Earthquake with magnitude of ML 0.9 on date 18-01-2021 and time 17:53:45 (UTC) in region 5 km E Montegallo (AP)

A magnitude ML 0.9 earthquake occured in region: 5 km E Montegallo (AP), on

  • 18-01-2021 17:53:45 (UTC)
  • 18-01-2021 18:53:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.84, 13.39 at 19 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
Montegallo AP 5 523 523
Roccafluvione AP 7 2010 2533
Montemonaco AP 8 604 3137
Palmiano AP 8 196 3333
Acquasanta Terme AP 8 2916 6249
Venarotta AP 10 2066 8315
Arquata del Tronto AP 11 1178 9493
Montefortino FM 12 1178 10671
Comunanza AP 13 3166 13837
Valle Castellana TE 15 977 14814
Ascoli Piceno AP 15 49407 64221
Amandola FM 16 3629 67850
Force AP 16 1354 69204
Montefalcone Appennino FM 17 424 69628
Smerillo FM 19 365 69993
Rotella AP 19 906 70899

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of Teramo (54892 inhabitants)
55 Km N of L'Aquila (69753 inhabitants)
57 Km E of Foligno (57155 inhabitants)
68 Km E of Terni (111501 inhabitants)
72 Km NW of Montesilvano (53738 inhabitants)
80 Km NW of Pescara (121014 inhabitants)
84 Km NW of Chieti (51815 inhabitants)
87 Km E of Perugia (166134 inhabitants)
87 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 0.9 2021-01-18
17:53:45
42.84 13.39 19 2021-01-18
18:05:45
Sala Sismica INGV-Roma 86355721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-18 17:53:45 ± 0.23
Latitude 42.84 ± 0.01
Longitude 13.39 ± 0.01
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86355721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 827
Semi-minor axis of confidence ellipse (meter) 663
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 52
Circular confidence region, given by single value of horizontal uncertainty (meter) 830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.29318
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 86355721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-18 18:05:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-01-18T17:53:57.08 0.6 undecidable manual S 311 0.2932 111 -0.34 45
IV.TERO.HHZ. 2021-01-18T17:53:56.39 0.3 undecidable manual S 145 0.2707 113 -0.41 67
IV.MC2.EHZ. 2021-01-18T17:53:54.29 0.3 undecidable manual S 295 0.1619 129 0.27 70
IV.MF5.EHZ. 2021-01-18T17:53:53.97 0.3 undecidable manual S 19 0.1529 131 0.16 71
IV.FDMO.HHZ. 2021-01-18T17:53:52.33 1.0 negative manual P 311 0.2932 111 -0.2 23
IV.TERO.HHZ. 2021-01-18T17:53:52.55 0.1 undecidable manual P 145 0.2707 113 0.38 91
IV.MMO1.EHZ. 2021-01-18T17:53:52.14 0.3 undecidable manual S 320 0.0719 154 -0.21 74
IV.MTRA.EHZ. 2021-01-18T17:53:52.64 0.3 undecidable manual S 177 0.0872 149 0.08 74
IV.MF5.EHZ. 2021-01-18T17:53:50.31 0.1 undecidable manual P 19 0.1529 131 -0.14 97
IV.MC2.EHZ. 2021-01-18T17:53:50.63 0.1 undecidable manual P 295 0.1619 129 0.06 98
IV.MMO1.EHZ. 2021-01-18T17:53:49.36 1.0 undecidable manual P 320 0.0719 154 -0.24 24
IV.MTRA.EHZ. 2021-01-18T17:53:49.76 0.1 undecidable manual P 177 0.0872 149 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:0.9 6.5895045E-5 0.1152 AML other m 2021-01-18T17:53:52.89
IV.MTRA.EHN. ML:0.9 6.1326955E-5 0.0768 AML other m 2021-01-18T17:53:52.72
IV.MTRA.HNE. ML:1.1 0.00010084185 1.0368 AML other m 2021-01-18T17:53:57.61
IV.MTRA.HNN. ML:1.2 0.00013225755 0.6016 AML other m 2021-01-18T17:53:49.52
IV.MF5.EHE. ML:1 6.020756E-5 2.176 AML other m 2021-01-18T17:53:51.19
IV.MF5.EHN. ML:1 6.1799435E-5 1.3184 AML other m 2021-01-18T17:53:50.69
IV.FDMO.HHE. ML:0.6 1.593863E-5 1.3056 AML other m 2021-01-18T17:54:08.72
IV.FDMO.HHN. ML:0.7 1.7555375E-5 1.216 AML other m 2021-01-18T17:54:07.16
IV.TERO.HHE. ML:0.4 8.8580645E-6 0.64 AML other m 2021-01-18T17:53:54.71
IV.TERO.HHN. ML:0.7 2.1885985E-5 1.1392 AML other m 2021-01-18T17:54:05.22
IV.TERO.HNE. ML:1.4 0.00010817081 1.1776 AML other m 2021-01-18T17:53:54.46
IV.TERO.HNN. ML:1.6 0.0001856507 1.0112 AML other m 2021-01-18T17:54:00.09
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