Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 14-05-2021 and time 22:20:47 (Italy) in region 4 km E Accumoli (RI)

A magnitude ML 1.3 earthquake occured in region: 4 km E Accumoli (RI), on

  • 14-05-2021 20:20:47 (UTC)
  • 14-05-2021 22:20:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7100, 13.2950 at 10 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.

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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
Accumoli RI 4 667 667
Arquata del Tronto AP 7 1178 1845
Amatrice RI 9 2657 4502
Acquasanta Terme AP 12 2916 7418
Cittareale RI 15 482 7900
Montegallo AP 15 523 8423
Valle Castellana TE 17 977 9400
Campotosto AQ 18 542 9942
Norcia PG 19 4957 14899
Rocca Santa Maria TE 19 537 15436
Cortino TE 20 656 16092

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km W of Teramo (54892 inhabitants)
41 Km N of L'Aquila (69753 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
56 Km E of Terni (111501 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
80 Km W of Pescara (121014 inhabitants)
82 Km W of Chieti (51815 inhabitants)
86 Km SE of Perugia (166134 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 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
Reviewed
Rev100 		ML 1.3 2021-05-14
20:20:47		 42.7098 13.2953 10 2021-05-14
20:29:40		 Sala Sismica INGV-Roma 90099191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-14 20:20:47 ± 0.08
Latitude 42.7098 ± 0.0036
Longitude 13.2953 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90099191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 482
Semi-minor axis of confidence ellipse (meter) 347
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.18166
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 90099191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-14 20:29:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-05-14T20:21:02.01 0.3 undecidable manual S 350 43.0236 50 0.06 71
IV.CESI.HHZ. 2021-05-14T20:21:02.72 0.3 undecidable manual S 316 45.621 50 0.08 71
IV.MF5.EHZ. 2021-05-14T20:21:00.17 0.3 undecidable manual S 23 33.6441 50 0.74 60
IV.FDMO.HHZ. 2021-05-14T20:21:00.84 0.3 undecidable manual S 335 40.0266 50 -0.29 68
IV.GAVE.EHZ. 2021-05-14T20:20:59.20 0.6 undecidable manual S 267 32.745 50 -0.01 49
IV.TERO.HHZ. 2021-05-14T20:20:57.19 0.6 undecidable manual S 111 26.9508 50 -0.47 45
IV.RM33.EHZ. 2021-05-14T20:20:56.78 0.3 undecidable manual S 197 23.2545 114 0.16 72
IV.MC2.EHZ. 2021-05-14T20:20:56.78 0.3 undecidable manual S 339 23.9538 113 -0.07 74
IV.CESI.HHZ. 2021-05-14T20:20:56.30 0.1 undecidable manual P 316 45.621 50 -0.08 94
IV.LNSS.HHZ. 2021-05-14T20:20:56.96 0.6 undecidable manual S 240 23.9538 113 0.11 49
IV.NRCA.HHZ. 2021-05-14T20:20:55.43 0.3 undecidable manual S 313 20.1687 117 -0.22 72
IV.FDMO.HHZ. 2021-05-14T20:20:55.33 1.0 undecidable manual P 335 40.0266 50 -0.18 23
IV.CSP1.EHZ. 2021-05-14T20:20:55.82 0.3 positive manual P 350 43.0236 50 -0.15 70
IV.MF5.EHZ. 2021-05-14T20:20:54.88 0.6 negative manual P 23 33.6441 50 0.36 45
IV.GAVE.EHZ. 2021-05-14T20:20:54.55 1.0 positive manual P 267 32.745 50 0.15 24
IV.MC2.EHZ. 2021-05-14T20:20:53.06 1.0 negative manual P 339 23.9538 113 0.03 25
IV.LNSS.HHZ. 2021-05-14T20:20:53.12 0.1 undecidable manual P 240 23.9538 113 0.09 98
IV.TERO.HHZ. 2021-05-14T20:20:53.33 0.1 undecidable manual P 111 26.9508 50 -0.17 96
IV.RM33.EHZ. 2021-05-14T20:20:53.01 1.0 positive manual P 197 23.2545 114 0.11 24
IV.NRCA.HHZ. 2021-05-14T20:20:52.34 0.1 negative manual P 313 20.1687 117 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.3 0.000149 0.18 AML other m 2021-05-14T20:20:55.70
IV.NRCA.HHN. ML:1.3 0.00014 0.08 AML other m 2021-05-14T20:20:55.62
IV.LNSS.HHN. ML:1.1 0.00008450369 0.32 AML other m 2021-05-14T20:20:57.20
IV.LNSS.HHE. ML:1.0 0.000060974645 0.1152 AML other m 2021-05-14T20:20:57.57
IV.NRCA.HNE. ML:1.2 0.00011429869 0.512 AML other m 2021-05-14T20:21:00.64
IV.NRCA.HNN. ML:1.3 0.00016168484999999998 0.768 AML other m 2021-05-14T20:20:53.56
IV.RM33.EHE. ML:0.7 0.0000280772335 0.2048 AML other m 2021-05-14T20:20:57.43
IV.RM33.EHN. ML:0.4 0.000016366873149999998 44.48 AML other m 2021-05-14T20:20:52.65
IV.RM33.HNE. ML:1.4 0.00015397745 0.9088 AML other m 2021-05-14T20:21:06.39
IV.RM33.HNN. ML:1.4 0.000144346475 0.7936 AML other m 2021-05-14T20:21:02.23
IV.LNSS.HNE. ML:1.4 0.0001590036 1.088 AML other m 2021-05-14T20:20:54.48
IV.LNSS.HNN. ML:1.3 0.00013632898499999998 0.6272 AML other m 2021-05-14T20:21:00.16
IV.TERO.HHE. ML:2.0 0.0006101630500000001 0.3328 AML other m 2021-05-14T20:21:04.65
IV.TERO.HHN. ML:1.0 0.00006088592500000001 1.536 AML other m 2021-05-14T20:20:52.47
IV.TERO.HNE. ML:1.3 0.00011202865000000001 0.6528 AML other m 2021-05-14T20:21:01.38
IV.TERO.HNN. ML:1.4 0.000128390855 0.8448 AML other m 2021-05-14T20:21:08.01
IV.GAVE.EHE. ML:1.0 0.000039004035 0.192 AML other m 2021-05-14T20:21:01.17
IV.GAVE.EHN. ML:1.0 0.000044298325 0.192 AML other m 2021-05-14T20:21:00.40
IV.GAVE.HNE. ML:1.3 0.000092433195 0.5376 AML other m 2021-05-14T20:21:06.74
IV.GAVE.HNN. ML:1.4 0.00010362715499999999 45.0688 AML other m 2021-05-14T20:20:54.19
IV.MF5.EHE. ML:1.6 0.0001807491 1.408 AML other m 2021-05-14T20:20:59.56
IV.MF5.EHN. ML:1.4 0.000094017225 1.728 AML other m 2021-05-14T20:21:04.91
IV.FDMO.HHE. ML:0.8 0.000018091885 0.2176 AML other m 2021-05-14T20:21:02.02
IV.FDMO.HHN. ML:0.9 0.00003100883 0.2432 AML other m 2021-05-14T20:21:01.36
IV.CSP1.EHE. ML:1.5 0.000105414409 1.1008 AML other m 2021-05-14T20:20:55.30
IV.CSP1.EHN. ML:1.5 0.00009045984 1.5872 AML other m 2021-05-14T20:21:00.83
IV.CESI.HNE. ML:1.6 0.0001248581 0.8704 AML other m 2021-05-14T20:20:57.94
IV.CESI.HNN. ML:2.9 0.002147616 1.152 AML other m 2021-05-14T20:21:10.84
IV.CESI.HHE. ML:0.9 0.000024478535 1.4592 AML other m 2021-05-14T20:20:59.25
IV.CESI.HHN. ML:1.1 0.000041731690000000005 0.2048 AML other m 2021-05-14T20:21:03.45
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