ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 0.9 on date 20-03-2019 and time 17:33:31 (UTC) in region 5 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 0.9 earthquake occured in region: 5 km SE Castelsantangelo sul Nera (MC), on

  • 20-03-2019 17:33:31 (UTC)
  • 20-03-2019 18:33:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.2 at 10 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 5 281 281
Ussita MC 11 444 725
Montegallo AP 11 523 1248
Montemonaco AP 11 604 1852
Norcia PG 12 4957 6809
Visso MC 12 1107 7916
Arquata del Tronto AP 13 1178 9094
Preci PG 13 724 9818
Montefortino FM 15 1178 10996
Bolognola MC 15 142 11138
Amandola FM 18 3629 14767
Acquacanina MC 19 121 14888
Accumoli RI 19 667 15555
Fiastra MC 20 559 16114
Acquasanta Terme AP 20 2916 19030

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
56 Km NE of Terni (111501 inhabitants)
59 Km N of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
94 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
17:33:31
42.86 13.2 10 2019-03-20
17:39:23
Sala Sismica INGV-Roma 66726771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-20 17:33:31 ± 0.08
Latitude 42.86 ± 0.00
Longitude 13.20 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66726771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 476
Semi-minor axis of confidence ellipse (meter) 459
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 143
Circular confidence region, given by single value of horizontal uncertainty (meter) 480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.04946
Epicentral distance of station farthest from the epicenter (degree) 0.28509
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 66726771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-20 17:39:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LNSS.HHE. 2019-03-20T17:33:42.49 0.1 undecidable manual S 205 0.2851 50 0.15 97
IV.MF5.EHZ. 2019-03-20T17:33:41.12 0.1 undecidable manual S 56 0.2266 50 0.5 91
IV.CESI.HHE. 2019-03-20T17:33:41.52 0.1 undecidable manual S 303 0.2599 50 -0.07 96
IV.FDMO.HHZ. 2019-03-20T17:33:39.02 0.3 undecidable manual S 334 0.1934 116 -0.48 69
IV.MTRA.EHZ. 2019-03-20T17:33:38.51 0.3 undecidable manual S 126 0.1781 117 -0.47 69
IV.LNSS.HHE. 2019-03-20T17:33:37.71 0.1 undecidable manual P 205 0.2851 50 0.06 99
IV.CESI.HHE. 2019-03-20T17:33:37.11 0.1 undecidable manual P 303 0.2599 50 -0.11 96
IV.MMO1.EHZ. 2019-03-20T17:33:36.24 0.3 undecidable manual S 68 0.0989 133 -0.24 74
IV.MF5.EHZ. 2019-03-20T17:33:36.83 1.0 negative manual P 56 0.2266 50 0.17 24
IV.MTRA.EHZ. 2019-03-20T17:33:35.55 0.6 undecidable manual P 126 0.1781 117 -0.17 49
IV.NRCA.HHZ. 2019-03-20T17:33:35.76 0.1 undecidable manual S 246 0.0701 143 0.04 100
IV.FDMO.HHZ. 2019-03-20T17:33:35.87 1.0 negative manual P 334 0.1934 116 -0.15 24
IV.MC2.EHZ. 2019-03-20T17:33:35.52 0.3 undecidable manual S 350 0.0495 152 0.21 73
IV.MMO1.EHZ. 2019-03-20T17:33:34.22 1.0 undecidable manual P 68 0.0989 133 -0.05 25
IV.MC2.EHZ. 2019-03-20T17:33:33.83 0.1 undecidable manual P 350 0.0495 152 0.23 97
IV.NRCA.HHZ. 2019-03-20T17:33:33.96 0.3 undecidable manual P 246 0.0701 143 0.12 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.7 0.0007257979 0.1024 AML other m 2019-03-20T17:33:35.85
IV.NRCA.HHN. ML:1.6 0.00060288345 0.0768 AML other m 2019-03-20T17:33:35.88
IV.NRCA.HNE. ML:1.7 0.00071189905 0.0896 AML other m 2019-03-20T17:33:35.87
IV.NRCA.HNN. ML:1.6 0.0005081661 0.0896 AML other m 2019-03-20T17:33:35.88
IV.MTRA.EHE. ML:0.6 2.94247395E-5 0.6144 AML other m 2019-03-20T17:33:38.81
IV.MTRA.EHN. ML:0.9 5.8031665E-5 0.448 AML other m 2019-03-20T17:33:39.24
IV.MTRA.HNE. ML:0.7 3.415128E-5 0.064 AML other m 2019-03-20T17:33:38.77
IV.FDMO.HHE. ML:0.6 2.381909E-5 0.1152 AML other m 2019-03-20T17:33:39.44
IV.FDMO.HHN. ML:0.6 2.5309215E-5 0.2048 AML other m 2019-03-20T17:33:39.72
IV.MF5.EHN. ML:0.6 2.498725E-5 0.3968 AML other m 2019-03-20T17:33:41.40
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