Earthquake with magnitude of ML 1.0 on date 24-11-2020 and time 09:26:24 (UTC) in region 9 km W Arquata del Tronto (AP)

A magnitude ML 1.0 earthquake occured in region: 9 km W Arquata del Tronto (AP), on

  • 24-11-2020 09:26:24 (UTC)
  • 24-11-2020 10:26:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.81, 13.2 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
Arquata del Tronto AP 9 1178 1178
Norcia PG 9 4957 6135
Castelsantangelo sul Nera MC 11 281 6416
Montegallo AP 12 523 6939
Accumoli RI 13 667 7606
Montemonaco AP 15 604 8210
Preci PG 16 724 8934
Ussita MC 16 444 9378
Visso MC 17 1107 10485
Acquasanta Terme AP 18 2916 13401
Cascia PG 18 3217 16618
Montefortino FM 19 1178 17796

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
44 Km W of Teramo (54892 inhabitants)
53 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
94 Km S of Ancona (100861 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km NE of Tivoli (56533 inhabitants)
99 Km E of Viterbo (67173 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 1.0 2020-11-24
09:26:24
42.81 13.2 10 2020-11-24
09:34:22
Sala Sismica INGV-Roma 84979911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-24 09:26:24 ± 0.06
Latitude 42.81 ± 0.00
Longitude 13.20 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84979911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 319
Semi-minor axis of confidence ellipse (meter) 253
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.06925
Epicentral distance of station farthest from the epicenter (degree) 0.34804
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

Field Value
Value 1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 84979911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-24 09:34:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-11-24T09:26:36.83 0.6 undecidable manual S 122 0.348 50 -0.41 45
IV.MF5.EHZ. 2020-11-24T09:26:35.01 0.3 undecidable manual S 46 0.2635 50 0.29 70
IV.CSP1.EHZ. 2020-11-24T09:26:35.20 0.6 undecidable manual S 1 0.286 50 -0.21 47
IV.FDMO.HHZ. 2020-11-24T09:26:33.95 0.6 undecidable manual S 340 0.2455 109 -0.16 48
IV.LNSS.HHN. 2020-11-24T09:26:33.75 0.3 undecidable manual S 210 0.2338 110 0.04 74
IV.SMA1.EHZ. 2020-11-24T09:26:32.73 0.6 undecidable manual S 150 0.2014 113 0.2 48
IV.TERO.HHZ. 2020-11-24T09:26:31.44 0.6 undecidable manual P 122 0.348 50 -0.25 46
IV.CSP1.EHZ. 2020-11-24T09:26:30.58 1.0 positive manual P 1 0.286 50 -0.05 24
IV.MTRA.HNZ. 2020-11-24T09:26:30.75 0.6 undecidable manual S 109 0.152 119 -0.07 50
IV.CESI.HHE. 2020-11-24T09:26:30.67 0.1 undecidable manual P 313 0.2941 50 -0.1 96
IV.MF5.EHZ. 2020-11-24T09:26:30.55 0.1 undecidable manual P 46 0.2635 50 0.31 93
IV.LNSS.HHN. 2020-11-24T09:26:29.77 0.1 undecidable manual P 210 0.2338 110 0.11 97
IV.MMO1.EHZ. 2020-11-24T09:26:29.92 0.6 undecidable manual S 45 0.1322 123 -0.24 48
IV.SMA1.EHZ. 2020-11-24T09:26:29.04 0.6 negative manual P 150 0.2014 113 0.07 49
IV.FDMO.HHZ. 2020-11-24T09:26:29.78 1.0 positive manual P 340 0.2455 109 -0.1 24
IV.MC2.EHZ. 2020-11-24T09:26:29.75 0.6 undecidable manual S 355 0.1061 129 0.39 47
IV.NRCA.HHZ. 2020-11-24T09:26:28.06 0.6 undecidable manual S 294 0.0692 141 -0.28 48
IV.MC2.EHZ. 2020-11-24T09:26:27.51 1.0 undecidable manual P 355 0.1061 129 0.37 24
IV.MTRA.HNZ. 2020-11-24T09:26:27.94 0.1 undecidable manual P 109 0.152 119 -0.05 100
IV.MMO1.EHZ. 2020-11-24T09:26:27.48 0.1 undecidable manual P 45 0.1322 123 -0.12 99
IV.NRCA.HHZ. 2020-11-24T09:26:26.72 1.0 undecidable manual P 294 0.0692 141 0.17 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.2 0.00023531605 0.096 AML other m 2020-11-24T09:26:28.82
IV.NRCA.HHN. ML:1 0.000143899875 0.0576 AML other m 2020-11-24T09:26:28.37
IV.NRCA.HNE. ML:1.2 0.000223491 0.0896 AML other m 2020-11-24T09:26:28.77
IV.NRCA.HNN. ML:1 0.000157044135 0.3136 AML other m 2020-11-24T09:26:28.37
IV.SMA1.EHE. ML:0.4 1.428443E-5 0.3776 AML other m 2020-11-24T09:26:32.96
IV.SMA1.EHN. ML:0.4 1.4919675E-5 0.2048 AML other m 2020-11-24T09:26:33.25
IV.FDMO.HHE. ML:0.4 1.74525655E-5 0.1792 AML other m 2020-11-24T09:26:34.04
IV.FDMO.HHN. ML:0.7 2.4988465E-5 0.2176 AML other m 2020-11-24T09:26:34.13
IV.TERO.HHE. ML:0.6 1.38144E-5 0.1216 AML other m 2020-11-24T09:26:37.17
IV.TERO.HNE. ML:1.6 0.00013527285 1.0112 AML other m 2020-11-24T09:26:37.40
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