Earthquake with magnitude of ML 1.2 on date 21-02-2020 and time 07:46:35 (UTC) in region 9 km W Accumoli (RI)

A magnitude ML 1.2 earthquake occured in region: 9 km W Accumoli (RI), on

  • 21-02-2020 07:46:35 (UTC)
  • 21-02-2020 08:46:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7020, 13.1400 at 18 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 9 667 667
Cittareale RI 10 482 1149
Cascia PG 10 3217 4366
Norcia PG 11 4957 9323
Amatrice RI 15 2657 11980
Arquata del Tronto AP 15 1178 13158
Monteleone di Spoleto PG 16 599 13757
Poggiodomo PG 17 117 13874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Terni (111501 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
45 Km SE of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km W of Chieti (51815 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 1.2 2020-02-21
07:46:35
42.7023 13.1395 18 2020-02-21
07:51:20
Sala Sismica INGV-Roma 76693991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-21 07:46:35 ± 0.19
Latitude 42.7023 ± 0.0045
Longitude 13.1395 ± 0.0098
Depth (km) 18 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76693991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 850
Semi-minor axis of confidence ellipse (meter) 102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 206
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35074
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:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 76693991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-21 07:51:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-02-21T07:46:48.46 0.3 undecidable manual S 103 38.9277 104 0 74
IV.MMO1.EHZ. 2020-02-21T07:46:45.26 1.0 undecidable manual S 35 26.6511 114 -0.11 25
IV.RM33.EHZ. 2020-02-21T07:46:44.07 0.6 undecidable manual S 164 22.2555 119 -0.25 49
IV.MC2.EHZ. 2020-02-21T07:46:44.69 1.0 undecidable manual S 10 23.5542 117 0.07 25
IV.SMA1.EHZ. 2020-02-21T07:46:43.43 0.6 undecidable manual S 116 17.871 127 0.11 51
IV.TERO.HHZ. 2020-02-21T07:46:43.06 0.1 undecidable manual P 103 38.9277 104 0.12 97
IV.CSP1.EHZ. 2020-02-21T07:46:42.97 1.0 undecidable manual S -0.24 0.72
IV.RM33.EHZ. 2020-02-21T07:46:40.52 1.0 negative manual P 164 22.2555 119 -0.03 26
IV.MC2.EHZ. 2020-02-21T07:46:40.79 0.1 undecidable manual P 10 23.5542 117 0.07 100
IV.MMO1.EHZ. 2020-02-21T07:46:40.93 0.1 undecidable manual P 35 26.6511 114 -0.22 98
IV.SMA1.EHZ. 2020-02-21T07:46:40.18 1.0 positive manual P 116 17.871 127 0.21 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:0.7 0.000030273495 0.1792 AML other m 2020-02-21T07:46:45.36
IV.RM33.EHN. ML:0.7 0.000025688229999999998 0.1024 AML other m 2020-02-21T07:46:44.38
IV.RM33.HNE. ML:1.5 0.000168353765 0.6528 AML other m 2020-02-21T07:46:49.16
IV.RM33.HNN. ML:1.4 0.00014538041 0.6208 AML other m 2020-02-21T07:46:42.87
IV.TERO.HHE. ML:0.8 0.000019352865 0.1408 AML other m 2020-02-21T07:46:49.50
IV.TERO.HHN. ML:0.9 0.000026903815000000003 0.0768 AML other m 2020-02-21T07:46:49.30
IV.TERO.HNE. ML:1.5 0.00011438552 0.8704 AML other m 2020-02-21T07:47:03.07
IV.TERO.HNN. ML:1.8 0.0002131528 1.2352 AML other m 2020-02-21T07:47:05.18
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download