Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 14-05-2021 and time 16:18:29 (UTC) in region 2 km E Valtopina (PG)

A magnitude ML 0.5 earthquake occured in region: 2 km E Valtopina (PG), on

  • 14-05-2021 16:18:29 (UTC)
  • 14-05-2021 18:18:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0630, 12.7800 at 6 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Valtopina PG 2 1398 1398
Nocera Umbra PG 6 5839 7237
Spello PG 12 8645 15882
Foligno PG 13 57155 73037
Assisi PG 13 28299 101336
Serravalle di Chienti MC 14 1070 102406
Sefro MC 17 422 102828
Cannara PG 18 4305 107133
Valfabbrica PG 18 3389 110522
Bastia Umbra PG 19 21874 132396
Fiuminata MC 19 1402 133798
Gualdo Tadino PG 19 15208 149006
Monte Cavallo MC 20 145 149151
Bevagna PG 20 5081 154232

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NE of Foligno (57155 inhabitants)
32 Km E of Perugia (166134 inhabitants)
57 Km N of Terni (111501 inhabitants)
85 Km SE of Arezzo (99543 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
88 Km NW of Teramo (54892 inhabitants)
89 Km S of Fano (60888 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
94 Km NW of L'Aquila (69753 inhabitants)
95 Km S of Pesaro (94582 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.5 2021-05-14
16:18:29		 43.063 12.7803 6 2021-05-14
16:26:12		 Sala Sismica INGV-Roma 90095521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-14 16:18:29 ± 0.32
Latitude 43.0630 ± 0.0072
Longitude 12.7803 ± 0.0049
Depth (km) 6 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90095521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 713
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 10
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.22573
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 90095521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-14 16:26:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-05-14T16:18:48.50 3.0 undecidable manual S 0
IV.NARO.HHZ. 2021-05-14T16:18:40.41 3.0 undecidable manual Pn 0
IV.MURB.HNZ. 2021-05-14T16:18:40.99 3.0 undecidable manual Sn 0.09 0
IV.FDMO.HHZ. 2021-05-14T16:18:37.57 0.6 undecidable manual S 97 25.0527 104 -0.44 45
IV.ATCC.EHZ. 2021-05-14T16:18:35.50 0.3 undecidable manual S 320 17.6712 110 -0.06 74
IV.MML1.EHE. 2021-05-14T16:18:35.09 0.3 undecidable manual S 70 16.4724 111 -0.08 74
IV.FDMO.HHZ. 2021-05-14T16:18:34.11 1.0 positive manual P 97 25.0527 104 -0.11 24
IV.ASSB.HHZ. 2021-05-14T16:18:33.25 0.6 undecidable manual S 257 10.0788 122 0.06 50
IV.MMUR.HNZ. 2021-05-14T16:18:33.57 3.0 negative manual Pn -0.7 0
IV.CESI.HHZ. 2021-05-14T16:18:33.84 0.3 undecidable manual S 123 11.9769 118 0.09 74
IV.ATCC.EHZ. 2021-05-14T16:18:32.63 1.0 negative manual P 320 17.6712 110 -0.17 24
IV.MML1.EHE. 2021-05-14T16:18:32.97 0.1 undecidable manual P 70 16.4724 111 0.39 92
IV.CESI.HHZ. 2021-05-14T16:18:31.67 0.6 undecidable manual P 123 11.9769 118 -0.08 50
IV.ASSB.HHZ. 2021-05-14T16:18:31.38 0.1 undecidable manual P 257 10.0788 122 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:0.8 0.00009795000000000001 0.18 AML other m 2021-05-14T16:18:33.61
IV.CESI.HHE. ML:0.4 0.00003465 0.42 AML other m 2021-05-14T16:18:33.35
IV.ASSB.HHE. ML:0.5 0.00005215 0.2 AML other m 2021-05-14T16:18:33.50
IV.CESI.HHN. ML:0.4 0.0000277 0.26 AML other m 2021-05-14T16:18:34.35
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download