Earthquake with magnitude of ML 0.6 on date 21-03-2020 and time 21:37:45 (Italy) in region 3 km SW Sellano (PG)

A magnitude ML 0.6 earthquake occured in region: 3 km SW Sellano (PG), on

  • 21-03-2020 20:37:45 (UTC)
  • 21-03-2020 21:37:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 12.92 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
Sellano PG 3 1079 1079
Cerreto di Spoleto PG 5 1075 2154
Preci PG 10 724 2878
Vallo di Nera PG 11 364 3242
Campello sul Clitunno PG 12 2442 5684
Trevi PG 14 8469 14153
Sant'Anatolia di Narco PG 16 564 14717
Visso MC 16 1107 15824
Monte Cavallo MC 16 145 15969
Norcia PG 16 4957 20926
Poggiodomo PG 17 117 21043
Cascia PG 18 3217 24260
Scheggino PG 18 461 24721
Castelsantangelo sul Nera MC 20 281 25002

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SE of Foligno (57155 inhabitants)
40 Km NE of Terni (111501 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
97 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
100 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 0.6 2020-03-21
20:37:45
42.86 12.92 11 2020-03-21
20:50:29
Sala Sismica INGV-Roma 77444781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-21 20:37:45 ± 0.08
Latitude 42.86 ± 0.00
Longitude 12.92 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77444781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 446
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.14029
Epicentral distance of station farthest from the epicenter (degree) 0.41549
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 77444781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-21 20:50:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RM33.HNZ. 2020-03-21T20:38:00.05 0.3 undecidable manual S 148 0.4155 50 0.12 70
IV.ATCC.EHZ. 2020-03-21T20:37:59.18 0.3 undecidable manual S 328 0.3804 50 0.28 68
IV.SNTG.HHZ. 2020-03-21T20:37:59.44 0.3 undecidable manual S 3 0.3939 50 0.16 69
IV.MMO1.EHZ. 2020-03-21T20:37:56.65 0.3 undecidable manual S 83 0.304 50 0.03 72
IV.CSP1.EHZ. 2020-03-21T20:37:56.87 0.3 undecidable manual S 43 0.3121 50 -0.01 73
IV.MML1.HNZ. 2020-03-21T20:37:55.26 0.6 undecidable manual S 9 0.2554 50 0.08 48
IV.MC2.EHZ. 2020-03-21T20:37:53.94 0.6 undecidable manual S 76 0.2059 50 0.2 48
IV.SNTG.HHZ. 2020-03-21T20:37:53.03 0.1 undecidable manual P 3 0.3939 50 -0.22 91
IV.RM33.HNZ. 2020-03-21T20:37:53.55 0.3 undecidable manual P 148 0.4155 50 -0.08 70
IV.FDMO.HHZ. 2020-03-21T20:37:53.70 0.3 undecidable manual S 36 0.2149 50 -0.29 70
IV.ATCC.EHZ. 2020-03-21T20:37:52.87 0.1 undecidable manual P 328 0.3804 50 -0.17 93
IV.NRCA.HHZ. 2020-03-21T20:37:51.64 0.6 undecidable manual S 101 0.1484 122 -0.15 49
IV.MMO1.EHZ. 2020-03-21T20:37:51.69 0.6 undecidable manual P 83 0.304 50 -0.03 48
IV.CESI.HHZ. 2020-03-21T20:37:51.71 0.6 undecidable manual S 357 0.143 123 0.08 49
IT.MTCL.HGZ. 2020-03-21T20:37:51.64 0.6 undecidable manual S 25 0.1457 123 -0.06 49
IV.CSP1.EHZ. 2020-03-21T20:37:51.88 1.0 undecidable manual P 43 0.3121 50 0.01 24
IV.FEMA.HNZ. 2020-03-21T20:37:51.57 0.3 undecidable manual S 44 0.1403 124 0.03 75
IV.FDMO.HHZ. 2020-03-21T20:37:50.06 0.6 positive manual P 36 0.2149 50 -0.14 48
IV.MC2.EHZ. 2020-03-21T20:37:50.91 1.0 undecidable manual P 76 0.2059 50 0.85 19
IV.MML1.HNZ. 2020-03-21T20:37:50.75 0.1 undecidable manual P 9 0.2554 50 -0.13 96
IV.FEMA.HNZ. 2020-03-21T20:37:49.01 0.1 undecidable manual P 44 0.1403 124 0.22 96
IV.NRCA.HHZ. 2020-03-21T20:37:48.88 0.1 negative manual P 101 0.1484 122 -0.05 99
IV.CESI.HHZ. 2020-03-21T20:37:48.87 0.1 undecidable manual P 357 0.143 123 0.03 100
IT.MTCL.HGZ. 2020-03-21T20:37:48.87 0.1 undecidable manual P 25 0.1457 123 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.6 3.525E-5 0.88 AML other m 2020-03-21T20:37:52.30
IV.NRCA.HHE. ML:0.7 4.335E-5 0.64 AML other m 2020-03-21T20:37:52.47
IV.NRCA.HHN. ML:0.7 3.9E-5 0.2 AML other m 2020-03-21T20:37:52.51
IV.CESI.HHN. ML:0.6 3.515E-5 0.46 AML other m 2020-03-21T20:37:52.74
IV.FDMO.HHE. ML:0.6 2.68E-5 1.64 AML other m 2020-03-21T20:37:54.97
IV.FDMO.HHN. ML:0.6 2.685E-5 0.62 AML other m 2020-03-21T20:37:54.64
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