Earthquake with magnitude of ML 1.4 on date 23-08-2019 and time 17:04:34 (Italy) in region 7 km E Accumoli (RI)

A magnitude ML 1.4 earthquake occured in region: 7 km E Accumoli (RI), on

  • 23-08-2019 15:04:34 (UTC)
  • 23-08-2019 17:04:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.34 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.

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 7 667 667
Amatrice RI 8 2657 3324
Arquata del Tronto AP 9 1178 4502
Acquasanta Terme AP 10 2916 7418
Valle Castellana TE 14 977 8395
Campotosto AQ 16 542 8937
Rocca Santa Maria TE 16 537 9474
Montegallo AP 16 523 9997
Cortino TE 16 656 10653
Cittareale RI 17 482 11135
Capitignano AQ 20 665 11800

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km W of Teramo (54892 inhabitants)
39 Km N of L'Aquila (69753 inhabitants)
58 Km E of Terni (111501 inhabitants)
59 Km E of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
78 Km NW of Chieti (51815 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.4 2019-08-23
15:04:34
42.7 13.34 13 2019-08-23
15:11:28
Sala Sismica INGV-Roma 71747201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-23 15:04:34 ± 0.04
Latitude 42.70 ± 0.00
Longitude 13.34 ± 0.00
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 71747201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 143
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 71747201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-23 15:11:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.DGI.HHZ. 2019-08-23T15:06:28.43 3.0 undecidable manual Sg 16.85 0
IV.PCN.EHZ. 2019-08-23T15:06:25.73 3.0 undecidable manual Sg 17.6 0
IV.CAR1.HHZ. 2019-08-23T15:06:19.22 3.0 undecidable manual Sn -3.81 0
RD.PGF.BHZ. 2019-08-23T15:06:14.36 3.0 undecidable manual Sg 14.26 0
IV.CAGR.HHZ. 2019-08-23T15:06:01.02 3.0 undecidable manual Pg 11.25 0
IT.VRB.HGZ. 2019-08-23T15:05:56.61 3.0 undecidable manual Pg 13.04 0
IV.FVI.HHZ. 2019-08-23T15:05:45.18 3.0 undecidable manual Pg 11.98 0
GU.POPM.HHZ. 2019-08-23T15:05:45.40 3.0 undecidable manual Sg 6.52 0
GU.GSCL.HHZ. 2019-08-23T15:05:45.24 3.0 undecidable manual Sn -0.57 0
IV.AGLI.HHZ. 2019-08-23T15:05:39.78 3.0 undecidable manual Pg 13.57 0
IT.ORP.HGZ. 2019-08-23T15:05:36.39 3.0 undecidable manual Sg 3.2 0
IV.RIBO.EHZ.01 2019-08-23T15:05:28.32 3.0 undecidable manual Sn 4.82 0
IV.BRSN.EHZ. 2019-08-23T15:05:26.54 3.0 undecidable manual Sn -1.11 0
IV.CMPR.HHZ. 2019-08-23T15:05:23.78 3.0 undecidable manual Pg 5.93 0
IV.LAV9.HNZ. 2019-08-23T15:05:08.02 3.0 undecidable manual S -1.62 0
IV.ARVD.HHZ. 2019-08-23T15:05:04.50 3.0 undecidable manual S 0.51 0
IV.VVLD.HHZ. 2019-08-23T15:04:49.60 3.0 undecidable manual P -1.33 0
IV.CSP1.EHZ. 2019-08-23T15:04:49.43 0.3 undecidable manual S 346 0.4065 93 0.35 65
IV.GIGS.HHZ. 2019-08-23T15:04:45.92 0.3 undecidable manual S 144 0.2995 94 -0.01 72
IV.MC2.EHZ. 2019-08-23T15:04:44.24 0.1 undecidable manual S 333 0.2401 97 0.07 96
IV.LNSS.HHZ. 2019-08-23T15:04:44.10 0.1 undecidable manual S 247 0.2365 97 0.02 97
IV.TERO.HHZ. 2019-08-23T15:04:43.16 0.1 undecidable manual S 111 0.2104 98 -0.14 95
IV.RM33.EHZ. 2019-08-23T15:04:43.30 0.1 undecidable manual S 205 0.2077 99 0.06 97
IV.CSP1.EHZ. 2019-08-23T15:04:42.96 0.1 undecidable manual P 346 0.4065 93 0.01 94
IV.NRCA.HHZ. 2019-08-23T15:04:42.95 0.1 undecidable manual S 310 0.2122 98 -0.41 91
IV.CAMP.HHZ. 2019-08-23T15:04:42.09 0.1 undecidable manual S 162 0.17 104 -0.03 98
IV.GIGS.HHZ. 2019-08-23T15:04:41.11 0.1 undecidable manual P 144 0.2995 94 -0.03 96
IV.MC2.EHZ. 2019-08-23T15:04:40.15 0.1 undecidable manual P 333 0.2401 97 0.03 97
IV.RM33.EHZ. 2019-08-23T15:04:39.68 0.1 undecidable manual P 205 0.2077 99 0.1 96
IV.LNSS.HHZ. 2019-08-23T15:04:39.98 0.1 undecidable manual P 247 0.2365 97 -0.09 96
IV.MTRA.HNZ. 2019-08-23T15:04:39.63 0.1 undecidable manual S 37 0.0746 137 -0.03 100
IV.NRCA.HHZ. 2019-08-23T15:04:39.47 0.1 undecidable manual P 310 0.2122 98 -0.18 95
IV.SMA1.EHZ. 2019-08-23T15:04:39.41 0.1 undecidable manual S 180 0.0665 141 -0.1 98
IV.TERO.HHZ. 2019-08-23T15:04:39.59 0.1 undecidable manual P 111 0.2104 98 -0.03 97
IV.CAMP.HHZ. 2019-08-23T15:04:38.98 0.1 undecidable manual P 162 0.17 104 0.04 98
IV.SMA1.EHZ. 2019-08-23T15:04:37.69 0.1 negative manual P 180 0.0665 141 0.27 96
IV.MTRA.HNZ. 2019-08-23T15:04:37.66 0.1 undecidable manual P 37 0.0746 137 0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.6 0.000474 0.34 AML other m 2019-08-23T15:04:39.74
IV.MTRA.HNN. ML:1.6 0.000546 0.12 AML other m 2019-08-23T15:04:39.71
IV.MTRA.EHN. ML:1.6 0.000537 0.12 AML other m 2019-08-23T15:04:39.72
IV.SMA1.EHE. ML:1.5 0.000408 0.16 AML other m 2019-08-23T15:04:39.82
IV.MTRA.HNE. ML:1.4 0.0002845 0.26 AML other m 2019-08-23T15:04:39.87
IV.MTRA.EHE. ML:1.4 0.0003025 0.26 AML other m 2019-08-23T15:04:39.87
IV.NRCA.HHN. ML:1.7 0.000296 0.1 AML other m 2019-08-23T15:04:43.29
IV.TERO.HHE. ML:1.2 9.065E-5 0.16 AML other m 2019-08-23T15:04:43.33
IV.NRCA.HHE. ML:1.6 0.0002265 0.16 AML other m 2019-08-23T15:04:43.40
IV.TERO.HHN. ML:1.3 0.0001119 0.78 AML other m 2019-08-23T15:04:43.43
IV.RM33.EHN. ML:1.3 0.000118 0.12 AML other m 2019-08-23T15:04:43.60
IV.RM33.EHE. ML:1.4 0.000143 0.2 AML other m 2019-08-23T15:04:43.79
IV.RM33.HNE. ML:1.5 0.00019 0.7 AML other m 2019-08-23T15:04:43.89
IV.LNSS.HHE. ML:1.3 0.00010405 0.5 AML other m 2019-08-23T15:04:44.40
IV.LNSS.HHN. ML:1.4 0.0001185 0.2 AML other m 2019-08-23T15:04:44.20
IV.RM33.HNN. ML:1.5 0.00018615 0.44 AML other m 2019-08-23T15:04:44.60
IV.GIGS.HHN. ML:0.4 1.215E-5 0.82 AML other m 2019-08-23T15:04:46.41
IV.GIGS.HHE. ML:0.7 2.15E-5 0.42 AML other m 2019-08-23T15:04:47.45
IV.BRSN.EHE. ML:3.5 0.000997 0.54 AML other m 2019-08-23T15:05:19.88
IV.BRSN.HNE. ML:3.5 0.0009355 0.54 AML other m 2019-08-23T15:05:19.88
IV.BRSN.EHN. ML:3.5 0.000866 0.32 AML other m 2019-08-23T15:05:56.78
IV.BRSN.HNN. ML:3.4 0.0007935 0.32 AML other m 2019-08-23T15:05:56.78
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download