Earthquake with magnitude of ML 1.4 on date 24-01-2021 and time 01:31:37 (UTC) in region 6 km E Montegallo (AP)

A magnitude ML 1.4 earthquake occured in region: 6 km E Montegallo (AP), on

  • 24-01-2021 01:31:37 (UTC)
  • 24-01-2021 02:31:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.4 at 21 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 6 523 523
Acquasanta Terme AP 7 2916 3439
Roccafluvione AP 7 2010 5449
Palmiano AP 9 196 5645
Venarotta AP 10 2066 7711
Montemonaco AP 10 604 8315
Arquata del Tronto AP 11 1178 9493
Valle Castellana TE 13 977 10470
Montefortino FM 14 1178 11648
Comunanza AP 14 3166 14814
Ascoli Piceno AP 15 49407 64221
Force AP 17 1354 65575
Amandola FM 17 3629 69204
Montefalcone Appennino FM 18 424 69628
Folignano AP 19 9241 78869
Rocca Santa Maria TE 19 537 79406
Rotella AP 19 906 80312
Accumoli RI 20 667 80979
Smerillo FM 20 365 81344

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Teramo (54892 inhabitants)
53 Km N of L'Aquila (69753 inhabitants)
59 Km E of Foligno (57155 inhabitants)
69 Km E of Terni (111501 inhabitants)
71 Km NW of Montesilvano (53738 inhabitants)
78 Km NW of Pescara (121014 inhabitants)
82 Km NW of Chieti (51815 inhabitants)
88 Km E of Perugia (166134 inhabitants)
88 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 1.4 2021-01-24
01:31:37
42.83 13.4 21 2021-01-24
01:37:46
Sala Sismica INGV-Roma 86513311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-24 01:31:37 ± 0.13
Latitude 42.83 ± 0.00
Longitude 13.40 ± 0.01
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86513311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 549
Semi-minor axis of confidence ellipse (meter) 103
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 281
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34894
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 86513311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-24 01:37:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATFO.HHZ. 2021-01-24T01:32:02.84 3.0 undecidable manual S -0.04 0
IV.RM33.HNN. 2021-01-24T01:31:50.85 0.6 undecidable manual S 203 0.3489 110 0.46 44
IV.FDMO.HHZ. 2021-01-24T01:31:49.33 0.3 undecidable manual S 312 0.3094 113 0.04 74
IV.T1299.EHZ. 2021-01-24T01:31:47.19 0.6 undecidable manual S 204 0.214 124 0.38 46
IV.TERO.HHZ. 2021-01-24T01:31:47.63 0.6 undecidable manual S 144 0.2545 118 -0.2 48
IV.SMA1.EHZ. 2021-01-24T01:31:46.62 0.3 undecidable manual S 194 0.205 125 0.04 75
IV.NRCA.HHZ. 2021-01-24T01:31:46.83 0.6 undecidable manual S 271 0.2113 124 0.1 49
IV.MF5.EHZ. 2021-01-24T01:31:46.12 0.3 undecidable manual S 15 0.1637 133 0.5 69
IV.MMO1.EHZ. 2021-01-24T01:31:44.27 0.3 undecidable manual S 322 0.089 151 0.02 76
IV.RM33.HNN. 2021-01-24T01:31:44.51 0.1 undecidable manual P 203 0.3489 110 -0.27 93
IV.MNTT.EHZ. 2021-01-24T01:31:43.70 0.6 negative manual P 31 0.2716 117 0.14 48
IV.MTRA.EHZ. 2021-01-24T01:31:43.95 0.3 undecidable manual S 183 0.0728 156 -0.09 75
IV.FDMO.HHZ. 2021-01-24T01:31:43.88 1.0 positive manual P 312 0.3094 113 -0.27 23
IV.TERO.HHZ. 2021-01-24T01:31:43.32 0.6 undecidable manual P 144 0.2545 118 0.02 49
IV.SMA1.EHZ. 2021-01-24T01:31:42.54 0.1 negative manual P 194 0.205 125 -0.05 100
IV.NRCA.HHZ. 2021-01-24T01:31:42.59 0.1 negative manual P 271 0.2113 124 -0.08 99
IV.T1299.EHZ. 2021-01-24T01:31:42.76 0.1 undecidable manual P 204 0.214 124 0.05 99
IV.MF5.EHZ. 2021-01-24T01:31:41.91 0.3 positive manual P 15 0.1637 133 -0.12 74
IV.MMO1.EHZ. 2021-01-24T01:31:41.06 0.1 undecidable manual P 322 0.089 151 -0.17 99
IV.MTRA.EHZ. 2021-01-24T01:31:40.99 0.3 positive manual P 183 0.0728 156 -0.13 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.8 0.0002825 0.08 AML other m 2021-01-24T01:31:47.09
IV.SMA1.EHN. ML:1.7 0.00024039385 0.12 AML other m 2021-01-24T01:31:46.99
IV.NRCA.HHN. ML:1.7 0.0002561919 0.14 AML other m 2021-01-24T01:31:47.20
IV.NRCA.HHE. ML:1.5 0.00016254265 0.08 AML other m 2021-01-24T01:31:47.20
IV.MTRA.EHE. ML:1.3 0.000150799865 0.08 AML other m 2021-01-24T01:31:44.10
IV.MTRA.EHN. ML:1.5 0.0002165752 0.14 AML other m 2021-01-24T01:31:44.11
IV.MTRA.HNE. ML:1.4 0.00016732461 0.0704 AML other m 2021-01-24T01:31:44.09
IV.MTRA.HNN. ML:1.5 0.00021632945 0.14 AML other m 2021-01-24T01:31:44.04
IV.MF5.EHE. ML:0.7 3.19997E-5 0.62 AML other m 2021-01-24T01:31:46.75
IV.MF5.EHN. ML:0.8 3.41319975E-5 0.28 AML other m 2021-01-24T01:31:46.86
IV.NRCA.HNE. ML:1.5 0.00015510242 0.08 AML other m 2021-01-24T01:31:47.20
IV.NRCA.HNN. ML:1.7 0.0002561712 0.32 AML other m 2021-01-24T01:31:47.94
IV.TERO.HHE. ML:0.8 2.351445E-5 0.06 AML other m 2021-01-24T01:31:48.67
IV.TERO.HHN. ML:0.8 3.0804575E-5 0.06 AML other m 2021-01-24T01:31:48.70
IV.FDMO.HHE. ML:1.2 5.429874E-5 0.2 AML other m 2021-01-24T01:31:49.71
IV.FDMO.HHN. ML:0.9 2.965203E-5 0.14 AML other m 2021-01-24T01:31:49.88
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