ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 0.5 on date 18-03-2019 and time 16:33:29 (UTC) in region 2 km W Ussita (MC)

A magnitude ML 0.5 earthquake occured in region: 2 km W Ussita (MC), on

  • 18-03-2019 16:33:29 (UTC)
  • 18-03-2019 17:33:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.95, 13.12 at 11 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
Ussita MC 2 444 444
Visso MC 3 1107 1551
Castelsantangelo sul Nera MC 7 281 1832
Fiordimonte MC 10 202 2034
Acquacanina MC 10 121 2155
Preci PG 10 724 2879
Fiastra MC 10 559 3438
Bolognola MC 10 142 3580
Monte Cavallo MC 11 145 3725
Pieve Torina MC 12 1458 5183
Pievebovigliana MC 13 866 6049
Muccia MC 16 915 6964
Sellano PG 17 1079 8043
Norcia PG 18 4957 13000
Sarnano MC 18 3264 16264
Montemonaco AP 18 604 16868
Montefortino FM 18 1178 18046
Serravalle di Chienti MC 19 1070 19116
Amandola FM 20 3629 22745

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
62 Km E of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
97 Km NW of Montesilvano (53738 inhabitants)
100 Km S of Fano (60888 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 0.5 2019-03-18
16:33:29
42.95 13.12 11 2019-03-18
16:41:30
Sala Sismica INGV-Roma 66666721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-18 16:33:29 ± 0.05
Latitude 42.95 ± 0.00
Longitude 13.12 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66666721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 478
Semi-minor axis of confidence ellipse (meter) 258
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
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) 162
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.16637
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 66666721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-18 16:41:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ILLI.HHZ. 2019-03-18T16:34:51.72 3.0 negative manual Pg 15.98 0
IV.ERC.EHZ. 2019-03-18T16:34:46.35 3.0 undecidable manual Pg 5.37 0
GU.GSCL.HHZ. 2019-03-18T16:34:45.27 3.0 undecidable manual Sg 7.43 0
MN.TRI.HHZ. 2019-03-18T16:34:36.85 3.0 undecidable manual Sn -1.47 0
IV.RIBO.EHZ.01 2019-03-18T16:34:23.66 3.0 undecidable manual Sg 0.88 0
IV.FIR.HHZ. 2019-03-18T16:34:21.75 3.0 undecidable manual Sg 0.34 0
IV.TDS.HHZ. 2019-03-18T16:34:19.59 3.0 undecidable manual Pn -5.46 0
IV.MRLC.HHZ. 2019-03-18T16:34:15.61 3.0 positive manual Pg 8.03 0
IV.LIK.EHZ.01 2019-03-18T16:34:15.93 3.0 undecidable manual Sg 1.23 0
TV.SF04.EHZ. 2019-03-18T16:34:10.55 3.0 undecidable manual Sg -1.73 0
IV.NDIM.HNZ. 2019-03-18T16:34:07.21 3.0 positive manual Pn 0.02 0
IV.FIR.HHZ. 2019-03-18T16:34:00.31 3.0 undecidable manual Pg 3.93 0
IV.LPEL.HHZ. 2019-03-18T16:33:43.65 3.0 undecidable manual Pg -2.21 0
IV.CESI.HHZ. 2019-03-18T16:33:36.76 0.1 undecidable manual S 289 0.1664 91 0.05 99
IV.CSP1.EHZ. 2019-03-18T16:33:36.43 0.3 undecidable manual S 24 0.1556 92 0.04 74
IV.MMO1.EHE. 2019-03-18T16:33:36.24 0.3 undecidable manual S 108 0.1601 92 -0.3 71
IV.MC2.EHZ. 2019-03-18T16:33:34.04 0.3 undecidable manual S 127 0.0639 136 0.12 74
IV.FDMO.HHZ. 2019-03-18T16:33:34.42 0.1 undecidable manual S 345 0.0899 121 -0.09 100
IT.MTCL.HGE. 2019-03-18T16:33:34.57 0.1 undecidable manual S 297 0.098 116 -0.16 98
IV.MMO1.EHE. 2019-03-18T16:33:33.42 0.1 undecidable manual P 108 0.1601 92 -0.07 99
IV.CESI.HHZ. 2019-03-18T16:33:33.56 0.1 undecidable manual P 289 0.1664 91 -0.03 99
IV.CSP1.EHZ. 2019-03-18T16:33:33.51 0.1 undecidable manual P 24 0.1556 92 0.1 98
IV.FDMO.HHZ. 2019-03-18T16:33:32.39 0.1 undecidable manual P 345 0.0899 121 0.06 99
IT.MTCL.HGE. 2019-03-18T16:33:32.49 0.1 undecidable manual P 297 0.098 116 0.04 100
IV.MC2.EHZ. 2019-03-18T16:33:32.15 0.1 undecidable manual P 127 0.0639 136 0.17 98
IV.CIMA.HNZ. 2019-03-18T16:33:30.19 3.0 undecidable manual Pn 1.33 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.4 3.063135E-5 0.1408 AML other m 2019-03-18T16:33:34.66
IV.FDMO.HHN. ML:0.2 1.95997555E-5 0.0768 AML other m 2019-03-18T16:33:34.68
IV.CSP1.EHE. ML:0.8 4.843782E-5 0.3072 AML other m 2019-03-18T16:33:36.71
IV.CESI.HHE. ML:0.6 2.8314643E-5 0.576 AML other m 2019-03-18T16:33:36.79
IV.CESI.HHN. ML:0.6 2.867558E-5 0.1152 AML other m 2019-03-18T16:33:36.95
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