Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-01-2021 and time 05:00:17 (Italy) in region 1 km N Barete (AQ)

A magnitude ML 1.3 earthquake occured in region: 1 km N Barete (AQ), on

  • 21-01-2021 04:00:17 (UTC)
  • 21-01-2021 05:00:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4580, 13.2800 at 13 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
Barete AQ 1 737 737
Pizzoli AQ 3 4326 5063
Cagnano Amiterno AQ 5 1369 6432
Capitignano AQ 7 665 7097
Montereale AQ 8 2581 9678
Scoppito AQ 10 3727 13405
Campotosto AQ 13 542 13947
Borbona RI 14 617 14564
L'Aquila AQ 15 69753 84317
Posta RI 17 694 85011
Antrodoco RI 17 2588 87599
Micigliano RI 18 127 87726
Tornimparte AQ 19 3187 90913
Borgo Velino RI 19 972 91885
Lucoli AQ 19 1011 92896
Amatrice RI 19 2657 95553
Crognaleto TE 19 1297 96850

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NW of L'Aquila (69753 inhabitants)
41 Km SW of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
73 Km SE of Foligno (57155 inhabitants)
74 Km W of Chieti (51815 inhabitants)
77 Km W of Pescara (121014 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
95 Km NE of Velletri (53303 inhabitants)
97 Km E of Viterbo (67173 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 1.3 2021-01-21
04:00:17		 42.4583 13.2802 13 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89121831
Reviewed
Rev100 		ML 1.2 2021-01-21
04:00:18		 42.4612 13.2733 11 2021-01-21
04:07:24		 Sala Sismica INGV-Roma 86419841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-21 04:00:17 ± 0.09
Latitude 42.4583 ± 0.0045
Longitude 13.2802 ± 0.0073
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89121831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 657
Semi-minor axis of confidence ellipse (meter) 267
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.43167
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 89121831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-15 16:15:27

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 86419841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-21 04:07:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-01-21T04:00:41.08 3.0 undecidable manual S -3.56 0
IV.NRCA.HHZ. 2021-01-21T04:00:32.32 0.3 undecidable manual S 342 43.7229 94 0.23 67
IV.FAGN.HHZ. 2021-01-21T04:00:29.78 0.3 undecidable manual S 131 32.8449 96 0.6 62
IV.TERO.HHZ. 2021-01-21T04:00:28.89 0.6 undecidable manual S 55 32.1456 96 -0.11 47
IV.LNSS.HHZ. 2021-01-21T04:00:27.22 0.6 undecidable manual S 309 25.3524 99 0.03 48
IV.GIGS.HHN. 2021-01-21T04:00:26.40 0.6 undecidable manual S 91 23.9538 100 -0.44 44
IV.SMA1.EHZ. 2021-01-21T04:00:26.19 0.3 undecidable manual S 13 19.6692 105 0.49 67
IV.FIAM.HHZ. 2021-01-21T04:00:26.65 1.0 undecidable manual S 212 24.9528 100 -0.46 22
IV.T0110.HHZ. 2021-01-21T04:00:26.65 0.3 undecidable manual P 122 47.9187 93 -0.1 69
IV.MCI.EHZ. 2021-01-21T04:00:26.39 3.0 positive manual P 1.04 0
IV.NRCA.HHZ. 2021-01-21T04:00:25.97 0.1 undecidable manual P 342 43.7229 94 -0.14 92
IV.T1299.HNN. 2021-01-21T04:00:25.83 0.6 undecidable manual S 0 19.4694 106 0.15 48
IV.FAGN.HHZ. 2021-01-21T04:00:24.82 0.3 undecidable manual P 131 32.8449 96 0.4 66
IV.CAMP.HHE. 2021-01-21T04:00:24.10 0.6 undecidable manual S 51 13.5753 119 -0.12 48
MN.AQU.HNN. 2021-01-21T04:00:24.33 0.6 undecidable manual S 139 15.4734 114 -0.33 46
IV.TERO.HHZ. 2021-01-21T04:00:23.98 0.1 undecidable manual P 55 32.1456 96 -0.34 89
IV.FIAM.HHZ. 2021-01-21T04:00:23.07 0.6 undecidable manual P 212 24.9528 100 -0.16 47
IV.LNSS.HHZ. 2021-01-21T04:00:23.20 0.1 undecidable manual P 309 25.3524 99 -0.08 96
MN.AQU.HNN. 2021-01-21T04:00:22.20 0.3 undecidable manual P 139 15.4734 114 0.38 69
IT.RMVT.HGZ. 2021-01-21T04:00:22.35 3.0 undecidable manual P -9.99 0
IV.RM33.EHZ. 2021-01-21T04:00:22.76 0.6 undecidable manual S 316 7.7811 141 -0.26 47
IV.T1299.HNN. 2021-01-21T04:00:22.49 0.3 undecidable manual P 0 19.4694 106 0.09 72
IV.GIGS.HHN. 2021-01-21T04:00:22.78 0.1 undecidable manual P 91 23.9538 100 -0.29 92
IV.SMA1.EHZ. 2021-01-21T04:00:22.51 0.1 undecidable manual P 13 19.6692 105 0.09 96
IV.CAMP.HHE. 2021-01-21T04:00:21.57 0.1 undecidable manual P 51 13.5753 119 0.01 99
IV.RM33.EHZ. 2021-01-21T04:00:20.88 0.1 positive manual P 316 7.7811 141 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:1.3 0.00020899999999999998 1.52 AML other m 2021-01-21T04:00:22.10
IV.RM33.EHE. ML:1.1 0.00015200000000000004 1.5 AML other m 2021-01-21T04:00:22.11
IV.RM33.EHN. ML:1.3 0.0002245 0.26 AML other m 2021-01-21T04:00:22.98
IV.RM33.HNN. ML:1.3 0.00023249999999999999 0.28 AML other m 2021-01-21T04:00:22.99
IV.SMA1.EHN. ML:1.7 0.00032950000000000004 0.32 AML other m 2021-01-21T04:00:26.51
IV.SMA1.EHE. ML:1.8 0.00039449999999999994 0.26 AML other m 2021-01-21T04:00:26.54
IV.LNSS.HHN. ML:1.1 0.00006570000000000001 0.82 AML other m 2021-01-21T04:00:27.66
IV.LNSS.HHE. ML:1.0 0.00006120000000000001 0.58 AML other m 2021-01-21T04:00:29.73
IV.NRCA.HHN. ML:1.2 0.0000465 0.42 AML other m 2021-01-21T04:00:32.15
IV.NRCA.HHE. ML:1.2 0.00004655 0.1 AML other m 2021-01-21T04:00:32.66
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