Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 18-02-2021 and time 01:19:52 (Italy) in region 2 km N Barete (AQ)

A magnitude ML 1.0 earthquake occured in region: 2 km N Barete (AQ), on

  • 18-02-2021 00:19:52 (UTC)
  • 18-02-2021 01:19:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4660, 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 2 737 737
Pizzoli AQ 4 4326 5063
Cagnano Amiterno AQ 5 1369 6432
Capitignano AQ 6 665 7097
Montereale AQ 7 2581 9678
Scoppito AQ 11 3727 13405
Campotosto AQ 13 542 13947
Borbona RI 13 617 14564
L'Aquila AQ 16 69753 84317
Posta RI 16 694 85011
Antrodoco RI 17 2588 87599
Amatrice RI 18 2657 90256
Micigliano RI 19 127 90383
Crognaleto TE 19 1297 91680
Borgo Velino RI 19 972 92652
Tornimparte AQ 20 3187 95839
Cittareale RI 20 482 96321
Lucoli AQ 20 1011 97332

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 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)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
72 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)
96 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 1.0 2021-02-18
00:19:52		 42.4663 13.2802 13 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89214171
Reviewed
Rev100 		ML 1.1 2021-02-18
00:19:52		 42.457 13.258 15 2021-02-18
00:30:35		 Sala Sismica INGV-Roma 87259581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-18 00:19:52 ± 0.07
Latitude 42.4663 ± 0.0036
Longitude 13.2802 ± 0.0049
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 89214171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 456
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
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 25
Number of defining phases 25
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) 0.06475
Epicentral distance of station farthest from the epicenter (degree) 0.43437
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 89214171
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-18 14:57:31

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 87259581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-18 00:30:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-02-18T00:20:08.00 0.6 undecidable manual S 5 48.2184 94 0.33 44
IV.NRCA.HHZ. 2021-02-18T00:20:06.29 0.6 undecidable manual S 342 42.9237 94 0.02 47
IV.GAVE.EHZ. 2021-02-18T00:20:05.03 0.6 undecidable manual S 309 40.3263 95 -0.54 43
IV.TERO.HHZ. 2021-02-18T00:20:02.85 0.6 undecidable manual S 57 31.6461 97 -0.42 44
IV.LNSS.HHZ. 2021-02-18T00:20:01.44 0.6 undecidable manual S 308 24.753 100 -0.02 49
IV.FIAM.HHZ. 2021-02-18T00:20:01.62 0.6 undecidable manual S 211 25.752 100 -0.09 48
IV.MMO1.EHZ. 2021-02-18T00:20:01.12 0.1 undecidable manual P 5 48.2184 94 -0.07 92
IV.T1299.HNE. 2021-02-18T00:20:00.15 0.6 undecidable manual S 0 18.6702 108 0.29 47
IV.SMA1.EHZ. 2021-02-18T00:20:00.17 0.6 undecidable manual S 14 18.7701 108 0.27 47
IV.GIGS.HHN. 2021-02-18T00:20:00.95 0.3 undecidable manual S 93 23.9538 101 -0.3 69
IV.GAVE.EHZ. 2021-02-18T00:20:00.17 0.3 undecidable manual P 309 40.3263 95 0.2 68
IV.NRCA.HHZ. 2021-02-18T00:20:00.24 0.1 undecidable manual P 342 42.9237 94 -0.14 92
IV.FAGN.HHZ. 2021-02-18T00:19:59.91 0.6 undecidable manual P 132 33.3444 96 1 35
MN.AQU.HNZ. 2021-02-18T00:19:59.17 0.6 undecidable manual S 141 16.0728 113 -0.06 49
IV.TERO.HHZ. 2021-02-18T00:19:58.59 0.1 undecidable manual P 57 31.6461 97 -0.06 95
IV.CAMP.HHN. 2021-02-18T00:19:58.42 0.6 undecidable manual S 54 13.0758 122 -0.09 49
IV.RM33.EHZ. 2021-02-18T00:19:57.04 0.6 undecidable manual S 311 7.1928 144 -0.31 48
IV.FIAM.HHZ. 2021-02-18T00:19:57.66 0.3 undecidable manual P 211 25.752 100 -0.09 72
IV.GIGS.HHN. 2021-02-18T00:19:57.36 0.3 undecidable manual P 93 23.9538 101 -0.12 71
IV.LNSS.HHZ. 2021-02-18T00:19:57.60 0.1 undecidable manual P 308 24.753 100 0 98
IV.T1299.HNE. 2021-02-18T00:19:56.79 0.1 undecidable manual P 0 18.6702 108 0.11 97
MN.AQU.HNZ. 2021-02-18T00:19:56.38 0.1 undecidable manual P 141 16.0728 113 0.06 98
IV.SMA1.EHZ. 2021-02-18T00:19:56.79 0.1 undecidable manual P 14 18.7701 108 0.09 97
IV.CAMP.HHN. 2021-02-18T00:19:56.06 0.3 undecidable manual P 54 13.0758 122 0.16 73
IV.RM33.EHZ. 2021-02-18T00:19:55.25 0.1 undecidable manual P 311 7.1928 144 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.2 0.0001955 0.24 AML other m 2021-02-18T00:19:57.26
IV.RM33.EHN. ML:1.3 0.000213 0.2 AML other m 2021-02-18T00:19:57.13
IV.SMA1.EHN. ML:1.0 0.00006515 0.38 AML other m 2021-02-18T00:20:00.63
IV.SMA1.EHE. ML:1.1 0.0000925 0.28 AML other m 2021-02-18T00:20:00.89
IV.LNSS.HHN. ML:0.9 0.00004685 1.56 AML other m 2021-02-18T00:20:01.89
IV.LNSS.HHE. ML:0.8 0.0000354 0.5 AML other m 2021-02-18T00:20:02.16
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