Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 26-01-2021 and time 18:12:05 (Italy) in region 5 km SW Roccafluvione (AP)

A magnitude ML 1.5 earthquake occured in region: 5 km SW Roccafluvione (AP), on

  • 26-01-2021 17:12:05 (UTC)
  • 26-01-2021 18:12:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8340, 13.4300 at 23 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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 5 2010 2010
Acquasanta Terme AP 7 2916 4926
Venarotta AP 7 2066 6992
Palmiano AP 8 196 7188
Montegallo AP 8 523 7711
Montemonaco AP 11 604 8315
Valle Castellana TE 12 977 9292
Ascoli Piceno AP 12 49407 58699
Arquata del Tronto AP 13 1178 59877
Comunanza AP 14 3166 63043
Montefortino FM 14 1178 64221
Force AP 15 1354 65575
Folignano AP 17 9241 74816
Rotella AP 17 906 75722
Montefalcone Appennino FM 17 424 76146
Amandola FM 17 3629 79775
Rocca Santa Maria TE 18 537 80312
Smerillo FM 19 365 80677
Castignano AP 20 2796 83473
Montedinove AP 20 488 83961

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Teramo (54892 inhabitants)
54 Km N of L'Aquila (69753 inhabitants)
61 Km E of Foligno (57155 inhabitants)
69 Km NW of Montesilvano (53738 inhabitants)
71 Km E of Terni (111501 inhabitants)
76 Km NW of Pescara (121014 inhabitants)
81 Km NW of Chieti (51815 inhabitants)
87 Km S of Ancona (100861 inhabitants)
90 Km E of Perugia (166134 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2021-01-26
17:12:05		 42.8343 13.4298 23 2021-07-12
16:54:59		 Bollettino Sismico Italiano INGV 87454191
Reviewed
Rev100 		ML 1.5 2021-01-26
17:12:05		 42.8273 13.4188 21 2021-01-26
17:17:51		 Sala Sismica INGV-Roma 86607551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-26 17:12:05 ± 0.09
Latitude 42.8343 ± 0.0027
Longitude 13.4298 ± 0.0061
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87454191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 468
Semi-minor axis of confidence ellipse (meter) 162
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
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) 0.08094
Epicentral distance of station farthest from the epicenter (degree) 0.43617
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 87454191
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-24 14:55:50

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 86607551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-26 17:17:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MML1.HNE. 2021-01-26T17:12:21.25 0.6 undecidable manual S 310 48.4182 108 0.19 46
IV.LNSS.HNZ. 2021-01-26T17:12:19.63 0.3 undecidable manual S 231 40.8258 112 0.47 66
IV.PF6.EHN. 2021-01-26T17:12:18.65 0.3 undecidable manual S 331 38.7279 113 0.01 73
IV.FDMO.HHZ. 2021-01-26T17:12:17.80 0.3 undecidable manual S 309 35.742 115 -0.11 71
IV.CAMP.HHE. 2021-01-26T17:12:17.45 0.6 undecidable manual S 183 33.1446 117 0.16 47
IV.CSP1.EHZ. 2021-01-26T17:12:17.51 0.6 undecidable manual S 327 33.9438 117 0.04 49
IV.GUMA.HNN. 2021-01-26T17:12:16.19 0.3 undecidable manual S 343 26.4513 124 0.43 68
IV.TERO.HHN. 2021-01-26T17:12:16.14 0.6 undecidable manual S 149 27.4503 123 0.17 48
IV.SMA1.EHZ. 2021-01-26T17:12:15.05 0.3 undecidable manual S 199 23.8539 127 -0.15 73
IV.T1299.HNN. 2021-01-26T17:12:15.85 0.3 undecidable manual S 209 25.2525 126 0.36 69
IV.NRCA.HHZ. 2021-01-26T17:12:15.48 0.3 undecidable manual S 270 25.6521 125 -0.1 73
IV.MF5.EHZ. 2021-01-26T17:12:14.41 0.6 undecidable manual S 8 17.1717 138 0.53 45
IV.MC2.EHZ. 2021-01-26T17:12:14.80 0.3 undecidable manual S 294 21.3675 131 0.12 74
IV.MML1.HNE. 2021-01-26T17:12:14.33 0.3 undecidable manual P 310 48.4182 108 -0.02 71
IV.LNSS.HNZ. 2021-01-26T17:12:13.22 0.1 negative manual P 231 40.8258 112 -0.03 96
IV.CSP1.EHZ. 2021-01-26T17:12:12.15 0.1 positive manual P 327 33.9438 117 -0.13 95
IV.FDMO.HHZ. 2021-01-26T17:12:12.29 0.1 undecidable manual P 309 35.742 115 -0.24 93
IV.MMO1.EHZ. 2021-01-26T17:12:12.60 0.3 undecidable manual S 311 11.0778 151 -0.32 71
IV.PF6.EHN. 2021-01-26T17:12:12.78 0.3 undecidable manual P 331 38.7279 113 -0.17 70
IV.MTRA.EHZ. 2021-01-26T17:12:12.37 0.3 undecidable manual S 198 8.9799 156 -0.31 72
IV.CAMP.HHE. 2021-01-26T17:12:12.08 0.1 negative manual P 183 33.1446 117 -0.1 96
IV.T1299.HNN. 2021-01-26T17:12:11.21 0.1 negative manual P 209 25.2525 126 0.08 98
IV.NRCA.HHZ. 2021-01-26T17:12:11.01 0.3 undecidable manual P 270 25.6521 125 -0.17 72
IV.TERO.HHN. 2021-01-26T17:12:11.36 0.3 undecidable manual P 149 27.4503 123 -0.05 74
IV.GUMA.HNN. 2021-01-26T17:12:11.38 0.1 positive manual P 343 26.4513 124 0.09 98
IV.MF5.EHZ. 2021-01-26T17:12:10.33 0.1 positive manual P 8 17.1717 138 0.12 99
IV.MC2.EHZ. 2021-01-26T17:12:10.68 0.1 positive manual P 294 21.3675 131 0.01 100
IV.SMA1.EHZ. 2021-01-26T17:12:10.96 0.1 negative manual P 199 23.8539 127 0 100
IV.MTRA.EHZ. 2021-01-26T17:12:09.37 0.1 negative manual P 198 8.9799 156 -0.14 99
IV.MMO1.EHZ. 2021-01-26T17:12:09.48 0.1 positive manual P 311 11.0778 151 -0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNE. ML:1.4 0.00016390105 0.1024 AML other m 2021-01-26T17:12:12.50
IV.MTRA.EHE. ML:1.4 0.00015782485 0.0896 AML other m 2021-01-26T17:12:12.51
IV.MTRA.HNN. ML:1.5 0.00022929274999999998 0.1408 AML other m 2021-01-26T17:12:12.51
IV.MTRA.EHN. ML:1.6 0.0002485 0.14 AML other m 2021-01-26T17:12:12.44
IV.SMA1.EHE. ML:1.4 0.00011440419 0.1152 AML other m 2021-01-26T17:12:15.45
IV.SMA1.EHN. ML:1.5 0.00013786814 0.0896 AML other m 2021-01-26T17:12:15.55
IV.NRCA.HHN. ML:1.7 0.0002399527 0.1408 AML other m 2021-01-26T17:12:15.62
IV.NRCA.HNN. ML:1.7 0.00024188509999999999 0.1408 AML other m 2021-01-26T17:12:15.56
IV.NRCA.HHE. ML:1.4 0.000115796485 0.128 AML other m 2021-01-26T17:12:17.11
IV.NRCA.HNE. ML:1.4 0.00011475655 0.1408 AML other m 2021-01-26T17:12:17.11
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download