Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 22-08-2020 and time 10:52:33 (UTC) in region 4 km N Acquasanta Terme (AP)

A magnitude ML 2.5 earthquake occured in region: 4 km N Acquasanta Terme (AP), on

  • 22-08-2020 10:52:33 (UTC)
  • 22-08-2020 12:52:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8080, 13.4160 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
Acquasanta Terme AP 4 2916 2916
Montegallo AP 8 523 3439
Roccafluvione AP 8 2010 5449
Arquata del Tronto AP 10 1178 6627
Venarotta AP 10 2066 8693
Valle Castellana TE 10 977 9670
Palmiano AP 11 196 9866
Montemonaco AP 13 604 10470
Ascoli Piceno AP 14 49407 59877
Montefortino FM 16 1178 61055
Rocca Santa Maria TE 16 537 61592
Comunanza AP 17 3166 64758
Folignano AP 18 9241 73999
Force AP 18 1354 75353
Accumoli RI 19 667 76020
Amandola FM 20 3629 79649

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of Teramo (54892 inhabitants)
51 Km N of L'Aquila (69753 inhabitants)
60 Km E of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
69 Km E of Terni (111501 inhabitants)
76 Km NW of Pescara (121014 inhabitants)
80 Km NW of Chieti (51815 inhabitants)
90 Km E of Perugia (166134 inhabitants)
90 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 2.5 2020-08-22
10:52:33		 42.808 13.4163 20 2020-11-19
12:37:07		 Bollettino Sismico Italiano INGV 84784161
Reviewed
Rev100 		ML 2.5 2020-08-22
10:52:33		 42.8068 13.404 19 2020-08-22
11:03:48		 Sala Sismica INGV-Roma 82229561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-22 10:52:33 ± 0.07
Latitude 42.8080 ± 0.0027
Longitude 13.4163 ± 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 84784161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 379
Semi-minor axis of confidence ellipse (meter) 48
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
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 65
Number of defining phases 65
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) 0.05306
Epicentral distance of station farthest from the epicenter (degree) 0.97037
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 36
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 84784161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-16 23:39:20

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 53
Type of magnitude ML
Reference to an origin 82229561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-22 11:03:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2020-08-22T10:52:56.65 0.6 undecidable manual S 304 75.6687 98 0.71 37
IV.MOMA.HHZ. 2020-08-22T10:52:55.29 0.6 undecidable manual S 270 68.8755 99 1.14 31
IV.EL6.EHZ. 2020-08-22T10:52:53.42 0.6 undecidable manual S 336 63.1923 100 0.76 37
IV.FIAM.HHZ. 2020-08-22T10:52:53.58 0.6 undecidable manual S 202 64.6908 99 0.53 41
IV.ARRO.EHZ. 2020-08-22T10:52:52.30 0.6 undecidable manual S 245 58.7967 101 0.8 37
IV.MPAG.EHZ. 2020-08-22T10:52:51.31 0.3 undecidable manual P 330 105.4167 95 0.44 58
IV.VCEL.EHZ. 2020-08-22T10:52:51.78 0.6 undecidable manual S 143 57.498 101 0.63 41
IV.PIEI.HHZ. 2020-08-22T10:52:51.11 0.3 undecidable manual P 319 107.7144 95 -0.1 63
IV.MML1.HNE. 2020-08-22T10:52:49.27 0.6 undecidable manual S 313 49.5171 103 0.19 46
IV.MDAR.HNN. 2020-08-22T10:52:49.02 0.3 undecidable manual S 333 48.1185 104 0.31 67
IV.MURB.HHZ. 2020-08-22T10:52:48.26 0.3 undecidable manual P 305 88.1451 97 0.04 65
IV.GAVE.EHN. 2020-08-22T10:52:48.42 0.6 undecidable manual S 253 44.4222 105 0.67 40
IV.CESI.HHE. 2020-08-22T10:52:48.73 0.6 undecidable manual S 298 47.0196 104 0.32 45
IV.GIGS.HHE. 2020-08-22T10:52:46.89 0.3 undecidable manual S 162 41.4252 106 -0.08 71
IT.MTCL.HGZ. 2020-08-22T10:52:46.48 0.6 undecidable manual S 301 39.627 107 -0.05 48
IV.RM33.EHZ. 2020-08-22T10:52:46.16 0.3 undecidable manual S 206 37.0296 109 0.29 69
IV.PF6.EHN. 2020-08-22T10:52:46.83 0.3 undecidable manual S 334 40.8258 107 0.01 72
IV.LNSS.HHZ. 2020-08-22T10:52:46.68 0.6 undecidable manual S 234 38.1285 108 0.52 43
IV.ATCC.EHZ. 2020-08-22T10:52:46.12 0.1 undecidable manual P 304 75.6687 98 -0.18 88
IV.CSP1.EHZ. 2020-08-22T10:52:45.50 0.3 undecidable manual S 331 35.8419 109 -0.07 72
IV.FEMA.HNE. 2020-08-22T10:52:45.49 0.6 undecidable manual S 300 34.3434 111 0.3 46
IV.FDMO.HHZ. 2020-08-22T10:52:45.49 0.6 undecidable manual S 314 36.8298 109 -0.33 46
IV.MOMA.HHZ. 2020-08-22T10:52:45.16 0.1 undecidable manual P 270 68.8755 99 -0.11 91
IV.GUMA.HHZ. 2020-08-22T10:52:44.26 0.6 undecidable manual S 347 29.0487 115 0.38 46
IV.EL6.EHZ. 2020-08-22T10:52:44.32 0.3 undecidable manual P 336 63.1923 100 -0.09 69
IV.SAP2.EHZ. 2020-08-22T10:52:44.93 0.6 undecidable manual S 358 32.0457 112 0.31 46
IV.FIAM.HHZ. 2020-08-22T10:52:44.42 0.3 undecidable manual P 202 64.6908 99 -0.21 67
IV.MNTT.EHZ. 2020-08-22T10:52:44.84 0.6 undecidable manual S 27 31.746 113 0.3 46
IV.ASSB.HHZ. 2020-08-22T10:52:44.71 0.1 positive manual P 293 66.7776 99 -0.25 88
IV.OFFI.HHZ. 2020-08-22T10:52:43.58 0.6 undecidable manual S 57 26.0517 118 0.41 46
IV.ARRO.EHZ. 2020-08-22T10:52:43.63 0.1 undecidable manual P 245 58.7967 101 -0.11 92
IV.FAGN.HHZ. 2020-08-22T10:52:43.35 0.3 undecidable manual P 167 61.6938 100 -0.83 55
IV.VCEL.EHZ. 2020-08-22T10:52:43.44 0.1 undecidable manual P 143 57.498 101 -0.1 92
IV.MC2.EHZ. 2020-08-22T10:52:42.17 0.6 undecidable manual S 302 21.7671 124 -0.02 50
IV.T1299.HNN. 2020-08-22T10:52:42.63 0.3 undecidable manual S 210 22.1556 124 0.35 70
IV.MF5.EHZ. 2020-08-22T10:52:42.06 0.3 undecidable manual S 10 20.2686 127 0.19 73
IV.NRCA.HNZ. 2020-08-22T10:52:42.80 0.6 undecidable manual S 277 24.753 120 -0.06 49
IV.MML1.HNE. 2020-08-22T10:52:42.10 0.1 undecidable manual P 313 49.5171 103 -0.24 91
IV.SMA1.EHZ. 2020-08-22T10:52:41.85 0.3 undecidable manual S 199 20.7681 126 -0.12 73
IV.CESI.HHE. 2020-08-22T10:52:41.74 0.1 undecidable manual P 298 47.0196 104 -0.22 92
IV.MDAR.HNN. 2020-08-22T10:52:41.65 0.3 undecidable manual P 333 48.1185 104 -0.48 65
IV.TRTR.HHZ. 2020-08-22T10:52:41.68 0.3 undecidable manual P 90 40.5261 107 0.69 61
IV.GAVE.EHN. 2020-08-22T10:52:41.46 0.1 undecidable manual P 253 44.4222 105 -0.12 94
IV.LNSS.HHZ. 2020-08-22T10:52:40.63 0.1 positive manual P 234 38.1285 108 -0.02 97
IV.CSP1.EHZ. 2020-08-22T10:52:40.04 0.1 undecidable manual P 331 35.8419 109 -0.28 93
IV.GIGS.HHE. 2020-08-22T10:52:40.72 0.1 undecidable manual P 162 41.4252 106 -0.41 89
IT.MTCL.HGZ. 2020-08-22T10:52:40.53 0.1 undecidable manual P 301 39.627 107 -0.34 91
IV.FDMO.HHZ. 2020-08-22T10:52:40.12 0.1 undecidable manual P 314 36.8298 109 -0.34 91
IV.MNTP.HNZ. 2020-08-22T10:52:40.41 0.3 undecidable manual P 7 36.8298 109 -0.04 73
IV.RM33.EHZ. 2020-08-22T10:52:40.42 0.1 undecidable manual P 206 37.0296 109 -0.06 96
IV.PF6.EHN. 2020-08-22T10:52:40.64 0.1 undecidable manual P 334 40.8258 107 -0.4 90
IV.MNTT.EHZ. 2020-08-22T10:52:39.92 0.1 undecidable manual P 27 31.746 113 0.2 94
IV.MTRA.HNZ. 2020-08-22T10:52:39.21 0.3 undecidable manual S 196 5.8941 161 -0.32 71
IV.OFFI.HHZ. 2020-08-22T10:52:39.24 0.1 undecidable manual P 57 26.0517 118 0.31 93
IV.FEMA.HNE. 2020-08-22T10:52:39.97 0.1 undecidable manual P 300 34.3434 111 -0.13 96
IV.MMO1.EHZ. 2020-08-22T10:52:39.94 0.3 undecidable manual S 324 12.4764 142 -0.43 69
IV.GUMA.HHZ. 2020-08-22T10:52:39.27 0.1 undecidable manual P 347 29.0487 115 -0.07 98
IV.SAP2.EHZ. 2020-08-22T10:52:39.82 0.1 undecidable manual P 358 32.0457 112 0.05 97
IV.MF5.EHZ. 2020-08-22T10:52:38.15 0.1 undecidable manual P 10 20.2686 127 -0.03 100
IV.NRCA.HNZ. 2020-08-22T10:52:38.60 0.1 undecidable manual P 277 24.753 120 -0.15 97
IV.SMA1.EHZ. 2020-08-22T10:52:38.24 0.1 undecidable manual P 199 20.7681 126 0 100
IV.MC2.EHZ. 2020-08-22T10:52:38.32 0.1 undecidable manual P 302 21.7671 124 -0.04 99
IV.T1299.HNN. 2020-08-22T10:52:38.56 0.1 undecidable manual P 210 22.1556 124 0.14 97
IV.MMO1.EHZ. 2020-08-22T10:52:37.07 0.1 undecidable manual P 324 12.4764 142 -0.25 96
IV.MTRA.HNZ. 2020-08-22T10:52:36.70 0.1 undecidable manual P 196 5.8941 161 -0.13 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:2.9 0.0068449999999999995 0.16 AML other m 2020-08-22T10:52:39.32
IV.MTRA.EHN. ML:2.9 0.006935 0.14 AML other m 2020-08-22T10:52:39.33
IV.MTRA.EHE. ML:2.7 0.00439 0.16 AML other m 2020-08-22T10:52:39.42
IV.MTRA.HNE. ML:2.7 0.00437 0.08 AML other m 2020-08-22T10:52:39.42
IV.MF5.EHE. ML:2.5 0.0019100000000000002 0.3 AML other m 2020-08-22T10:52:42.25
IV.MF5.EHN. ML:2.7 0.00292 0.3 AML other m 2020-08-22T10:52:42.27
IV.SMA1.EHN. ML:3.0 0.005585 0.16 AML other m 2020-08-22T10:52:42.45
IV.SMA1.EHE. ML:3.1 0.0067599999999999995 0.26 AML other m 2020-08-22T10:52:42.38
IV.NRCA.HNN. ML:3.2 0.008695 0.12 AML other m 2020-08-22T10:52:43.11
IV.NRCA.HHN. ML:3.3 0.009495 0.12 AML other m 2020-08-22T10:52:43.11
IV.NRCA.HNE. ML:2.8 0.002745 1.24 AML other m 2020-08-22T10:52:44.64
IV.NRCA.HHE. ML:2.8 0.00302 0.16 AML other m 2020-08-22T10:52:44.10
IV.GUMA.HNE. ML:2.9 0.0035 0.28 AML other m 2020-08-22T10:52:44.41
IV.GUMA.HHE. ML:3.2 0.006279999999999999 0.2 AML other m 2020-08-22T10:52:44.52
IV.GUMA.HHN. ML:2.8 0.0027750000000000006 0.74 AML other m 2020-08-22T10:52:44.51
IV.GUMA.HNN. ML:3.0 0.004505 0.18 AML other m 2020-08-22T10:52:44.42
IV.FDMO.HHE. ML:2.5 0.0009975000000000001 1.42 AML other m 2020-08-22T10:52:45.14
IV.CSP1.EHE. ML:2.6 0.001265 1.76 AML other m 2020-08-22T10:52:45.88
IV.FDMO.HHN. ML:2.6 0.0014849999999999998 1.72 AML other m 2020-08-22T10:52:45.10
IV.CSP1.EHN. ML:2.2 0.000605 0.32 AML other m 2020-08-22T10:52:46.06
IV.RM33.HNN. ML:2.4 0.0008685 1.12 AML other m 2020-08-22T10:52:46.43
IV.SAP2.EHE. ML:2.1 0.0004975 0.4 AML other m 2020-08-22T10:52:46.45
IV.RM33.EHN. ML:2.4 0.000853 0.52 AML other m 2020-08-22T10:52:46.58
IV.RM33.HNE. ML:2.6 0.0012929999999999999 0.18 AML other m 2020-08-22T10:52:46.65
IV.RM33.EHE. ML:2.6 0.0012825 0.18 AML other m 2020-08-22T10:52:46.65
IV.LNSS.HHN. ML:2.7 0.00172 0.16 AML other m 2020-08-22T10:52:47.25
IV.MNTT.EHN. ML:2.4 0.0009765 0.18 AML other m 2020-08-22T10:52:47.63
IV.MNTT.EHE. ML:2.4 0.0009130000000000001 0.56 AML other m 2020-08-22T10:52:47.67
IV.LNSS.HHE. ML:2.6 0.0013050000000000002 0.14 AML other m 2020-08-22T10:52:48.31
IV.OFFI.HHN. ML:2.4 0.001139 0.54 AML other m 2020-08-22T10:52:48.27
IV.SAP2.EHN. ML:2.8 0.002705 0.5 AML other m 2020-08-22T10:52:49.45
IV.OFFI.HHE. ML:2.4 0.0012275 1.6 AML other m 2020-08-22T10:52:49.99
IV.ARRO.EHE. ML:2.2 0.0003205 0.22 AML other m 2020-08-22T10:52:52.73
IV.ARRO.EHN. ML:2.2 0.0003055 0.92 AML other m 2020-08-22T10:52:53.85
IV.TRTR.HHE. ML:2.4 0.0007275000000000001 0.46 AML other m 2020-08-22T10:52:53.23
IV.FIAM.HHN. ML:1.8 0.0001 0.24 AML other m 2020-08-22T10:52:53.77
IV.FIAM.HHE. ML:1.8 0.00011989999999999999 1.4 AML other m 2020-08-22T10:52:54.12
IV.ASSB.HHE. ML:2.2 0.00023799999999999998 1.02 AML other m 2020-08-22T10:52:55.29
IV.MOMA.HHE. ML:2.4 0.00043100000000000007 0.22 AML other m 2020-08-22T10:52:55.90
IV.ASSB.HHN. ML:2.1 0.00021700000000000002 0.24 AML other m 2020-08-22T10:52:55.99
IV.FAGN.HHN. ML:2.3 0.00035499999999999996 0.36 AML other m 2020-08-22T10:52:56.42
IV.FAGN.HHE. ML:2.3 0.000407 0.28 AML other m 2020-08-22T10:52:56.85
IV.ATCC.EHE. ML:2.1 0.000192 0.3 AML other m 2020-08-22T10:52:57.05
IV.TRTR.HHN. ML:2.4 0.0007605 0.4 AML other m 2020-08-22T10:52:57.67
IV.VCEL.EHN. ML:2.0 0.0002045 1.72 AML other m 2020-08-22T10:52:57.01
IV.VCEL.EHE. ML:2.0 0.00023 1.5 AML other m 2020-08-22T10:52:57.91
IV.MOMA.HHN. ML:2.2 0.000247 1.38 AML other m 2020-08-22T10:52:59.90
IV.ATCC.EHN. ML:2.0 0.0001485 1.66 AML other m 2020-08-22T10:53:04.11
IV.MURB.HHN. ML:2.4 0.0003285 0.66 AML other m 2020-08-22T10:53:04.40
IV.MURB.HHE. ML:2.5 0.00039549999999999996 0.32 AML other m 2020-08-22T10:53:05.08
IV.MPAG.EHE. ML:1.9 0.0000633 0.28 AML other m 2020-08-22T10:53:07.04
IV.MPAG.EHN. ML:1.8 0.00005555 0.64 AML other m 2020-08-22T10:53:09.51
IV.PIEI.HHE. ML:1.8 0.00004985 0.3 AML other m 2020-08-22T10:53:11.07
IV.PIEI.HHN. ML:1.8 0.00005255 0.38 AML other m 2020-08-22T10:53:11.37
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
Waveforms Seismic signals in miniseed + resp format Download