Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 17-02-2019 and time 21:48:52 (Italy) in region 3 km W Acquasanta Terme (AP)

A magnitude ML 0.8 earthquake occured in region: 3 km W Acquasanta Terme (AP), on

  • 17-02-2019 20:48:52 (UTC)
  • 17-02-2019 21:48:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7690, 13.3710 at 15 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Acquasanta Terme AP 3 2916 2916
Arquata del Tronto AP 6 1178 4094
Montegallo AP 9 523 4617
Valle Castellana TE 11 977 5594
Accumoli RI 13 667 6261
Roccafluvione AP 14 2010 8271
Montemonaco AP 15 604 8875
Rocca Santa Maria TE 16 537 9412
Venarotta AP 16 2066 11478
Palmiano AP 16 196 11674
Amatrice RI 17 2657 14331
Ascoli Piceno AP 19 49407 63738
Montefortino FM 20 1178 64916
Cortino TE 20 656 65572

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
58 Km E of Foligno (57155 inhabitants)
64 Km E of Terni (111501 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
80 Km NW of Chieti (51815 inhabitants)
88 Km E of Perugia (166134 inhabitants)
95 Km S of Ancona (100861 inhabitants)
100 Km NE of Guidonia Montecelio (88673 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
Bulletin
Rev1000 		ML 0.8 2019-02-17
20:48:52		 42.7687 13.3708 15 2019-08-22
08:25:11		 Bollettino Sismico Italiano INGV 70713141
Reviewed
Rev100 		ML 0.8 2019-02-17
20:48:52		 42.7772 13.3837 15 2019-02-17
20:56:08		 Sala Sismica INGV-Roma 65637601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-17 20:48:52 ± 0.09
Latitude 42.7687 ± 0.0036
Longitude 13.3708 ± 0.0061
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 70713141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 78
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 16
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33904
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.6
Num. used stations 12
Type of magnitude ML
Reference to an origin 70713141
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-07-19 13:47:51

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 65637601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-17 20:56:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ILLI.HHZ. 2019-02-17T20:50:26.33 3.0 undecidable manual Sn -1.14 0
IV.ZONE.HHZ. 2019-02-17T20:50:01.14 3.0 negative manual Pg 23.17 0
IV.MCIV.CHZ. 2019-02-17T20:50:00.17 3.0 undecidable manual Sg 1.95 0
IV.FIR.HHZ. 2019-02-17T20:49:58.93 3.0 undecidable manual Sn -7.06 0
IV.ILLI.HHZ. 2019-02-17T20:49:47.31 3.0 undecidable manual Pg 16.459999 0
RD.PGF.BHZ. 2019-02-17T20:49:45.82 3.0 undecidable manual Pn 4.04 0
IV.NDIM.HHZ. 2019-02-17T20:49:32.25 3.0 negative manual Pn 6.18 0
IV.RIBO.EHZ.01 2019-02-17T20:49:30.63 3.0 undecidable manual Pg 10.1 0
IV.FDMO.HHZ. 2019-02-17T20:49:04.99 0.3 undecidable manual S 322 37.629 100 -0.14 69
IV.RM33.EHZ. 2019-02-17T20:49:03.89 0.3 undecidable manual S 204 31.5462 103 0.35 68
IV.MF5.EHZ. 2019-02-17T20:49:02.47 0.3 undecidable manual S 17 25.3524 108 0.52 64
IV.NRCA.HHZ. 2019-02-17T20:49:01.13 0.3 undecidable manual S 289 22.0668 112 0.01 72
IV.TERO.HHZ. 2019-02-17T20:49:01.64 0.3 undecidable manual S 130 24.9528 108 -0.21 70
IV.SMA1.EHZ. 2019-02-17T20:48:59.57 0.3 undecidable manual S 191 15.5733 124 -0.02 73
IV.FDMO.HHZ. 2019-02-17T20:48:59.59 0.1 undecidable manual P 322 37.629 100 -0.21 90
IV.MMO1.EHZ. 2019-02-17T20:48:59.26 0.3 undecidable manual S 346 14.874 125 -0.18 71
IV.RM33.EHZ. 2019-02-17T20:48:58.93 0.1 undecidable manual P 204 31.5462 103 0.04 96
IV.MF5.EHZ. 2019-02-17T20:48:58.19 0.1 undecidable manual P 17 25.3524 108 0.22 92
IV.TERO.HHZ. 2019-02-17T20:48:57.73 0.1 undecidable manual P 130 24.9528 108 -0.19 94
IV.MTRA.EHZ. 2019-02-17T20:48:57.65 0.3 undecidable manual S 122 2.4975 169 0.07 75
IV.NRCA.HHZ. 2019-02-17T20:48:57.44 0.1 undecidable manual P 289 22.0668 112 -0.06 95
IV.MMO1.EHZ. 2019-02-17T20:48:56.38 0.1 undecidable manual P 346 14.874 125 -0.14 96
IV.SMA1.EHZ. 2019-02-17T20:48:56.77 0.3 undecidable manual P 191 15.5733 124 0.16 72
IV.GATE.HHZ. 2019-02-17T20:48:55.05 3.0 undecidable manual P 2.59 0
IV.MTRA.EHZ. 2019-02-17T20:48:55.49 0.1 undecidable manual P 122 2.4975 169 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.2 0.000134 0.12 AML other m 2019-02-17T20:48:59.92
IV.SMA1.EHE. ML:1.3 0.0001465 1.88 AML other m 2019-02-17T20:49:00.04
IV.NRCA.HHE. ML:0.7 0.00003235000000000001 0.18 AML other m 2019-02-17T20:49:01.21
IV.NRCA.HHN. ML:0.7 0.0000321 0.1 AML other m 2019-02-17T20:49:01.29
IV.TERO.HHN. ML:0.9 0.00004175 0.08 AML other m 2019-02-17T20:49:02.17
IV.TERO.HHE. ML:0.6 0.00002235 0.24 AML other m 2019-02-17T20:49:02.28
IV.FDMO.HHE. ML:0.6 0.00001515 0.42 AML other m 2019-02-17T20:49:37.52
IV.FDMO.HHN. ML:0.6 0.00001645 1.32 AML other m 2019-02-17T20:49:38.02
IV.RM33.EHN. ML:0.6 0.000013719999999999999 0.8 AML other m 2019-02-17T20:49:41.05
IV.RM33.EHE. ML:0.7 0.00001795 0.76 AML other m 2019-02-17T20:49:41.05
IV.MTRA.HNN. ML:6.5 32.945 1.34 AML other m 2019-02-17T20:49:50.11
IV.MTRA.HNE. ML:3.8 0.067 0.4 AML other m 2019-02-17T20:49:57.30
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