Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 18-10-2019 and time 07:14:55 (Italy) in region 4 km W Accumoli (RI)

A magnitude ML 1.0 earthquake occured in region: 4 km W Accumoli (RI), on

  • 18-10-2019 05:14:55 (UTC)
  • 18-10-2019 07:14:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7050, 13.1980 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
Accumoli RI 4 667 667
Cittareale RI 10 482 1149
Arquata del Tronto AP 11 1178 2327
Amatrice RI 11 2657 4984
Norcia PG 13 4957 9941
Cascia PG 15 3217 13158
Acquasanta Terme AP 19 2916 16074
Montegallo AP 19 523 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
43 Km NW of L'Aquila (69753 inhabitants)
48 Km E of Terni (111501 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
80 Km SE of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km W of Pescara (121014 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
89 Km W of Chieti (51815 inhabitants)
95 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 2019-10-18
05:14:55		 42.7048 13.1978 13 2019-10-18
06:37:23		 Sala Sismica INGV-Roma 73318641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-18 05:14:55 ± 0.11
Latitude 42.7048 ± 0.0036
Longitude 13.1978 ± 0.0061
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 73318641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 470
Semi-minor axis of confidence ellipse (meter) 112
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 20
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) 0.30937
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 73318641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-18 06:37:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MILN.HNZ. 2019-10-18T05:16:24.14 3.0 undecidable manual Sg 10.83 0
IV.LINA.HHZ. 2019-10-18T05:16:22.49 3.0 undecidable manual Pn -2.88 0
IV.MPNC.HHZ. 2019-10-18T05:16:17.85 3.0 positive manual Pg 16.549999 0
IV.MRGE.HHZ. 2019-10-18T05:16:09.22 3.0 undecidable manual Pg 16.66 0
MN.TRI.HHZ. 2019-10-18T05:16:07.85 3.0 undecidable manual Sg 4.74 0
IV.SPS2.HHZ. 2019-10-18T05:16:03.70 3.0 undecidable manual Pg 10.26 0
IV.SGG.HHZ. 2019-10-18T05:15:44.72 3.0 undecidable manual Sn -0.68 0
IV.VAGA.HHZ. 2019-10-18T05:15:39.00 3.0 undecidable manual Sn -4.14 0
IV.SGRT.HHZ. 2019-10-18T05:15:23.93 3.0 undecidable manual Pn -2.88 0
GU.GSCL.HHZ. 2019-10-18T05:15:22.60 3.0 undecidable manual Pg 8.5 0
IV.TOLF.HHZ. 2019-10-18T05:15:20.45 3.0 undecidable manual Sn 4.51 0
IV.FIR.HHZ. 2019-10-18T05:15:17.05 3.0 undecidable manual Sn -3.11 0
IT.VNF1.HGZ. 2019-10-18T05:15:15.99 3.0 negative manual Pn 0.64 0
IV.BRSN.EHZ. 2019-10-18T05:15:07.17 3.0 positive manual Pg 0.17 0
IV.TERO.HHZ. 2019-10-18T05:15:06.26 0.6 undecidable manual S 105 34.3434 96 -0.46 44
IV.CRE.HHZ. 2019-10-18T05:15:05.56 3.0 undecidable manual Sn -5.77 0
IV.MC2.EHN. 2019-10-18T05:15:04.13 0.6 undecidable manual S 358 22.9548 102 0.44 45
IV.CAMP.HHZ. 2019-10-18T05:15:04.09 0.6 undecidable manual S 137 25.4523 99 -0.28 47
IV.RM33.EHZ. 2019-10-18T05:15:03.52 0.3 undecidable manual S 176 21.7671 103 0.12 73
IV.MMO1.EHZ. 2019-10-18T05:15:03.84 0.6 undecidable manual S 26 23.9538 101 -0.14 48
IV.TERO.HHZ. 2019-10-18T05:15:02.03 0.6 undecidable manual P 105 34.3434 96 0.24 46
IV.LNSS.HHZ. 2019-10-18T05:15:02.17 0.6 undecidable manual S 229 17.0718 110 -0.03 49
IV.NRCA.HHZ. 2019-10-18T05:15:01.57 0.3 undecidable manual S 335 15.7731 113 -0.31 70
IV.SMA1.EHN. 2019-10-18T05:15:01.69 0.6 undecidable manual S 126 13.9749 119 0.26 48
IV.MTRA.HNE. 2019-10-18T05:15:01.74 0.6 undecidable manual S 70 17.1717 110 -0.48 45
IV.CAMP.HHZ. 2019-10-18T05:15:00.40 0.3 undecidable manual P 137 25.4523 99 -0.03 73
IV.T1299.HNN. 2019-10-18T05:15:00.87 0.6 undecidable manual S 139 10.4784 130 0.21 49
IV.MC2.EHN. 2019-10-18T05:15:00.31 0.3 undecidable manual P 358 22.9548 102 0.26 70
IV.MMO1.EHZ. 2019-10-18T05:15:00.25 0.3 undecidable manual P 26 23.9538 101 0.04 73
IV.MTRA.HNE. 2019-10-18T05:14:59.08 0.3 undecidable manual P 70 17.1717 110 -0.12 73
IV.LNSS.HHZ. 2019-10-18T05:14:59.00 0.1 undecidable manual P 229 17.0718 110 -0.19 96
IV.NRCA.HHZ. 2019-10-18T05:14:59.02 0.1 negative manual P 335 15.7731 113 0.02 100
IV.RM33.EHZ. 2019-10-18T05:14:59.89 0.1 undecidable manual P 176 21.7671 103 0.02 99
IV.T1299.HNN. 2019-10-18T05:14:58.43 0.1 undecidable manual P 139 10.4784 130 0.14 99
IV.SMA1.EHN. 2019-10-18T05:14:58.94 0.3 undecidable manual P 126 13.9749 119 0.2 72
IV.NARO.HHZ. 2019-10-18T05:14:56.81 3.0 undecidable manual P -2.19 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.2 0.00010889999999999999 0.14 AML other m 2019-10-18T05:15:02.30
IV.LNSS.HHN. ML:1.1 0.00009800000000000001 0.16 AML other m 2019-10-18T05:15:02.58
IV.RM33.EHN. ML:0.7 0.0000313 0.26 AML other m 2019-10-18T05:15:03.59
IV.RM33.EHE. ML:0.7 0.000030449999999999998 0.22 AML other m 2019-10-18T05:15:03.87
IV.LNSS.HNE. ML:1.1 0.000092696205 0.1408 AML other m 2019-10-18T05:15:02.30
IV.LNSS.HNN. ML:1.4 0.00018813053 0.8992 AML other m 2019-10-18T05:15:03.11
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