Earthquake with magnitude of ML 1.8 on date 23-08-2019 and time 05:12:07 (Italy) in region 4 km SW Roccafluvione (AP)

A magnitude ML 1.8 earthquake occured in region: 4 km SW Roccafluvione (AP), on

  • 23-08-2019 03:12:07 (UTC)
  • 23-08-2019 05:12:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.84, 13.44 at 17 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 6 2066 4076
Palmiano AP 7 196 4272
Acquasanta Terme AP 8 2916 7188
Montegallo AP 9 523 7711
Montemonaco AP 11 604 8315
Ascoli Piceno AP 11 49407 57722
Valle Castellana TE 13 977 58699
Comunanza AP 13 3166 61865
Arquata del Tronto AP 14 1178 63043
Montefortino FM 14 1178 64221
Force AP 14 1354 65575
Folignano AP 16 9241 74816
Rotella AP 16 906 75722
Montefalcone Appennino FM 17 424 76146
Amandola FM 17 3629 79775
Smerillo FM 18 365 80140
Castignano AP 19 2796 82936
Rocca Santa Maria TE 19 537 83473
Montedinove AP 19 488 83961
Appignano del Tronto AP 20 1785 85746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Teramo (54892 inhabitants)
55 Km N of L'Aquila (69753 inhabitants)
61 Km E of Foligno (57155 inhabitants)
69 Km NW of Montesilvano (53738 inhabitants)
72 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 1.8 2019-08-23
03:12:07
42.84 13.44 17 2019-08-23
03:27:45
Sala Sismica INGV-Roma 71722361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-23 03:12:07 ± 0.09
Latitude 42.84 ± 0.00
Longitude 13.44 ± 0.00
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71722361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 49
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.55938
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.5
Num. used stations 22
Type of magnitude ML
Reference to an origin 71722361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-23 03:27:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MODR.HHZ. 2019-08-23T03:12:56.72 3.0 undecidable manual Sn -3.02 0
IV.VIVA.HHZ. 2019-08-23T03:12:46.90 3.0 undecidable manual S 0.16 0
IV.LRP.EHZ. 2019-08-23T03:12:43.90 3.0 undecidable manual S -2.95 0
IV.ATPI.EHZ. 2019-08-23T03:12:41.21 3.0 undecidable manual S 0.39 0
IV.ATPI.EHZ. 2019-08-23T03:12:27.23 3.0 positive manual P 1.1 0
IV.LNSS.HHZ. 2019-08-23T03:12:21.00 0.1 undecidable manual S 231 0.3777 102 0.11 92
IV.GIGS.HHZ. 2019-08-23T03:12:21.20 0.3 undecidable manual S 166 0.4002 101 -0.36 66
IV.RM33.EHE. 2019-08-23T03:12:21.40 0.3 undecidable manual S 206 0.3705 102 0.69 59
IV.ATCC.EHZ. 2019-08-23T03:12:20.07 3.0 undecidable manual P -0.75 0
IV.FDMO.HHZ. 2019-08-23T03:12:19.20 0.1 undecidable manual S 307 0.3229 105 -0.12 94
IV.MNTP.HNE. 2019-08-23T03:12:19.00 0.3 undecidable manual S 4 0.2968 107 0.42 67
IV.CAMP.HHE. 2019-08-23T03:12:19.20 0.3 undecidable manual S 184 0.3058 106 0.35 67
IV.PF6.EHE. 2019-08-23T03:12:19.70 0.1 undecidable manual S 329 0.3462 104 -0.29 90
IV.FEMA.HNE. 2019-08-23T03:12:19.30 0.3 undecidable manual S 293 0.3094 106 0.36 66
IV.ARRO.EHZ. 2019-08-23T03:12:18.14 0.1 undecidable manual P 242 0.5594 97 0.01 91
IV.CSP1.EHE. 2019-08-23T03:12:18.60 0.1 undecidable manual S 326 0.3031 106 -0.16 93
IV.EL6.EHZ. 2019-08-23T03:12:17.74 3.0 undecidable manual P -0.6 0
IV.GUMA.HHZ. 2019-08-23T03:12:17.00 0.1 undecidable manual S 341 0.2338 113 0.17 95
IV.NRCA.HHZ. 2019-08-23T03:12:17.20 0.1 undecidable manual S 268 0.2374 112 0.26 92
IV.TERO.HHZ. 2019-08-23T03:12:17.30 0.3 undecidable manual S 151 0.25 111 0.03 73
IV.MNTT.EHZ. 2019-08-23T03:12:17.90 0.1 undecidable manual S 27 0.2482 111 0.67 84
IV.SNTG.HHZ. 2019-08-23T03:12:17.81 3.0 undecidable manual P -0.63 0
IV.SAP2.EHE. 2019-08-23T03:12:17.70 0.3 undecidable manual S 354 0.2563 110 0.24 70
IV.MC2.EHZ. 2019-08-23T03:12:16.00 0.1 undecidable manual S 291 0.1961 119 0.19 94
IV.SMA1.EHE. 2019-08-23T03:12:16.80 0.1 undecidable manual S 200 0.2239 114 0.24 93
IV.T1299.EHE. 2019-08-23T03:12:16.20 0.1 undecidable manual S 209 0.2365 113 -0.71 82
IV.LNSS.HHZ. 2019-08-23T03:12:15.06 0.1 undecidable manual P 231 0.3777 102 0 94
IV.GIGS.HHZ. 2019-08-23T03:12:15.24 0.3 undecidable manual P 166 0.4002 101 -0.2 68
IV.RM33.EHE. 2019-08-23T03:12:14.93 0.3 undecidable manual P 206 0.3705 102 -0.02 71
IV.MF5.EHZ. 2019-08-23T03:12:14.50 0.1 undecidable manual S 6 0.1475 128 -0.1 96
IV.PF6.EHE. 2019-08-23T03:12:14.06 0.1 undecidable manual P 329 0.3462 104 -0.47 87
IV.CSP1.EHE. 2019-08-23T03:12:13.47 0.1 undecidable manual P 326 0.3031 106 -0.35 90
IV.FEMA.HNE. 2019-08-23T03:12:13.85 0.3 undecidable manual P 293 0.3094 106 -0.08 71
IV.MTRA.EHZ. 2019-08-23T03:12:13.50 0.1 undecidable manual S 200 0.0899 145 0.07 100
IV.SAP2.EHE. 2019-08-23T03:12:13.59 0.3 undecidable manual P 354 0.2563 110 0.52 65
IV.FDMO.HHZ. 2019-08-23T03:12:13.79 0.1 undecidable manual P 307 0.3229 105 -0.36 89
IV.MNTP.HNE. 2019-08-23T03:12:13.75 0.3 undecidable manual P 4 0.2968 107 0.03 72
IV.CAMP.HHE. 2019-08-23T03:12:13.73 0.3 undecidable manual P 184 0.3058 106 -0.14 70
IV.MMO1.EHE. 2019-08-23T03:12:13.40 0.3 undecidable manual S 305 0.1007 141 -0.22 72
IV.TERO.HHZ. 2019-08-23T03:12:12.80 0.3 undecidable manual P 151 0.25 111 -0.16 70
IV.MNTT.EHZ. 2019-08-23T03:12:12.98 0.1 undecidable manual P 27 0.2482 111 0.04 97
IV.MC2.EHZ. 2019-08-23T03:12:12.14 0.1 undecidable manual P 291 0.1961 119 0.02 98
IV.SMA1.EHE. 2019-08-23T03:12:12.61 0.1 undecidable manual P 200 0.2239 114 0.06 97
IV.GUMA.HHZ. 2019-08-23T03:12:12.55 0.1 negative manual P 341 0.2338 113 -0.16 94
IV.T1299.EHE. 2019-08-23T03:12:12.94 0.1 undecidable manual P 209 0.2365 113 0.19 94
IV.NRCA.HHZ. 2019-08-23T03:12:12.75 0.1 positive manual P 268 0.2374 112 -0.02 98
IV.MF5.EHZ. 2019-08-23T03:12:11.23 0.1 undecidable manual P 6 0.1475 128 -0.19 95
IV.MMO1.EHE. 2019-08-23T03:12:10.67 0.3 undecidable manual P 305 0.1007 141 -0.18 72
IV.MTRA.EHZ. 2019-08-23T03:12:10.78 0.1 positive manual P 200 0.0899 145 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:2.2 0.0014606495 0.08 AML other m 2019-08-23T03:12:13.72
IV.MTRA.EHN. ML:2.3 0.0015672715 0.1008 AML other m 2019-08-23T03:12:13.73
IV.MTRA.HNE. ML:3.8 0.0586135 50.3904 AML other m 2019-08-23T03:11:48.45
IV.MF5.EHE. ML:1.7 0.00037400955 0.3616 AML other m 2019-08-23T03:12:15.02
IV.MF5.EHN. ML:1.5 0.00023208955 0.4192 AML other m 2019-08-23T03:12:14.77
IV.GUMA.HNE. ML:1.9 0.00038018065 0.1392 AML other m 2019-08-23T03:12:17.11
IV.GUMA.HNN. ML:2.3 0.00096513895 0.5904 AML other m 2019-08-23T03:12:17.93
IV.GUMA.HHE. ML:1.9 0.0003872365 0.1216 AML other m 2019-08-23T03:12:17.12
IV.GUMA.HHN. ML:2 0.00052768765 0.24 AML other m 2019-08-23T03:12:17.19
IV.NRCA.HHE. ML:2.2 0.0007033612 0.12 AML other m 2019-08-23T03:12:17.59
IV.NRCA.HHN. ML:2.2 0.00082603595 0.1616 AML other m 2019-08-23T03:12:17.62
IV.NRCA.HNE. ML:2.1 0.00065559785 0.12 AML other m 2019-08-23T03:12:17.59
IV.NRCA.HNN. ML:2.2 0.0008082596 0.1712 AML other m 2019-08-23T03:12:17.62
IV.MNTT.EHE. ML:1.8 0.00028841995 0.4608 AML other m 2019-08-23T03:12:18.33
IV.FDMO.HHE. ML:1.4 7.824909E-5 0.2192 AML other m 2019-08-23T03:12:19.47
IV.FDMO.HHN. ML:1.1 5.1705285E-5 0.2208 AML other m 2019-08-23T03:12:19.46
IV.LNSS.HHN. ML:1.3 5.4364135E-5 0.2992 AML other m 2019-08-23T03:12:24.25
IV.GIGS.HHE. ML:0.6 7.582077E-6 0.1792 AML other m 2019-08-23T03:12:23.94
IV.EL6.EHE. ML:1.2 2.7860045E-5 0.1808 AML other m 2019-08-23T03:12:29.56
IV.SNTG.HHE. ML:0.7 1.0245073E-5 0.1008 AML other m 2019-08-23T03:12:27.60
IV.SNTG.HHN. ML:0.7 9.894634E-6 0.1216 AML other m 2019-08-23T03:12:26.97
IV.ARRO.EHE. ML:0.7 1.1053235E-5 0.1392 AML other m 2019-08-23T03:12:29.01
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