Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 13-08-2019 and time 06:08:51 (UTC) in region 2 km W Accumoli (RI)

A magnitude ML 1.4 earthquake occured in region: 2 km W Accumoli (RI), on

  • 13-08-2019 06:08:51 (UTC)
  • 13-08-2019 08:08:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6980, 13.2280 at 11 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 2 667 667
Amatrice RI 9 2657 3324
Arquata del Tronto AP 10 1178 4502
Cittareale RI 11 482 4984
Norcia PG 15 4957 9941
Acquasanta Terme AP 17 2916 12857
Cascia PG 18 3217 16074
Montegallo AP 18 523 16597
Montereale AQ 19 2581 19178
Campotosto AQ 20 542 19720

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
50 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
89 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 1.4 2019-08-13
06:08:51		 42.6985 13.2283 11 2019-08-13
06:19:10		 Sala Sismica INGV-Roma 71438741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-13 06:08:51 ± 0.06
Latitude 42.6985 ± 0.0036
Longitude 13.2283 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71438741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 447
Semi-minor axis of confidence ellipse (meter) 295
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39390
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 71438741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-13 06:19:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2019-08-13T06:09:15.22 3.0 undecidable manual P 0.24 0
IV.CERA.HHZ. 2019-08-13T06:09:11.98 3.0 undecidable manual P -4.87 0
IV.MF5.EHZ. 2019-08-13T06:09:04.21 0.3 undecidable manual S 30 37.2294 50 0.45 66
IV.GIGS.HHZ. 2019-08-13T06:09:03.84 0.3 undecidable manual S 134 39.1275 50 -0.44 66
IV.MC2.EHZ. 2019-08-13T06:09:00.36 0.3 undecidable manual S 352 23.8539 50 0.16 72
IV.MMO1.EHZ. 2019-08-13T06:09:00.01 0.3 undecidable manual S 20 23.6541 50 -0.14 73
IV.RM33.EHZ. 2019-08-13T06:08:59.54 0.6 undecidable manual S 183 21.0678 50 0.09 49
IV.CSP1.EHZ. 2019-08-13T06:08:59.43 0.6 positive manual P 358 43.7229 50 -0.07 47
IV.NRCA.HHZ. 2019-08-13T06:08:58.16 0.3 undecidable manual S 328 17.6712 122 -0.33 70
IV.LNSS.HHZ. 2019-08-13T06:08:58.83 0.3 undecidable manual S 235 18.6702 120 0.03 75
IV.GIGS.HHZ. 2019-08-13T06:08:58.49 0.3 undecidable manual P 134 39.1275 50 -0.31 68
IV.MF5.EHZ. 2019-08-13T06:08:58.86 0.3 undecidable manual P 30 37.2294 50 0.36 68
IV.SMA1.EHZ. 2019-08-13T06:08:57.03 0.3 undecidable manual S 131 11.5773 133 0.23 73
IV.MTRA.EHZ. 2019-08-13T06:08:57.50 0.3 undecidable manual S 65 15.1737 126 -0.28 72
IV.RM33.EHZ. 2019-08-13T06:08:56.04 0.3 undecidable manual P 183 21.0678 50 0.03 75
IV.MMO1.EHZ. 2019-08-13T06:08:56.28 0.3 undecidable manual P 20 23.6541 50 -0.14 73
IV.MC2.EHZ. 2019-08-13T06:08:56.41 0.3 undecidable manual P 352 23.8539 50 -0.03 74
IV.TERO.HHZ. 2019-08-13T06:08:56.46 3.0 undecidable manual P -1.97 0
IV.MTRA.EHZ. 2019-08-13T06:08:55.08 0.3 undecidable manual P 65 15.1737 126 0.03 75
IV.NRCA.HHZ. 2019-08-13T06:08:55.43 0.1 positive manual P 328 17.6712 122 -0.03 100
IV.LNSS.HHZ. 2019-08-13T06:08:55.69 0.3 undecidable manual P 235 18.6702 120 0.05 75
IV.SMA1.EHZ. 2019-08-13T06:08:54.74 0.1 negative manual P 131 11.5773 133 0.26 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.0 0.00010832443999999999 0.1824 AML other m 2019-08-13T06:08:57.63
IV.SMA1.EHN. ML:0.7 0.00005711747 0.1632 AML other m 2019-08-13T06:08:58.59
IV.MTRA.HNE. ML:1.4 0.00023059950000000001 0.2112 AML other m 2019-08-13T06:08:58.27
IV.MTRA.HNN. ML:1.5 0.000292872 0.1504 AML other m 2019-08-13T06:08:57.60
IV.MTRA.EHE. ML:1.4 0.00021852895 0.2208 AML other m 2019-08-13T06:08:58.28
IV.MTRA.EHN. ML:1.5 0.00026463159999999997 0.1408 AML other m 2019-08-13T06:08:57.61
IV.NRCA.HNE. ML:2.0 0.0007782190499999999 0.0896 AML other m 2019-08-13T06:08:58.44
IV.NRCA.HNN. ML:2.0 0.0008596904000000001 0.0896 AML other m 2019-08-13T06:08:58.29
IV.NRCA.HHE. ML:2.0 0.0009053262 0.08 AML other m 2019-08-13T06:08:58.44
IV.NRCA.HHN. ML:2.1 0.0010106654 0.08 AML other m 2019-08-13T06:08:58.29
IV.LNSS.HNE. ML:1.1 0.00009505785 0.1792 AML other m 2019-08-13T06:08:59.06
IV.LNSS.HNN. ML:1.2 0.000111834305 0.16 AML other m 2019-08-13T06:08:59.27
IV.LNSS.HHE. ML:1.2 0.00011054425 0.1792 AML other m 2019-08-13T06:08:59.05
IV.LNSS.HHN. ML:1.1 0.0001009232 0.1408 AML other m 2019-08-13T06:08:59.58
IV.RM33.HNE. ML:1.3 0.0001303149 0.208 AML other m 2019-08-13T06:09:01.08
IV.RM33.HNN. ML:1.5 0.00020299008999999997 0.272 AML other m 2019-08-13T06:08:59.70
IV.RM33.EHE. ML:1.3 0.0001231692 0.1984 AML other m 2019-08-13T06:09:00.98
IV.RM33.EHN. ML:1.4 0.0001588168 0.2624 AML other m 2019-08-13T06:08:59.70
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