ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 0.9 on date 20-03-2019 and time 18:24:24 (UTC) in region 6 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 0.9 earthquake occured in region: 6 km SE Castelsantangelo sul Nera (MC), on

  • 20-03-2019 18:24:24 (UTC)
  • 20-03-2019 19:24:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.21 at 12 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
Castelsantangelo sul Nera MC 6 281 281
Montegallo AP 10 523 804
Montemonaco AP 11 604 1408
Ussita MC 11 444 1852
Arquata del Tronto AP 12 1178 3030
Norcia PG 12 4957 7987
Visso MC 13 1107 9094
Preci PG 14 724 9818
Montefortino FM 14 1178 10996
Bolognola MC 15 142 11138
Amandola FM 18 3629 14767
Accumoli RI 19 667 15434
Acquacanina MC 19 121 15555
Acquasanta Terme AP 19 2916 18471
Fiastra MC 20 559 19030
Comunanza AP 20 3166 22196

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
59 Km N of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
88 Km S of Ancona (100861 inhabitants)
93 Km W of Pescara (121014 inhabitants)
97 Km NW of Chieti (51815 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 0.9 2019-03-20
18:24:24
42.86 13.21 12 2019-03-20
18:32:55
Sala Sismica INGV-Roma 66730521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-20 18:24:24 ± 0.12
Latitude 42.86 ± 0.00
Longitude 13.21 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66730521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 489
Semi-minor axis of confidence ellipse (meter) 70
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.19605
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 66730521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-20 18:32:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTRA.EHZ. 2019-03-20T18:24:32.33 0.3 undecidable manual S 127 0.1727 95 -0.09 74
IV.FDMO.HHZ. 2019-03-20T18:24:32.96 0.6 undecidable manual S 333 0.1961 94 -0.17 48
IV.MMO1.EHZ. 2019-03-20T18:24:30.04 0.3 undecidable manual S 66 0.0935 122 -0.14 74
IV.CSP1.EHZ. 2019-03-20T18:24:30.36 3.0 positive manual P 0.08 0
IV.FDMO.HHZ. 2019-03-20T18:24:29.61 0.6 undecidable manual P 333 0.1961 94 -0.02 49
IV.NRCA.HHE. 2019-03-20T18:24:29.52 0.6 undecidable manual S 248 0.0755 132 -0.23 49
IV.MTRA.EHZ. 2019-03-20T18:24:29.36 1.0 positive manual P 127 0.1727 95 0.14 24
IV.MC2.EHZ. 2019-03-20T18:24:29.33 0.3 undecidable manual S 343 0.0522 145 0.03 76
IV.MMO1.EHZ. 2019-03-20T18:24:28.03 0.3 undecidable manual P 66 0.0935 122 0.1 75
IV.MC2.EHZ. 2019-03-20T18:24:27.66 0.6 undecidable manual P 343 0.0522 145 0.24 49
IV.NRCA.HHE. 2019-03-20T18:24:27.75 0.1 undecidable manual P 248 0.0755 132 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:0.7 4.1663365E-5 0.384 AML other m 2019-03-20T18:24:38.46
IV.MTRA.EHN. ML:0.5 2.669226E-5 0.1792 AML other m 2019-03-20T18:24:33.25
IV.MTRA.HNE. ML:1.1 8.472275E-5 0.5632 AML other m 2019-03-20T18:24:35.60
IV.MTRA.HNN. ML:1.4 0.000166688 0.7168 AML other m 2019-03-20T18:24:31.23
IV.FDMO.HHE. ML:0.4 1.36701715E-5 0.1408 AML other m 2019-03-20T18:24:33.21
IV.FDMO.HHN. ML:0.2 1.19423415E-5 43.9552 AML other m 2019-03-20T18:24:29.25
IV.CSP1.EHE. ML:1.2 8.32043E-5 2.3808 AML other m 2019-03-20T18:24:43.37
IV.CSP1.EHN. ML:1.1 6.87388E-5 1.4848 AML other m 2019-03-20T18:24:33.32
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