Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 17-02-2019 and time 14:42:18 (Italy) in region 5 km SW Arquata del Tronto (AP)

A magnitude ML 0.8 earthquake occured in region: 5 km SW Arquata del Tronto (AP), on

  • 17-02-2019 13:42:18 (UTC)
  • 17-02-2019 14:42:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7450, 13.2560 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.

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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
Arquata del Tronto AP 5 1178 1178
Accumoli RI 6 667 1845
Montegallo AP 13 523 2368
Acquasanta Terme AP 13 2916 5284
Amatrice RI 13 2657 7941
Norcia PG 14 4957 12898
Cittareale RI 16 482 13380
Montemonaco AP 18 604 13984
Castelsantangelo sul Nera MC 19 281 14265
Valle Castellana TE 20 977 15242

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
45 Km N of L'Aquila (69753 inhabitants)
51 Km E of Foligno (57155 inhabitants)
54 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
87 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
99 Km S of Ancona (100861 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 2019-02-17
13:42:18		 42.745 13.2562 13 2019-02-17
13:58:16		 Sala Sismica INGV-Roma 65628331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-17 13:42:18 ± 0.05
Latitude 42.7450 ± 0.0027
Longitude 13.2562 ± 0.0049
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 65628331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 359
Semi-minor axis of confidence ellipse (meter) 59
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 15
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) 0.31656
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 65628331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-17 13:58:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2019-02-17T13:42:29.87 0.3 undecidable manual S 337 35.1426 95 -0.17 72
IV.TERO.HHZ. 2019-02-17T13:42:29.00 0.3 undecidable manual S 115 31.4463 96 -0.06 75
IV.LNSS.HHZ. 2019-02-17T13:42:27.00 0.3 undecidable manual S 228 23.6541 100 0 76
IV.RM33.EHZ. 2019-02-17T13:42:27.89 0.3 undecidable manual S 187 26.3514 98 0.16 75
IV.MC2.EHZ. 2019-02-17T13:42:25.92 0.6 undecidable manual S 344 19.2696 106 0.06 52
IV.CSP1.EHZ. 2019-02-17T13:42:25.36 3.0 positive manual P -0.21 0
IV.TERO.HHZ. 2019-02-17T13:42:24.28 0.3 negative manual P 115 31.4463 96 -0.19 73
IV.FDMO.HHZ. 2019-02-17T13:42:24.84 1.0 negative manual P 337 35.1426 95 -0.19 24
IV.MF5.EHZ. 2019-02-17T13:42:24.83 0.1 undecidable manual P 32 31.6461 96 0.33 95
IV.SMA1.EHZ. 2019-02-17T13:42:24.67 0.3 undecidable manual S 153 14.2746 117 0.06 78
IV.RM33.EHZ. 2019-02-17T13:42:23.67 0.6 undecidable manual P 187 26.3514 98 -0.02 51
IV.MTRA.EHZ. 2019-02-17T13:42:23.96 0.3 undecidable manual S 83 11.4774 126 -0.03 77
IV.LNSS.HHZ. 2019-02-17T13:42:23.17 0.1 undecidable manual P 228 23.6541 100 -0.1 100
IV.SMA1.EHZ. 2019-02-17T13:42:22.00 0.6 negative manual P 153 14.2746 117 0.1 52
IV.MC2.EHZ. 2019-02-17T13:42:22.64 1.0 undecidable manual P 344 19.2696 106 0.02 26
IV.MTRA.EHZ. 2019-02-17T13:42:21.56 1.0 undecidable manual P 83 11.4774 126 0.02 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:0.7 0.000044550000000000005 0.28 AML other m 2019-02-17T13:42:24.22
IV.MTRA.EHN. ML:0.7 0.00004654999999999999 0.4 AML other m 2019-02-17T13:42:24.01
IV.SMA1.EHE. ML:1.0 0.0000852 0.2 AML other m 2019-02-17T13:42:24.85
IV.SMA1.EHN. ML:0.8 0.0000589 0.82 AML other m 2019-02-17T13:42:25.43
IV.LNSS.HHN. ML:1.1 0.00008249999999999999 0.2 AML other m 2019-02-17T13:42:27.15
IV.LNSS.HHE. ML:0.9 0.00004755 0.68 AML other m 2019-02-17T13:42:27.70
IV.TERO.HHE. ML:0.4 0.00001215 0.5 AML other m 2019-02-17T13:42:29.39
IV.TERO.HHN. ML:0.5 0.00001475 0.84 AML other m 2019-02-17T13:42:29.82
IV.FDMO.HHN. ML:0.9 0.00002835 1.8 AML other m 2019-02-17T13:42:30.00
IV.FDMO.HHE. ML:0.7 0.0000217 1.18 AML other m 2019-02-17T13:42:30.32
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