Earthquake with magnitude of ML 0.7 on date 23-08-2019 and time 04:00:36 (Italy) in region 4 km SW Roccafluvione (AP)

A magnitude ML 0.7 earthquake occured in region: 4 km SW Roccafluvione (AP), on

  • 23-08-2019 02:00:36 (UTC)
  • 23-08-2019 04:00:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.84, 13.43 at 20 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
Roccafluvione AP 4 2010 2010
Venarotta AP 7 2066 4076
Palmiano AP 7 196 4272
Acquasanta Terme AP 8 2916 7188
Montegallo AP 8 523 7711
Montemonaco AP 11 604 8315
Ascoli Piceno AP 12 49407 57722
Valle Castellana TE 13 977 58699
Arquata del Tronto AP 13 1178 59877
Comunanza AP 13 3166 63043
Montefortino FM 14 1178 64221
Force AP 15 1354 65575
Folignano AP 17 9241 74816
Rotella AP 17 906 75722
Montefalcone Appennino FM 17 424 76146
Amandola FM 17 3629 79775
Smerillo FM 18 365 80140
Rocca Santa Maria TE 19 537 80677
Castignano AP 19 2796 83473
Montedinove AP 19 488 83961

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Teramo (54892 inhabitants)
54 Km N of L'Aquila (69753 inhabitants)
61 Km E of Foligno (57155 inhabitants)
69 Km NW of Montesilvano (53738 inhabitants)
71 Km E of Terni (111501 inhabitants)
76 Km NW of Pescara (121014 inhabitants)
81 Km NW of Chieti (51815 inhabitants)
87 Km S of Ancona (100861 inhabitants)
90 Km E of Perugia (166134 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 0.7 2019-08-23
02:00:36
42.84 13.43 20 2019-08-23
02:12:44
Sala Sismica INGV-Roma 71721461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-23 02:00:36 ± 0.13
Latitude 42.84 ± 0.00
Longitude 13.43 ± 0.01
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71721461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 70
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 71721461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-23 02:12:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2019-08-23T02:00:49.16 0.1 undecidable manual S 308 0.3202 111 0.05 96
IV.CSP1.EHZ. 2019-08-23T02:00:48.59 0.1 undecidable manual S 327 0.3022 112 -0.02 97
IV.NRCA.HHZ. 2019-08-23T02:00:47.17 0.1 undecidable manual S 269 0.2338 120 0.38 91
IV.TERO.HNZ. 2019-08-23T02:00:47.22 0.3 undecidable manual S 150 0.2509 118 -0.01 73
IV.MNTT.EHE. 2019-08-23T02:00:47.60 0.1 undecidable manual S 28 0.2518 117 0.34 91
IV.SAP2.EHE. 2019-08-23T02:00:47.70 0.1 undecidable manual S 354 0.2581 117 0.28 92
IV.GUMA.HHE. 2019-08-23T02:00:46.80 0.1 undecidable manual S 342 0.2338 120 0.01 98
IV.MC2.EHE. 2019-08-23T02:00:46.10 0.1 undecidable manual S 292 0.1925 126 0.34 92
IV.MF5.EHZ. 2019-08-23T02:00:44.56 0.1 undecidable manual S 8 0.1493 135 -0.22 96
IV.SMA1.EHZ. 2019-08-23T02:00:44.37 3.0 undecidable manual S 0
IV.CSP1.EHZ. 2019-08-23T02:00:43.39 0.1 undecidable manual P 327 0.3022 112 -0.19 93
IV.FDMO.HHZ. 2019-08-23T02:00:43.73 0.1 undecidable manual P 308 0.3202 111 -0.14 93
IV.MMO1.EHZ. 2019-08-23T02:00:43.45 0.3 undecidable manual S 307 0.098 147 -0.37 70
IV.MTRA.EHZ. 2019-08-23T02:00:43.55 0.1 undecidable manual S 198 0.0872 150 -0.11 99
IV.MNTT.EHE. 2019-08-23T02:00:43.09 0.1 undecidable manual P 28 0.2518 117 0.29 92
IV.SAP2.EHE. 2019-08-23T02:00:42.44 0.1 undecidable manual P 354 0.2581 117 -0.45 89
IV.NRCA.HHZ. 2019-08-23T02:00:42.65 0.1 undecidable manual P 269 0.2338 120 0.12 96
IV.GUMA.HHE. 2019-08-23T02:00:42.41 0.1 undecidable manual P 342 0.2338 120 -0.12 96
IV.TERO.HNZ. 2019-08-23T02:00:42.84 0.3 undecidable manual P 150 0.2509 118 0.06 73
IV.MF5.EHZ. 2019-08-23T02:00:41.18 0.1 undecidable manual P 8 0.1493 135 -0.19 96
IV.SMA1.EHZ. 2019-08-23T02:00:41.82 3.0 undecidable manual P 0
IV.MC2.EHE. 2019-08-23T02:00:41.99 0.1 undecidable manual P 292 0.1925 126 0.06 98
IV.MTRA.EHZ. 2019-08-23T02:00:40.69 0.1 undecidable manual P 198 0.0872 150 -0.03 100
IV.MMO1.EHZ. 2019-08-23T02:00:40.59 0.3 undecidable manual P 307 0.098 147 -0.22 72
IV.T1299.EHZ. 2019-08-23T02:00:30.24 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:0.9 5.732725E-5 0.08 AML other m 2019-08-23T02:00:43.67
IV.MTRA.EHN. ML:1 8.003985E-5 0.1008 AML other m 2019-08-23T02:00:43.64
IV.NRCA.HHE. ML:0.9 3.826654E-5 0.12 AML other m 2019-08-23T02:00:47.51
IV.NRCA.HHN. ML:1.1 6.181956E-5 0.16 AML other m 2019-08-23T02:00:47.54
IV.TERO.HHE. ML:0.1 7.1074005E-6 0.3616 AML other m 2019-08-23T02:00:47.85
IV.TERO.HHN. ML:0.4 1.0602458E-5 0.5008 AML other m 2019-08-23T02:00:47.57
IV.FDMO.HHE. ML:0.2 7.109178E-6 0.1792 AML other m 2019-08-23T02:00:49.30
IV.FDMO.HHN. ML:0.5 8.465422E-6 1.5408 AML other m 2019-08-23T02:00:50.15
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