Earthquake with magnitude of ML 1.0 on date 14-05-2021 and time 16:20:29 (Italy) in region 4 km W Accumoli (RI)

A magnitude ML 1.0 earthquake occured in region: 4 km W Accumoli (RI), on

  • 14-05-2021 14:20:29 (UTC)
  • 14-05-2021 16:20:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6860, 13.2080 at 14 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.

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
Cittareale RI 8 482 1149
Amatrice RI 9 2657 3806
Arquata del Tronto AP 12 1178 4984
Norcia PG 15 4957 9941
Cascia PG 16 3217 13158
Montereale AQ 18 2581 15739
Acquasanta Terme AP 19 2916 18655
Campotosto AQ 20 542 19197
Capitignano AQ 20 665 19862

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NW of L'Aquila (69753 inhabitants)
41 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km W of Pescara (121014 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
87 Km W of Chieti (51815 inhabitants)
95 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
Reviewed
Rev100
ML 1.0 2021-05-14
14:20:29
42.686 13.2077 15 2021-05-14
14:25:14
Sala Sismica INGV-Roma 90093181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-14 14:20:29 ± 0.16
Latitude 42.6860 ± 0.0072
Longitude 13.2077 ± 0.0086
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90093181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 682
Semi-minor axis of confidence ellipse (meter) 383
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 1
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.29768
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 90093181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-14 14:25:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-05-14T14:20:40.74 0.6 undecidable manual S 102 33.0447 100 -0.32 46
IV.NRCA.HHZ. 2021-05-14T14:20:37.06 0.3 undecidable manual S 335 18.0708 115 -0.14 77
IV.RM33.EHZ. 2021-05-14T14:20:37.63 0.3 undecidable manual S 178 19.6692 112 0.03 77
IV.MTRA.EHZ. 2021-05-14T14:20:36.68 0.3 undecidable manual S 63 17.2716 117 -0.34 72
IV.TERO.HHZ. 2021-05-14T14:20:36.45 1.0 undecidable manual P 102 33.0447 100 0.19 25
IV.LNSS.HHZ. 2021-05-14T14:20:36.37 0.3 undecidable manual S 236 16.4724 118 -0.46 71
IV.SMA1.EHZ. 2021-05-14T14:20:35.84 0.3 undecidable manual S 121 12.0768 130 -0.02 77
IV.RM33.EHZ. 2021-05-14T14:20:34.36 0.6 undecidable manual P 178 19.6692 112 0.1 51
IV.LNSS.HHZ. 2021-05-14T14:20:34.03 0.3 undecidable manual P 236 16.4724 118 0.22 74
IV.MTRA.EHZ. 2021-05-14T14:20:34.07 0.6 undecidable manual P 63 17.2716 117 0.15 51
IV.NRCA.HHZ. 2021-05-14T14:20:34.18 0.1 negative manual P 335 18.0708 115 0.15 100
IV.SMA1.EHZ. 2021-05-14T14:20:33.66 0.3 negative manual P 121 12.0768 130 0.4 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.1 0.00011475 0.68 AML other m 2021-05-14T14:20:36.35
IV.SMA1.EHN. ML:0.9 0.0000678 0.54 AML other m 2021-05-14T14:20:36.40
IV.NRCA.HHE. ML:1.0 0.00007775 0.16 AML other m 2021-05-14T14:20:37.19
IV.NRCA.HHN. ML:1.0 0.0000655 0.1 AML other m 2021-05-14T14:20:37.33
IV.LNSS.HHE. ML:1.0 0.0000762 1.36 AML other m 2021-05-14T14:20:37.30
IV.RM33.EHE. ML:1.1 0.00007795 0.98 AML other m 2021-05-14T14:20:37.91
IV.RM33.EHN. ML:0.9 0.000054550000000000005 0.12 AML other m 2021-05-14T14:20:38.27
IV.LNSS.HHN. ML:0.9 0.00006175 0.42 AML other m 2021-05-14T14:20:47.17
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