Earthquake with magnitude of ML 1.6 on date 28-02-2021 and time 05:29:44 (Italy) in region 6 km W Arquata del Tronto (AP)

A magnitude ML 1.6 earthquake occured in region: 6 km W Arquata del Tronto (AP), on

  • 28-02-2021 04:29:44 (UTC)
  • 28-02-2021 05:29:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7870, 13.2240 at 9 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
Arquata del Tronto AP 6 1178 1178
Accumoli RI 10 667 1845
Norcia PG 11 4957 6802
Montegallo AP 11 523 7325
Castelsantangelo sul Nera MC 13 281 7606
Montemonaco AP 15 604 8210
Acquasanta Terme AP 15 2916 11126
Preci PG 18 724 11850
Amatrice RI 18 2657 14507
Cascia PG 19 3217 17724
Ussita MC 19 444 18168
Cittareale RI 20 482 18650
Visso MC 20 1107 19757
Montefortino FM 20 1178 20935

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
53 Km E of Terni (111501 inhabitants)
77 Km E of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
91 Km NW of Chieti (51815 inhabitants)
95 Km S of Ancona (100861 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km NE of Tivoli (56533 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 2021-02-28
04:29:44
42.7872 13.2243 9 2021-07-12
16:55:01
Bollettino Sismico Italiano INGV 87946181
Reviewed
Rev100
ML 1.6 2021-02-28
04:29:44
42.7913 13.2245 9 2021-02-28
04:38:26
Sala Sismica INGV-Roma 87559941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-28 04:29:44 ± 0.06
Latitude 42.7872 ± 0.0027
Longitude 13.2243 ± 0.0049
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87946181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 381
Semi-minor axis of confidence ellipse (meter) 182
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
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) 59
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.09353
Epicentral distance of station farthest from the epicenter (degree) 0.54949
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 17
Type of magnitude ML
Reference to an origin 87559941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-28 04:38:26

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 17
Type of magnitude ML
Reference to an origin 87946181
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-09 17:18:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-02-28T04:30:04.59 0.3 undecidable manual S 351 60.9945 50 1.21 46
IV.CESX.HHE. 2021-02-28T04:30:02.49 1.0 undecidable manual S 249 55.5999 50 0.53 21
IV.MOMA.HNZ. 2021-02-28T04:30:01.82 0.3 undecidable manual S 272 53.3022 50 0.48 64
IV.MNTT.EHE. 2021-02-28T04:30:00.17 1.0 undecidable manual S 45 42.8238 50 1.61 13
IV.ARRO.EHZ. 2021-02-28T04:29:59.60 3.0 undecidable manual S 238 43.9227 50 0.75 0
IV.PF6.EHN. 2021-02-28T04:29:57.38 0.6 undecidable manual S 356 38.9277 50 -0.13 47
IV.MML1.HNE. 2021-02-28T04:29:57.86 0.3 undecidable manual S 331 41.625 50 -0.36 67
IV.SAP2.EHE. 2021-02-28T04:29:57.92 0.3 undecidable manual S 22 37.1295 50 0.89 56
IV.GUMA.HHZ. 2021-02-28T04:29:56.32 0.3 undecidable manual S 16 31.8459 50 0.71 61
IV.CESI.HHE. 2021-02-28T04:29:56.50 0.3 undecidable manual S 313 35.4423 50 -0.08 72
IV.TERO.HHZ. 2021-02-28T04:29:56.16 0.3 undecidable manual S 120 35.9418 50 -0.54 65
IV.MF5.EHZ. 2021-02-28T04:29:55.29 0.3 undecidable manual S 41 29.3484 107 0.45 67
IV.CSP1.EHZ. 2021-02-28T04:29:55.78 0.3 undecidable manual S 357 33.8439 50 -0.36 68
IV.EL6.EHZ. 2021-02-28T04:29:55.25 0.1 undecidable manual P 351 60.9945 50 -0.02 93
IV.RM33.HNZ. 2021-02-28T04:29:55.43 0.3 undecidable manual S 182 30.8469 106 0.08 73
IT.MTCL.HGZ. 2021-02-28T04:29:54.40 0.3 undecidable manual S 321 29.3484 107 -0.43 68
IV.GAVE.EHN. 2021-02-28T04:29:54.71 0.3 undecidable manual S 249 28.8489 107 0.02 74
IV.LNSS.HHZ. 2021-02-28T04:29:54.10 0.3 undecidable manual S 216 25.3524 110 0.57 65
IV.FDMO.HHZ. 2021-02-28T04:29:54.74 0.3 undecidable manual S 338 29.8479 107 -0.25 70
IV.MNTT.EHE. 2021-02-28T04:29:53.45 1.0 undecidable manual P 45 42.8238 50 0.97 18
IV.MOMA.HNZ. 2021-02-28T04:29:53.14 0.3 undecidable manual P 272 53.3022 50 -0.95 53
IV.FEMA.HNE. 2021-02-28T04:29:53.40 0.3 undecidable manual S 324 24.0537 110 0.3 70
IV.CESX.HHE. 2021-02-28T04:29:53.76 1.0 undecidable manual P 249 55.5999 50 -0.69 20
IV.MML1.HNE. 2021-02-28T04:29:52.19 0.1 undecidable manual P 331 41.625 50 -0.1 95
IV.ARRO.EHZ. 2021-02-28T04:29:52.67 0.1 undecidable manual P 238 43.9227 50 0.02 96
IV.SMA1.EHZ. 2021-02-28T04:29:51.77 1.0 undecidable manual S 153 19.5693 115 0.1 25
IV.PF6.EHN. 2021-02-28T04:29:51.54 0.1 undecidable manual P 356 38.9277 50 -0.34 91
IV.T1299.EHZ. 2021-02-28T04:29:51.49 1.0 undecidable manual S 164 17.5713 117 0.44 23
IV.CESI.HHE. 2021-02-28T04:29:51.37 0.1 undecidable manual P 313 35.4423 50 0.03 97
IV.SAP2.EHE. 2021-02-28T04:29:51.55 0.3 undecidable manual P 22 37.1295 50 -0.05 72
IV.TERO.HHZ. 2021-02-28T04:29:50.99 0.1 undecidable manual P 120 35.9418 50 -0.42 90
IV.RM33.HNZ. 2021-02-28T04:29:50.50 0.1 undecidable manual P 182 30.8469 106 -0.13 96
IV.MC2.EHZ. 2021-02-28T04:29:50.04 0.3 undecidable manual S 348 14.0748 123 0.05 75
IV.CAMP.HHE. 2021-02-28T04:29:50.42 1.0 undecidable manual P 152 31.746 50 -0.34 23
IV.MF5.EHZ. 2021-02-28T04:29:50.41 0.1 undecidable manual P 41 29.3484 107 0.07 97
IT.MTCL.HGZ. 2021-02-28T04:29:50.12 0.1 undecidable manual P 321 29.3484 107 -0.22 95
IV.GAVE.EHN. 2021-02-28T04:29:50.31 0.1 undecidable manual P 249 28.8489 107 0.06 98
IV.CSP1.EHZ. 2021-02-28T04:29:50.80 0.1 undecidable manual P 357 33.8439 50 -0.29 92
IV.GUMA.HHZ. 2021-02-28T04:29:50.82 0.1 undecidable manual P 16 31.8459 50 0.03 98
IV.FDMO.HHZ. 2021-02-28T04:29:50.15 0.1 undecidable manual P 338 29.8479 107 -0.28 93
IV.MMO1.EHZ. 2021-02-28T04:29:49.91 0.3 undecidable manual S 34 14.9739 121 -0.34 71
IV.FEMA.HNE. 2021-02-28T04:29:49.46 0.6 undecidable manual P 324 24.0537 110 0.13 49
IV.MTRA.EHZ. 2021-02-28T04:29:49.83 0.3 undecidable manual S 104 14.3745 122 -0.26 72
IV.LNSS.HHZ. 2021-02-28T04:29:49.62 0.1 undecidable manual P 216 25.3524 110 0.04 99
IV.T1299.EHZ. 2021-02-28T04:29:48.44 0.1 undecidable manual P 164 17.5713 117 0.29 95
IV.SMA1.EHZ. 2021-02-28T04:29:48.48 0.1 undecidable manual P 153 19.5693 115 -0.03 100
IV.NRCA.HHZ. 2021-02-28T04:29:48.99 0.3 undecidable manual S 300 10.3785 131 0.05 76
IV.NRCA.HHZ. 2021-02-28T04:29:47.06 0.1 undecidable manual P 300 10.3785 131 0.12 100
IV.MMO1.EHZ. 2021-02-28T04:29:47.52 0.1 undecidable manual P 34 14.9739 121 -0.17 98
IV.MC2.EHZ. 2021-02-28T04:29:47.66 0.1 undecidable manual P 348 14.0748 123 0.12 99
IV.MTRA.EHZ. 2021-02-28T04:29:47.80 0.1 undecidable manual P 104 14.3745 122 0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.6 0.000586 0.68 AML other m 2021-02-28T04:29:49.37
IV.NRCA.HHN. ML:1.7 0.0006295 0.3 AML other m 2021-02-28T04:29:49.31
IV.NRCA.HNN. ML:1.6 0.0005163983 0.08 AML other m 2021-02-28T04:29:49.46
IV.MTRA.EHN. ML:1.7 0.0004755 0.36 AML other m 2021-02-28T04:29:50.49
IV.MTRA.EHE. ML:1.6 0.0003804999999999999 0.24 AML other m 2021-02-28T04:29:50.87
IV.MTRA.HNE. ML:1.6 0.000393 0.24 AML other m 2021-02-28T04:29:50.87
IV.MTRA.HNN. ML:1.7 0.000571 0.98 AML other m 2021-02-28T04:29:50.48
IV.LNSS.HHE. ML:1.4 0.00015000000000000001 0.14 AML other m 2021-02-28T04:29:54.84
IV.FDMO.HHE. ML:1.0 0.00005378285500000001 0.24 AML other m 2021-02-28T04:29:55.18
IV.MF5.EHN. ML:1.2 0.000071739208 1.1392 AML other m 2021-02-28T04:29:55.07
IV.LNSS.HHN. ML:1.3 0.00010805000000000001 0.32 AML other m 2021-02-28T04:29:55.12
IV.FDMO.HHN. ML:1.0 0.00005725176 0.24 AML other m 2021-02-28T04:29:55.60
IV.CSP1.EHE. ML:1.6 0.00017274984999999997 1.3184 AML other m 2021-02-28T04:29:56.69
IV.CSP1.EHN. ML:1.7 0.000200722155 0.32 AML other m 2021-02-28T04:29:56.60
IV.GUMA.HHN. ML:1.6 0.00018980353 0.3616 AML other m 2021-02-28T04:29:57.04
IV.GUMA.HNE. ML:1.8 0.00029740645 1.7216 AML other m 2021-02-28T04:29:57.08
IV.GUMA.HHE. ML:1.9 0.0003980394 1.6416 AML other m 2021-02-28T04:29:57.11
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