0.2 94
IV.TRTR.HHE. 2020-10-04T03:28:23.76 1.0 undecidable manual P 100 33.2445 112 0.59 22
IV.SAP2.EHZ. 2020-10-04T03:28:22.38 1.0 undecidable manual P 341 27.8499 117 -0.03 25
IV.T1299.HNN. 2020-10-04T03:28:22.94 0.1 positive manual P 217 31.1466 114 0.08 98
IV.GUMA.HHZ. 2020-10-04T03:28:22.16 0.3 undecidable manual P 328 26.751 119 -0.09 74
IV.SMA1.EHZ. 2020-10-04T03:28:22.57 0.1 positive manual P 209 29.0487 116 -0.01 99
IV.MNTP.HNZ. 2020-10-04T03:28:22.79 0.6 undecidable manual P 354 31.0467 114 -0.06 49
IV.MC2.EHZ. 2020-10-04T03:28:22.28 0.1 positive manual P 283 26.751 119 0.02 100
IV.TERO.HHZ. 2020-10-04T03:28:22.36 0.6 undecidable manual P 164 27.2505 118 0.03 50
IV.MNTT.EHZ. 2020-10-04T03:28:21.96 0.1 undecidable manual P 17 23.5542 123 0.12 98
IV.MF5.EHZ. 2020-10-04T03:28:20.60 0.1 negative manual P 344 14.874 138 -0.21 98
IV.MMO1.EHZ. 2020-10-04T03:28:20.66 0.3 undecidable manual P 287 15.5733 136 -0.23 73
IV.MTRA.HNZ. 2020-10-04T03:28:20.68 0.1 positive manual P 219 14.6742 138 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:2.1 0.0009218196 0.1408 AML other m 2020-10-04T03:28:24.18
IV.MF5.EHN. ML:2.1 0.0007930550000000001 1.6992 AML other m 2020-10-04T03:28:24.11
IV.MTRA.EHN. ML:2.1 0.0009259013 0.1408 AML other m 2020-10-04T03:28:24.18
IV.MF5.EHE. ML:1.9 0.00049964215 0.24 AML other m 2020-10-04T03:28:24.39
IV.MTRA.HNE. ML:2.0 0.000711975 0.1104 AML other m 2020-10-04T03:28:24.50
IV.MTRA.EHE. ML:2.0 0.0007359506500000001 0.1008 AML other m 2020-10-04T03:28:24.50
IV.TERO.HHE. ML:1.9 0.00033883895 0.2608 AML other m 2020-10-04T03:28:26.88
IV.TERO.HNE. ML:2.0 0.0004597036999999999 0.2496 AML other m 2020-10-04T03:28:26.89
IV.MNTT.EHN. ML:2.4 0.0012704409000000002 0.28 AML other m 2020-10-04T03:28:26.84
IV.GUMA.HNE. ML:2.1 0.0005521726000000001 1.7104 AML other m 2020-10-04T03:28:26.88
IV.GUMA.HHE. ML:2.2 0.0006655334 1.7408 AML other m 2020-10-04T03:28:26.89
IV.SAP2.EHE. ML:1.8 0.0002520018 0.28 AML other m 2020-10-04T03:28:27.57
IV.SAP2.EHN. ML:2.4 0.001174258 0.2 AML other m 2020-10-04T03:28:27.69
IV.SMA1.EHN. ML:2.0 0.00044542004999999994 0.1008 AML other m 2020-10-04T03:28:27.73
IV.SMA1.EHE. ML:2.0 0.00037460065 0.2016 AML other m 2020-10-04T03:28:27.86
IV.MNTT.EHE. ML:2.3 0.0010587253999999999 0.28 AML other m 2020-10-04T03:28:28.54
IV.NRCA.HHN. ML:2.2 0.0006842757 0.12 AML other m 2020-10-04T03:28:28.59
IV.NRCA.HNN. ML:2.2 0.0006638078 0.1104 AML other m 2020-10-04T03:28:28.60
IV.NRCA.HHE. ML:2.2 0.00059195785 0.08 AML other m 2020-10-04T03:28:28.99
IV.NRCA.HNE. ML:2.1 0.00052009615 1.88 AML other m 2020-10-04T03:28:28.00
IV.CSP1.EHE. ML:2.1 0.00044450745 0.1392 AML other m 2020-10-04T03:28:29.06
IV.TERO.HHN. ML:1.7 0.00021833229999999998 0.2192 AML other m 2020-10-04T03:28:29.45
IV.CSP1.EHN. ML:2.2 0.0005119157 0.1792 AML other m 2020-10-04T03:28:29.47
IV.RM33.HNN. ML:1.7 0.0001445005 0.6096 AML other m 2020-10-04T03:28:29.41
IV.TERO.HNN. ML:1.8 0.00026256885000000004 1.7504 AML other m 2020-10-04T03:28:30.11
IV.FDMO.HHN. ML:1.8 0.0002006465 0.1392 AML other m 2020-10-04T03:28:30.52
IV.FDMO.HHE. ML:1.7 0.00014259725 0.24 AML other m 2020-10-04T03:28:30.47
IV.GUMA.HNN. ML:2.0 0.00052383355 0.4592 AML other m 2020-10-04T03:28:31.44
IV.GUMA.HHN. ML:2.0 0.0004650649 0.4992 AML other m 2020-10-04T03:28:32.42
IV.RM33.EHN. ML:1.6 0.00010501559999999998 0.1792 AML other m 2020-10-04T03:28:32.47
IV.RM33.HNE. ML:1.8 0.00017144065 0.1904 AML other m 2020-10-04T03:28:32.59
IV.RM33.EHE. ML:1.8 0.0001634862 0.2 AML other m 2020-10-04T03:28:32.50
IV.CESI.HHN. ML:1.9 0.0001785322 0.28 AML other m 2020-10-04T03:28:33.94
IV.CESI.HHE. ML:1.4 0.00006671822000000001 0.1392 AML other m 2020-10-04T03:28:34.33
IV.CESI.HNN. ML:2.0 0.00021447070000000002 0.4288 AML other m 2020-10-04T03:28:35.25
IV.GAVE.EHE. ML:2.0 0.00019853995 0.1584 AML other m 2020-10-04T03:28:35.40
IV.GAVE.HNE. ML:2.0 0.0002063504 0.3408 AML other m 2020-10-04T03:28:35.56
IV.GAVE.EHN. ML:1.7 0.00010477624499999998 0.1808 AML other m 2020-10-04T03:28:35.69
IV.LNSS.HHN. ML:1.9 0.00018842390000000002 0.28 AML other m 2020-10-04T03:28:37.23
IV.LNSS.HHE. ML:1.7 0.00014162732 0.4208 AML other m 2020-10-04T03:28:37.44
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