Earthquake with magnitude of ML 0.9 on date 20-02-2020 and time 23:32:09 (Italy) in region 2 km SE Preci (PG)

A magnitude ML 0.9 earthquake occured in region: 2 km SE Preci (PG), on

  • 20-02-2020 22:32:09 (UTC)
  • 20-02-2020 23:32:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.06 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
Preci PG 3 724 724
Norcia PG 8 4957 5681
Visso MC 8 1107 6788
Castelsantangelo sul Nera MC 9 281 7069
Sellano PG 11 1079 8148
Ussita MC 11 444 8592
Cerreto di Spoleto PG 12 1075 9667
Monte Cavallo MC 16 145 9812
Cascia PG 16 3217 13029
Vallo di Nera PG 19 364 13393
Poggiodomo PG 19 117 13510
Fiordimonte MC 20 202 13712

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
57 Km W of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
97 Km W of Montesilvano (53738 inhabitants)
99 Km N of Guidonia Montecelio (88673 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
Rev 100 ML 0.9 2020-02-20
22:32:09
42.86 13.06 10 2020-02-20
22:37:21
Sala Sismica INGV-Roma 76684171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-20 22:32:09 ± 0.24
Latitude 42.86 ± 0.01
Longitude 13.06 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76684171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1522
Semi-minor axis of confidence ellipse (meter) 847
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
Circular confidence region, given by single value of horizontal uncertainty (meter) 1520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 198
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 76684171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-20 22:37:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
XK.GIZZ.HHZ. 2020-02-20T22:33:52.20 3.0 undecidable manual Sg 4.64 0
MN.TRI.HHZ. 2020-02-20T22:33:47.32 3.0 undecidable manual Sg 9.91 0
GU.CANO.HHZ. 2020-02-20T22:33:46.44 3.0 undecidable manual Sn 1.89 0
CR.STON.BHZ. 2020-02-20T22:33:25.96 3.0 undecidable manual Sn -9.99 0
IV.MGR.HHZ. 2020-02-20T22:32:44.54 3.0 undecidable manual Pg 2.68 0
IV.FOSV.EHZ. 2020-02-20T22:32:36.48 3.0 undecidable manual Sn -0.4 0
IV.MF5.EHZ. 2020-02-20T22:32:22.25 0.3 undecidable manual S 67 0.3202 50 0.57 63
IV.IOCA.HHZ. 2020-02-20T22:32:20.06 3.0 negative manual Pg -4.41 0
IV.CSP1.EHZ. 2020-02-20T22:32:19.19 0.6 undecidable manual S 25 0.2545 50 -0.54 43
IV.CESI.HHZ. 2020-02-20T22:32:17.45 0.6 undecidable manual S 322 0.1817 115 0.28 46
IV.MF5.EHZ. 2020-02-20T22:32:16.44 1.0 negative manual P 67 0.3202 50 -0.06 24
IV.CSP1.EHZ. 2020-02-20T22:32:15.12 0.1 undecidable manual P 25 0.2545 50 -0.25 92
IV.MC2.EHZ. 2020-02-20T22:32:14.76 0.3 undecidable manual S 63 0.1079 129 0 75
IV.CESI.HHZ. 2020-02-20T22:32:14.03 0.6 undecidable manual P 322 0.1817 115 0.14 48
IV.NRCA.HHZ. 2020-02-20T22:32:13.03 0.6 undecidable manual S 124 0.0504 150 -0.24 48
IV.MC2.EHZ. 2020-02-20T22:32:12.55 0.6 undecidable manual P 63 0.1079 129 0.05 49
IV.NRCA.HHZ. 2020-02-20T22:32:11.67 0.1 undecidable manual P 124 0.0504 150 0.03 100
IV.LAV9.HNZ. 2020-02-20T22:32:06.02 3.0 positive manual P 0.75 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.3 0.0003425 0.06 AML other m 2020-02-20T22:32:13.07
IV.NRCA.HHE. ML:1 0.0001655 0.06 AML other m 2020-02-20T22:32:13.22
IV.CESI.HHN. ML:0.7 3.97E-5 0.22 AML other m 2020-02-20T22:32:17.76
IV.CESI.HHE. ML:0.7 3.99E-5 1.04 AML other m 2020-02-20T22:32:18.15
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