Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 15-10-2020 and time 03:27:44 (Italy) in region 3 km E Roccafluvione (AP)

A magnitude ML 1.9 earthquake occured in region: 3 km E Roccafluvione (AP), on

  • 15-10-2020 01:27:44 (UTC)
  • 15-10-2020 03:27:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8550, 13.5130 at 19 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 7 196 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
Valle Castellana TE 13 977 71869
Appignano del Tronto AP 14 1785 73654
Comunanza AP 14 3166 76820
Montedinove AP 14 488 77308
Maltignano AP 15 2401 79709
Montegallo AP 15 523 80232
Montefalcone Appennino FM 16 424 80656
Civitella del Tronto TE 16 5116 85772
Montemonaco AP 16 604 86376
Castel di Lama AP 17 8634 95010
Montalto delle Marche AP 17 2122 97132
Sant'Egidio alla Vibrata TE 17 9811 106943
Montefortino FM 17 1178 108121
Offida AP 17 5058 113179
Smerillo FM 18 365 113544
Castorano AP 18 2380 115924
Montelparo FM 18 778 116702
Santa Vittoria in Matenano FM 19 1330 118032
Rocca Santa Maria TE 19 537 118569
Ancarano TE 19 1857 120426
Amandola FM 19 3629 124055
Colli del Tronto AP 19 3668 127723
Arquata del Tronto AP 20 1178 128901

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)
64 Km NW of Montesilvano (53738 inhabitants)
67 Km E of Foligno (57155 inhabitants)
72 Km NW of Pescara (121014 inhabitants)
78 Km NW of Chieti (51815 inhabitants)
78 Km E of Terni (111501 inhabitants)
85 Km S of Ancona (100861 inhabitants)
96 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 1.9 2020-10-15
01:27:44		 42.8548 13.5128 19 2021-02-26
14:56:07		 Bollettino Sismico Italiano INGV 84963841
Reviewed
Rev100 		ML 1.9 2020-10-15
01:27:44		 42.8543 13.4957 21 2020-10-15
01:33:35		 Sala Sismica INGV-Roma 83787921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-15 01:27:44 ± 0.12
Latitude 42.8548 ± 0.0045
Longitude 13.5128 ± 0.0061
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84963841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 509
Semi-minor axis of confidence ellipse (meter) 278
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 282
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.65471
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 83787921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-15 01:33:35

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 84963841
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 15:33:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2020-10-15T01:28:33.09 3.0 undecidable manual Sn -0.37 0
IV.MPAG.EHZ. 2020-10-15T01:28:01.84 3.0 undecidable manual P -0.11 0
IV.CESI.HHZ. 2020-10-15T01:28:01.70 0.3 undecidable manual S 289 52.1034 102 0.52 63
IV.LNSS.HHZ. 2020-10-15T01:28:00.70 0.6 undecidable manual S 234 47.619 103 0.7 40
IV.RM33.EHZ. 2020-10-15T01:28:00.30 0.6 undecidable manual S 212 45.4212 104 0.86 37
IV.MMUR.HNZ. 2020-10-15T01:27:58.73 3.0 undecidable manual P 0.42 0
IV.FDMO.HHZ. 2020-10-15T01:27:58.10 0.6 undecidable manual S 300 40.0266 106 0.06 48
IV.CSP1.EHZ. 2020-10-15T01:27:57.10 0.3 undecidable manual S 317 36.2415 108 0.01 73
IV.T0110.HHZ. 2020-10-15T01:27:56.98 0.3 undecidable manual P 163 72.6717 98 -0.31 65
IV.TRTR.HHE. 2020-10-15T01:27:56.43 0.6 undecidable manual S 99 33.0447 111 0.16 48
IV.GUMA.HHZ. 2020-10-15T01:27:55.00 0.6 undecidable manual S 328 27.1506 116 0.16 48
IV.MC2.EHZ. 2020-10-15T01:27:55.33 0.6 undecidable manual S 284 27.0507 116 0.52 44
IV.SMA1.EHZ. 2020-10-15T01:27:55.50 0.6 undecidable manual S 210 28.749 114 0.28 47
IV.SAP2.EHZ. 2020-10-15T01:27:55.30 0.6 undecidable manual S 341 28.3494 115 0.18 48
IV.CESI.HHZ. 2020-10-15T01:27:54.09 0.3 undecidable manual P 289 52.1034 102 -0.08 71
IV.MNTT.EHZ. 2020-10-15T01:27:54.70 0.6 undecidable manual S 16 23.9538 120 0.63 43
IV.RM33.EHZ. 2020-10-15T01:27:53.24 0.1 negative manual P 212 45.4212 104 0.08 94
IV.LNSS.HHZ. 2020-10-15T01:27:53.50 0.3 undecidable manual P 234 47.619 103 0.02 71
IV.OFFI.HHZ. 2020-10-15T01:27:53.10 0.3 undecidable manual S 58 16.5723 132 0.61 67
IV.MTRA.HNZ. 2020-10-15T01:27:52.00 0.3 undecidable manual S 221 14.4744 137 -0.07 74
IV.MMO1.EHZ. 2020-10-15T01:27:52.10 0.3 undecidable manual S 288 15.873 134 -0.25 72
IV.FDMO.HHZ. 2020-10-15T01:27:52.06 0.3 undecidable manual P 300 40.0266 106 -0.29 69
IV.MF5.EHZ. 2020-10-15T01:27:52.10 0.3 undecidable manual S 344 15.3735 135 -0.14 73
IV.TRTR.HHE. 2020-10-15T01:27:51.68 0.6 undecidable manual P 99 33.0447 111 0.35 46
IV.CSP1.EHZ. 2020-10-15T01:27:51.50 0.1 positive manual P 317 36.2415 108 -0.3 92
IV.SMA1.EHZ. 2020-10-15T01:27:50.68 0.1 positive manual P 210 28.749 114 -0.05 98
IV.TERO.HHZ. 2020-10-15T01:27:50.17 0.3 undecidable manual P 164 26.751 116 -0.28 70
IV.NRCA.HHZ. 2020-10-15T01:27:50.70 0.6 undecidable manual P 266 32.5452 111 -0.56 44
IV.SAP2.EHZ. 2020-10-15T01:27:50.55 0.6 undecidable manual P 341 28.3494 115 -0.12 49
IV.MNTT.EHZ. 2020-10-15T01:27:50.09 0.1 positive manual P 16 23.9538 120 0.03 99
IV.MC2.EHZ. 2020-10-15T01:27:50.29 0.3 undecidable manual P 284 27.0507 116 -0.2 72
IV.GUMA.HHZ. 2020-10-15T01:27:50.36 0.1 positive manual P 328 27.1506 116 -0.14 97
IV.OFFI.HHZ. 2020-10-15T01:27:49.10 0.1 negative manual P 58 16.5723 132 -0.05 100
IV.MMO1.EHZ. 2020-10-15T01:27:48.82 0.3 undecidable manual P 288 15.873 134 -0.25 72
IV.MTRA.HNZ. 2020-10-15T01:27:48.74 0.1 positive manual P 221 14.4744 137 -0.17 98
IV.MF5.EHZ. 2020-10-15T01:27:48.74 0.3 undecidable manual P 344 15.3735 135 -0.27 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MF5.EHE. ML:1.5 0.00023 0.3 AML other m 2020-10-15T01:27:52.32
IV.MTRA.HNE. ML:2.2 0.0010405 0.48 AML other m 2020-10-15T01:27:52.29
IV.MTRA.EHE. ML:2.2 0.0010495 0.48 AML other m 2020-10-15T01:27:52.30
IV.MF5.EHN. ML:1.8 0.00046699999999999997 0.28 AML other m 2020-10-15T01:27:52.20
IV.MTRA.HNN. ML:1.8 0.00039249999999999995 0.22 AML other m 2020-10-15T01:27:52.27
IV.MTRA.EHN. ML:1.8 0.00039200000000000004 0.24 AML other m 2020-10-15T01:27:52.27
IV.MNTT.EHN. ML:2.2 0.000723 1.64 AML other m 2020-10-15T01:27:55.02
IV.TERO.HHE. ML:1.8 0.0003015 1.32 AML other m 2020-10-15T01:27:55.79
IV.TERO.HNE. ML:1.9 0.000398 1.42 AML other m 2020-10-15T01:27:55.13
IV.TERO.HNN. ML:1.9 0.00039600000000000003 1.16 AML other m 2020-10-15T01:27:55.87
IV.GUMA.HHN. ML:1.8 0.0002545 0.46 AML other m 2020-10-15T01:27:55.21
IV.TERO.HHN. ML:1.8 0.00028849999999999997 0.78 AML other m 2020-10-15T01:27:55.87
IV.SMA1.EHN. ML:1.9 0.0003215 0.28 AML other m 2020-10-15T01:27:55.72
IV.SMA1.EHE. ML:1.8 0.0002385 0.96 AML other m 2020-10-15T01:27:55.82
IV.GUMA.HHE. ML:1.8 0.000313 0.18 AML other m 2020-10-15T01:27:56.54
IV.MNTT.EHE. ML:2.1 0.000647 1.4 AML other m 2020-10-15T01:27:56.80
IV.NRCA.HHE. ML:2.2 0.0005555 1.54 AML other m 2020-10-15T01:27:56.06
IV.NRCA.HNE. ML:2.2 0.0005700000000000001 1.54 AML other m 2020-10-15T01:27:56.83
IV.NRCA.HHN. ML:2.1 0.000519 0.14 AML other m 2020-10-15T01:27:56.91
IV.NRCA.HNN. ML:2.1 0.000475 0.08 AML other m 2020-10-15T01:27:56.91
IV.SAP2.EHE. ML:1.7 0.00022600000000000002 1.5 AML other m 2020-10-15T01:27:57.98
IV.GUMA.HNE. ML:1.7 0.0002235 1.42 AML other m 2020-10-15T01:27:57.28
IV.SAP2.EHN. ML:2.2 0.000759 0.88 AML other m 2020-10-15T01:27:57.40
IV.CSP1.EHN. ML:2.0 0.0003155 0.3 AML other m 2020-10-15T01:27:57.31
IV.CSP1.EHE. ML:1.9 0.0002545 0.2 AML other m 2020-10-15T01:27:57.45
IV.FDMO.HHN. ML:1.5 0.0000998 0.32 AML other m 2020-10-15T01:27:58.36
IV.FDMO.HHE. ML:1.5 0.0000882 0.52 AML other m 2020-10-15T01:27:58.26
IV.RM33.EHN. ML:1.6 0.00010350000000000001 0.52 AML other m 2020-10-15T01:28:01.33
IV.RM33.EHE. ML:1.6 0.0001081 0.78 AML other m 2020-10-15T01:28:01.21
IV.CESI.HHE. ML:1.5 0.0000717 1.26 AML other m 2020-10-15T01:28:02.99
IV.CESI.HHN. ML:1.5 0.00007825 1.02 AML other m 2020-10-15T01:28:02.72
IV.LNSS.HHE. ML:1.7 0.0001245 1.2 AML other m 2020-10-15T01:28:02.28
IV.GUMA.HNN. ML:2.5 0.0015719999999999998 0.4 AML other m 2020-10-15T01:28:03.30
IV.LNSS.HHN. ML:1.8 0.00014749999999999998 0.32 AML other m 2020-10-15T01:28:05.37
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