Earthquake with magnitude of ML 1.0 on date 25-08-2019 and time 06:10:16 (Italy) in region 5 km N Acquasanta Terme (AP)

A magnitude ML 1.0 earthquake occured in region: 5 km N Acquasanta Terme (AP), on

  • 25-08-2019 04:10:16 (UTC)
  • 25-08-2019 06:10:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.81, 13.4 at 23 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
Acquasanta Terme AP 5 2916 2916
Montegallo AP 6 523 3439
Roccafluvione AP 9 2010 5449
Arquata del Tronto AP 9 1178 6627
Palmiano AP 11 196 6823
Montemonaco AP 11 604 7427
Venarotta AP 11 2066 9493
Valle Castellana TE 12 977 10470
Montefortino FM 16 1178 11648
Ascoli Piceno AP 16 49407 61055
Comunanza AP 17 3166 64221
Accumoli RI 17 667 64888
Rocca Santa Maria TE 18 537 65425
Force AP 19 1354 66779
Amandola FM 19 3629 70408
Folignano AP 20 9241 79649

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Teramo (54892 inhabitants)
51 Km N of L'Aquila (69753 inhabitants)
59 Km E of Foligno (57155 inhabitants)
67 Km E of Terni (111501 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
77 Km NW of Pescara (121014 inhabitants)
81 Km NW of Chieti (51815 inhabitants)
88 Km E of Perugia (166134 inhabitants)
90 Km S of Ancona (100861 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 1.0 2019-08-25
04:10:16
42.81 13.39 23 2019-08-25
04:23:18
Sala Sismica INGV-Roma 71783131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-25 04:10:16 ± 0.17
Latitude 42.81 ± 0.00
Longitude 13.39 ± 0.01
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71783131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 625
Semi-minor axis of confidence ellipse (meter) 580
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 116
Circular confidence region, given by single value of horizontal uncertainty (meter) 630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
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) 0.31926
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 71783131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-25 04:23:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATFO.HHZ. 2019-08-25T04:10:46.31 3.0 undecidable manual S 1.09 0
IV.FDMO.HHZ. 2019-08-25T04:10:29.46 0.3 undecidable manual S 315 0.3193 115 0.01 74
IV.CSP1.EHZ. 2019-08-25T04:10:29.56 0.3 undecidable manual S 334 0.3139 116 0.25 71
IV.SMA1.EHZ. 2019-08-25T04:10:26.21 0.3 undecidable manual S 194 0.1844 133 0.09 75
IV.NRCA.HHZ. 2019-08-25T04:10:26.80 0.3 undecidable manual S 277 0.2068 129 0.18 74
IV.MF5.EHZ. 2019-08-25T04:10:26.28 0.3 undecidable manual S 15 0.1835 133 0.18 73
IV.MTRA.EHZ. 2019-08-25T04:10:24.00 0.3 undecidable manual S 179 0.0531 164 -0.01 78
IV.MMO1.EHZ. 2019-08-25T04:10:24.32 0.3 undecidable manual S 331 0.1025 150 -0.26 73
IV.FDMO.HHZ. 2019-08-25T04:10:23.85 0.3 undecidable manual P 315 0.3193 115 -0.25 70
IV.CSP1.EHZ. 2019-08-25T04:10:23.78 0.6 undecidable manual P 334 0.3139 116 -0.24 47
IV.MF5.EHZ. 2019-08-25T04:10:22.25 1.0 positive manual P 15 0.1835 133 0.09 25
IV.SMA1.EHZ. 2019-08-25T04:10:22.32 0.3 undecidable manual P 194 0.1844 133 0.15 74
IV.NRCA.HHZ. 2019-08-25T04:10:22.44 0.1 positive manual P 277 0.2068 129 -0.02 100
IV.MMO1.EHZ. 2019-08-25T04:10:21.15 0.1 undecidable manual P 331 0.1025 150 -0.14 100
IV.MTRA.EHZ. 2019-08-25T04:10:20.97 0.3 undecidable manual P 179 0.0531 164 0.01 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.1 8.243129E-5 0.08 AML other m 2019-08-25T04:10:24.15
IV.MTRA.EHN. ML:1.2 0.0001190359 0.08 AML other m 2019-08-25T04:10:24.12
IV.MTRA.HNE. ML:1.1 8.92308525E-5 0.08 AML other m 2019-08-25T04:10:24.15
IV.MTRA.HNN. ML:1.2 0.000110804505 0.0704 AML other m 2019-08-25T04:10:24.09
IV.SMA1.EHE. ML:0.3 1.1710341E-5 0.0832 AML other m 2019-08-25T04:10:27.16
IV.SMA1.EHN. ML:0.5 1.553628E-5 0.08 AML other m 2019-08-25T04:10:27.18
IV.NRCA.HHE. ML:0.6 2.189228E-5 0.08 AML other m 2019-08-25T04:10:27.37
IV.NRCA.HHN. ML:0.9 3.7073245E-5 0.1184 AML other m 2019-08-25T04:10:27.44
IV.FDMO.HHE. ML:0.9 2.473402E-5 0.16 AML other m 2019-08-25T04:10:32.79
IV.FDMO.HHN. ML:1.2 5.328095E-5 0.1984 AML other m 2019-08-25T04:10:32.66
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