Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 15-04-2020 and time 13:16:41 (Italy) in region 2 km NE Ussita (MC)

A magnitude ML 1.2 earthquake occured in region: 2 km NE Ussita (MC), on

  • 15-04-2020 11:16:41 (UTC)
  • 15-04-2020 13:16:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9590, 13.1560 at 8 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.

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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 6 1107 1551
Bolognola MC 7 142 1693
Castelsantangelo sul Nera MC 7 281 1974
Acquacanina MC 8 121 2095
Fiastra MC 9 559 2654
Fiordimonte MC 10 202 2856
Pieve Torina MC 13 1458 4314
Pievebovigliana MC 13 866 5180
Preci PG 13 724 5904
Monte Cavallo MC 13 145 6049
Sarnano MC 15 3264 9313
Montefortino FM 15 1178 10491
Montemonaco AP 15 604 11095
Amandola FM 17 3629 14724
Muccia MC 17 915 15639
Cessapalombo MC 19 512 16151
Norcia PG 19 4957 21108
Gualdo MC 19 815 21923
Montegallo AP 19 523 22446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
61 Km NE of Terni (111501 inhabitants)
65 Km E of Perugia (166134 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
95 Km NW of Montesilvano (53738 inhabitants)
99 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
Reviewed
Rev100 		ML 1.2 2020-04-15
11:16:41		 42.9593 13.1562 8 2020-04-15
11:23:03		 Sala Sismica INGV-Roma 78237001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-15 11:16:41 ± 0.1
Latitude 42.9593 ± 0.0045
Longitude 13.1562 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78237001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 453
Semi-minor axis of confidence ellipse (meter) 332
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 203
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37142
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 78237001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-15 11:23:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-04-15T11:16:55.71 0.1 undecidable manual S 354 41.2254 50 0.36 88
IV.ARVD.HHZ. 2020-04-15T11:16:53.04 3.0 negative manual P 0.1 0
IV.TERO.HHZ. 2020-04-15T11:16:50.89 3.0 undecidable manual P -0.38 0
IV.CESI.HHZ. 2020-04-15T11:16:49.19 0.1 undecidable manual S 284 21.0678 111 0.23 94
IV.EL6.EHZ. 2020-04-15T11:16:48.80 0.1 undecidable manual P 354 41.2254 50 -0.55 84
IV.MMO1.EHZ. 2020-04-15T11:16:47.25 0.1 undecidable manual S 116 15.3735 117 0.09 98
IV.CSP1.EHZ. 2020-04-15T11:16:47.30 0.1 undecidable manual S 15 15.1737 117 0.19 96
IT.MTCL.HGE. 2020-04-15T11:16:46.49 0.1 undecidable manual S 287 13.2756 121 -0.04 99
IV.FEMA.HNE. 2020-04-15T11:16:45.33 0.1 undecidable manual S 272 8.6802 132 0.11 99
IV.FDMO.HHZ. 2020-04-15T11:16:45.40 0.1 undecidable manual S 327 10.1787 128 -0.24 96
IV.CESI.HHZ. 2020-04-15T11:16:45.69 0.1 undecidable manual P 284 21.0678 111 0.03 98
IV.CSP1.EHZ. 2020-04-15T11:16:44.60 0.1 undecidable manual P 15 15.1737 117 0 99
IV.MMO1.EHZ. 2020-04-15T11:16:44.67 0.1 undecidable manual P 116 15.3735 117 0.05 99
IT.MTCL.HGE. 2020-04-15T11:16:44.24 0.1 undecidable manual P 287 13.2756 121 -0.02 99
IV.FDMO.HHZ. 2020-04-15T11:16:43.56 0.1 undecidable manual P 327 10.1787 128 -0.19 97
IV.MC2.EHZ. 2020-04-15T11:16:43.06 0.1 undecidable manual P 153 5.994 143 -0.08 99
IV.FEMA.HNE. 2020-04-15T11:16:43.54 0.1 undecidable manual P 272 8.6802 132 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.3 0.00027800000000000004 1.82 AML other m 2020-04-15T11:16:45.00
IV.FDMO.HHE. ML:1.0 0.00015050000000000003 0.9 AML other m 2020-04-15T11:16:47.30
IV.CESI.HHN. ML:1.3 0.0001485 0.28 AML other m 2020-04-15T11:16:49.57
IV.CESI.HHE. ML:1.1 0.0000993 1.12 AML other m 2020-04-15T11:16:50.23
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