Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 02-04-2020 and time 12:59:19 (UTC) in region 1 km N Ussita (MC)

A magnitude ML 1.0 earthquake occured in region: 1 km N Ussita (MC), on

  • 02-04-2020 12:59:19 (UTC)
  • 02-04-2020 14:59:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9540, 13.1400 at 6 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 1 444 444
Visso MC 5 1107 1551
Castelsantangelo sul Nera MC 7 281 1832
Bolognola MC 9 142 1974
Acquacanina MC 9 121 2095
Fiastra MC 9 559 2654
Fiordimonte MC 10 202 2856
Preci PG 12 724 3580
Monte Cavallo MC 12 145 3725
Pieve Torina MC 13 1458 5183
Pievebovigliana MC 13 866 6049
Sarnano MC 16 3264 9313
Muccia MC 16 915 10228
Montemonaco AP 16 604 10832
Montefortino FM 17 1178 12010
Amandola FM 18 3629 15639
Norcia PG 18 4957 20596
Sellano PG 19 1079 21675
Cessapalombo MC 20 512 22187
Montegallo AP 20 523 22710

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 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)
80 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.0 2020-04-02
12:59:19		 42.9537 13.1402 6 2020-07-18
21:08:42		 Bollettino Sismico Italiano INGV 80927661
Reviewed
Rev100 		ML 0.9 2020-04-02
12:59:20		 42.9533 13.1403 1 2020-04-02
13:06:02		 Sala Sismica INGV-Roma 77790971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-02 12:59:19 ± 0.14
Latitude 42.9537 ± 0.0036
Longitude 13.1402 ± 0.0037
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80927661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 378
Semi-minor axis of confidence ellipse (meter) 118
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 34
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
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 32
Number of defining phases 16
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.23652
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77790971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-02 13:06:02

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 80927661
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-10 13:35:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SIRI.HHZ. 2020-04-02T13:00:47.40 3.0 undecidable manual Sn -6.58 0
OX.SABO.HNZ. 2020-04-02T13:00:46.08 3.0 undecidable manual Sg 1.35 0
AC.VLO.HHZ. 2020-04-02T13:00:44.23 3.0 undecidable manual Pn 5.9 0
XK.SELL.HHZ. 2020-04-02T13:00:34.29 3.0 negative manual Pn 3.88 0
IV.MGR.HHZ. 2020-04-02T13:00:18.67 3.0 undecidable manual Pg 7.72 0
IV.CIGN.HHZ. 2020-04-02T13:00:18.01 3.0 undecidable manual Sg 3.31 0
IV.PTRJ.HHZ. 2020-04-02T13:00:17.20 3.0 undecidable manual Sg 0.95 0
CR.STON.BHZ. 2020-04-02T13:00:15.04 3.0 undecidable manual Pn 4.59 0
IV.RIBO.EHZ.01 2020-04-02T13:00:09.99 3.0 undecidable manual Sn 0.15 0
GU.GSCL.HHZ. 2020-04-02T13:00:01.93 3.0 undecidable manual Pg 4.05 0
IV.SACR.HHZ. 2020-04-02T12:59:53.24 3.0 undecidable manual Pg 1.61 0
GU.POPM.HHZ. 2020-04-02T12:59:53.40 3.0 undecidable manual Pn -0.82 0
IV.LAV9.HHZ. 2020-04-02T12:59:43.35 3.0 positive manual Pg -0.53 0
IV.LPEL.HHZ. 2020-04-02T12:59:39.78 3.0 negative manual P -1.48 0
IV.MF5.EHZ. 2020-04-02T12:59:29.63 0.3 undecidable manual S 82 26.2515 103 0.49 66
IV.TERO.HHZ. 2020-04-02T12:59:28.64 3.0 undecidable manual S 0
IV.TERO.HHZ. 2020-04-02T12:59:27.07 3.0 undecidable manual P 0
IV.CESI.HHZ. 2020-04-02T12:59:27.31 0.6 undecidable manual S 287 19.9689 107 0.28 47
IV.NRCA.HHZ. 2020-04-02T12:59:25.05 0.3 undecidable manual S 189 13.4754 114 0.12 73
IV.MF5.EHZ. 2020-04-02T12:59:25.31 0.1 undecidable manual P 82 26.2515 103 0.12 96
IV.CSP1.EHZ. 2020-04-02T12:59:25.61 0.6 undecidable manual S 19 16.1727 110 -0.19 48
IT.MTCL.HGZ. 2020-04-02T12:59:24.78 0.6 undecidable manual S 291 12.2766 116 0.24 48
IV.CESI.HHZ. 2020-04-02T12:59:23.90 0.1 undecidable manual P 287 19.9689 107 -0.08 97
IV.FEMA.HNE. 2020-04-02T12:59:23.43 0.6 undecidable manual S 277 7.3815 129 0.32 47
IV.CSP1.EHZ. 2020-04-02T12:59:23.20 0.1 undecidable manual P 19 16.1727 110 -0.07 98
IV.FDMO.HHZ. 2020-04-02T12:59:23.89 0.3 undecidable manual S 335 10.1787 121 0 75
IV.NRCA.HHZ. 2020-04-02T12:59:22.64 0.1 undecidable manual P 189 13.4754 114 -0.12 98
IV.MC2.EHZ. 2020-04-02T12:59:22.68 0.3 undecidable manual S 140 6.1938 134 -0.11 74
IT.MTCL.HGZ. 2020-04-02T12:59:22.46 0.3 undecidable manual P 291 12.2766 116 -0.08 74
IV.MC2.EHZ. 2020-04-02T12:59:21.27 0.1 undecidable manual P 140 6.1938 134 -0.26 96
IV.FDMO.HHZ. 2020-04-02T12:59:21.90 0.1 undecidable manual P 335 10.1787 121 -0.27 95
IV.FEMA.HNE. 2020-04-02T12:59:21.77 0.1 undecidable manual P 277 7.3815 129 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.9 0.000125 0.22 AML other m 2020-04-02T12:59:24.37
IV.FDMO.HHE. ML:0.8 0.00009165 0.18 AML other m 2020-04-02T12:59:24.70
IV.NRCA.HHE. ML:1.2 0.00017999999999999998 0.72 AML other m 2020-04-02T12:59:25.97
IV.NRCA.HHN. ML:1.1 0.00014250000000000002 0.12 AML other m 2020-04-02T12:59:26.40
IV.CESI.HHN. ML:1.1 0.00010550000000000002 1.64 AML other m 2020-04-02T12:59:28.09
IV.CESI.HHE. ML:0.8 0.00005660000000000001 1.18 AML other m 2020-04-02T12:59:28.88
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