Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 11-09-2020 and time 15:11:37 (Italy) in region 3 km E Roccafluvione (AP)

A magnitude ML 2.1 earthquake occured in region: 3 km E Roccafluvione (AP), on

  • 11-09-2020 13:11:37 (UTC)
  • 11-09-2020 15:11:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8580, 13.5110 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 5 49407 53483
Palmiano AP 6 196 53679
Folignano AP 11 9241 62920
Rotella AP 12 906 63826
Force AP 12 1354 65180
Acquasanta Terme AP 13 2916 68096
Castignano AP 13 2796 70892
Appignano del Tronto AP 14 1785 72677
Valle Castellana TE 14 977 73654
Comunanza AP 14 3166 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 17 2122 88498
Castel di Lama AP 17 8634 97132
Montefortino FM 17 1178 98310
Offida AP 17 5058 103368
Smerillo FM 17 365 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
Arquata del Tronto AP 20 1178 128901
Monte Rinaldo FM 20 379 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)
85 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 2.1 2020-09-11
13:11:37		 42.8582 13.5112 20 2021-02-26
14:55:56		 Bollettino Sismico Italiano INGV 83329981
Reviewed
Rev100 		ML 2.0 2020-09-11
13:11:37		 42.8575 13.5037 18 2020-09-11
13:18:34		 Sala Sismica INGV-Roma 82816781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-11 13:11:37 ± 0.07
Latitude 42.8582 ± 0.0027
Longitude 13.5112 ± 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 83329981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 68
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) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.89483
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 82816781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-11 13:18:34

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 83329981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-28 10:22:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.GSCL.HHZ. 2020-09-11T13:12:21.19 3.0 undecidable manual Pn 2.77 0
IV.VBKN.HHZ. 2020-09-11T13:12:18.73 3.0 negative manual Pg 6.27 0
IT.FIE.HGZ. 2020-09-11T13:12:13.87 3.0 positive manual Pg 5.34 0
IV.MTCE.HHZ. 2020-09-11T13:12:12.52 3.0 undecidable manual S 0.94 0
IV.ARVD.HHZ. 2020-09-11T13:12:05.09 3.0 undecidable manual S 0.4 0
IV.ASSB.HHZ. 2020-09-11T13:12:00.27 0.3 undecidable manual S 287 72.1722 99 0.58 61
IV.PE3.EHZ. 2020-09-11T13:11:58.26 3.0 negative manual P 0.09 0
IV.INTR.HHZ. 2020-09-11T13:11:54.25 0.6 undecidable manual P 161 99.3228 96 -0.32 41
IV.MURB.HHZ. 2020-09-11T13:11:53.84 0.3 undecidable manual P 300 91.7415 97 0.43 61
IV.MOMA.HHZ. 2020-09-11T13:11:51.28 0.3 undecidable manual P 266 76.7676 98 0.15 66
IV.ASSB.HHZ. 2020-09-11T13:11:50.35 0.3 undecidable manual P 287 72.1722 99 -0.08 68
IV.CSP1.EHZ. 2020-09-11T13:11:50.07 0.3 undecidable manual S 316 35.9418 111 -0.22 70
IV.T0110.HHZ. 2020-09-11T13:11:50.32 0.3 undecidable manual P 163 73.0713 99 -0.24 65
IV.ARRO.EHZ. 2020-09-11T13:11:50.05 0.3 undecidable manual P 243 68.1762 100 0.23 66
IV.T1299.EHZ. 2020-09-11T13:11:49.62 0.1 undecidable manual S 217 31.0467 115 0.52 89
IV.FAGN.HHZ. 2020-09-11T13:11:49.31 0.3 undecidable manual P 175 65.9895 100 -0.18 67
IV.NRCA.HNZ. 2020-09-11T13:11:49.59 0.1 undecidable manual S 265 32.4453 114 0.17 96
IV.TERO.HNZ. 2020-09-11T13:11:48.12 0.3 undecidable manual S 164 27.1506 119 -0.05 74
IV.SMA1.EHZ. 2020-09-11T13:11:48.84 0.1 undecidable manual S 210 29.0487 117 0.23 95
IV.EL6.EHZ. 2020-09-11T13:11:48.53 0.1 undecidable manual P 328 61.8936 101 -0.34 87
IV.GUMA.HHZ. 2020-09-11T13:11:48.26 0.1 undecidable manual S 328 26.8509 119 0.18 96
IV.VCEL.EHZ. 2020-09-11T13:11:48.14 0.1 undecidable manual P 152 57.9975 102 -0.14 91
IV.SAP2.EHZ. 2020-09-11T13:11:48.48 0.3 undecidable manual S 341 27.9498 118 0.13 72
IV.SNTG.HHZ. 2020-09-11T13:11:48.98 0.1 undecidable manual P 314 63.8916 100 -0.18 90
IV.MC2.EHZ. 2020-09-11T13:11:48.40 0.1 undecidable manual S 283 26.8509 119 0.31 94
IV.CESI.HHZ. 2020-09-11T13:11:47.37 0.1 negative manual P 288 51.9036 103 0.01 95
IV.MNTT.EHZ. 2020-09-11T13:11:47.87 0.3 undecidable manual S 17 23.6541 123 0.52 66
IV.GAVE.EHZ. 2020-09-11T13:11:47.61 0.1 undecidable manual P 250 53.502 103 0.01 95
IV.OFFI.HHZ. 2020-09-11T13:11:46.28 0.3 undecidable manual S 59 16.5723 135 0.4 69
IV.LNSS.HHZ. 2020-09-11T13:11:46.86 0.1 undecidable manual P 234 47.7189 105 0.13 94
IV.RM33.EHZ. 2020-09-11T13:11:46.48 0.1 undecidable manual P 212 45.7209 106 0.05 96
IV.MF5.EHZ. 2020-09-11T13:11:45.31 0.1 undecidable manual S 344 14.9739 138 -0.28 97
IV.TRTR.HHE. 2020-09-11T13:11:45.20 0.3 undecidable manual P 99 33.2445 113 0.58 64
IV.MTRA.HNZ. 2020-09-11T13:11:45.34 0.1 undecidable manual S 220 14.5743 139 -0.19 98
IV.GIGS.HHE. 2020-09-11T13:11:45.98 0.1 undecidable manual P 174 45.2214 106 -0.38 89
IV.FDMO.HHZ. 2020-09-11T13:11:45.33 0.1 undecidable manual P 300 39.7269 108 -0.22 93
IV.MMO1.EHZ. 2020-09-11T13:11:45.36 0.1 undecidable manual S 287 15.6732 137 -0.36 94
IV.MNTP.HNZ. 2020-09-11T13:11:44.24 0.1 undecidable manual P 354 31.1466 115 -0.09 97
IV.CSP1.EHZ. 2020-09-11T13:11:44.81 0.1 positive manual P 316 35.9418 111 -0.19 94
IV.SMA1.EHZ. 2020-09-11T13:11:44.09 0.1 positive manual P 210 29.0487 117 0.06 98
IV.CAMP.HHZ. 2020-09-11T13:11:44.98 0.1 positive manual P 193 36.741 110 -0.14 95
IV.T1299.EHZ. 2020-09-11T13:11:44.52 0.1 undecidable manual P 217 31.0467 115 0.21 95
IV.NRCA.HNZ. 2020-09-11T13:11:44.47 0.1 negative manual P 265 32.4453 114 -0.03 98
IV.MNTT.EHZ. 2020-09-11T13:11:43.45 0.1 positive manual P 17 23.6541 123 0.14 97
IV.MC2.EHZ. 2020-09-11T13:11:43.78 0.1 negative manual P 283 26.8509 119 0.05 99
IV.TERO.HNZ. 2020-09-11T13:11:43.64 0.1 positive manual P 164 27.1506 119 -0.14 97
IV.GUMA.HHZ. 2020-09-11T13:11:43.64 0.1 positive manual P 328 26.8509 119 -0.08 98
IV.SAP2.EHZ. 2020-09-11T13:11:43.67 0.3 undecidable manual P 341 27.9498 118 -0.21 72
IV.MMO1.EHZ. 2020-09-11T13:11:42.13 0.1 undecidable manual P 287 15.6732 137 -0.23 97
IV.MF5.EHZ. 2020-09-11T13:11:42.10 0.1 positive manual P 344 14.9739 138 -0.19 98
IV.MTRA.HNZ. 2020-09-11T13:11:42.17 0.1 positive manual P 220 14.5743 139 -0.08 100
IV.OFFI.HHZ. 2020-09-11T13:11:42.55 0.1 negative manual P 59 16.5723 135 0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MF5.EHN. ML:2.2 0.0009040000000000001 0.36 AML other m 2020-09-11T13:11:45.48
IV.MTRA.HNE. ML:2.7 0.0030549999999999996 0.52 AML other m 2020-09-11T13:11:45.72
IV.MTRA.EHE. ML:2.7 0.00309 0.52 AML other m 2020-09-11T13:11:45.72
IV.MF5.EHE. ML:2.1 0.0008005 0.28 AML other m 2020-09-11T13:11:45.73
IV.MTRA.EHN. ML:2.2 0.0011425 0.4 AML other m 2020-09-11T13:11:45.59
IV.MTRA.HNN. ML:2.2 0.0011545000000000001 0.4 AML other m 2020-09-11T13:11:45.59
IV.MNTT.EHE. ML:2.7 0.0022800000000000003 0.24 AML other m 2020-09-11T13:11:48.18
IV.TERO.HHN. ML:2.0 0.0005425 0.6 AML other m 2020-09-11T13:11:48.35
IV.TERO.HNN. ML:2.0 0.0004895 0.6 AML other m 2020-09-11T13:11:48.35
IV.GUMA.HHN. ML:2.4 0.0010725 0.22 AML other m 2020-09-11T13:11:48.46
IV.OFFI.HHE. ML:2.1 0.00074 1.06 AML other m 2020-09-11T13:11:48.15
IV.TERO.HHE. ML:2.1 0.000558 0.68 AML other m 2020-09-11T13:11:48.35
IV.TERO.HNE. ML:2.2 0.000657 0.68 AML other m 2020-09-11T13:11:48.35
IV.OFFI.HHN. ML:2.2 0.000933 1.36 AML other m 2020-09-11T13:11:48.91
IV.GUMA.HHE. ML:2.2 0.000682 0.42 AML other m 2020-09-11T13:11:48.76
IV.MNTT.EHN. ML:2.4 0.00134 1.24 AML other m 2020-09-11T13:11:49.72
IV.SMA1.EHE. ML:2.4 0.0010255000000000002 0.42 AML other m 2020-09-11T13:11:49.25
IV.SMA1.EHN. ML:2.5 0.001204 0.24 AML other m 2020-09-11T13:11:49.16
IV.NRCA.HHE. ML:2.4 0.0010609999999999999 1.06 AML other m 2020-09-11T13:11:50.08
IV.SAP2.EHN. ML:2.7 0.002165 0.28 AML other m 2020-09-11T13:11:50.67
IV.CSP1.EHN. ML:2.1 0.000404 0.34 AML other m 2020-09-11T13:11:50.69
IV.NRCA.HHN. ML:2.2 0.0006755 1.08 AML other m 2020-09-11T13:11:50.75
IV.CSP1.EHE. ML:2.3 0.0007099999999999999 0.4 AML other m 2020-09-11T13:11:50.55
IV.SAP2.EHE. ML:1.9 0.0003105 1.2 AML other m 2020-09-11T13:11:51.67
IV.FDMO.HHE. ML:2.2 0.000513 0.52 AML other m 2020-09-11T13:11:51.72
IV.FDMO.HHN. ML:2.2 0.0005775 0.32 AML other m 2020-09-11T13:11:51.56
IV.RM33.EHN. ML:2.2 0.000438 0.24 AML other m 2020-09-11T13:11:53.87
IV.RM33.HNN. ML:2.2 0.00046550000000000004 0.24 AML other m 2020-09-11T13:11:53.75
IV.CAMP.HHE. ML:1.5 0.00011105000000000002 1.56 AML other m 2020-09-11T13:11:53.97
IV.RM33.EHE. ML:2.3 0.000508 0.18 AML other m 2020-09-11T13:11:54.12
IV.RM33.HNE. ML:2.3 0.0005265 0.16 AML other m 2020-09-11T13:11:54.03
IV.LNSS.HHN. ML:2.2 0.000376 0.26 AML other m 2020-09-11T13:11:54.39
IV.LNSS.HHE. ML:1.9 0.0002185 0.88 AML other m 2020-09-11T13:11:55.59
IV.CESI.HHN. ML:2.0 0.000257 0.28 AML other m 2020-09-11T13:11:55.20
IV.CAMP.HHN. ML:1.6 0.0001305 0.44 AML other m 2020-09-11T13:11:55.44
IV.CESI.HHE. ML:2.1 0.000279 0.72 AML other m 2020-09-11T13:11:55.20
IV.GAVE.EHN. ML:1.8 0.00015 0.66 AML other m 2020-09-11T13:11:56.33
IV.GAVE.EHE. ML:2.0 0.00020800000000000001 1.22 AML other m 2020-09-11T13:11:58.61
IV.SNTG.HHN. ML:1.7 0.00008494999999999999 1.14 AML other m 2020-09-11T13:11:58.89
IV.SNTG.HHE. ML:1.6 0.0000633 0.14 AML other m 2020-09-11T13:11:58.64
IV.ASSB.HHN. ML:1.8 0.0001069 0.14 AML other m 2020-09-11T13:12:01.33
IV.EL6.EHE. ML:1.8 0.00012179999999999999 0.6 AML other m 2020-09-11T13:12:01.56
IV.EL6.EHN. ML:1.8 0.000132 0.88 AML other m 2020-09-11T13:12:02.11
IV.ASSB.HHE. ML:1.8 0.0000892 0.16 AML other m 2020-09-11T13:12:02.33
IV.VCEL.EHE. ML:1.8 0.00011885 0.76 AML other m 2020-09-11T13:12:02.57
IV.ARRO.EHE. ML:1.5 0.00005145 0.24 AML other m 2020-09-11T13:12:02.67
IV.ARRO.EHN. ML:1.6 0.000060450000000000006 0.92 AML other m 2020-09-11T13:12:03.76
IV.MOMA.HHE. ML:1.7 0.00006695 0.14 AML other m 2020-09-11T13:12:03.82
IV.MOMA.HHN. ML:1.6 0.000050549999999999995 0.78 AML other m 2020-09-11T13:12:04.57
IV.FAGN.HHN. ML:1.7 0.0000973 0.3 AML other m 2020-09-11T13:12:06.55
IV.T0110.HHE. ML:1.8 0.0000894 1.12 AML other m 2020-09-11T13:12:08.59
IV.VCEL.EHN. ML:1.6 0.0000916 0.4 AML other m 2020-09-11T13:12:08.61
IV.MURB.HHN. ML:2.2 0.00016700000000000002 0.26 AML other m 2020-09-11T13:12:13.18
IV.MURB.HHE. ML:2.2 0.000167 0.26 AML other m 2020-09-11T13:12:14.65
IV.FAGN.HHE. ML:2.0 0.00017099999999999998 0.44 AML other m 2020-09-11T13:12:14.72
IV.T0110.HHN. ML:1.8 0.00008935 0.38 AML other m 2020-09-11T13:12:15.92
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
Waveforms Seismic signals in miniseed + resp format Download