Earthquake with magnitude of ML 1.4 on date 21-05-2020 and time 01:05:20 (Italy) in region 4 km SW Sigillo (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km SW Sigillo (PG), on

  • 20-05-2020 23:05:20 (UTC)
  • 21-05-2020 01:05:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.31, 12.71 at 14 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
Sigillo PG 4 2404 2404
Fossato di Vico PG 4 2840 5244
Costacciaro PG 6 1216 6460
Gualdo Tadino PG 10 15208 21668
Scheggia e Pascelupo PG 11 1393 23061
Gubbio PG 12 32216 55277
Fabriano AN 16 31480 86757
Valfabbrica PG 19 3389 90146
Sassoferrato AN 19 7285 97431
Cantiano PU 20 2245 99676

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NE of Perugia (166134 inhabitants)
39 Km N of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
69 Km S of Pesaro (94582 inhabitants)
69 Km E of Arezzo (99543 inhabitants)
74 Km W of Ancona (100861 inhabitants)
83 Km N of Terni (111501 inhabitants)
85 Km S of Rimini (147750 inhabitants)
100 Km SE of Cesena (96758 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 1.4 2020-05-20
23:05:20
43.31 12.71 14 2020-05-20
23:18:28
Sala Sismica INGV-Roma 79386271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-20 23:05:20 ± 0.08
Latitude 43.31 ± 0.01
Longitude 12.71 ± 0.00
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79386271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 139
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 10
Circular confidence region, given by single value of horizontal uncertainty (meter) 540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41818
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 79386271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-20 23:18:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MC2.EHZ. 2020-05-20T23:05:40.95 3.0 undecidable manual S 1.06 0
IV.PE3.EHZ. 2020-05-20T23:05:30.02 0.1 undecidable manual P 338 0.4182 95 0.69 80
IV.FRON.EHZ. 2020-05-20T23:05:29.29 0.3 undecidable manual S 3 0.2104 105 -0.24 70
IV.ATVO.HHZ. 2020-05-20T23:05:29.99 0.3 undecidable manual S 289 0.2347 103 -0.23 70
IV.SNTG.HHZ. 2020-05-20T23:05:28.36 0.3 undecidable manual S 107 0.1745 111 -0.16 72
IV.FDMO.HHZ. 2020-05-20T23:05:28.79 3.0 undecidable manual P -0.03 0
IV.APEC.HHZ. 2020-05-20T23:05:28.04 0.3 undecidable manual P 320 0.3283 97 0.24 69
IV.EL6.EHZ. 2020-05-20T23:05:27.07 0.3 undecidable manual P 85 0.2842 99 0.02 73
IV.SSFR.HHZ. 2020-05-20T23:05:27.70 0.3 undecidable manual S 22 0.1385 119 0.15 73
IV.CESI.HHZ. 2020-05-20T23:05:27.77 3.0 positive manual P -0.09 0
IV.ATFO.HHZ. 2020-05-20T23:05:27.09 0.1 undecidable manual S 300 0.1178 125 0.05 99
IV.NARO.HHZ. 2020-05-20T23:05:27.66 0.3 undecidable manual P 343 0.3175 98 0.04 72
IV.ATCC.EHZ. 2020-05-20T23:05:27.39 0.3 undecidable manual S 203 0.1331 121 -0.03 75
IV.ASSB.HHZ. 2020-05-20T23:05:26.57 3.0 negative manual P -0.11 0
IV.ATVO.HHZ. 2020-05-20T23:05:26.09 0.3 undecidable manual P 289 0.2347 103 -0.12 72
IV.ATPI.EHZ. 2020-05-20T23:05:26.81 0.3 undecidable manual P 303 0.2671 100 0.05 72
IV.MURB.HHZ. 2020-05-20T23:05:26.34 3.0 undecidable manual P 0
IV.PIEI.HHZ. 2020-05-20T23:05:26.32 0.3 undecidable manual P 331 0.2617 100 -0.35 68
IV.ATSC.EHZ. 2020-05-20T23:05:26.98 0.3 undecidable manual S 351 0.1178 126 -0.06 74
IV.ARVD.HHZ. 2020-05-20T23:05:26.58 0.1 undecidable manual P 41 0.2527 101 0.05 97
IV.FRON.EHZ. 2020-05-20T23:05:25.70 0.3 undecidable manual P 3 0.2104 105 -0.11 72
IV.SNTG.HHZ. 2020-05-20T23:05:25.19 0.1 undecidable manual P 107 0.1745 111 -0.04 99
IV.ATFO.HHZ. 2020-05-20T23:05:24.40 0.1 undecidable manual P 300 0.1178 125 0.02 100
IV.ATSC.EHZ. 2020-05-20T23:05:24.33 0.1 undecidable manual P 351 0.1178 126 -0.05 99
IV.ATCC.EHZ. 2020-05-20T23:05:24.60 0.1 undecidable manual P 203 0.1331 121 0.01 99
IV.SSFR.HHZ. 2020-05-20T23:05:24.62 0.1 undecidable manual P 22 0.1385 119 -0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHN. ML:1.3 0.0001915 0.34 AML other m 2020-05-20T23:05:27.14
IV.ATCC.EHE. ML:1.7 0.000376 0.24 AML other m 2020-05-20T23:05:27.55
IV.ATFO.HHE. ML:1.3 0.000162 1.1 AML other m 2020-05-20T23:05:27.71
IV.ATCC.EHN. ML:1.5 0.00025 0.54 AML other m 2020-05-20T23:05:27.54
IV.SSFR.HNN. ML:1.6 0.0003205 0.14 AML other m 2020-05-20T23:05:28.74
IV.SNTG.HHE. ML:1.2 0.00011415 1 AML other m 2020-05-20T23:05:29.27
IV.ATVO.HHE. ML:1.1 5.945E-5 0.44 AML other m 2020-05-20T23:05:29.31
IV.SSFR.HHN. ML:1.3 0.000146 0.52 AML other m 2020-05-20T23:05:29.73
IV.SSFR.HHE. ML:1.4 0.0001865 0.72 AML other m 2020-05-20T23:05:29.52
IV.SSFR.HNE. ML:1.6 0.0002945 0.72 AML other m 2020-05-20T23:05:29.52
IV.SNTG.HHN. ML:1.2 9.67E-5 0.64 AML other m 2020-05-20T23:05:29.61
IV.FRON.EHE. ML:1.5 0.000185 0.12 AML other m 2020-05-20T23:05:30.17
IV.FRON.EHN. ML:1.4 0.000155 0.3 AML other m 2020-05-20T23:05:30.37
IV.ATVO.HHN. ML:1 4.845E-5 0.4 AML other m 2020-05-20T23:05:30.41
IV.ASSB.HHN. ML:1.5 0.000144 0.5 AML other m 2020-05-20T23:05:31.32
IV.PIEI.HHE. ML:1.4 0.0001038 0.26 AML other m 2020-05-20T23:05:31.44
IV.ASSB.HHE. ML:1.3 0.00010245 0.82 AML other m 2020-05-20T23:05:31.31
IV.PIEI.HHN. ML:1.3 9.12E-5 0.52 AML other m 2020-05-20T23:05:32.06
IV.EL6.EHN. ML:1.7 0.0001995 0.96 AML other m 2020-05-20T23:05:32.14
IV.EL6.EHE. ML:1.8 0.0002425 0.18 AML other m 2020-05-20T23:05:32.34
IV.NARO.HHE. ML:1.5 0.0001129 0.86 AML other m 2020-05-20T23:05:33.03
IV.NARO.HHN. ML:1.2 5.51E-5 0.6 AML other m 2020-05-20T23:05:34.13
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