Earthquake with magnitude of ML 1.4 on date 23-08-2019 and time 14:23:00 (Italy) in region 2 km SW Roccafluvione (AP)

A magnitude ML 1.4 earthquake occured in region: 2 km SW Roccafluvione (AP), on

  • 23-08-2019 12:23:00 (UTC)
  • 23-08-2019 14:23:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.84, 13.46 at 19 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 2 2010 2010
Venarotta AP 5 2066 4076
Palmiano AP 6 196 4272
Acquasanta Terme AP 9 2916 7188
Ascoli Piceno AP 9 49407 56595
Montegallo AP 11 523 57118
Valle Castellana TE 12 977 58095
Montemonaco AP 13 604 58699
Comunanza AP 13 3166 61865
Force AP 14 1354 63219
Folignano AP 14 9241 72460
Rotella AP 15 906 73366
Montefortino FM 15 1178 74544
Arquata del Tronto AP 16 1178 75722
Montefalcone Appennino FM 16 424 76146
Castignano AP 17 2796 78942
Montedinove AP 18 488 79430
Appignano del Tronto AP 18 1785 81215
Amandola FM 18 3629 84844
Smerillo FM 18 365 85209
Rocca Santa Maria TE 18 537 85746
Civitella del Tronto TE 18 5116 90862
Maltignano AP 18 2401 93263
Santa Vittoria in Matenano FM 20 1330 94593
Montalto delle Marche AP 20 2122 96715

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Teramo (54892 inhabitants)
55 Km N of L'Aquila (69753 inhabitants)
63 Km E of Foligno (57155 inhabitants)
67 Km NW of Montesilvano (53738 inhabitants)
74 Km E of Terni (111501 inhabitants)
74 Km NW of Pescara (121014 inhabitants)
79 Km NW of Chieti (51815 inhabitants)
86 Km S of Ancona (100861 inhabitants)
92 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 1.4 2019-08-23
12:23:00
42.84 13.46 19 2019-08-23
12:31:06
Sala Sismica INGV-Roma 71741471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-23 12:23:00 ± 0.18
Latitude 42.84 ± 0.01
Longitude 13.46 ± 0.01
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71741471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1203
Semi-minor axis of confidence ellipse (meter) 282
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 1200
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 205
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.25631
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 71741471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-23 12:31:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AC.VLO.HHZ. 2019-08-23T12:24:22.84 3.0 undecidable manual Pn 9.61 0
IV.MCRV.HHZ. 2019-08-23T12:24:10.12 3.0 undecidable manual Sn -2.02 0
IV.SGTA.HHZ. 2019-08-23T12:24:05.67 3.0 undecidable manual Sn -6.13 0
IV.PAOL.HNZ. 2019-08-23T12:24:02.03 3.0 undecidable manual Sn 2.56 0
IV.RESU.HHZ. 2019-08-23T12:23:53.29 3.0 undecidable manual Pn -0.82 0
IV.CORL.HHZ. 2019-08-23T12:23:52.06 3.0 undecidable manual Pg 4.23 0
IV.MCI.EHZ. 2019-08-23T12:23:43.04 3.0 undecidable manual Sg 0.98 0
IT.VRB.HGZ. 2019-08-23T12:23:41.69 3.0 negative manual Pn 3.2 0
IV.VVLD.HHZ. 2019-08-23T12:23:39.19 3.0 undecidable manual Sg 3.42 0
CH.FUORN.HHZ. 2019-08-23T12:23:38.15 3.0 undecidable manual Pn -4.3 0
IV.SSFR.HNZ. 2019-08-23T12:23:29.72 3.0 undecidable manual Sn 0.42 0
IV.NDIM.HNZ. 2019-08-23T12:23:19.07 3.0 undecidable manual Pn 0.92 0
IV.ARVD.HHZ. 2019-08-23T12:23:10.14 3.0 undecidable manual P 2.76 0
IV.MC2.EHZ. 2019-08-23T12:23:09.82 0.3 undecidable manual S 289 0.2131 121 0.17 72
IV.MF5.EHZ. 2019-08-23T12:23:08.25 0.3 undecidable manual S 359 0.1439 134 0.22 72
IV.GIGS.HHZ. 2019-08-23T12:23:08.26 3.0 undecidable manual P 0.3 0
IV.FDMO.HHZ. 2019-08-23T12:23:07.32 3.0 undecidable manual P 2.18 0
IV.MTRA.EHZ. 2019-08-23T12:23:07.19 0.3 undecidable manual S 210 0.0998 145 0.01 75
IV.MMO1.EHZ. 2019-08-23T12:23:07.04 0.3 undecidable manual S 299 0.1151 141 -0.41 68
IV.NRCA.HHZ. 2019-08-23T12:23:06.26 0.1 undecidable manual P 268 0.2563 115 -0.06 96
IV.CSP1.EHZ. 2019-08-23T12:23:06.99 3.0 undecidable manual P 0
IV.SMA1.EHZ. 2019-08-23T12:23:06.10 0.1 undecidable manual P 204 0.2329 118 0.14 95
IV.TERO.HHZ. 2019-08-23T12:23:06.39 3.0 undecidable manual P -2.12 0
IV.GUMA.HHZ. 2019-08-23T12:23:06.04 0.1 undecidable manual P 337 0.2383 117 -0.01 97
IV.APEC.HHZ. 2019-08-23T12:23:05.04 3.0 positive manual P 0.68 0
IV.MC2.EHZ. 2019-08-23T12:23:05.66 0.1 undecidable manual P 289 0.2131 121 0 98
IV.MMO1.EHZ. 2019-08-23T12:23:04.18 0.1 undecidable manual P 299 0.1151 141 -0.21 95
IV.MTRA.EHZ. 2019-08-23T12:23:04.27 0.1 undecidable manual P 210 0.0998 145 0.03 100
IV.MF5.EHZ. 2019-08-23T12:23:04.79 0.1 undecidable manual P 359 0.1439 134 0.06 99
IV.FIAM.HHZ. 2019-08-23T12:23:01.20 3.0 negative manual P -2.1 0
IV.ARCI.HHZ. 2019-08-23T12:22:58.59 3.0 undecidable manual S -0.12 0
TV.SF01.EHZ. 2019-08-23T12:22:57.49 3.0 undecidable manual S -1.17 0
IV.VIVA.HHZ. 2019-08-23T12:22:56.37 3.0 positive manual P -5.19 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.7 0.0003335 0.1 AML other m 2019-08-23T12:23:07.24
IV.MTRA.EHE. ML:1.5 0.0002335 0.08 AML other m 2019-08-23T12:23:07.26
IV.SMA1.EHN. ML:1.1 5.51E-5 0.22 AML other m 2019-08-23T12:23:10.64
IV.GUMA.HHN. ML:1.6 0.000169 0.24 AML other m 2019-08-23T12:23:10.69
IV.SMA1.EHE. ML:1 4.935E-5 1.4 AML other m 2019-08-23T12:23:11.03
IV.NRCA.HHN. ML:1.9 0.0003205 0.16 AML other m 2019-08-23T12:23:11.13
IV.TERO.HHE. ML:1 4.375E-5 0.84 AML other m 2019-08-23T12:23:11.42
IV.NRCA.HHE. ML:1.5 0.0001485 1.28 AML other m 2019-08-23T12:23:11.73
IV.TERO.HHN. ML:1 4.385E-5 0.88 AML other m 2019-08-23T12:23:11.42
IV.GUMA.HHE. ML:1.3 0.0001025 1.24 AML other m 2019-08-23T12:23:12.35
IV.MF5.EHE. ML:1.2 0.00010855 0.42 AML other m 2019-08-23T12:23:15.34
IV.MF5.EHN. ML:1.5 0.000206 0.42 AML other m 2019-08-23T12:23:15.40
IV.NDIM.HHN. ML:3.7 0.000634 0.56 AML other m 2019-08-23T12:23:21.79
IV.NDIM.HHE. ML:3.9 0.000908 0.08 AML other m 2019-08-23T12:23:21.86
IV.MCI.EHN. ML:2.6 0.000185 0.84 AML other m 2019-08-23T12:23:25.56
IV.MCI.EHE. ML:2.6 0.0001945 0.32 AML other m 2019-08-23T12:23:29.61
IV.APEC.HHE. ML:2.3 0.0001525 0.08 AML other m 2019-08-23T12:23:39.11
IV.APEC.HHN. ML:2.1 9.54E-5 1.5 AML other m 2019-08-23T12:23:39.89
IV.PAOL.HHE. ML:2.2 4.06E-5 1.06 AML other m 2019-08-23T12:23:39.71
IV.PAOL.HHN. ML:2.2 4.035E-5 0.92 AML other m 2019-08-23T12:24:02.49
IV.PAOL.HNN. ML:3.5 0.0007655 0.98 AML other m 2019-08-23T12:24:07.50
IV.PAOL.HNE. ML:3.4 0.0005695 1.06 AML other m 2019-08-23T12:24:36.03
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