Earthquake with magnitude of ML 1.0 on date 27-11-2020 and time 23:20:34 (Italy) in region 7 km SW Civitella del Tronto (TE)

A magnitude ML 1.0 earthquake occured in region: 7 km SW Civitella del Tronto (TE), on

  • 27-11-2020 22:20:34 (UTC)
  • 27-11-2020 23:20:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.74, 13.6 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
Civitella del Tronto TE 7 5116 5116
Campli TE 8 7209 12325
Valle Castellana TE 8 977 13302
Rocca Santa Maria TE 8 537 13839
Folignano AP 9 9241 23080
Torricella Sicura TE 11 2641 25721
Maltignano AP 13 2401 28122
Ascoli Piceno AP 13 49407 77529
Teramo TE 13 54892 132421
Sant'Egidio alla Vibrata TE 14 9811 142232
Cortino TE 15 656 142888
Acquasanta Terme AP 16 2916 145804
Ancarano TE 16 1857 147661
Roccafluvione AP 17 2010 149671
Castel di Lama AP 17 8634 158305
Bellante TE 17 7152 165457
Torano Nuovo TE 17 1611 167068
Venarotta AP 18 2066 169134
Sant'Omero TE 18 5243 174377
Montorio al Vomano TE 18 8218 182595
Appignano del Tronto AP 18 1785 184380
Colli del Tronto AP 20 3668 188048
Castellalto TE 20 7513 195561
Basciano TE 20 2434 197995
Canzano TE 20 1934 199929

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NW of Teramo (54892 inhabitants)
46 Km NE of L'Aquila (69753 inhabitants)
52 Km W of Montesilvano (53738 inhabitants)
59 Km NW of Pescara (121014 inhabitants)
64 Km NW of Chieti (51815 inhabitants)
77 Km E of Foligno (57155 inhabitants)
80 Km E of Terni (111501 inhabitants)
98 Km S of Ancona (100861 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 2020-11-27
22:20:34
42.74 13.6 11 2020-11-27
22:24:13
Sala Sismica INGV-Roma 85056031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-27 22:20:34 ± 0.14
Latitude 42.74 ± 0.01
Longitude 13.60 ± 0.01
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 85056031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 959
Semi-minor axis of confidence ellipse (meter) 626
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 960
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 199
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.47484
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

Field Value
Value 1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 85056031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-27 22:24:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-11-27T22:20:50.22 0.6 undecidable manual S 321 0.4515 50 0.32 44
IV.FDMO.HHZ. 2020-11-27T22:20:50.74 0.6 undecidable manual S 308 0.4748 50 0.16 45
IV.NRCA.HHZ. 2020-11-27T22:20:47.57 0.6 undecidable manual S 285 0.3651 50 0.23 46
IV.MF5.EHZ. 2020-11-27T22:20:44.94 0.6 undecidable manual S 338 0.2644 50 0.57 43
IV.SMA1.EHZ. 2020-11-27T22:20:43.18 0.6 undecidable manual S 240 0.2221 50 0.08 49
IV.MMO1.EHZ. 2020-11-27T22:20:43.91 0.6 undecidable manual S 309 0.2518 50 -0.09 48
IV.FDMO.HHZ. 2020-11-27T22:20:43.15 1.0 negative manual P 308 0.4748 50 -0.44 21
IV.CSP1.EHZ. 2020-11-27T22:20:42.91 0.6 positive manual P 321 0.4515 50 -0.28 45
IV.NRCA.HHZ. 2020-11-27T22:20:41.35 0.6 undecidable manual P 285 0.3651 50 -0.36 45
IV.MNTT.EHZ. 2020-11-27T22:20:41.37 3.0 negative manual P 0.34 0
IV.TERO.HHZ. 2020-11-27T22:20:40.29 0.6 undecidable manual S 177 0.1196 129 0.3 47
IV.MTRA.EHZ. 2020-11-27T22:20:40.93 0.6 undecidable manual S 276 0.1475 124 0.09 49
IV.MF5.EHZ. 2020-11-27T22:20:40.03 0.6 negative manual P 338 0.2644 50 0.04 49
IV.SMA1.EHZ. 2020-11-27T22:20:39.16 0.6 negative manual P 240 0.2221 50 -0.11 48
IV.MMO1.EHZ. 2020-11-27T22:20:39.44 0.1 undecidable manual P 309 0.2518 50 -0.34 92
IV.TERO.HHZ. 2020-11-27T22:20:37.51 0.1 positive manual P 177 0.1196 129 0.04 100
IV.MTRA.EHZ. 2020-11-27T22:20:37.86 0.1 undecidable manual P 276 0.1475 124 -0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHE. ML:0.9 8.535E-5 0.06 AML other m 2020-11-27T22:20:40.58
IV.TERO.HHN. ML:0.9 8.1E-5 0.08 AML other m 2020-11-27T22:20:40.55
IV.MTRA.EHE. ML:1.3 0.000177 0.36 AML other m 2020-11-27T22:20:41.22
IV.MTRA.EHN. ML:1.1 0.00010805 0.52 AML other m 2020-11-27T22:20:41.15
IV.SMA1.EHN. ML:1.2 8.9E-5 0.12 AML other m 2020-11-27T22:20:43.31
IV.SMA1.EHE. ML:1 6.29E-5 0.12 AML other m 2020-11-27T22:20:43.46
IV.NRCA.HHN. ML:0.9 2.72E-5 0.78 AML other m 2020-11-27T22:20:48.78
IV.NRCA.HHE. ML:0.9 2.565E-5 0.5 AML other m 2020-11-27T22:20:49.64
IV.FDMO.HHN. ML:1 2.42E-5 1.74 AML other m 2020-11-27T22:20:51.97
IV.FDMO.HHE. ML:0.9 2.145E-5 0.2 AML other m 2020-11-27T22:20:51.06
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