Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 04-08-2019 and time 15:49:30 (Italy) in region 2 km SW Ussita (MC)

A magnitude ML 0.8 earthquake occured in region: 2 km SW Ussita (MC), on

  • 04-08-2019 13:49:30 (UTC)
  • 04-08-2019 15:49:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9280, 13.1270 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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 4 281 1832
Preci PG 9 724 2556
Bolognola MC 11 142 2698
Acquacanina MC 12 121 2819
Fiastra MC 12 559 3378
Fiordimonte MC 13 202 3580
Monte Cavallo MC 13 145 3725
Pieve Torina MC 14 1458 5183
Norcia PG 15 4957 10140
Pievebovigliana MC 15 866 11006
Montemonaco AP 17 604 11610
Sellano PG 17 1079 12689
Montefortino FM 18 1178 13867
Muccia MC 19 915 14782
Sarnano MC 19 3264 18046
Montegallo AP 19 523 18569
Amandola FM 20 3629 22198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
63 Km E of Perugia (166134 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 0.8 2019-08-04
13:49:30		 42.9283 13.1273 10 2019-11-13
14:31:06		 Bollettino Sismico Italiano INGV 73266551
Reviewed
Rev100 		ML 1.1 2019-08-04
13:49:29		 42.9333 13.1118 10 2019-08-04
14:24:38		 Sala Sismica INGV-Roma 71162751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-04 13:49:30 ± 0.1
Latitude 42.9283 ± 0.0045
Longitude 13.1273 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73266551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 394
Semi-minor axis of confidence ellipse (meter) 373
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25001
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 73266551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-15 11:05:38

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 71162751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-04 14:24:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.TRAV.HHZ. 2019-08-04T13:51:31.34 3.0 undecidable manual Sn 1.55 0
IV.CET2.HHZ. 2019-08-04T13:51:13.88 3.0 undecidable manual Sn -9.99 0
IV.SARZ.HHZ. 2019-08-04T13:51:10.09 3.0 undecidable manual Sg 5.73 0
GU.CANO.HHZ. 2019-08-04T13:51:09.82 3.0 undecidable manual Sn 1.07 0
IV.PTRP.HHZ. 2019-08-04T13:51:08.18 3.0 undecidable manual Sg 1.99 0
IV.ZONE.HHZ. 2019-08-04T13:51:02.04 3.0 undecidable manual Sn -1.23 0
IV.CAVT.HHZ. 2019-08-04T13:50:59.07 3.0 positive manual Pg 9.7 0
GU.TRAV.HHZ. 2019-08-04T13:50:50.84 3.0 undecidable manual Pg 14.5 0
IV.SCIAC.HHZ. 2019-08-04T13:50:49.87 3.0 positive manual Pn -1.74 0
IV.CRAC.EHZ. 2019-08-04T13:50:37.30 3.0 undecidable manual Pg 10.15 0
IV.PTRJ.HHZ. 2019-08-04T13:50:25.24 3.0 undecidable manual Sn -7.15 0
IV.SLCN.HHZ. 2019-08-04T13:50:24.04 3.0 positive manual Pg 2.39 0
IV.SGG.HHZ. 2019-08-04T13:50:01.81 3.0 undecidable manual Pg -1.17 0
GU.GSCL.HHZ. 2019-08-04T13:50:00.89 3.0 undecidable manual Pn -3.53 0
IV.GATE.HHZ. 2019-08-04T13:49:59.09 3.0 negative manual Pn -5.88 0
IV.CSNT.HHZ. 2019-08-04T13:49:48.00 3.0 positive manual P -4.55 0
IV.TOLF.HHZ. 2019-08-04T13:49:48.00 3.0 undecidable manual P -4.03 0
IV.VCEL.EHZ. 2019-08-04T13:49:48.80 3.0 positive manual P 0.92 0
IV.RIBO.EHZ.01 2019-08-04T13:49:46.58 3.0 undecidable manual P -7.66 0
IV.SFI.EHZ. 2019-08-04T13:49:43.66 3.0 undecidable manual P -7.35 0
IV.MF5.EHZ. 2019-08-04T13:49:40.58 0.6 undecidable manual S 76 27.75 50 0.46 44
IV.CESI.HHE. 2019-08-04T13:49:37.69 0.6 undecidable manual S 295 19.9689 117 -0.13 48
IV.CSP1.EHZ. 2019-08-04T13:49:37.45 0.6 undecidable manual S 19 19.1697 118 -0.13 48
IV.MMO1.EHZ. 2019-08-04T13:49:36.51 0.3 undecidable manual S 101 16.5723 122 -0.26 71
IV.NRCA.HHZ. 2019-08-04T13:49:35.00 0.6 undecidable manual S 186 10.5783 134 -0.14 49
IV.MOMA.HHZ. 2019-08-04T13:49:35.69 3.0 undecidable manual S -6.56 0
IV.FDMO.HHZ. 2019-08-04T13:49:35.59 0.6 undecidable manual S 345 12.3765 129 -0.02 50
IT.MTCL.HGZ. 2019-08-04T13:49:35.66 0.3 undecidable manual S 305 12.6762 129 -0.02 75
IV.MF5.EHZ. 2019-08-04T13:49:35.85 0.6 undecidable manual P 76 27.75 50 -0.01 49
IV.CSP1.EHZ. 2019-08-04T13:49:34.24 0.1 undecidable manual P 19 19.1697 118 -0.16 96
IV.FEMA.HNE. 2019-08-04T13:49:34.73 0.6 undecidable manual S 301 7.2927 144 0.34 47
IV.CESI.HHE. 2019-08-04T13:49:34.38 0.1 undecidable manual P 295 19.9689 117 -0.16 96
IV.MC2.EHZ. 2019-08-04T13:49:34.48 0.6 undecidable manual S 111 5.3946 152 0.45 46
IV.FDMO.HHZ. 2019-08-04T13:49:33.28 0.1 undecidable manual P 345 12.3765 129 0.02 100
IT.MTCL.HGZ. 2019-08-04T13:49:33.27 0.1 undecidable manual P 305 12.6762 129 -0.03 100
IV.MMO1.EHZ. 2019-08-04T13:49:33.70 0.1 undecidable manual P 101 16.5723 122 -0.23 95
IV.MC2.EHZ. 2019-08-04T13:49:32.58 0.1 undecidable manual P 111 5.3946 152 0.23 97
IV.NRCA.HHZ. 2019-08-04T13:49:32.91 0.1 undecidable manual P 186 10.5783 134 -0.07 99
IV.FEMA.HNE. 2019-08-04T13:49:32.78 0.1 undecidable manual P 301 7.2927 144 0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.2 0.000174 0.16 AML other m 2019-08-04T13:49:35.16
IV.FDMO.HHN. ML:0.6 0.00004375 0.18 AML other m 2019-08-04T13:49:35.85
IV.FDMO.HHE. ML:0.5 0.000035449999999999994 1.56 AML other m 2019-08-04T13:49:36.89
IV.NRCA.HHN. ML:1.0 0.00011199999999999998 0.12 AML other m 2019-08-04T13:49:36.23
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download