Earthquake with magnitude of ML 0.9 on date 31-08-2019 and time 01:19:01 (Italy) in region 2 km S Ussita (MC)

A magnitude ML 0.9 earthquake occured in region: 2 km S Ussita (MC), on

  • 30-08-2019 23:19:01 (UTC)
  • 31-08-2019 01:19:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.93, 13.15 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 2 444 444
Castelsantangelo sul Nera MC 4 281 725
Visso MC 5 1107 1832
Bolognola MC 10 142 1974
Preci PG 10 724 2698
Acquacanina MC 12 121 2819
Fiastra MC 12 559 3378
Fiordimonte MC 13 202 3580
Monte Cavallo MC 14 145 3725
Montemonaco AP 15 604 4329
Pieve Torina MC 15 1458 5787
Norcia PG 16 4957 10744
Pievebovigliana MC 16 866 11610
Montefortino FM 16 1178 12788
Sarnano MC 18 3264 16052
Montegallo AP 18 523 16575
Amandola FM 18 3629 20204
Sellano PG 18 1079 21283
Muccia MC 19 915 22198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
65 Km E of Perugia (166134 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
94 Km W of Montesilvano (53738 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 2019-08-30
23:19:01
42.93 13.15 9 2019-08-30
23:23:46
Sala Sismica INGV-Roma 71951231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-30 23:19:01 ± 0.24
Latitude 42.93 ± 0.00
Longitude 13.15 ± 0.00
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71951231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 426
Semi-minor axis of confidence ellipse (meter) 264
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.09713
Epicentral distance of station farthest from the epicenter (degree) 0.23742
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 71951231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-30 23:23:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2019-08-30T23:19:11.25 0.1 undecidable manual S 75 0.2374 109 0.42 90
IV.CESI.HHZ. 2019-08-30T23:19:09.29 0.1 undecidable manual S 294 0.1925 113 0.07 97
IV.CSP1.EHZ. 2019-08-30T23:19:08.35 0.1 undecidable manual S 15 0.17 116 -0.07 98
IV.MMO1.EHZ. 2019-08-30T23:19:07.05 0.1 undecidable manual S 102 0.1358 121 -0.22 95
IV.NRCA.HHZ. 2019-08-30T23:19:06.13 0.1 undecidable manual S 194 0.0971 131 0.07 99
IV.MF5.EHZ. 2019-08-30T23:19:06.70 0.1 undecidable manual P 75 0.2374 109 -0.04 97
IV.CESI.HHZ. 2019-08-30T23:19:05.76 0.3 undecidable manual P 294 0.1925 113 -0.05 73
IV.CSP1.EHZ. 2019-08-30T23:19:05.25 0.3 negative manual P 15 0.17 116 -0.1 73
IV.MMO1.EHZ. 2019-08-30T23:19:04.49 0.3 undecidable manual P 102 0.1358 121 -0.19 72
IV.NRCA.HHZ. 2019-08-30T23:19:04.01 0.1 undecidable manual P 194 0.0971 131 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.1 0.0001635 0.16 AML other m 2019-08-30T23:19:06.28
IV.NRCA.HHN. ML:1 0.00011445 0.32 AML other m 2019-08-30T23:19:06.89
IV.CESI.HHN. ML:0.8 4.3E-5 0.06 AML other m 2019-08-30T23:19:09.67
IV.CESI.HHE. ML:0.7 3.425E-5 0.42 AML other m 2019-08-30T23:19:09.64
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