INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.0 on date 11-08-2018 and time 06:03:43 (Italy) in region 3 km NE Ussita (MC)

A magnitude ML 1.0 earthquake occured in region: 3 km NE Ussita (MC), on

  • 11-08-2018 04:03:43 (UTC)
  • 11-08-2018 06:03:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.97, 13.16 at 9 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 3 444 444
Bolognola MC 6 142 586
Visso MC 7 1107 1693
Acquacanina MC 7 121 1814
Fiastra MC 8 559 2373
Castelsantangelo sul Nera MC 8 281 2654
Fiordimonte MC 9 202 2856
Pievebovigliana MC 12 866 3722
Pieve Torina MC 12 1458 5180
Monte Cavallo MC 13 145 5325
Preci PG 14 724 6049
Sarnano MC 14 3264 9313
Montefortino FM 15 1178 10491
Muccia MC 16 915 11406
Montemonaco AP 16 604 12010
Amandola FM 16 3629 15639
Cessapalombo MC 18 512 16151
Gualdo MC 18 815 16966
Caldarola MC 20 1823 18789
Camerino MC 20 6974 25763

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
71 Km N of L'Aquila (69753 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
96 Km NW of Montesilvano (53738 inhabitants)
98 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 1.0 2018-08-11
04:03:43
42.97 13.16 9 2018-08-11
04:19:39
Sala Sismica INGV-Roma 59620761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-11 04:03:43 ± 0.36
Latitude 42.97 ± 0.01
Longitude 13.16 ± 0.01
Depth (km) 9 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 59620761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 750
Semi-minor axis of confidence ellipse (meter) 174
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) 750
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.22213
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 59620761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-11 04:19:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMUR.HNZ. 2018-08-11T04:03:56.20 3.0 undecidable manual P 0.84 0
IV.CESI.HHZ. 2018-08-11T04:03:51.28 0.3 undecidable manual S 281 0.188 112 0.34 94
IV.NRCA.HHZ. 2018-08-11T04:03:49.42 0.3 undecidable manual S 193 0.1394 119 0.18 98
IV.MMO1.EHZ. 2018-08-11T04:03:49.25 0.3 undecidable manual S 119 0.1421 118 -0.1 100
IV.CSP1.EHZ. 2018-08-11T04:03:49.30 0.3 undecidable manual S 16 0.1277 121 0.45 93
IV.MF5.EHZ. 2018-08-11T04:03:48.94 0.6 positive manual P 85 0.2221 109 0.6 58
IV.CESI.HHZ. 2018-08-11T04:03:47.57 0.6 undecidable manual P 281 0.188 112 -0.06 67
IV.FDMO.HHZ. 2018-08-11T04:03:47.30 0.3 undecidable manual S 323 0.0845 132 -0.22 99
IV.NRCA.HHZ. 2018-08-11T04:03:46.47 0.3 undecidable manual P 193 0.1394 119 -0.18 98
IV.MMO1.EHZ. 2018-08-11T04:03:46.61 0.6 positive manual P 119 0.1421 118 -0.1 67
IV.FDMO.HHZ. 2018-08-11T04:03:45.40 0.3 undecidable manual P 323 0.0845 132 -0.26 98
IV.CSP1.EHZ. 2018-08-11T04:03:45.98 0.3 undecidable manual P 16 0.1277 121 -0.44 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.8 8.32E-5 0.7 AML other m 2018-08-11T04:03:48.69
IV.FDMO.HHE. ML:0.7 7.755E-5 0.74 AML other m 2018-08-11T04:03:48.74
IV.NRCA.HHE. ML:1.2 0.000138 1.08 AML other m 2018-08-11T04:03:50.58
IV.NRCA.HHN. ML:1.1 0.00012 0.76 AML other m 2018-08-11T04:03:50.51
IV.CESI.HHN. ML:1.2 0.00010715 0.26 AML other m 2018-08-11T04:03:51.72
IV.CESI.HHE. ML:0.9 5.28E-5 0.3 AML other m 2018-08-11T04:03:51.74
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