Earthquake with magnitude of ML 1.2 on date 18-03-2020 and time 08:28:25 (UTC) in region 6 km W Accumoli (RI)

A magnitude ML 1.2 earthquake occured in region: 6 km W Accumoli (RI), on

  • 18-03-2020 08:28:25 (UTC)
  • 18-03-2020 09:28:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6890, 13.1750 at 13 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 6 667 667
Cittareale RI 8 482 1149
Amatrice RI 11 2657 3806
Norcia PG 13 4957 8763
Cascia PG 14 3217 11980
Arquata del Tronto AP 14 1178 13158
Monteleone di Spoleto PG 19 599 13757
Montereale AQ 19 2581 16338
Posta RI 19 694 17032
Poggiodomo PG 20 117 17149
Borbona RI 20 617 17766

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NW of L'Aquila (69753 inhabitants)
44 Km W of Teramo (54892 inhabitants)
45 Km E of Terni (111501 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
89 Km W of Pescara (121014 inhabitants)
90 Km W of Chieti (51815 inhabitants)
93 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 1.2 2020-03-18
08:28:25
42.6887 13.1748 13 2020-03-18
08:33:43
Sala Sismica INGV-Roma 77343421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-18 08:28:25 ± 0.1
Latitude 42.6887 ± 0.0045
Longitude 13.1748 ± 0.0086
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77343421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 660
Semi-minor axis of confidence ellipse (meter) 192
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.13040
Epicentral distance of station farthest from the epicenter (degree) 0.35343
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 77343421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-18 08:33:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-03-18T08:28:36.66 0.6 undecidable manual S 102 35.742 96 -0.4 45
IV.MMO1.EHZ. 2020-03-18T08:28:34.81 0.6 undecidable manual S 28 26.4513 100 0.21 47
IV.FDMO.HHZ. 2020-03-18T08:28:33.06 1.0 undecidable manual P 350 39.2274 95 0.55 21
IV.RM33.EHZ. 2020-03-18T08:28:32.76 0.6 undecidable manual S 171 20.1687 106 -0.21 48
IV.TERO.HHZ. 2020-03-18T08:28:31.82 0.6 undecidable manual P 102 35.742 96 -0.15 47
IV.LNSS.HHZ. 2020-03-18T08:28:31.45 0.6 undecidable manual S 229 14.4744 118 -0.11 49
IV.SMA1.EHZ. 2020-03-18T08:28:31.82 0.6 undecidable manual S 116 14.5743 118 0.24 47
IV.NRCA.HHZ. 2020-03-18T08:28:31.78 0.6 undecidable manual S 343 16.7721 113 -0.34 47
IV.MMO1.EHZ. 2020-03-18T08:28:30.72 1.0 negative manual P 28 26.4513 100 0.17 24
IV.NRCA.HHZ. 2020-03-18T08:28:29.15 0.1 undecidable manual P 343 16.7721 113 0.03 100
IV.RM33.EHZ. 2020-03-18T08:28:29.63 1.0 negative manual P 171 20.1687 106 0.02 25
IV.SMA1.EHZ. 2020-03-18T08:28:28.92 0.6 undecidable manual P 116 14.5743 118 0.11 49
IV.LNSS.HHZ. 2020-03-18T08:28:28.91 0.1 positive manual P 229 14.4744 118 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.3 0.0001535 0.16 AML other m 2020-03-18T08:28:31.66
IV.NRCA.HHN. ML:1.2 0.00011999999999999999 0.12 AML other m 2020-03-18T08:28:31.91
IV.SMA1.EHE. ML:1.4 0.0001905 1.82 AML other m 2020-03-18T08:28:31.99
IV.SMA1.EHN. ML:1.1 0.00010655 0.16 AML other m 2020-03-18T08:28:32.03
IV.LNSS.HHE. ML:1.2 0.0001275 1.88 AML other m 2020-03-18T08:28:32.98
IV.NRCA.HHE. ML:1.3 0.00015150000000000002 0.72 AML other m 2020-03-18T08:28:32.10
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