Earthquake with magnitude of ML 1.1 on date 22-05-2020 and time 18:23:47 (Italy) in region 1 km W Nocera Umbra (PG)

A magnitude ML 1.1 earthquake occured in region: 1 km W Nocera Umbra (PG), on

  • 22-05-2020 16:23:47 (UTC)
  • 22-05-2020 18:23:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.11, 12.77 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
Nocera Umbra PG 2 5839 5839
Valtopina PG 6 1398 7237
Assisi PG 13 28299 35536
Gualdo Tadino PG 14 15208 50744
Sefro MC 15 422 51166
Serravalle di Chienti MC 15 1070 52236
Valfabbrica PG 15 3389 55625
Spello PG 15 8645 64270
Fiuminata MC 16 1402 65672
Foligno PG 18 57155 122827
Bastia Umbra PG 19 21874 144701
Pioraco MC 19 1134 145835
Cannara PG 20 4305 150140

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Foligno (57155 inhabitants)
31 Km E of Perugia (166134 inhabitants)
62 Km N of Terni (111501 inhabitants)
83 Km E of Arezzo (99543 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
84 Km S of Fano (60888 inhabitants)
90 Km S of Pesaro (94582 inhabitants)
91 Km NW of Teramo (54892 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
98 Km NW of L'Aquila (69753 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 1.1 2020-05-22
16:23:47
43.11 12.77 10 2020-05-22
16:40:34
Sala Sismica INGV-Roma 79455251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-22 16:23:47 ± 0.03
Latitude 43.11 ± 0.00
Longitude 12.77 ± 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 79455251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 228
Semi-minor axis of confidence ellipse (meter) 146
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 209
Circular confidence region, given by single value of horizontal uncertainty (meter) 230
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.36962
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 79455251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-22 16:40:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-05-22T16:24:01.18 0.3 undecidable manual S 138 0.3696 50 0.03 72
IV.CSP1.EHZ. 2020-05-22T16:23:59.76 0.6 undecidable manual S 93 0.3148 50 0.25 46
IV.EL6.EHZ. 2020-05-22T16:23:59.99 0.3 undecidable manual S 47 0.3256 50 0.14 71
IV.FDMO.HHZ. 2020-05-22T16:23:57.12 0.3 undecidable manual S 107 0.2392 50 -0.16 72
IV.MURB.HHZ. 2020-05-22T16:23:57.37 0.3 undecidable manual S 311 0.2392 50 0.09 73
IV.NRCA.HHZ. 2020-05-22T16:23:55.24 0.1 undecidable manual P 138 0.3696 50 -0.17 93
IV.SNTG.HHZ. 2020-05-22T16:23:55.48 0.3 undecidable manual S 39 0.1916 116 -0.25 71
IV.EL6.EHZ. 2020-05-22T16:23:54.62 0.1 undecidable manual P 47 0.3256 50 -0.03 97
IV.MML1.EHZ. 2020-05-22T16:23:54.27 0.3 undecidable manual S 87 0.1448 123 0.11 74
IV.CSP1.EHZ. 2020-05-22T16:23:54.52 0.1 undecidable manual P 93 0.3148 50 0.06 96
IV.ATCC.EHZ. 2020-05-22T16:23:53.51 0.3 undecidable manual S 309 0.125 127 -0.03 75
IV.FDMO.HHZ. 2020-05-22T16:23:53.08 0.1 undecidable manual P 107 0.2392 50 -0.09 97
IV.CESI.HHZ. 2020-05-22T16:23:53.98 0.3 undecidable manual S 137 0.1403 123 -0.04 75
IV.MURB.HHZ. 2020-05-22T16:23:53.08 0.1 undecidable manual P 311 0.2392 50 -0.09 97
IV.ASSB.HHZ. 2020-05-22T16:23:52.89 0.3 undecidable manual S 233 0.1061 131 -0.09 75
IV.SNTG.HHZ. 2020-05-22T16:23:52.21 0.1 undecidable manual P 39 0.1916 116 -0.07 99
IV.ATCC.EHZ. 2020-05-22T16:23:51.12 0.1 undecidable manual P 309 0.125 127 0.11 99
IV.MML1.EHZ. 2020-05-22T16:23:51.51 0.1 undecidable manual P 87 0.1448 123 0.14 98
IV.CESI.HHZ. 2020-05-22T16:23:51.35 0.1 undecidable manual P 137 0.1403 123 0.07 100
IV.ASSB.HHZ. 2020-05-22T16:23:50.76 0.1 undecidable manual P 233 0.1061 131 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.3 0.000208 0.08 AML other m 2020-05-22T16:23:53.07
IV.ASSB.HHN. ML:1.4 0.000281 0.32 AML other m 2020-05-22T16:23:53.07
IV.ATCC.EHE. ML:1.4 0.000245 0.2 AML other m 2020-05-22T16:23:53.82
IV.ATCC.EHN. ML:1.2 0.0001665 0.08 AML other m 2020-05-22T16:23:54.02
IV.CESI.HHN. ML:1 8.985E-5 0.3 AML other m 2020-05-22T16:23:54.60
IV.CESI.HHE. ML:0.9 7.6E-5 1.04 AML other m 2020-05-22T16:23:55.57
IV.MURB.HHE. ML:1.1 7.725E-5 0.86 AML other m 2020-05-22T16:23:57.95
IV.MURB.HHN. ML:1 6.07E-5 0.28 AML other m 2020-05-22T16:23:58.06
IV.NRCA.HHE. ML:1 2.98E-5 0.8 AML other m 2020-05-22T16:24:01.85
IV.NRCA.HHN. ML:1.1 3.88E-5 0.1 AML other m 2020-05-22T16:24:01.86
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