Earthquake with magnitude of ML 0.9 on date 13-08-2020 and time 07:48:04 (Italy) in region 6 km E Ussita (MC)

A magnitude ML 0.9 earthquake occured in region: 6 km E Ussita (MC), on

  • 13-08-2020 05:48:04 (UTC)
  • 13-08-2020 07:48:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.94, 13.21 at 13 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 6 444 444
Castelsantangelo sul Nera MC 6 281 725
Bolognola MC 7 142 867
Visso MC 10 1107 1974
Montemonaco AP 11 604 2578
Acquacanina MC 11 121 2699
Montefortino FM 11 1178 3877
Fiastra MC 12 559 4436
Amandola FM 13 3629 8065
Sarnano MC 14 3264 11329
Montegallo AP 15 523 11852
Fiordimonte MC 15 202 12054
Preci PG 15 724 12778
Comunanza AP 17 3166 15944
Pievebovigliana MC 17 866 16810
Pieve Torina MC 18 1458 18268
Monte Cavallo MC 18 145 18413
Gualdo MC 18 815 19228
Norcia PG 18 4957 24185
Arquata del Tronto AP 20 1178 25363
Cessapalombo MC 20 512 25875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
51 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
67 Km N of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
97 Km NW of Pescara (121014 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
Reviewed
Rev100
ML 0.9 2020-08-13
05:48:04
42.94 13.21 13 2020-08-13
06:23:35
Sala Sismica INGV-Roma 81932831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-13 05:48:04 ± 0.09
Latitude 42.94 ± 0.00
Longitude 13.21 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81932831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 373
Semi-minor axis of confidence ellipse (meter) 348
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 102
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.02878
Epicentral distance of station farthest from the epicenter (degree) 0.30937
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.7
Num. used stations 6
Type of magnitude ML
Reference to an origin 81932831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-13 06:23:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MNTT.EHZ. 2020-08-13T05:48:11.29 0.1 negative manual P 66 0.3094 95 0.08 96
IV.CSP1.EHZ. 2020-08-13T05:48:11.42 0.6 undecidable manual S 359 0.1556 108 -0.22 47
IV.NRCA.HHZ. 2020-08-13T05:48:10.57 0.6 undecidable manual S 214 0.1241 117 -0.2 48
IV.FDMO.HHZ. 2020-08-13T05:48:10.99 0.6 undecidable manual S 319 0.134 114 -0.05 49
IV.MMO1.EHZ. 2020-08-13T05:48:09.84 0.6 undecidable manual S 113 0.0944 129 -0.19 48
IV.MC2.EHZ. 2020-08-13T05:48:09.07 0.6 undecidable manual S 210 0.0288 163 0.14 49
IV.CSP1.EHZ. 2020-08-13T05:48:08.60 0.6 negative manual P 359 0.1556 108 -0.02 49
IV.NRCA.HHZ. 2020-08-13T05:48:08.13 0.1 undecidable manual P 214 0.1241 117 0.02 100
IV.FDMO.HHZ. 2020-08-13T05:48:08.50 1.0 undecidable manual P 319 0.134 114 0.23 24
IV.MC2.EHZ. 2020-08-13T05:48:07.24 0.3 negative manual P 210 0.0288 163 0.19 74
IV.MMO1.EHZ. 2020-08-13T05:48:07.67 0.1 negative manual P 113 0.0944 129 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.9 7.325E-5 0.14 AML other m 2020-08-13T05:48:10.71
IV.NRCA.HHE. ML:0.9 7.575E-5 0.14 AML other m 2020-08-13T05:48:11.09
IV.MNTT.EHE. ML:1.7 0.000212 0.62 AML other m 2020-08-13T05:48:11.33
IV.MNTT.EHN. ML:1.7 0.000217 1.16 AML other m 2020-08-13T05:48:11.12
IV.FDMO.HHN. ML:-0.2 3.7920065E-6 0.16 AML other m 2020-08-13T05:48:13.80
IV.FDMO.HHE. ML:-0.2 5.158379E-6 0.1216 AML other m 2020-08-13T05:48:13.36
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