Earthquake with magnitude of ML 1.6 on date 28-10-2020 and time 19:27:25 (UTC) in region 1 km SE San Demetrio ne' Vestini (AQ)

A magnitude ML 1.6 earthquake occured in region: 1 km SE San Demetrio ne' Vestini (AQ), on

  • 28-10-2020 19:27:25 (UTC)
  • 28-10-2020 20:27:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.28, 13.56 at 10 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
San Demetrio ne' Vestini AQ 1 1854 1854
Villa Sant'Angelo AQ 2 424 2278
Sant'Eusanio Forconese AQ 3 394 2672
Fagnano Alto AQ 3 418 3090
Prata d'Ansidonia AQ 4 496 3586
Poggio Picenze AQ 5 1136 4722
Barisciano AQ 6 1828 6550
Fossa AQ 6 721 7271
Fontecchio AQ 7 369 7640
Ocre AQ 7 1167 8807
San Pio delle Camere AQ 8 661 9468
Rocca di Cambio AQ 8 533 10001
Rocca di Mezzo AQ 9 1526 11527
Caporciano AQ 10 230 11757
Santo Stefano di Sessanio AQ 10 111 11868
Carapelle Calvisio AQ 10 87 11955
Tione degli Abruzzi AQ 11 310 12265
Castelvecchio Calvisio AQ 11 153 12418
Calascio AQ 12 137 12555
Navelli AQ 15 554 13109
L'Aquila AQ 16 69753 82862
Castel del Monte AQ 16 413 83275
Ovindoli AQ 17 1227 84502
Ofena AQ 17 506 85008
Capestrano AQ 17 884 85892
Secinaro AQ 17 359 86251
Acciano AQ 17 327 86578
Lucoli AQ 19 1011 87589
Villa Santa Lucia degli Abruzzi AQ 19 123 87712
Collepietro AQ 19 237 87949

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SE of L'Aquila (69753 inhabitants)
44 Km S of Teramo (54892 inhabitants)
50 Km W of Chieti (51815 inhabitants)
55 Km W of Montesilvano (53738 inhabitants)
57 Km W of Pescara (121014 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
76 Km E of Guidonia Montecelio (88673 inhabitants)
81 Km E of Terni (111501 inhabitants)
93 Km NE of Velletri (53303 inhabitants)
99 Km E of Roma (2864731 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.6 2020-10-28
19:27:25
42.28 13.56 10 2020-10-28
19:33:29
Sala Sismica INGV-Roma 84219901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-28 19:27:25 ± 0.13
Latitude 42.28 ± 0.01
Longitude 13.56 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84219901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1210
Semi-minor axis of confidence ellipse (meter) 740
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 1210
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 15
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41549
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 84219901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-28 19:33:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2020-10-28T19:27:41.44 0.3 undecidable manual S 174 0.4155 50 0.96 54
IV.MC2.EHZ. 2020-10-28T19:27:38.78 3.0 positive manual P 0.23 0
IV.RM33.EHZ. 2020-10-28T19:27:38.88 0.3 undecidable manual S 311 0.3426 50 0.56 65
IV.INTR.HHZ. 2020-10-28T19:27:38.63 0.3 undecidable manual S 137 0.3705 50 -0.53 65
IV.NRCA.HHZ. 2020-10-28T19:27:37.69 3.0 positive manual P -0.09 0
IV.CAMP.HHZ. 2020-10-28T19:27:36.77 0.3 undecidable manual S 336 0.277 50 0.38 69
IV.VCEL.EHZ. 2020-10-28T19:27:35.56 0.3 undecidable manual S 61 0.2329 50 0.47 68
IV.VVLD.HHZ. 2020-10-28T19:27:34.02 0.3 undecidable manual P 174 0.4155 50 -0.12 71
IV.INTR.HHZ. 2020-10-28T19:27:33.28 0.1 undecidable manual P 137 0.3705 50 -0.1 96
IV.SMA1.EHZ. 2020-10-28T19:27:33.15 0.1 undecidable manual P 334 0.3858 50 -0.49 88
IV.RM33.EHZ. 2020-10-28T19:27:32.71 0.3 undecidable manual P 311 0.3426 50 -0.19 71
IV.CAMP.HHZ. 2020-10-28T19:27:31.36 0.1 undecidable manual P 336 0.277 50 -0.42 91
IV.PTQR.HHZ. 2020-10-28T19:27:31.83 0.3 undecidable manual P 205 0.2869 50 -0.12 73
IV.VCEL.EHZ. 2020-10-28T19:27:30.99 0.1 undecidable manual P 61 0.2329 50 -0.04 100
IV.T0110.HHZ. 2020-10-28T19:27:29.77 0.1 undecidable manual P 109 0.1664 118 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T0110.HHE. ML:1.9 0.0007205 0.52 AML other m 2020-10-28T19:27:36.52
IV.T0110.HHN. ML:2 0.0007875 0.98 AML other m 2020-10-28T19:27:37.46
IV.PTQR.HHE. ML:1.4 0.0001009 0.42 AML other m 2020-10-28T19:27:38.00
IV.CAMP.HHN. ML:1.5 0.0001445 0.5 AML other m 2020-10-28T19:27:38.87
IV.CAMP.HHE. ML:1.5 0.0001455 0.6 AML other m 2020-10-28T19:27:39.60
IV.RM33.EHE. ML:1.6 0.0001415 0.78 AML other m 2020-10-28T19:27:42.70
IV.VCEL.EHN. ML:1.8 0.0004065 1.4 AML other m 2020-10-28T19:27:42.11
IV.VCEL.EHE. ML:1.9 0.000453 0.6 AML other m 2020-10-28T19:27:42.51
IV.RM33.EHN. ML:1.5 0.00011845 0.88 AML other m 2020-10-28T19:27:42.44
IV.PTQR.HHN. ML:1.3 9.635E-5 1.14 AML other m 2020-10-28T19:27:42.39
IV.VVLD.HHE. ML:1.4 6.68E-5 0.42 AML other m 2020-10-28T19:27:43.50
IV.INTR.HHN. ML:1.8 0.000227 1.28 AML other m 2020-10-28T19:27:43.96
IV.INTR.HHE. ML:1.7 0.0001585 0.62 AML other m 2020-10-28T19:27:44.61
IV.VVLD.HHN. ML:1.4 7.06E-5 0.46 AML other m 2020-10-28T19:27:47.02
IV.NRCA.HHN. ML:1.5 4.995E-5 0.5 AML other m 2020-10-28T19:27:47.74
IV.NRCA.HHE. ML:1.6 6.975E-5 0.68 AML other m 2020-10-28T19:27:48.35
IV.SMA1.EHE. ML:1.7 0.000148 0.5 AML other m 2020-10-28T19:27:48.85
IV.SMA1.EHN. ML:1.6 0.000126 1.54 AML other m 2020-10-28T19:27:49.20
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download