Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 05-02-2021 and time 07:04:48 (Italy) in region 4 km N Pietralunga (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km N Pietralunga (PG), on

  • 05-02-2021 06:04:48 (UTC)
  • 05-02-2021 07:04:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4760, 12.4280 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.

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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
Pietralunga PG 4 2111 2111
Apecchio PU 9 1882 3993
Piobbico PU 14 2029 6022
Montone PG 15 1680 7702
Città di Castello PG 15 39913 47615
Cantiano PU 16 2245 49860
Gubbio PG 18 32216 82076
Cagli PU 20 8731 90807

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km N of Perugia (166134 inhabitants)
44 Km E of Arezzo (99543 inhabitants)
62 Km NW of Foligno (57155 inhabitants)
62 Km SW of Pesaro (94582 inhabitants)
63 Km SW of Fano (60888 inhabitants)
66 Km S of Rimini (147750 inhabitants)
75 Km S of Cesena (96758 inhabitants)
89 Km SE of Forlì (117913 inhabitants)
89 Km W of Ancona (100861 inhabitants)
90 Km E of Siena (53903 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 1.1 2021-02-05
06:04:48		 43.4757 12.4275 10 2021-02-05
06:08:53		 Sala Sismica INGV-Roma 86844991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-05 06:04:48 ± 0.1
Latitude 43.4757 ± 0.0036
Longitude 12.4275 ± 0.0050
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86844991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 438
Semi-minor axis of confidence ellipse (meter) 146
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 216
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.08274
Epicentral distance of station farthest from the epicenter (degree) 0.28509
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
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 86844991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-05 06:08:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PARC.HHZ. 2021-02-05T06:04:57.59 0.6 undecidable manual S 322 24.4533 112 0.39 45
IV.FRON.EHZ. 2021-02-05T06:04:57.06 0.6 undecidable manual S 79 24.4533 112 -0.13 48
IV.MURB.HHZ. 2021-02-05T06:04:57.50 0.6 undecidable manual S 162 24.8529 111 0.18 47
IV.BADI.EHZ. 2021-02-05T06:04:54.03 0.6 undecidable manual S 284 15.1737 123 -0.3 47
IV.MPAG.EHZ. 2021-02-05T06:04:54.47 0.6 undecidable manual P 57 31.6461 50 -0.05 48
IV.PIEI.HHZ. 2021-02-05T06:04:53.33 0.6 undecidable manual S 52 10.878 132 0.19 48
IV.MURB.HHZ. 2021-02-05T06:04:53.39 0.6 undecidable manual P 162 24.8529 111 -0.02 49
IV.PARC.HHZ. 2021-02-05T06:04:53.40 1.0 undecidable manual P 322 24.4533 112 0.06 24
IV.FRON.EHZ. 2021-02-05T06:04:53.20 0.3 positive manual P 79 24.4533 112 -0.13 71
IV.APEC.HHZ. 2021-02-05T06:04:52.50 0.6 undecidable manual S 356 9.1797 137 -0.22 48
IV.PIEI.HHZ. 2021-02-05T06:04:51.08 0.3 positive manual P 52 10.878 132 0.09 74
IV.BADI.EHZ. 2021-02-05T06:04:51.63 1.0 positive manual P 284 15.1737 123 -0.05 25
IV.APEC.HHZ. 2021-02-05T06:04:50.76 0.1 positive manual P 356 9.1797 137 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHN. ML:1.3 0.0002725 0.24 AML other m 2021-02-05T06:04:52.75
IV.APEC.HHE. ML:1.1 0.00016399999999999997 0.16 AML other m 2021-02-05T06:04:52.83
IV.PIEI.HHN. ML:1.0 0.0001365 0.34 AML other m 2021-02-05T06:04:53.52
IV.PIEI.HHE. ML:1.2 0.000209 0.2 AML other m 2021-02-05T06:04:53.70
IV.BADI.EHN. ML:1.1 0.00012204999999999999 0.58 AML other m 2021-02-05T06:04:54.48
IV.BADI.EHE. ML:1.0 0.0000901 0.16 AML other m 2021-02-05T06:04:54.67
IV.FRON.EHE. ML:0.6 0.000023899999999999998 0.96 AML other m 2021-02-05T06:04:57.11
IV.FRON.EHN. ML:0.8 0.0000383 0.52 AML other m 2021-02-05T06:04:57.29
IV.MURB.HHE. ML:1.3 0.000127 0.42 AML other m 2021-02-05T06:04:57.72
IV.MURB.HHN. ML:1.3 0.00011255 0.18 AML other m 2021-02-05T06:04:58.29
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