Earthquake with magnitude of ML 1.3 on date 26-01-2021 and time 16:43:48 (UTC) in region 4 km SW Roccafluvione (AP)

A magnitude ML 1.3 earthquake occured in region: 4 km SW Roccafluvione (AP), on

  • 26-01-2021 16:43:48 (UTC)
  • 26-01-2021 17:43:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.44 at 22 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
Roccafluvione AP 4 2010 2010
Venarotta AP 7 2066 4076
Acquasanta Terme AP 7 2916 6992
Palmiano AP 8 196 7188
Montegallo AP 9 523 7711
Ascoli Piceno AP 11 49407 57118
Valle Castellana TE 12 977 58095
Montemonaco AP 12 604 58699
Arquata del Tronto AP 14 1178 59877
Comunanza AP 14 3166 63043
Montefortino FM 15 1178 64221
Force AP 15 1354 65575
Folignano AP 16 9241 74816
Rotella AP 17 906 75722
Montefalcone Appennino FM 18 424 76146
Rocca Santa Maria TE 18 537 76683
Amandola FM 18 3629 80312
Castignano AP 19 2796 83108
Smerillo FM 19 365 83473
Civitella del Tronto TE 20 5116 88589
Montedinove AP 20 488 89077
Appignano del Tronto AP 20 1785 90862

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of Teramo (54892 inhabitants)
54 Km N of L'Aquila (69753 inhabitants)
62 Km E of Foligno (57155 inhabitants)
68 Km NW of Montesilvano (53738 inhabitants)
72 Km E of Terni (111501 inhabitants)
75 Km NW of Pescara (121014 inhabitants)
80 Km NW of Chieti (51815 inhabitants)
88 Km S of Ancona (100861 inhabitants)
91 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 1.3 2021-01-26
16:43:48
42.83 13.44 22 2021-01-26
16:59:33
Sala Sismica INGV-Roma 86607111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-26 16:43:48 ± 0.15
Latitude 42.83 ± 0.01
Longitude 13.44 ± 0.01
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86607111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 786
Semi-minor axis of confidence ellipse (meter) 451
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
Circular confidence region, given by single value of horizontal uncertainty (meter) 790
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 13
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) 0.31206
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 86607111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-26 16:59:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAPR.HNZ. 2021-01-26T16:45:41.84 3.0 undecidable manual Sg 18.559999 0
IV.IMI.HHZ. 2021-01-26T16:45:36.14 3.0 undecidable manual Sn 1.79 0
IV.CLTA.HHZ. 2021-01-26T16:45:18.38 3.0 undecidable manual Pg 12.38 0
OX.MPRI.HHZ. 2021-01-26T16:45:16.57 3.0 undecidable manual Sn 2.89 0
IV.PETRA.HHZ. 2021-01-26T16:45:13.22 3.0 undecidable manual Pg 16.33 0
IV.VOBA.HNZ. 2021-01-26T16:45:13.02 3.0 undecidable manual Sn -3.87 0
IV.CAGR.HHZ. 2021-01-26T16:45:13.70 3.0 undecidable manual Pg 13.47 0
IV.AGLI.HHZ. 2021-01-26T16:45:12.70 3.0 undecidable manual Sn -8.03 0
MN.TRI.HHZ. 2021-01-26T16:45:00.16 3.0 undecidable manual Sn -0.16 0
IV.MTMR.EHZ. 2021-01-26T16:44:53.05 3.0 undecidable manual Sg 7.65 0
IV.SPS2.HHZ. 2021-01-26T16:44:47.67 3.0 undecidable manual Pn 3.01 0
IV.CMPR.HHZ. 2021-01-26T16:44:35.44 3.0 undecidable manual Pg 8.36 0
IV.PE3.EHZ. 2021-01-26T16:44:02.65 3.0 undecidable manual Pn -0.7 0
IT.RMVT.HGZ. 2021-01-26T16:44:02.85 3.0 undecidable manual Pg -1.46 0
IV.CSP1.EHE. 2021-01-26T16:44:00.60 0.3 undecidable manual S 326 0.3121 114 0.13 70
IV.TERO.HHZ. 2021-01-26T16:43:59.05 0.3 undecidable manual S 150 0.241 122 0.45 67
IV.SMA1.EHN. 2021-01-26T16:43:58.04 0.1 undecidable manual S 201 0.2167 125 0.03 97
IV.ARVD.HHZ. 2021-01-26T16:43:58.61 3.0 negative manual P -0.09 0
IV.MC2.EHZ. 2021-01-26T16:43:57.88 0.3 undecidable manual S 293 0.2014 128 0.23 70
IV.MMO1.EHZ. 2021-01-26T16:43:55.59 0.3 undecidable manual S 308 0.1079 147 -0.16 72
IV.CSP1.EHE. 2021-01-26T16:43:55.09 0.1 undecidable manual P 326 0.3121 114 -0.17 93
IV.MTRA.EHZ. 2021-01-26T16:43:55.32 0.3 undecidable manual S 204 0.0827 154 -0.07 74
IV.MC2.EHZ. 2021-01-26T16:43:53.63 0.1 undecidable manual P 293 0.2014 128 0 97
IV.SMA1.EHN. 2021-01-26T16:43:53.88 0.1 undecidable manual P 201 0.2167 125 0.05 96
IV.MF5.EHZ. 2021-01-26T16:43:53.20 0.1 undecidable manual P 5 0.1556 136 0.16 96
IV.TERO.HHZ. 2021-01-26T16:43:53.76 0.1 undecidable manual P 150 0.241 122 -0.42 89
IV.MTRA.EHZ. 2021-01-26T16:43:52.33 0.1 undecidable manual P 204 0.0827 154 0.01 100
IV.MMO1.EHZ. 2021-01-26T16:43:52.46 0.1 undecidable manual P 308 0.1079 147 -0.07 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:0.9 5.4243865E-5 0.0512 AML other m 2021-01-26T16:43:55.46
IV.MTRA.EHN. ML:1 6.597513E-5 0.1408 AML other m 2021-01-26T16:43:55.48
IV.MTRA.HNE. ML:1.2 0.000104516005 0.6528 AML other m 2021-01-26T16:43:55.03
IV.MTRA.HNN. ML:1.3 0.000134303965 0.4608 AML other m 2021-01-26T16:44:02.19
IV.MF5.EHE. ML:1.4 0.00015029065 2.6496 AML other m 2021-01-26T16:44:00.24
IV.MF5.EHN. ML:1.3 0.00011604459 1.8304 AML other m 2021-01-26T16:44:11.07
IV.ARVD.HHE. ML:1.3 2.587738E-5 1.0368 AML other m 2021-01-26T16:44:20.68
IV.ARVD.HHN. ML:1.2 1.7948738E-5 0.6144 AML other m 2021-01-26T16:44:26.28
IV.PE3.EHE. ML:1.9 5.3065205E-5 0.0768 AML other m 2021-01-26T16:44:09.88
IV.PE3.EHN. ML:2.3 0.00015468875 1.3056 AML other m 2021-01-26T16:44:33.95
IV.SPS2.HHE. ML:2.7 1.9843238E-5 0.1408 AML other m 2021-01-26T16:46:08.04
IV.SPS2.HHN. ML:2.9 3.212393E-5 0.3072 AML other m 2021-01-26T16:46:07.27
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