Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-09-2020 and time 14:06:00 (Italy) in region 4 km NW Acquasanta Terme (AP)

A magnitude ML 1.6 earthquake occured in region: 4 km NW Acquasanta Terme (AP), on

  • 28-09-2020 12:06:00 (UTC)
  • 28-09-2020 14:06:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7980, 13.3740 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Acquasanta Terme AP 4 2916 2916
Montegallo AP 6 523 3439
Arquata del Tronto AP 7 1178 4617
Roccafluvione AP 11 2010 6627
Montemonaco AP 12 604 7231
Valle Castellana TE 12 977 8208
Palmiano AP 13 196 8404
Venarotta AP 14 2066 10470
Accumoli RI 15 667 11137
Montefortino FM 16 1178 12315
Rocca Santa Maria TE 18 537 12852
Ascoli Piceno AP 18 49407 62259
Comunanza AP 18 3166 65425
Amatrice RI 20 2657 68082

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Teramo (54892 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
57 Km E of Foligno (57155 inhabitants)
65 Km E of Terni (111501 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
78 Km W of Pescara (121014 inhabitants)
82 Km NW of Chieti (51815 inhabitants)
87 Km E of Perugia (166134 inhabitants)
92 Km S of Ancona (100861 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 1.6 2020-09-28
12:06:00		 42.7982 13.3745 21 2021-02-26
14:56:06		 Bollettino Sismico Italiano INGV 84846291
Reviewed
Rev100 		ML 1.7 2020-09-28
12:05:59		 42.807 13.3872 21 2020-09-28
12:15:02		 Sala Sismica INGV-Roma 83330941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-28 12:06:00 ± 0.1
Latitude 42.7982 ± 0.0027
Longitude 13.3745 ± 0.0061
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 84846291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 499
Semi-minor axis of confidence ellipse (meter) 61
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.56657
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 83330941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-28 12:15:02

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 84846291
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-19 12:15:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.LRNO.HNZ. 2020-09-28T12:06:45.76 3.0 undecidable manual Sn 0.07 0
IV.EL6.EHZ. 2020-09-28T12:06:20.10 0.3 undecidable manual S 340 62.8926 101 0.58 60
IV.MML1.HNE. 2020-09-28T12:06:15.60 0.6 undecidable manual S 317 47.9187 105 0 47
IV.CESI.HHE. 2020-09-28T12:06:15.10 0.3 undecidable manual S 301 44.5221 107 0.35 67
IV.GAVE.EHZ. 2020-09-28T12:06:14.30 0.3 undecidable manual S 253 40.8258 108 0.49 65
IV.PF6.EHN. 2020-09-28T12:06:13.60 0.3 undecidable manual S 339 40.4262 109 -0.1 70
IV.GIGS.HHN. 2020-09-28T12:06:13.80 0.6 undecidable manual S 157 41.5251 108 -0.18 46
IV.CSP1.EHZ. 2020-09-28T12:06:12.20 0.3 undecidable manual S 337 35.3424 112 -0.23 69
IV.LNSS.HHZ. 2020-09-28T12:06:12.90 0.3 undecidable manual S 232 34.8429 112 0.61 64
IV.RM33.EHZ. 2020-09-28T12:06:12.80 0.3 undecidable manual S 202 34.6431 112 0.55 65
IV.OFFI.HHZ. 2020-09-28T12:06:12.10 0.3 undecidable manual S 59 29.5482 117 1.1 50
IV.GUMA.HHZ. 2020-09-28T12:06:11.30 0.1 undecidable manual S 354 29.5482 117 0.29 92
IV.FDMO.HHZ. 2020-09-28T12:06:11.90 0.6 undecidable manual S 319 35.2425 112 -0.51 43
IV.TERO.HHZ. 2020-09-28T12:06:10.50 0.3 undecidable manual S 136 26.9508 120 0.09 72
IV.EL6.EHZ. 2020-09-28T12:06:10.96 0.3 undecidable manual P 340 62.8926 101 -0.32 64
IV.CAMP.HHE. 2020-09-28T12:06:10.70 0.6 undecidable manual S 174 29.2485 117 -0.24 46
IV.NRCA.HHZ. 2020-09-28T12:06:09.10 0.3 undecidable manual S 281 21.5673 127 -0.09 72
IV.MF5.EHZ. 2020-09-28T12:06:09.60 0.1 undecidable manual S 18 22.1556 126 0.28 93
IV.MC2.EHZ. 2020-09-28T12:06:08.80 0.3 undecidable manual S 310 19.6692 130 0 74
IV.CESI.HHE. 2020-09-28T12:06:08.47 0.3 undecidable manual P 301 44.5221 107 -0.05 70
IV.MML1.HNE. 2020-09-28T12:06:08.72 0.3 undecidable manual P 317 47.9187 105 -0.3 66
IV.SMA1.EHZ. 2020-09-28T12:06:08.60 0.1 undecidable manual S 190 18.87 131 -0.04 98
IV.GAVE.EHZ. 2020-09-28T12:06:08.04 0.3 undecidable manual P 253 40.8258 108 0.06 71
IV.GIGS.HHN. 2020-09-28T12:06:07.76 0.1 undecidable manual P 157 41.5251 108 -0.32 89
IV.LNSS.HHZ. 2020-09-28T12:06:07.23 0.1 undecidable manual P 232 34.8429 112 0.13 95
IV.MMO1.EHZ. 2020-09-28T12:06:07.00 0.1 undecidable manual S 341 11.877 146 -0.4 92
IV.RM33.EHZ. 2020-09-28T12:06:07.19 0.1 undecidable manual P 202 34.6431 112 0.11 95
IV.PF6.EHN. 2020-09-28T12:06:07.59 0.1 undecidable manual P 339 40.4262 109 -0.32 89
IV.CSP1.EHZ. 2020-09-28T12:06:06.90 0.1 undecidable manual P 337 35.3424 112 -0.29 91
IV.CAMP.HHE. 2020-09-28T12:06:06.28 0.1 undecidable manual P 174 29.2485 117 -0.04 96
IV.FDMO.HHZ. 2020-09-28T12:06:06.82 0.1 undecidable manual P 319 35.2425 112 -0.35 89
IV.OFFI.HHZ. 2020-09-28T12:06:06.71 0.3 undecidable manual P 59 29.5482 117 0.35 67
IV.GUMA.HHZ. 2020-09-28T12:06:06.29 0.1 undecidable manual P 354 29.5482 117 -0.07 96
IV.MTRA.EHZ. 2020-09-28T12:06:06.40 0.3 undecidable manual S 159 4.8951 165 -0.22 72
IV.SMA1.EHZ. 2020-09-28T12:06:05.08 0.1 undecidable manual P 190 18.87 131 0.08 98
IV.MF5.EHZ. 2020-09-28T12:06:05.39 0.1 undecidable manual P 18 22.1556 126 0 98
IV.MC2.EHZ. 2020-09-28T12:06:05.09 0.1 undecidable manual P 310 19.6692 130 0 99
IV.T1299.EHZ. 2020-09-28T12:06:05.29 0.3 undecidable manual P 203 19.6692 130 0.2 72
IV.TERO.HHZ. 2020-09-28T12:06:05.80 0.1 undecidable manual P 136 26.9508 120 -0.22 94
IV.NRCA.HHZ. 2020-09-28T12:06:05.21 0.1 undecidable manual P 281 21.5673 127 -0.1 96
IV.MMO1.EHZ. 2020-09-28T12:06:04.06 0.1 undecidable manual P 341 11.877 146 -0.22 96
IV.MTRA.EHZ. 2020-09-28T12:06:03.76 0.1 undecidable manual P 159 4.8951 165 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNE. ML:0.0 0.00048841345 0.0896 AML other m 2020-09-28T12:06:06.98
IV.MTRA.EHN. ML:0.0 0.0005998002 0.1024 AML other m 2020-09-28T12:06:06.64
IV.MTRA.HNN. ML:0.0 0.00057460975 0.1024 AML other m 2020-09-28T12:06:06.64
IV.SMA1.EHN. ML:0.0 0.00010852420000000001 0.1152 AML other m 2020-09-28T12:06:09.08
IV.SMA1.EHE. ML:0.0 0.00009985387500000001 0.1408 AML other m 2020-09-28T12:06:09.21
IV.NRCA.HHE. ML:0.0 0.00049191675 0.16 AML other m 2020-09-28T12:06:09.37
IV.NRCA.HNE. ML:0.0 0.000504379 0.1344 AML other m 2020-09-28T12:06:09.38
IV.NRCA.HHN. ML:0.0 0.00044314215 0.1216 AML other m 2020-09-28T12:06:09.46
IV.NRCA.HNN. ML:0.0 0.0003874497 0.1344 AML other m 2020-09-28T12:06:09.40
IV.FDMO.HHE. ML:0.0 0.00004047196 0.1984 AML other m 2020-09-28T12:06:12.50
IV.FDMO.HHN. ML:0.0 0.000077252615 0.224 AML other m 2020-09-28T12:06:12.51
IV.CSP1.EHE. ML:0.0 0.000280910815 0.3008 AML other m 2020-09-28T12:06:12.86
IV.CSP1.EHN. ML:0.0 0.00029467955 0.2816 AML other m 2020-09-28T12:06:12.65
IV.RM33.HNN. ML:1.4 0.00008294823499999999 1.7824 AML other m 2020-09-28T12:06:13.90
IV.RM33.EHN. ML:0.0 0.00009063195 1.7568 AML other m 2020-09-28T12:06:13.90
IV.RM33.EHE. ML:0.0 0.00007597465 0.2816 AML other m 2020-09-28T12:06:13.04
IV.LNSS.HHE. ML:0.0 0.00008116974999999999 0.1344 AML other m 2020-09-28T12:06:13.62
IV.LNSS.HHN. ML:0.0 0.00010383053000000001 0.1408 AML other m 2020-09-28T12:06:13.68
IV.MTRA.EHE. ML:1.9 0.00069024265 0.2176 AML other m 2020-09-28T12:06:06.71
IV.MF5.EHE. ML:1.5 0.00016781585999999998 0.6208 AML other m 2020-09-28T12:06:10.03
IV.MF5.EHN. ML:1.6 0.00019679028500000002 0.16 AML other m 2020-09-28T12:06:09.74
IV.TERO.HNE. ML:1.2 0.00006986091 0.0576 AML other m 2020-09-28T12:06:11.57
IV.TERO.HNN. ML:1.2 0.00006726415499999999 0.2816 AML other m 2020-09-28T12:06:10.65
IV.TERO.HHN. ML:1.1 0.000052604558 0.0768 AML other m 2020-09-28T12:06:10.00
IV.TERO.HHE. ML:1.2 0.00007297382499999999 0.064 AML other m 2020-09-28T12:06:11.60
IV.GAVE.EHN. ML:1.6 0.0001205323 0.224 AML other m 2020-09-28T12:06:15.02
IV.GAVE.HNE. ML:1.7 0.00014128598000000001 0.2816 AML other m 2020-09-28T12:06:16.41
IV.GAVE.EHE. ML:1.6 0.00011162026 0.2816 AML other m 2020-09-28T12:06:16.42
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