Earthquake with magnitude of ML 1.6 on date 31-03-2020 and time 06:20:47 (Italy) in region 4 km S Preci (PG)

A magnitude ML 1.6 earthquake occured in region: 4 km S Preci (PG), on

  • 31-03-2020 04:20:47 (UTC)
  • 31-03-2020 06:20:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.84, 13.04 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 4 724 724
Norcia PG 7 4957 5681
Cerreto di Spoleto PG 10 1075 6756
Sellano PG 10 1079 7835
Visso MC 11 1107 8942
Castelsantangelo sul Nera MC 11 281 9223
Cascia PG 14 3217 12440
Ussita MC 14 444 12884
Vallo di Nera PG 16 364 13248
Poggiodomo PG 17 117 13365
Monte Cavallo MC 17 145 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
97 Km N of Guidonia Montecelio (88673 inhabitants)
98 Km W of Montesilvano (53738 inhabitants)
99 Km N of Tivoli (56533 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 1.6 2020-03-31
04:20:47
42.84 13.04 10 2020-03-31
04:31:37
Sala Sismica INGV-Roma 77721251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 04:20:47 ± 0.06
Latitude 42.84 ± 0.00
Longitude 13.04 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77721251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 317
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 299
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 35
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) 0.55218
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 77721251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 04:31:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-03-31T04:21:18.90 3.0 positive manual P 4.46 0
IV.LAV9.HHZ. 2020-03-31T04:21:09.96 3.0 undecidable manual P 0.08 0
IV.GIGS.HHZ. 2020-03-31T04:21:07.19 0.6 undecidable manual S 134 0.5522 50 0.19 45
IV.EL6.EHZ. 2020-03-31T04:21:05.80 0.6 undecidable manual S 6 0.4901 50 0.64 41
IV.TERO.HHZ. 2020-03-31T04:21:04.50 0.6 undecidable manual S 117 0.4694 50 -0.05 47
IV.SNTG.HHZ. 2020-03-31T04:21:02.97 0.6 undecidable manual S 350 0.42 50 -0.1 47
IV.RM33.EHZ. 2020-03-31T04:21:01.74 0.6 undecidable manual S 158 0.3561 50 0.55 43
IV.MOMA.HHZ. 2020-03-31T04:21:01.63 0.6 undecidable manual S 264 0.3444 50 0.8 39
IV.MF5.EHZ. 2020-03-31T04:21:01.61 0.6 undecidable manual S 64 0.3426 50 0.83 39
IV.ARRO.EHZ. 2020-03-31T04:21:00.20 0.6 undecidable manual S 217 0.3292 50 -0.17 47
IV.SMA1.EHZ. 2020-03-31T04:20:59.67 0.6 undecidable manual S 134 0.304 50 0.04 49
IV.MTRA.EHZ. 2020-03-31T04:20:58.53 0.6 undecidable manual S 108 0.277 50 -0.3 47
IV.CSP1.EHZ. 2020-03-31T04:20:58.53 0.6 undecidable manual S 26 0.2797 50 -0.38 46
IV.GIGS.HHZ. 2020-03-31T04:20:58.83 1.0 negative manual P 134 0.5522 50 -0.07 23
IV.LNSS.HHZ. 2020-03-31T04:20:57.49 0.6 undecidable manual S 179 0.2383 110 -0.07 49
IV.TERO.HHZ. 2020-03-31T04:20:57.37 0.3 positive manual P 117 0.4694 50 -0.11 70
IV.EL6.EHZ. 2020-03-31T04:20:57.85 1.0 negative manual P 6 0.4901 50 0.01 24
IV.SNTG.HHZ. 2020-03-31T04:20:56.33 1.0 positive manual P 350 0.42 50 -0.3 23
IV.CESX.HHZ. 2020-03-31T04:20:56.25 0.6 negative manual P 235 0.4038 50 -0.11 47
IV.MMO1.EHZ. 2020-03-31T04:20:56.58 0.6 undecidable manual S 75 0.2203 111 -0.35 47
IV.MOMA.HHZ. 2020-03-31T04:20:55.22 0.1 undecidable manual P 264 0.3444 50 -0.12 96
IV.MF5.EHZ. 2020-03-31T04:20:55.49 0.6 positive manual P 64 0.3426 50 0.19 47
IV.CESI.HHZ. 2020-03-31T04:20:55.74 0.6 undecidable manual S 329 0.1907 114 -0.13 49
IV.RM33.EHZ. 2020-03-31T04:20:55.49 0.1 undecidable manual P 158 0.3561 50 -0.05 97
IV.FDMO.HHZ. 2020-03-31T04:20:55.88 0.6 undecidable manual S 11 0.1988 113 -0.29 47
IV.MC2.EHZ. 2020-03-31T04:20:54.22 0.6 undecidable manual S 58 0.1322 123 0.34 48
IV.SMA1.EHZ. 2020-03-31T04:20:54.43 0.1 undecidable manual P 134 0.304 50 -0.21 94
IV.ARRO.EHZ. 2020-03-31T04:20:54.96 0.1 undecidable manual P 217 0.3292 50 -0.11 96
IV.CSP1.EHZ. 2020-03-31T04:20:53.99 0.6 negative manual P 26 0.2797 50 -0.23 47
IV.LNSS.HHZ. 2020-03-31T04:20:53.44 0.6 negative manual P 179 0.2383 110 -0.01 50
IV.MTRA.EHZ. 2020-03-31T04:20:53.99 0.1 negative manual P 108 0.277 50 -0.19 95
IV.FDMO.HHZ. 2020-03-31T04:20:52.57 0.1 negative manual P 11 0.1988 113 -0.07 99
IV.MMO1.EHZ. 2020-03-31T04:20:52.89 0.1 undecidable manual P 75 0.2203 111 -0.19 96
IV.CESI.HHZ. 2020-03-31T04:20:52.51 0.1 positive manual P 329 0.1907 114 0.04 100
IV.MC2.EHZ. 2020-03-31T04:20:51.58 0.3 negative manual P 58 0.1322 123 0.26 73
IV.NRCA.HNZ. 2020-03-31T04:20:51.96 0.6 undecidable manual S 97 0.0576 146 0.17 50
IV.NRCA.HNZ. 2020-03-31T04:20:50.42 0.1 negative manual P 97 0.0576 146 0.3 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.1 0.00223 1.86 AML other m 2020-03-31T04:20:51.99
IV.NRCA.HNN. ML:2.1 0.002035 1.86 AML other m 2020-03-31T04:20:51.99
IV.NRCA.HHE. ML:2.2 0.002605 0.18 AML other m 2020-03-31T04:20:52.00
IV.NRCA.HNE. ML:2.2 0.002475 0.16 AML other m 2020-03-31T04:20:52.01
IV.MF5.EHN. ML:1.8 0.0002365 0.42 AML other m 2020-03-31T04:20:55.12
IV.CESI.HHN. ML:1.8 0.0004065 0.28 AML other m 2020-03-31T04:20:56.05
IV.FDMO.HHE. ML:1.6 0.000272 0.2 AML other m 2020-03-31T04:20:56.34
IV.CESI.HHE. ML:1.4 0.0001895 0.54 AML other m 2020-03-31T04:20:56.11
IV.FDMO.HHN. ML:1.6 0.000268 0.28 AML other m 2020-03-31T04:20:56.44
IV.LNSS.HHN. ML:1.5 0.000173 1.22 AML other m 2020-03-31T04:20:58.21
IV.LNSS.HHE. ML:1.5 0.000193 1.08 AML other m 2020-03-31T04:20:58.36
IV.MTRA.EHN. ML:1.6 0.0001995 0.28 AML other m 2020-03-31T04:20:59.04
IV.CSP1.EHN. ML:1.5 0.0001414 0.78 AML other m 2020-03-31T04:20:59.70
IV.MTRA.EHE. ML:1.8 0.000317 0.24 AML other m 2020-03-31T04:21:00.16
IV.ARRO.EHE. ML:1.3 7.35E-5 0.8 AML other m 2020-03-31T04:21:00.94
IV.CSP1.EHE. ML:1.6 0.0001815 0.48 AML other m 2020-03-31T04:21:00.60
IV.ARRO.EHN. ML:1.3 8.245E-5 0.62 AML other m 2020-03-31T04:21:00.32
IV.MOMA.HHN. ML:1.4 8.54E-5 0.14 AML other m 2020-03-31T04:21:02.65
IV.MOMA.HHE. ML:1.5 0.00010735 0.5 AML other m 2020-03-31T04:21:03.08
IV.CESX.HHE. ML:1.4 8.605E-5 0.42 AML other m 2020-03-31T04:21:03.73
IV.CESX.HHN. ML:1.3 6.26E-5 0.62 AML other m 2020-03-31T04:21:04.80
IV.MF5.EHE. ML:1.8 0.000217 1.5 AML other m 2020-03-31T04:21:04.09
IV.TERO.HHE. ML:1.5 7.26E-5 0.8 AML other m 2020-03-31T04:21:05.08
IV.TERO.HHN. ML:1.6 8.84E-5 0.96 AML other m 2020-03-31T04:21:05.95
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