Earthquake with magnitude of ML 1.3 on date 19-08-2021 and time 04:50:06 (Italy) in region 3 km SW Grottammare (AP)

A magnitude ML 1.3 earthquake occured in region: 3 km SW Grottammare (AP), on

  • 19-08-2021 02:50:06 (UTC)
  • 19-08-2021 04:50:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9710, 13.8500 at 24 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Grottammare AP 3 16006 16006
Acquaviva Picena AP 4 3831 19837
San Benedetto del Tronto AP 4 47303 67140
Monteprandone AP 6 12655 79795
Cupra Marittima AP 6 5398 85193
Ripatransone AP 8 4309 89502
Monsampolo del Tronto AP 9 4611 94113
Massignano AP 10 1638 95751
Martinsicuro TE 11 16033 111784
Spinetoli AP 11 7215 118999
Colonnella TE 11 3734 122733
Montefiore dell'Aso AP 12 2123 124856
Campofilone FM 13 1916 126772
Castorano AP 13 2380 129152
Controguerra TE 13 2436 131588
Colli del Tronto AP 13 3668 135256
Cossignano AP 13 978 136234
Offida AP 13 5058 141292
Pedaso FM 14 2800 144092
Carassai AP 15 1100 145192
Corropoli TE 16 5045 150237
Castel di Lama AP 16 8634 158871
Altidona FM 16 3390 162261
Moresco FM 16 598 162859
Alba Adriatica TE 16 12353 175212
Appignano del Tronto AP 17 1785 176997
Monterubbiano FM 17 2230 179227
Lapedona FM 17 1166 180393
Nereto TE 17 5242 185635
Ancarano TE 17 1857 187492
Torano Nuovo TE 17 1611 189103
Castignano AP 19 2796 191899
Petritoli FM 19 2335 194234
Tortoreto TE 19 11542 205776
Sant'Egidio alla Vibrata TE 19 9811 215587
Monte Vidon Combatte FM 20 433 216020
Montalto delle Marche AP 20 2122 218142

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Teramo (54892 inhabitants)
56 Km NW of Montesilvano (53738 inhabitants)
64 Km NW of Pescara (121014 inhabitants)
74 Km NW of Chieti (51815 inhabitants)
77 Km SE of Ancona (100861 inhabitants)
78 Km NE of L'Aquila (69753 inhabitants)
93 Km E of Foligno (57155 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 1.3 2021-08-19
02:50:06
42.9707 13.8498 24 2021-12-29
11:12:21
Bollettino Sismico Italiano INGV 94418361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-19 02:50:06 ± 0.22
Latitude 42.9707 ± 0.0081
Longitude 13.8498 ± 0.0147
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 94418361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1043
Semi-minor axis of confidence ellipse (meter) 596
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) 1040.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 271
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.12501
Epicentral distance of station farthest from the epicenter (degree) 0.65740
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 94418361
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-20 13:07:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MML1.EHZ. 2021-08-19T02:50:28.87 0.6 undecidable manual S 283 72.9714 102 0.28 43
IV.NRCA.HHZ. 2021-08-19T02:50:25.54 0.6 undecidable manual S 256 61.6938 104 -0.12 46
IV.MC2.EHZ. 2021-08-19T02:50:23.70 0.6 undecidable manual S 263 54.1014 107 0 48
IV.CSP1.EHZ. 2021-08-19T02:50:23.54 0.6 undecidable manual S 285 54.0015 107 -0.14 47
IV.TERO.HHZ. 2021-08-19T02:50:21.73 0.6 undecidable manual S 207 43.5231 111 0.71 42
IV.SAP2.EHE. 2021-08-19T02:50:20.37 0.6 undecidable manual S 291 39.1275 114 0.42 45
IV.MMO1.EHZ. 2021-08-19T02:50:20.45 0.6 undecidable manual S 260 43.2234 111 -0.51 44
IV.MTRA.EHE. 2021-08-19T02:50:20.67 0.6 undecidable manual S 237 43.8228 111 -0.44 44
IV.MML1.EHZ. 2021-08-19T02:50:19.09 0.1 undecidable manual P 283 72.9714 102 -0.09 92
IV.MF5.EHZ. 2021-08-19T02:50:18.32 0.6 undecidable manual S 274 31.746 120 0.13 48
IV.NRCA.HHZ. 2021-08-19T02:50:17.21 0.1 undecidable manual P 256 61.6938 104 -0.27 89
IV.CSP1.EHZ. 2021-08-19T02:50:16.34 0.3 undecidable manual P 285 54.0015 107 0 72
IV.MC2.EHZ. 2021-08-19T02:50:16.20 0.1 undecidable manual P 263 54.1014 107 -0.15 93
IV.MNTT.EHZ. 2021-08-19T02:50:16.63 0.6 undecidable manual S 296 22.9548 130 0.36 47
IV.TERO.HHZ. 2021-08-19T02:50:15.23 0.3 undecidable manual P 207 43.5231 111 0.42 68
IV.MTRA.EHE. 2021-08-19T02:50:14.69 0.3 undecidable manual P 237 43.8228 111 -0.17 71
IV.SAP2.EHE. 2021-08-19T02:50:14.55 0.3 undecidable manual P 291 39.1275 114 0.36 68
IV.OFFI.HHZ. 2021-08-19T02:50:14.26 0.6 undecidable manual S 254 13.875 146 -0.37 48
IV.MMO1.EHZ. 2021-08-19T02:50:14.61 0.1 undecidable manual P 260 43.2234 111 -0.16 95
IV.MF5.EHZ. 2021-08-19T02:50:13.35 0.1 undecidable manual P 274 31.746 120 0.18 96
IV.MNTT.EHZ. 2021-08-19T02:50:12.07 0.3 undecidable manual P 296 22.9548 130 0.01 76
IV.OFFI.HHZ. 2021-08-19T02:50:10.97 0.1 undecidable manual P 254 13.875 146 -0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MNTT.EHN. ML:1.6 0.000199722925 0.1808 AML other m 2021-08-19T02:50:20.19
IV.TERO.HHN. ML:1.3 0.00005253550999999999 0.16 AML other m 2021-08-19T02:50:21.85
IV.NRCA.HHE. ML:1.0 0.000021770785 0.12 AML other m 2021-08-19T02:50:26.10
IV.NRCA.HHN. ML:1.1 0.00002748428 0.1408 AML other m 2021-08-19T02:50:25.82
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