Earthquake with magnitude of ML 1.5 on date 28-10-2020 and time 20:55:53 (Italy) in region 2 km W Villa Sant'Angelo (AQ)

A magnitude ML 1.5 earthquake occured in region: 2 km W Villa Sant'Angelo (AQ), on

  • 28-10-2020 19:55:53 (UTC)
  • 28-10-2020 20:55:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.27, 13.51 at 8 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
Villa Sant'Angelo AQ 2 424 424
Sant'Eusanio Forconese AQ 3 394 818
Ocre AQ 4 1167 1985
Fossa AQ 4 721 2706
Rocca di Cambio AQ 4 533 3239
San Demetrio ne' Vestini AQ 5 1854 5093
Fagnano Alto AQ 6 418 5511
Rocca di Mezzo AQ 6 1526 7037
Poggio Picenze AQ 7 1136 8173
Prata d'Ansidonia AQ 8 496 8669
Fontecchio AQ 9 369 9038
Barisciano AQ 10 1828 10866
San Pio delle Camere AQ 12 661 11527
Tione degli Abruzzi AQ 13 310 11837
L'Aquila AQ 13 69753 81590
Caporciano AQ 13 230 81820
Santo Stefano di Sessanio AQ 14 111 81931
Lucoli AQ 14 1011 82942
Ovindoli AQ 15 1227 84169
Carapelle Calvisio AQ 15 87 84256
Castelvecchio Calvisio AQ 16 153 84409
Calascio AQ 17 137 84546
Tornimparte AQ 17 3187 87733
Navelli AQ 19 554 88287
Secinaro AQ 19 359 88646
Acciano AQ 20 327 88973
Massa d'Albe AQ 20 1476 90449

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of L'Aquila (69753 inhabitants)
47 Km SW of Teramo (54892 inhabitants)
55 Km W of Chieti (51815 inhabitants)
59 Km W of Montesilvano (53738 inhabitants)
62 Km W of Pescara (121014 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
71 Km E of Guidonia Montecelio (88673 inhabitants)
78 Km E of Terni (111501 inhabitants)
88 Km NE of Velletri (53303 inhabitants)
94 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 1.5 2020-10-28
19:55:53
42.27 13.51 8 2020-10-28
20:00:46
Sala Sismica INGV-Roma 84220041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-28 19:55:53 ± 0.28
Latitude 42.27 ± 0.02
Longitude 13.51 ± 0.02
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84220041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2220
Semi-minor axis of confidence ellipse (meter) 561
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 41
Circular confidence region, given by single value of horizontal uncertainty (meter) 2220
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.63762
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 84220041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-28 20:00:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SRES.HHZ. 2020-10-28T19:56:17.95 3.0 undecidable manual S -2.83 0
IV.NRCA.HHZ. 2020-10-28T19:56:15.68 0.3 undecidable manual S 333 0.6376 50 0.3 65
IV.SRES.HHZ. 2020-10-28T19:56:09.22 3.0 undecidable manual P 0.48 0
IV.INTR.HHZ. 2020-10-28T19:56:08.98 0.3 undecidable manual S 131 0.3876 50 1 53
IV.RM33.EHZ. 2020-10-28T19:56:07.36 0.6 undecidable manual S 318 0.3265 102 1.27 31
IV.CAMP.HHZ. 2020-10-28T19:56:05.12 0.6 undecidable manual S 345 0.2797 104 0.79 40
IV.NRCA.HHZ. 2020-10-28T19:56:05.76 0.1 positive manual P 333 0.6376 50 -0.27 88
IV.VCEL.EHZ. 2020-10-28T19:56:03.97 0.3 undecidable manual S 62 0.2761 104 -0.23 71
IV.T0110.HHZ. 2020-10-28T19:56:02.69 0.6 undecidable manual S 100 0.2005 109 1.29 32
IV.INTR.HHZ. 2020-10-28T19:56:01.36 0.1 undecidable manual P 131 0.3876 50 -0.4 90
IV.SMA1.EHZ. 2020-10-28T19:56:01.13 0.1 undecidable manual P 341 0.3858 50 -0.6 84
IV.RM33.EHZ. 2020-10-28T19:56:00.73 0.3 undecidable manual P 318 0.3265 102 0.07 73
IV.CAMP.HHZ. 2020-10-28T19:55:59.41 0.1 undecidable manual P 345 0.2797 104 -0.24 95
IV.VCEL.EHZ. 2020-10-28T19:55:59.52 0.3 undecidable manual P 62 0.2761 104 -0.05 74
IV.T0110.HHZ. 2020-10-28T19:55:57.91 0.1 undecidable manual P 100 0.2005 109 -0.05 100
IV.FAGN.HHZ. 2020-10-28T19:55:54.84 0.1 undecidable manual P 90 0.0549 141 -0.34 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T0110.HHE. ML:1.7 0.0003635 0.26 AML other m 2020-10-28T19:56:04.95
IV.CAMP.HHN. ML:1.2 8.425E-5 0.54 AML other m 2020-10-28T19:56:05.43
IV.T0110.HHN. ML:1.8 0.000421 0.96 AML other m 2020-10-28T19:56:05.51
IV.VCEL.EHE. ML:1.7 0.0002425 1.2 AML other m 2020-10-28T19:56:05.35
IV.CAMP.HHE. ML:1.2 6.835E-5 0.54 AML other m 2020-10-28T19:56:07.45
IV.INTR.HHE. ML:1.5 9.325E-5 0.82 AML other m 2020-10-28T19:56:10.60
IV.RM33.EHE. ML:1.3 8.465E-5 0.36 AML other m 2020-10-28T19:56:10.94
IV.VCEL.EHN. ML:1.7 0.000263 1.36 AML other m 2020-10-28T19:56:10.18
IV.RM33.EHN. ML:1.3 7.465E-5 0.86 AML other m 2020-10-28T19:56:10.52
IV.INTR.HHN. ML:1.5 0.0001082 0.84 AML other m 2020-10-28T19:56:13.57
IV.SMA1.EHN. ML:1.3 6.95E-5 0.6 AML other m 2020-10-28T19:56:16.57
IV.SMA1.EHE. ML:1.3 6.66E-5 0.44 AML other m 2020-10-28T19:56:16.67
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