INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.6 on date 20-02-2019 and time 09:35:54 (Italy) in region 1 km NW Ussita (MC)

A magnitude ML 0.6 earthquake occured in region: 1 km NW Ussita (MC), on

  • 20-02-2019 08:35:54 (UTC)
  • 20-02-2019 09:35:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.95, 13.14 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
Ussita MC 1 444 444
Visso MC 4 1107 1551
Castelsantangelo sul Nera MC 6 281 1832
Bolognola MC 9 142 1974
Acquacanina MC 10 121 2095
Fiastra MC 10 559 2654
Fiordimonte MC 11 202 2856
Preci PG 11 724 3580
Monte Cavallo MC 12 145 3725
Pieve Torina MC 13 1458 5183
Pievebovigliana MC 13 866 6049
Montemonaco AP 17 604 6653
Muccia MC 17 915 7568
Sarnano MC 17 3264 10832
Montefortino FM 17 1178 12010
Norcia PG 18 4957 16967
Sellano PG 18 1079 18046
Amandola FM 18 3629 21675

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
63 Km E of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
96 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 0.6 2019-02-20
08:35:54
42.95 13.14 10 2019-02-20
08:46:12
Sala Sismica INGV-Roma 65726701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-20 08:35:54 ± 0.11
Latitude 42.95 ± 0.00
Longitude 13.14 ± 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 65726701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 391
Semi-minor axis of confidence ellipse (meter) 386
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.24012
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 65726701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-20 08:46:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2019-02-20T08:36:04.91 0.6 undecidable manual S 81 0.2401 50 0.57 43
IV.MML1.HNZ. 2019-02-20T08:36:02.98 0.3 undecidable manual S 324 0.2023 114 -0.17 71
IV.CESI.HHZ. 2019-02-20T08:36:02.25 0.3 undecidable manual S 288 0.1781 117 -0.03 74
IV.CSP1.EHZ. 2019-02-20T08:36:01.29 0.3 undecidable manual S 20 0.1511 121 -0.09 73
IV.MMO1.EHZ. 2019-02-20T08:36:00.92 0.3 undecidable manual S 110 0.1484 122 -0.4 69
IV.MF5.EHZ. 2019-02-20T08:36:00.40 0.3 undecidable manual P 81 0.2401 50 0.19 70
IV.NRCA.HHZ. 2019-02-20T08:36:00.06 0.1 undecidable manual S 188 0.1169 128 -0.26 95
IT.MTCL.HGZ. 2019-02-20T08:36:00.10 0.3 undecidable manual S 294 0.1088 130 0.03 75
IV.MC2.EHZ. 2019-02-20T08:35:59.17 0.3 undecidable manual S 134 0.0549 149 0.47 69
IV.FDMO.HHZ. 2019-02-20T08:35:59.74 0.3 undecidable manual S 338 0.0935 135 0.11 74
IV.FEMA.HNZ. 2019-02-20T08:35:59.29 0.1 undecidable manual S 281 0.0639 145 0.4 93
IV.MML1.HNZ. 2019-02-20T08:35:59.26 0.1 undecidable manual P 324 0.2023 114 -0.27 93
IV.CESI.HHZ. 2019-02-20T08:35:58.86 0.3 undecidable manual P 288 0.1781 117 -0.17 72
IV.MMO1.EHZ. 2019-02-20T08:35:58.21 0.1 undecidable manual P 110 0.1484 122 -0.26 94
IV.CSP1.EHZ. 2019-02-20T08:35:58.40 0.3 undecidable manual P 20 0.1511 121 -0.1 73
IV.FDMO.HHZ. 2019-02-20T08:35:57.48 0.1 undecidable manual P 338 0.0935 135 -0.02 100
IV.FEMA.HNZ. 2019-02-20T08:35:57.27 0.1 undecidable manual P 281 0.0639 145 0.2 97
IV.NRCA.HHZ. 2019-02-20T08:35:57.85 0.1 undecidable manual P 188 0.1169 128 -0.04 99
IT.MTCL.HGZ. 2019-02-20T08:35:57.71 0.1 undecidable manual P 294 0.1088 130 -0.04 99
IV.MC2.EHZ. 2019-02-20T08:35:57.19 0.3 undecidable manual P 134 0.0549 149 0.23 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.9 8.62E-5 0.14 AML other m 2019-02-20T08:36:00.24
IV.FDMO.HHE. ML:0.4 3.64945E-5 0.2176 AML other m 2019-02-20T08:36:00.00
IV.NRCA.HHE. ML:0.9 8.5984295E-5 0.1216 AML other m 2019-02-20T08:36:00.44
IV.CESI.HHE. ML:0.3 1.72369285E-5 0.1792 AML other m 2019-02-20T08:36:02.76
IV.CESI.HHN. ML:0.4 1.827281E-5 0.2048 AML other m 2019-02-20T08:36:02.94
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