Earthquake with magnitude of ML 1.5 on date 21-09-2019 and time 21:48:17 (UTC) in region 3 km NE Acquasanta Terme (AP)

A magnitude ML 1.5 earthquake occured in region: 3 km NE Acquasanta Terme (AP), on

  • 21-09-2019 21:48:17 (UTC)
  • 21-09-2019 23:48:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.42 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
Acquasanta Terme AP 3 2916 2916
Roccafluvione AP 8 2010 4926
Montegallo AP 9 523 5449
Valle Castellana TE 9 977 6426
Arquata del Tronto AP 11 1178 7604
Venarotta AP 11 2066 9670
Palmiano AP 12 196 9866
Montemonaco AP 14 604 10470
Ascoli Piceno AP 14 49407 59877
Rocca Santa Maria TE 15 537 60414
Folignano AP 17 9241 69655
Montefortino FM 18 1178 70833
Comunanza AP 18 3166 73999
Accumoli RI 18 667 74666
Force AP 19 1354 76020
Civitella del Tronto TE 20 5116 81136

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Teramo (54892 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
61 Km E of Foligno (57155 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
69 Km E of Terni (111501 inhabitants)
74 Km NW of Pescara (121014 inhabitants)
79 Km NW of Chieti (51815 inhabitants)
91 Km E of Perugia (166134 inhabitants)
92 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 1.5 2019-09-21
21:48:17
42.8 13.42 17 2019-09-21
21:54:10
Sala Sismica INGV-Roma 72629541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-21 21:48:17 ± 0.15
Latitude 42.80 ± 0.01
Longitude 13.42 ± 0.01
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 72629541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 874
Semi-minor axis of confidence ellipse (meter) 539
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
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) 0.58186
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 72629541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-21 21:54:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VIVA.HHZ. 2019-09-21T21:48:56.75 3.0 undecidable manual S 0.4 0
IV.EL6.EHZ. 2019-09-21T21:48:38.22 0.6 undecidable manual S 336 0.5819 97 0.77 38
IV.EL6.EHZ. 2019-09-21T21:48:28.85 1.0 negative manual P 336 0.5819 97 -0.23 23
IV.ARRO.EHZ. 2019-09-21T21:48:28.28 0.6 positive manual P 246 0.5306 98 0.05 47
IV.MC2.EHZ. 2019-09-21T21:48:26.75 0.3 undecidable manual S 304 0.2068 116 0.09 75
IV.GAVE.EHZ. 2019-09-21T21:48:26.02 0.3 negative manual P 255 0.4029 101 -0.05 73
IV.MF5.EHZ. 2019-09-21T21:48:26.47 0.3 undecidable manual S 8 0.1916 119 0.2 74
IV.FDMO.HHZ. 2019-09-21T21:48:25.79 0.3 undecidable manual P 314 0.3435 103 0.72 61
IV.LNSS.HHZ. 2019-09-21T21:48:25.03 0.1 undecidable manual P 236 0.3426 103 -0.03 99
IV.CSP1.EHZ. 2019-09-21T21:48:24.48 0.3 negative manual P 331 0.3354 104 -0.46 68
IV.MMO1.EHZ. 2019-09-21T21:48:24.46 0.3 undecidable manual S 325 0.1241 134 -0.19 74
IV.MNTT.EHZ. 2019-09-21T21:48:24.47 1.0 negative manual P 25 0.2923 107 0.24 24
IV.RM33.EHZ. 2019-09-21T21:48:24.80 0.3 positive manual P 208 0.3274 104 0 74
IV.GUMA.HHZ. 2019-09-21T21:48:23.72 0.1 negative manual P 346 0.2734 108 -0.19 97
IV.MTRA.HNZ. 2019-09-21T21:48:23.48 0.3 undecidable manual S 207 0.0459 161 0.11 78
IV.TERO.HHZ. 2019-09-21T21:48:23.16 0.6 undecidable manual P 143 0.2185 114 0.11 49
IV.NRCA.HHZ. 2019-09-21T21:48:23.05 0.1 positive manual P 279 0.2302 113 -0.18 98
IV.MF5.EHZ. 2019-09-21T21:48:22.55 0.1 negative manual P 8 0.1916 119 -0.09 100
IV.MC2.EHZ. 2019-09-21T21:48:22.75 0.6 negative manual P 304 0.2068 116 -0.11 50
IV.MMO1.EHZ. 2019-09-21T21:48:21.47 0.1 negative manual P 325 0.1241 134 -0.23 98
IV.MTRA.HNZ. 2019-09-21T21:48:21.04 0.3 positive manual P 207 0.0459 161 0.09 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:1.6 0.0003855 0.12 AML other m 2019-09-21T21:48:23.62
IV.MTRA.EHN. ML:1.6 0.000397 0.12 AML other m 2019-09-21T21:48:23.62
IV.MTRA.EHE. ML:1.3 0.0002015 0.76 AML other m 2019-09-21T21:48:24.96
IV.MTRA.HNE. ML:1.5 0.000275 1 AML other m 2019-09-21T21:48:25.50
IV.MF5.EHE. ML:1.6 0.0002125 1.52 AML other m 2019-09-21T21:48:27.01
IV.MF5.EHN. ML:1.6 0.000206 1.2 AML other m 2019-09-21T21:48:27.64
IV.NRCA.HHE. ML:2 0.000551 0.12 AML other m 2019-09-21T21:48:27.51
IV.NRCA.HNE. ML:2 0.000523 0.12 AML other m 2019-09-21T21:48:27.51
IV.NRCA.HHN. ML:2.3 0.0009165 0.7 AML other m 2019-09-21T21:48:27.56
IV.NRCA.HNN. ML:2.3 0.0009005 0.72 AML other m 2019-09-21T21:48:27.56
IV.TERO.HHE. ML:1 5.565E-5 0.28 AML other m 2019-09-21T21:48:28.00
IV.TERO.HHN. ML:1 5.08E-5 0.62 AML other m 2019-09-21T21:48:28.61
IV.GUMA.HHE. ML:2 0.000394 0.26 AML other m 2019-09-21T21:48:28.99
IV.GUMA.HHN. ML:1.7 0.000219 0.48 AML other m 2019-09-21T21:48:29.07
IV.FDMO.HHE. ML:1.2 5.71E-5 0.16 AML other m 2019-09-21T21:48:30.38
IV.FDMO.HHN. ML:1.3 6.775E-5 0.32 AML other m 2019-09-21T21:48:30.50
IV.RM33.EHN. ML:1.3 6.68E-5 0.12 AML other m 2019-09-21T21:48:30.91
IV.RM33.EHE. ML:1.4 7.93E-5 0.16 AML other m 2019-09-21T21:48:31.09
IV.LNSS.HHN. ML:1.3 6.685E-5 0.94 AML other m 2019-09-21T21:48:31.38
IV.LNSS.HHE. ML:1.3 6.895E-5 1.08 AML other m 2019-09-21T21:48:32.18
IV.GAVE.EHN. ML:1.4 8.155E-5 0.28 AML other m 2019-09-21T21:48:33.30
IV.GAVE.EHE. ML:1.5 8.265E-5 0.16 AML other m 2019-09-21T21:48:33.71
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