Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 03-04-2019 and time 00:52:58 (Italy) in region 3 km W Accumoli (RI)

A magnitude ML 0.8 earthquake occured in region: 3 km W Accumoli (RI), on

  • 02-04-2019 22:52:58 (UTC)
  • 03-04-2019 00:52:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7060, 13.2140 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 3 667 667
Arquata del Tronto AP 10 1178 1845
Amatrice RI 10 2657 4502
Cittareale RI 11 482 4984
Norcia PG 14 4957 9941
Cascia PG 16 3217 13158
Acquasanta Terme AP 18 2916 16074
Montegallo AP 18 523 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
42 Km NW of L'Aquila (69753 inhabitants)
49 Km E of Terni (111501 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
88 Km W of Chieti (51815 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
96 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 0.8 2019-04-02
22:52:58		 42.7057 13.2143 8 2019-04-02
23:07:18		 Sala Sismica INGV-Roma 67205471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-02 22:52:58 ± 0.08
Latitude 42.7057 ± 0.0027
Longitude 13.2143 ± 0.0049
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 67205471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 378
Semi-minor axis of confidence ellipse (meter) 193
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 108
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.11601
Epicentral distance of station farthest from the epicenter (degree) 0.33455
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:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 67205471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-02 23:07:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2019-04-02T22:53:11.92 0.3 undecidable manual S 32 37.1295 50 0.33 69
IV.GAVE.EHZ. 2019-04-02T22:53:07.99 0.3 undecidable manual S 267 26.1516 106 0.09 74
IV.RM33.EHZ. 2019-04-02T22:53:06.25 0.3 undecidable manual S 180 21.7671 109 -0.22 72
IV.MMO1.EHZ. 2019-04-02T22:53:06.82 0.3 undecidable manual S 23 23.3544 108 -0.16 73
IV.LNSS.HHZ. 2019-04-02T22:53:05.50 0.3 undecidable manual S 231 18.1707 113 0.2 73
IV.MF5.EHZ. 2019-04-02T22:53:05.81 0.3 undecidable manual P 32 37.1295 50 -0.23 70
IV.NRCA.HHZ. 2019-04-02T22:53:04.83 0.3 undecidable manual S 330 16.3725 115 0.11 75
IV.MMO1.EHZ. 2019-04-02T22:53:03.15 0.3 undecidable manual P 23 23.3544 108 -0.23 72
IV.GAVE.EHZ. 2019-04-02T22:53:03.61 0.3 undecidable manual P 267 26.1516 106 -0.3 71
IV.SMA1.EHZ. 2019-04-02T22:53:03.88 0.3 undecidable manual S 130 12.876 120 0.23 73
IV.NRCA.HHZ. 2019-04-02T22:53:02.16 0.1 undecidable manual P 330 16.3725 115 0.09 100
IV.LNSS.HHZ. 2019-04-02T22:53:02.47 0.3 undecidable manual P 231 18.1707 113 0.06 75
IV.RM33.EHZ. 2019-04-02T22:53:02.89 0.3 undecidable manual P 180 21.7671 109 -0.19 73
IV.SMA1.EHZ. 2019-04-02T22:53:01.58 0.1 undecidable manual P 130 12.876 120 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.6 0.00004895 0.16 AML other m 2019-04-02T22:53:04.43
IV.NRCA.HHN. ML:1.3 0.0001965 0.08 AML other m 2019-04-02T22:53:04.98
IV.SMA1.EHN. ML:0.5 0.00004075 1.52 AML other m 2019-04-02T22:53:05.01
IV.NRCA.HHE. ML:1.6 0.0003415 0.18 AML other m 2019-04-02T22:53:05.13
IV.LNSS.HHN. ML:0.8 0.000057 0.22 AML other m 2019-04-02T22:53:05.94
IV.RM33.EHN. ML:0.8 0.000042999999999999995 0.24 AML other m 2019-04-02T22:53:06.49
IV.LNSS.HHE. ML:0.8 0.000058450000000000005 1.16 AML other m 2019-04-02T22:53:06.37
IV.RM33.EHE. ML:0.6 0.000030550000000000004 0.96 AML other m 2019-04-02T22:53:06.98
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