Earthquake with magnitude of ML 1.8 on date 25-09-2019 and time 17:38:32 (Italy) in region 4 km NE Acquasanta Terme (AP)

A magnitude ML 1.8 earthquake occured in region: 4 km NE Acquasanta Terme (AP), on

  • 25-09-2019 15:38:32 (UTC)
  • 25-09-2019 17:38:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.81, 13.43 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
Acquasanta Terme AP 4 2916 2916
Roccafluvione AP 7 2010 4926
Montegallo AP 9 523 5449
Valle Castellana TE 10 977 6426
Venarotta AP 10 2066 8492
Palmiano AP 11 196 8688
Arquata del Tronto AP 11 1178 9866
Montemonaco AP 13 604 10470
Ascoli Piceno AP 13 49407 59877
Rocca Santa Maria TE 16 537 60414
Montefortino FM 17 1178 61592
Folignano AP 17 9241 70833
Comunanza AP 17 3166 73999
Force AP 18 1354 75353
Accumoli RI 19 667 76020
Rotella AP 20 906 76926
Civitella del Tronto TE 20 5116 82042

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Teramo (54892 inhabitants)
51 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)
75 Km NW of Pescara (121014 inhabitants)
79 Km NW of Chieti (51815 inhabitants)
90 Km S of Ancona (100861 inhabitants)
91 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 2019-09-25
15:38:32
42.81 13.43 19 2019-09-25
15:44:07
Sala Sismica INGV-Roma 72763091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-25 15:38:32 ± 0.11
Latitude 42.81 ± 0.00
Longitude 13.43 ± 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 72763091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 559
Semi-minor axis of confidence ellipse (meter) 522
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 560
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 17
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) 0.33904
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 72763091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-25 15:44:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2019-09-25T15:39:14.82 3.0 undecidable manual S 2.58 0
IV.PE3.EHZ. 2019-09-25T15:39:07.40 3.0 undecidable manual S -1.66 0
IV.ARVD.HHZ. 2019-09-25T15:38:48.26 3.0 undecidable manual P -0.08 0
IV.FDMO.HHZ. 2019-09-25T15:38:45.45 0.3 undecidable manual S 313 0.339 107 -0.09 70
IV.CAMP.HHZ. 2019-09-25T15:38:43.79 0.3 undecidable manual S 183 0.2716 113 0.11 71
IV.ARRO.EHZ. 2019-09-25T15:38:43.52 3.0 negative manual P -0.15 0
IV.NRCA.HHZ. 2019-09-25T15:38:42.63 0.3 undecidable manual S 277 0.232 117 0.04 73
IV.MC2.EHZ. 2019-09-25T15:38:42.21 0.3 undecidable manual S 301 0.2041 121 0.34 69
IV.SMA1.EHZ. 2019-09-25T15:38:41.56 0.1 undecidable manual S 201 0.1898 124 0.04 98
IV.GAVE.EHZ. 2019-09-25T15:38:41.36 3.0 negative manual P 0.02 0
IV.MF5.EHZ. 2019-09-25T15:38:41.79 0.3 undecidable manual S 7 0.1817 125 0.47 66
IV.LNSS.HHZ. 2019-09-25T15:38:40.39 3.0 positive manual P 0.07 0
IV.RM33.EHZ. 2019-09-25T15:38:40.14 3.0 positive manual P 0.01 0
IV.GIGS.HHZ. 2019-09-25T15:38:40.50 3.0 undecidable manual P -0.42 0
IV.FDMO.HHZ. 2019-09-25T15:38:39.95 0.3 undecidable manual P 313 0.339 107 -0.17 69
IV.MMO1.EHZ. 2019-09-25T15:38:39.78 0.1 undecidable manual S 321 0.1178 140 -0.14 97
IV.CAMP.HHZ. 2019-09-25T15:38:39.05 0.1 undecidable manual P 183 0.2716 113 0.01 96
IV.TERO.HHZ. 2019-09-25T15:38:38.30 0.1 undecidable manual P 145 0.2248 118 -0.02 97
IV.MTRA.HNZ. 2019-09-25T15:38:38.93 0.3 undecidable manual S 205 0.0558 159 -0.05 75
IV.NRCA.HHZ. 2019-09-25T15:38:38.34 0.1 undecidable manual P 277 0.232 117 -0.08 95
IV.MC2.EHZ. 2019-09-25T15:38:38.04 0.1 undecidable manual P 301 0.2041 121 0.04 97
IV.MF5.EHZ. 2019-09-25T15:38:37.36 0.1 undecidable manual P 7 0.1817 125 -0.33 92
IV.SMA1.EHZ. 2019-09-25T15:38:37.95 0.1 undecidable manual P 201 0.1898 124 0.15 95
IV.MMO1.EHZ. 2019-09-25T15:38:36.81 0.1 undecidable manual P 321 0.1178 140 -0.07 98
IV.MTRA.HNZ. 2019-09-25T15:38:36.35 0.1 undecidable manual P 205 0.0558 159 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:2 0.0009505 1.9 AML other m 2019-09-25T15:38:38.97
IV.MTRA.EHN. ML:2 0.000959 1.88 AML other m 2019-09-25T15:38:38.97
IV.MTRA.HNE. ML:1.7 0.000425 0.44 AML other m 2019-09-25T15:38:39.31
IV.MTRA.EHE. ML:1.7 0.000461 1.24 AML other m 2019-09-25T15:38:39.31
IV.SMA1.EHE. ML:2.1 0.0007125 1.8 AML other m 2019-09-25T15:38:41.03
IV.MF5.EHE. ML:1.8 0.0003345 1.68 AML other m 2019-09-25T15:38:41.97
IV.SMA1.EHN. ML:2.1 0.0007755 0.2 AML other m 2019-09-25T15:38:42.02
IV.MF5.EHN. ML:1.8 0.0003665 1.68 AML other m 2019-09-25T15:38:42.99
IV.NRCA.HHN. ML:2.5 0.00158 0.1 AML other m 2019-09-25T15:38:42.91
IV.NRCA.HNN. ML:2.5 0.00147 1.28 AML other m 2019-09-25T15:38:43.91
IV.TERO.HHN. ML:1.5 0.0001435 0.42 AML other m 2019-09-25T15:38:43.48
IV.NRCA.HHE. ML:2.2 0.0008695 0.76 AML other m 2019-09-25T15:38:43.87
IV.NRCA.HNE. ML:2.2 0.0007965 0.76 AML other m 2019-09-25T15:38:43.87
IV.TERO.HHE. ML:1.3 0.0001019 0.46 AML other m 2019-09-25T15:38:43.47
IV.CAMP.HHN. ML:1.7 0.000207 0.24 AML other m 2019-09-25T15:38:44.14
IV.CAMP.HHE. ML:2 0.0003785 0.26 AML other m 2019-09-25T15:38:44.11
IV.FDMO.HHE. ML:1.4 7.665E-5 0.18 AML other m 2019-09-25T15:38:45.74
IV.FDMO.HHN. ML:1.4 9.075E-5 1.68 AML other m 2019-09-25T15:38:45.01
IV.RM33.EHN. ML:1.6 0.000142 0.14 AML other m 2019-09-25T15:38:46.25
IV.RM33.EHE. ML:1.6 0.0001475 0.16 AML other m 2019-09-25T15:38:46.52
IV.LNSS.HHN. ML:1.6 0.00011485 1.06 AML other m 2019-09-25T15:38:47.20
IV.GIGS.HHN. ML:0.8 1.775E-5 0.32 AML other m 2019-09-25T15:38:47.12
IV.GIGS.HHE. ML:0.8 1.845E-5 0.74 AML other m 2019-09-25T15:38:47.41
IV.LNSS.HHE. ML:1.6 0.000124 0.12 AML other m 2019-09-25T15:38:47.48
IV.GAVE.EHN. ML:1.8 0.0001655 0.28 AML other m 2019-09-25T15:38:48.78
IV.GAVE.EHE. ML:1.7 0.00014685 0.26 AML other m 2019-09-25T15:38:49.06
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