Earthquake with magnitude of ML 1.5 on date 28-08-2021 and time 19:42:48 (UTC) in region 7 km E Antrodoco (RI)

A magnitude ML 1.5 earthquake occured in region: 7 km E Antrodoco (RI), on

  • 28-08-2021 19:42:48 (UTC)
  • 28-08-2021 21:42:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.398, 13.166 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Antrodoco RI 7 2588 2588
Scoppito AQ 8 3727 6315
Cagnano Amiterno AQ 9 1369 7684
Borgo Velino RI 9 972 8656
Micigliano RI 11 127 8783
Castel Sant'Angelo RI 11 1308 10091
Barete AQ 11 737 10828
Pizzoli AQ 12 4326 15154
Borbona RI 13 617 15771
Petrella Salto RI 14 1197 16968
Fiamignano RI 15 1413 18381
Posta RI 15 694 19075
Montereale AQ 16 2581 21656
Tornimparte AQ 16 3187 24843
Concerviano RI 17 291 25134
Capitignano AQ 18 665 25799
Cittaducale RI 18 6828 32627
Lucoli AQ 18 1011 33638
L'Aquila AQ 20 69753 103391

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of L'Aquila (69753 inhabitants)
46 Km E of Terni (111501 inhabitants)
53 Km SW of Teramo (54892 inhabitants)
57 Km NE of Tivoli (56533 inhabitants)
57 Km NE of Guidonia Montecelio (88673 inhabitants)
73 Km SE of Foligno (57155 inhabitants)
79 Km NE of Roma (2864731 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
83 Km W of Chieti (51815 inhabitants)
85 Km NE of Velletri (53303 inhabitants)
86 Km W of Pescara (121014 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
98 Km NE of Pomezia (62966 inhabitants)
99 Km NE of Aprilia (73446 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.5 2021-08-28
19:42:48
42.3975 13.1663 11 2021-08-28
19:53:26
Sala Sismica INGV-Roma 94763651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-28 19:42:48 ± 0.08
Latitude 42.3975 ± 0.0054
Longitude 13.1663 ± 0.0073
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94763651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 590
Semi-minor axis of confidence ellipse (meter) 552
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 144
Circular confidence region, given by single value of horizontal uncertainty (meter) 590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.69428
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 94763651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-28 19:53:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SALO.HNZ. 2021-08-28T19:44:43.35 3.0 undecidable manual Sg 13.41 0
IV.MBAL.EHZ. 2021-08-28T19:44:30.13 3.0 undecidable manual Sn 1.27 0
IV.PTRP.HHZ. 2021-08-28T19:44:07.79 3.0 undecidable manual Sn 0.9 0
IX.COL3.HHZ.02 2021-08-28T19:44:03.37 3.0 undecidable manual Sg 9.17 0
IV.ESCV.HHZ. 2021-08-28T19:43:57.46 3.0 positive manual Pn -0.85 0
IV.ORI.HHZ. 2021-08-28T19:43:51.33 3.0 positive manual Pg 11.95 0
GU.GORR.HHZ. 2021-08-28T19:43:45.89 3.0 positive manual Pn 3.36 0
GU.GSCL.HHZ. 2021-08-28T19:43:36.79 3.0 undecidable manual Pg 6.12 0
IV.VULT.HHZ. 2021-08-28T19:43:23.70 3.0 undecidable manual Pn -0.97 0
IV.SACS.HHZ. 2021-08-28T19:43:23.94 3.0 undecidable manual S 0.92 0
IV.CSP1.EHZ. 2021-08-28T19:43:12.55 0.6 undecidable manual S 2 0.6943 50 0.69 37
IV.FDMO.HHZ. 2021-08-28T19:43:10.61 0.6 undecidable manual S 355 0.6412 50 0.33 42
IV.MOMA.HHZ. 2021-08-28T19:43:09.39 0.6 undecidable manual S 313 0.598 50 0.4 42
IV.MC2.EHZ. 2021-08-28T19:43:06.88 0.6 undecidable manual S 2 0.5135 50 0.38 43
IV.NRCA.HHZ. 2021-08-28T19:43:04.08 0.6 undecidable manual S 355 0.4371 50 -0.16 46
IV.TERO.HHZ. 2021-08-28T19:43:02.57 0.6 undecidable manual S 55 0.393 50 -0.35 44
IV.CSP1.EHZ. 2021-08-28T19:43:02.11 1.0 negative manual P 2 0.6943 50 0.03 22
IV.MTRA.EHZ. 2021-08-28T19:43:02.99 0.6 undecidable manual S 25 0.3966 50 -0.04 47
IV.GAVE.EHZ. 2021-08-28T19:43:01.29 0.6 undecidable manual S 326 0.3561 50 -0.54 43
IV.FDMO.HHZ. 2021-08-28T19:43:01.05 1.0 positive manual P 355 0.6412 50 -0.12 22
IV.MF5.EHZ. 2021-08-28T19:43:01.06 1.0 positive manual P 20 0.6277 50 0.12 22
IV.MOMA.HHZ. 2021-08-28T19:43:00.73 0.1 undecidable manual P 313 0.598 50 0.3 86
IV.SMA1.EHZ. 2021-08-28T19:42:59.21 0.6 undecidable manual S 28 0.2644 50 0.11 48
IV.MC2.EHZ. 2021-08-28T19:42:59.03 0.1 undecidable manual P 2 0.5135 50 0.04 92
IV.NRCA.HHZ. 2021-08-28T19:42:57.41 0.1 negative manual P 355 0.4371 50 -0.28 89
IV.GAVE.EHZ. 2021-08-28T19:42:56.01 0.6 positive manual P 326 0.3561 50 -0.28 45
IV.MTRA.EHZ. 2021-08-28T19:42:56.84 0.6 positive manual P 25 0.3966 50 -0.14 46
IV.FAGN.HHZ. 2021-08-28T19:42:56.32 0.6 undecidable manual P 113 0.3354 50 0.39 45
IV.TERO.HHZ. 2021-08-28T19:42:56.79 0.1 positive manual P 55 0.393 50 -0.14 93
IV.ARRO.EHZ. 2021-08-28T19:42:55.67 0.3 negative manual P 302 0.3462 50 -0.46 66
IV.FIAM.HHZ. 2021-08-28T19:42:55.19 0.6 undecidable manual S 196 0.134 126 0.1 49
IV.SMA1.EHZ. 2021-08-28T19:42:54.69 0.6 negative manual P 28 0.2644 50 -0.03 49
IV.RM33.EHZ. 2021-08-28T19:42:54.43 0.6 undecidable manual S 18 0.1169 129 -0.12 49
IV.RM33.EHZ. 2021-08-28T19:42:52.21 0.1 negative manual P 18 0.1169 129 0.12 98
IV.FIAM.HHZ. 2021-08-28T19:42:52.42 0.1 undecidable manual P 196 0.134 126 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:1.8 0.000612 0.28 AML other m 2021-08-28T19:42:54.83
IV.RM33.EHE. ML:1.8 0.0006275 0.28 AML other m 2021-08-28T19:42:54.69
IV.RM33.EHN. ML:1.6 0.000389 0.66 AML other m 2021-08-28T19:42:54.57
IV.RM33.HNN. ML:1.6 0.000448 0.68 AML other m 2021-08-28T19:42:54.56
IV.FIAM.HHN. ML:1.3 0.000177 0.14 AML other m 2021-08-28T19:42:55.35
IV.FIAM.HHE. ML:1 0.0001041 0.5 AML other m 2021-08-28T19:42:55.58
IV.SMA1.EHE. ML:1.6 0.000184 0.54 AML other m 2021-08-28T19:42:59.75
IV.SMA1.EHN. ML:1.3 0.0001006 0.62 AML other m 2021-08-28T19:43:00.14
IV.ARRO.EHE. ML:1 4.215E-5 0.44 AML other m 2021-08-28T19:43:01.31
IV.GAVE.EHE. ML:1.4 9.315E-5 1.02 AML other m 2021-08-28T19:43:01.19
IV.GAVE.EHN. ML:1.5 0.00011065 0.28 AML other m 2021-08-28T19:43:02.20
IV.MTRA.EHN. ML:1.8 0.0002045 0.08 AML other m 2021-08-28T19:43:03.36
IV.MTRA.EHE. ML:1.7 0.000165 0.08 AML other m 2021-08-28T19:43:03.35
IV.ARRO.EHN. ML:1.2 5.915E-5 0.12 AML other m 2021-08-28T19:43:03.54
IV.NRCA.HHE. ML:1.9 0.0002365 0.14 AML other m 2021-08-28T19:43:04.57
IV.NRCA.HHN. ML:1.6 0.000108 0.74 AML other m 2021-08-28T19:43:04.79
IV.TERO.HHN. ML:1.3 6.03E-5 1.58 AML other m 2021-08-28T19:43:04.01
IV.FAGN.HHE. ML:1.4 0.0001045 0.7 AML other m 2021-08-28T19:43:04.95
IV.FAGN.HHN. ML:1.4 0.00010045 0.4 AML other m 2021-08-28T19:43:05.73
IV.MOMA.HHE. ML:1.5 6.035E-5 0.22 AML other m 2021-08-28T19:43:10.88
IV.MOMA.HHN. ML:1.4 3.9E-5 0.18 AML other m 2021-08-28T19:43:10.89
IV.TERO.HHE. ML:2.1 0.0003725 0.42 AML other m 2021-08-28T19:43:16.46
GU.GORR.HHE. ML:3.1 7.255E-5 0.06 AML other m 2021-08-28T19:43:52.62
GU.GORR.HHN. ML:2.9 4.84E-5 0.06 AML other m 2021-08-28T19:43:54.02
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