Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 09-05-2021 and time 07:26:47 (UTC) in region 3 km N Barete (AQ)

A magnitude ML 1.4 earthquake occured in region: 3 km N Barete (AQ), on

  • 09-05-2021 07:26:47 (UTC)
  • 09-05-2021 09:26:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4810, 13.2900 at 11 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 3 737 737
Capitignano AQ 5 665 1402
Pizzoli AQ 5 4326 5728
Cagnano Amiterno AQ 6 1369 7097
Montereale AQ 6 2581 9678
Campotosto AQ 11 542 10220
Scoppito AQ 12 3727 13947
Borbona RI 13 617 14564
Amatrice RI 17 2657 17221
Posta RI 17 694 17915
L'Aquila AQ 17 69753 87668
Crognaleto TE 17 1297 88965
Antrodoco RI 19 2588 91553
Cittareale RI 19 482 92035
Micigliano RI 20 127 92162

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NW of L'Aquila (69753 inhabitants)
39 Km SW of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km SE of Foligno (57155 inhabitants)
74 Km W of Chieti (51815 inhabitants)
76 Km W of Pescara (121014 inhabitants)
93 Km NE of Roma (2864731 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
98 Km NE of Velletri (53303 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 1.4 2021-05-09
07:26:47		 42.4808 13.2903 11 2021-12-29
11:12:18		 Bollettino Sismico Italiano INGV 93862161
Reviewed
Rev100 		ML 1.4 2021-05-09
07:26:47		 42.4698 13.2962 11 2021-05-09
08:05:50		 Sala Sismica INGV-Roma 89934531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-09 07:26:47 ± 0.09
Latitude 42.4808 ± 0.0045
Longitude 13.2903 ± 0.0073
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93862161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 593
Semi-minor axis of confidence ellipse (meter) 490
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.61424
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 93862161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-08 22:49:35

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 89934531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-09 08:05:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2021-05-09T07:27:23.06 3.0 undecidable manual S -0.08 0
IV.CSP1.EHZ. 2021-05-09T07:27:08.83 0.6 undecidable manual S 354 68.1762 50 0.84 35
IV.MC2.EHZ. 2021-05-09T07:27:03.59 0.6 undecidable manual S 350 48.5181 50 0.84 37
IV.T0110.HHE. 2021-05-09T07:27:03.62 0.6 undecidable manual S 125 48.618 50 0.83 37
IV.RMP.HHZ. 2021-05-09T07:27:02.47 3.0 positive manual P -0.1 0
IV.CSP1.EHZ. 2021-05-09T07:26:59.30 0.6 undecidable manual P 354 68.1762 50 0.04 45
IV.TERO.HHZ. 2021-05-09T07:26:57.35 0.3 undecidable manual S 58 30.0477 50 -0.49 66
IV.MTRA.EHZ. 2021-05-09T07:26:57.86 0.3 undecidable manual S 16 31.8459 50 -0.44 66
IV.FIAM.HNZ. 2021-05-09T07:26:56.69 0.6 undecidable manual S 211 27.5502 50 -0.47 44
IV.T0110.HHE. 2021-05-09T07:26:56.16 0.3 undecidable manual P 125 48.618 50 -0.1 69
IV.MC2.EHZ. 2021-05-09T07:26:56.29 0.6 undecidable manual P 350 48.5181 50 0.06 46
IV.LNSS.HHZ. 2021-05-09T07:26:56.29 0.3 undecidable manual S 304 24.5532 50 -0.06 72
IV.GIGS.HJZ. 2021-05-09T07:26:55.63 0.6 undecidable manual S 97 23.3544 50 -0.4 45
IV.T1299.HNZ. 2021-05-09T07:26:54.36 0.6 undecidable manual S 358 17.0718 50 0.01 49
IV.SMA1.EHZ. 2021-05-09T07:26:54.63 0.6 undecidable manual S 12 16.9719 50 0.29 47
MN.AQU.HNZ. 2021-05-09T07:26:54.82 0.6 undecidable manual S 146 16.872 50 0.5 45
IV.TERO.HHZ. 2021-05-09T07:26:53.15 0.3 undecidable manual P 58 30.0477 50 -0.25 69
IV.MTRA.EHZ. 2021-05-09T07:26:53.32 0.3 undecidable manual P 16 31.8459 50 -0.34 67
IV.LNSS.HHZ. 2021-05-09T07:26:52.35 0.3 undecidable manual P 304 24.5532 50 -0.19 71
IV.CAMP.HHZ. 2021-05-09T07:26:52.89 0.6 undecidable manual S 58 11.4774 134 0.04 50
IV.FIAM.HNZ. 2021-05-09T07:26:52.89 0.6 undecidable manual P 211 27.5502 50 -0.12 47
IV.GIGS.HJZ. 2021-05-09T07:26:52.08 0.3 undecidable manual P 97 23.3544 50 -0.28 69
IV.RM33.EHZ. 2021-05-09T07:26:51.71 0.3 undecidable manual S 297 6.993 148 -0.14 73
MN.AQU.HNZ. 2021-05-09T07:26:51.72 0.3 undecidable manual P 146 16.872 50 0.35 69
IV.T1299.HNZ. 2021-05-09T07:26:51.45 0.3 undecidable manual P 358 17.0718 50 0.06 73
IV.SMA1.EHZ. 2021-05-09T07:26:51.58 0.3 undecidable manual P 12 16.9719 50 0.2 71
IV.CAMP.HHZ. 2021-05-09T07:26:50.78 0.3 undecidable manual P 58 11.4774 134 0.26 71
IV.RM33.EHZ. 2021-05-09T07:26:49.98 0.1 undecidable manual P 297 6.993 148 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNN. ML:1.4 0.000354 0.12 AML other m 2021-05-09T07:26:51.88
IV.RM33.EHN. ML:1.4 0.0003715 0.12 AML other m 2021-05-09T07:26:51.88
IV.RM33.HNE. ML:1.6 0.0005549999999999999 1.74 AML other m 2021-05-09T07:26:51.89
IV.RM33.EHE. ML:1.6 0.0005074214 1.76 AML other m 2021-05-09T07:26:51.02
IV.TERO.HHE. ML:0.9 0.0000409 1.02 AML other m 2021-05-09T07:26:57.92
IV.MTRA.EHN. ML:1.6 0.0001735 1.88 AML other m 2021-05-09T07:26:58.99
IV.MTRA.EHE. ML:1.5 0.0001565 0.2 AML other m 2021-05-09T07:26:58.39
IV.TERO.HHN. ML:1.1 0.00005275 0.38 AML other m 2021-05-09T07:26:58.73
IV.CSP1.EHE. ML:1.5 0.0000477 0.42 AML other m 2021-05-09T07:27:11.76
IV.CSP1.EHN. ML:1.4 0.0000387 0.42 AML other m 2021-05-09T07:27:17.51
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