Earthquake with magnitude of ML 1.2 on date 26-10-2020 and time 21:22:28 (Italy) in region 3 km E Roccafluvione (AP)

A magnitude ML 1.2 earthquake occured in region: 3 km E Roccafluvione (AP), on

  • 26-10-2020 20:22:28 (UTC)
  • 26-10-2020 21:22:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.51 at 20 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
Venarotta AP 3 2066 2066
Roccafluvione AP 3 2010 4076
Ascoli Piceno AP 5 49407 53483
Palmiano AP 6 196 53679
Folignano AP 11 9241 62920
Rotella AP 12 906 63826
Force AP 12 1354 65180
Castignano AP 13 2796 67976
Acquasanta Terme AP 13 2916 70892
Appignano del Tronto AP 13 1785 72677
Comunanza AP 14 3166 75843
Valle Castellana TE 14 977 76820
Montedinove AP 14 488 77308
Maltignano AP 15 2401 79709
Montegallo AP 15 523 80232
Montefalcone Appennino FM 15 424 80656
Montemonaco AP 16 604 81260
Civitella del Tronto TE 16 5116 86376
Montalto delle Marche AP 16 2122 88498
Castel di Lama AP 17 8634 97132
Montefortino FM 17 1178 98310
Offida AP 17 5058 103368
Sant'Egidio alla Vibrata TE 17 9811 113179
Smerillo FM 17 365 113544
Montelparo FM 18 778 114322
Santa Vittoria in Matenano FM 18 1330 115652
Castorano AP 18 2380 118032
Amandola FM 19 3629 121661
Ancarano TE 19 1857 123518
Rocca Santa Maria TE 19 537 124055
Colli del Tronto AP 19 3668 127723
Monte Rinaldo FM 20 379 128102
Arquata del Tronto AP 20 1178 129280

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Teramo (54892 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
65 Km NW of Montesilvano (53738 inhabitants)
67 Km E of Foligno (57155 inhabitants)
72 Km NW of Pescara (121014 inhabitants)
78 Km NW of Chieti (51815 inhabitants)
78 Km E of Terni (111501 inhabitants)
84 Km S of Ancona (100861 inhabitants)
96 Km E of Perugia (166134 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 1.2 2020-10-26
20:22:28
42.86 13.51 20 2020-10-26
20:27:34
Sala Sismica INGV-Roma 84162641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-26 20:22:28 ± 0.2
Latitude 42.86 ± 0.01
Longitude 13.51 ± 0.01
Depth (km) 20 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84162641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 610
Semi-minor axis of confidence ellipse (meter) 414
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41279
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 84162641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-26 20:27:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-10-26T20:22:44.42 3.0 negative manual P 0.19 0
IV.SMA1.EHZ. 2020-10-26T20:22:39.47 0.3 undecidable manual S 210 0.2626 115 0.21 71
IV.TERO.HHZ. 2020-10-26T20:22:38.74 0.3 undecidable manual S 164 0.2455 117 -0.06 73
IV.MNTT.EHZ. 2020-10-26T20:22:37.90 0.3 undecidable manual S 17 0.2122 122 -0.05 73
IV.MF5.EHZ. 2020-10-26T20:22:36.16 0.3 undecidable manual S 343 0.1349 137 0 76
IV.MMO1.EHZ. 2020-10-26T20:22:36.23 0.1 undecidable manual S 287 0.1421 135 -0.08 100
IV.RM33.EHZ. 2020-10-26T20:22:36.59 0.6 undecidable manual P 212 0.4128 105 -0.53 43
IV.NRCA.HHZ. 2020-10-26T20:22:35.25 0.3 undecidable manual P 265 0.2932 112 0.07 72
IV.MNTT.EHZ. 2020-10-26T20:22:34.22 0.3 undecidable manual P 17 0.2122 122 0.28 71
IV.TERO.HHZ. 2020-10-26T20:22:34.39 0.3 undecidable manual P 164 0.2455 117 -0.05 74
IV.SMA1.EHZ. 2020-10-26T20:22:34.73 0.1 undecidable manual P 210 0.2626 115 0.02 98
IV.MMO1.EHZ. 2020-10-26T20:22:32.93 0.3 undecidable manual P 287 0.1421 135 -0.07 75
IV.MF5.EHZ. 2020-10-26T20:22:32.91 0.3 undecidable manual P 343 0.1349 137 -0.01 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHE. ML:1.2 8.220051E-5 0.064 AML other m 2020-10-26T20:22:39.01
IV.TERO.HHN. ML:1 4.5576925E-5 0.064 AML other m 2020-10-26T20:22:39.01
IV.TERO.HNE. ML:1.4 9.7981785E-5 0.0768 AML other m 2020-10-26T20:22:38.92
IV.SMA1.EHE. ML:0.8 3.0236085E-5 0.2944 AML other m 2020-10-26T20:22:41.52
IV.SMA1.EHN. ML:0.9 3.565015E-5 0.1152 AML other m 2020-10-26T20:22:39.78
IV.NRCA.HHE. ML:1.4 8.464373E-5 0.0896 AML other m 2020-10-26T20:22:41.17
IV.NRCA.HHN. ML:1.3 7.3081035E-5 0.0896 AML other m 2020-10-26T20:22:40.97
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