Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 30-03-2020 and time 23:19:45 (UTC) in region 5 km NW Accumoli (RI)

A magnitude ML 1.0 earthquake occured in region: 5 km NW Accumoli (RI), on

  • 30-03-2020 23:19:45 (UTC)
  • 31-03-2020 01:19:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7300, 13.2090 at 8 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 5 667 667
Arquata del Tronto AP 9 1178 1845
Norcia PG 12 4957 6802
Amatrice RI 13 2657 9459
Cittareale RI 13 482 9941
Cascia PG 16 3217 13158
Montegallo AP 16 523 13681
Acquasanta Terme AP 17 2916 16597
Castelsantangelo sul Nera MC 19 281 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
48 Km SE of Foligno (57155 inhabitants)
50 Km E of Terni (111501 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
87 Km W of Pescara (121014 inhabitants)
89 Km W of Chieti (51815 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
97 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 2020-03-30
23:19:45		 42.7298 13.2088 8 2020-03-30
23:26:25		 Sala Sismica INGV-Roma 77717961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-30 23:19:45 ± 0.15
Latitude 42.7298 ± 0.0018
Longitude 13.2088 ± 0.0037
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77717961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 70
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 105
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.22033
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 77717961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-30 23:26:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LRP.EHZ. 2020-03-30T23:20:18.22 3.0 undecidable manual S -4.75 0
IV.RM33.EHZ. 2020-03-30T23:19:54.48 0.1 undecidable manual S 179 24.4533 107 -0.02 98
IV.VCEL.EHZ. 2020-03-30T23:19:54.51 3.0 undecidable manual P -2.69 0
IV.MMO1.EHZ. 2020-03-30T23:19:53.17 0.1 undecidable manual S 27 21.0678 110 -0.21 95
IV.MC2.EHZ. 2020-03-30T23:19:53.26 0.1 undecidable manual S 355 20.1687 111 0.17 96
IV.CSP1.EHZ. 2020-03-30T23:19:52.95 3.0 undecidable manual P -0.08 0
IV.LNSS.HNN. 2020-03-30T23:19:52.87 0.1 undecidable manual S 224 19.6692 111 -0.05 98
IV.MTRA.EHZ. 2020-03-30T23:19:51.60 0.1 undecidable manual S 79 15.5733 116 -0.01 100
IV.NRCA.HHZ. 2020-03-30T23:19:51.07 0.1 undecidable manual S 326 13.875 119 -0.01 100
IV.MC2.EHZ. 2020-03-30T23:19:50.05 1.0 undecidable manual P 355 20.1687 111 0.13 24
IV.RM33.EHZ. 2020-03-30T23:19:50.68 0.6 positive manual P 179 24.4533 107 -0.05 49
IV.LNSS.HNN. 2020-03-30T23:19:49.77 0.1 undecidable manual P 224 19.6692 111 -0.05 98
IV.MMO1.EHZ. 2020-03-30T23:19:49.96 0.3 positive manual P 27 21.0678 110 -0.12 72
IV.MTRA.EHZ. 2020-03-30T23:19:49.18 0.6 positive manual P 79 15.5733 116 0.12 49
IV.SMA1.EHZ. 2020-03-30T23:19:49.29 0.6 negative manual P 137 15.0738 117 0.31 47
IV.NRCA.HHZ. 2020-03-30T23:19:48.81 0.6 undecidable manual P 326 13.875 119 0.05 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.3 0.00022950000000000002 0.08 AML other m 2020-03-30T23:19:51.15
IV.NRCA.HHE. ML:1.4 0.000292 0.18 AML other m 2020-03-30T23:19:51.18
IV.MTRA.EHE. ML:0.7 0.00005515 1.1 AML other m 2020-03-30T23:19:51.24
IV.MTRA.EHN. ML:0.7 0.0000485 1.1 AML other m 2020-03-30T23:19:52.78
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