Earthquake with magnitude of ML 0.9 on date 15-04-2020 and time 07:00:50 (Italy) in region 1 km W Visso (MC)

A magnitude ML 0.9 earthquake occured in region: 1 km W Visso (MC), on

  • 15-04-2020 05:00:50 (UTC)
  • 15-04-2020 07:00:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.93, 13.08 at 10 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
Visso MC 1 1107 1107
Ussita MC 5 444 1551
Preci PG 7 724 2275
Castelsantangelo sul Nera MC 7 281 2556
Monte Cavallo MC 10 145 2701
Fiordimonte MC 12 202 2903
Pieve Torina MC 13 1458 4361
Fiastra MC 13 559 4920
Acquacanina MC 13 121 5041
Bolognola MC 14 142 5183
Sellano PG 14 1079 6262
Pievebovigliana MC 14 866 7128
Norcia PG 16 4957 12085
Muccia MC 17 915 13000
Cerreto di Spoleto PG 19 1075 14075
Serravalle di Chienti MC 19 1070 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
98 Km NE of Viterbo (67173 inhabitants)
99 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
Reviewed
Rev100
ML 0.9 2020-04-15
05:00:50
42.93 13.08 11 2020-04-15
05:06:40
Sala Sismica INGV-Roma 78223451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-15 05:00:50 ± 0.26
Latitude 42.93 ± 0.00
Longitude 13.08 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78223451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 570
Semi-minor axis of confidence ellipse (meter) 96
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.18166
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 6
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 78223451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-15 05:06:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2020-04-15T05:02:39.70 3.0 undecidable manual Sn -3.86 0
GU.CANO.HHZ. 2020-04-15T05:02:30.84 3.0 undecidable manual Sg 12.41 0
MN.BLY.HHZ. 2020-04-15T05:02:18.63 3.0 undecidable manual Sn -1.9 0
GU.PCP.HHZ. 2020-04-15T05:02:15.38 3.0 undecidable manual Sn -1.07 0
AC.VLO.HHZ. 2020-04-15T05:02:07.85 3.0 positive manual Pn 1.74 0
IV.PAOL.HHZ. 2020-04-15T05:01:59.36 3.0 undecidable manual Sg 9.52 0
IV.CGL.BHZ. 2020-04-15T05:01:46.88 3.0 undecidable manual Pn -3.84 0
OX.CLUD.HHZ. 2020-04-15T05:01:44.15 3.0 positive manual Pg 7.57 0
IV.PTRJ.HNZ. 2020-04-15T05:01:37.02 3.0 undecidable manual Sn -5.79 0
GU.PCP.HHZ. 2020-04-15T05:01:36.14 3.0 undecidable manual Pn -0.33 0
IV.LAV9.HHZ. 2020-04-15T05:01:09.27 3.0 undecidable manual Pg 1.97 0
IV.ATFO.HHZ. 2020-04-15T05:01:02.78 3.0 undecidable manual Sn -0.75 0
IV.COR1.EHZ. 2020-04-15T05:00:59.87 3.0 undecidable manual Pg 1.45 0
IV.CSP1.EHZ. 2020-04-15T05:00:58.30 0.3 undecidable manual S 29 0.1817 117 -0.09 73
IV.CESI.HHZ. 2020-04-15T05:00:57.06 0.3 undecidable manual S 299 0.1484 122 -0.24 71
IV.NARO.HHZ. 2020-04-15T05:00:57.24 3.0 negative manual Pn -0.99 0
IV.MMO1.EHZ. 2020-04-15T05:00:57.97 0.3 undecidable manual S 101 0.1817 117 -0.43 68
IV.MC2.EHZ. 2020-04-15T05:00:55.56 0.1 undecidable manual S 106 0.0809 139 0.27 95
IV.NRCA.HHZ. 2020-04-15T05:00:55.74 0.1 undecidable manual S 167 0.1025 133 -0.15 98
IV.FDMO.HHZ. 2020-04-15T05:00:55.87 0.1 undecidable manual S 2 0.1025 133 -0.02 100
IV.CSP1.EHZ. 2020-04-15T05:00:55.08 0.6 undecidable manual P 29 0.1817 117 0.02 49
IV.CESI.HHZ. 2020-04-15T05:00:54.62 0.6 undecidable manual P 299 0.1484 122 0.18 48
IV.MMO1.EHZ. 2020-04-15T05:00:54.96 1.0 undecidable manual P 101 0.1817 117 -0.11 24
IV.FDMO.HHZ. 2020-04-15T05:00:53.80 0.3 negative manual P 2 0.1025 133 0.18 73
IV.MC2.EHZ. 2020-04-15T05:00:53.62 0.6 undecidable manual P 106 0.0809 139 0.34 47
IV.NRCA.HHZ. 2020-04-15T05:00:53.70 0.1 positive manual P 167 0.1025 133 0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.1 0.000142 0.1 AML other m 2020-04-15T05:00:55.90
IV.FDMO.HHN. ML:0.7 5.76E-5 0.66 AML other m 2020-04-15T05:00:56.33
IV.FDMO.HHE. ML:0.9 9.655E-5 1.14 AML other m 2020-04-15T05:00:56.08
IV.NRCA.HHE. ML:1 0.0001176 1.34 AML other m 2020-04-15T05:00:56.06
MN.BLY.HNE. ML:3.2 0.000117 1.58 AML other m 2020-04-15T05:02:04.04
MN.BLY.HNN. ML:3.3 0.0001215 1.58 AML other m 2020-04-15T05:02:38.99
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