Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 22-02-2020 and time 08:05:21 (Italy) in region 9 km E Umbertide (PG)

A magnitude ML 1.1 earthquake occured in region: 9 km E Umbertide (PG), on

  • 22-02-2020 07:05:21 (UTC)
  • 22-02-2020 08:05:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3330, 12.4340 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Umbertide PG 9 16681 16681
Montone PG 9 1680 18361
Gubbio PG 12 32216 50577
Pietralunga PG 12 2111 52688

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Perugia (166134 inhabitants)
47 Km E of Arezzo (99543 inhabitants)
47 Km NW of Foligno (57155 inhabitants)
74 Km SW of Fano (60888 inhabitants)
75 Km SW of Pesaro (94582 inhabitants)
82 Km S of Rimini (147750 inhabitants)
88 Km N of Terni (111501 inhabitants)
89 Km E of Siena (53903 inhabitants)
91 Km S of Cesena (96758 inhabitants)
93 Km W of Ancona (100861 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
Bulletin
Rev1000 		ML 1.1 2020-02-22
07:05:21		 43.3333 12.4343 9 2020-07-18
21:08:22		 Bollettino Sismico Italiano INGV 76865691
Reviewed
Rev100 		ML 1.6 2020-02-22
07:05:21		 43.4067 12.5623 10 2020-02-22
07:08:19		 Sala Sismica INGV-Roma 76714611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-22 07:05:21 ± 0.1
Latitude 43.3333 ± 0.0036
Longitude 12.4343 ± 0.0062
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76865691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 561
Semi-minor axis of confidence ellipse (meter) 287
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
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 30
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37861
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 76714611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-22 07:08:19

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76865691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-27 12:41:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2020-02-22T07:05:33.01 0.3 undecidable manual S 21 32.9448 50 -0.37 67
IV.ATMI.HHZ. 2020-02-22T07:05:31.52 3.0 undecidable manual S 0.69 0
IV.BADI.EHZ. 2020-02-22T07:05:31.10 0.6 undecidable manual S 322 24.8529 111 0.14 48
IV.ATCC.EHZ. 2020-02-22T07:05:30.80 0.6 undecidable manual S 135 23.3544 112 0.32 46
IV.ATSC.EHE. 2020-02-22T07:05:30.13 0.3 undecidable manual S 64 22.6551 112 -0.13 72
IV.ATBU.EHZ. 2020-02-22T07:05:29.21 0.3 undecidable manual S 30 18.2706 117 0.34 69
IV.MPAG.EHZ. 2020-02-22T07:05:29.70 0.3 undecidable manual P 38 42.0246 50 -0.15 69
IV.NARO.HHZ. 2020-02-22T07:05:28.21 0.3 undecidable manual P 21 32.9448 50 -0.25 69
IV.ATPC.HHE. 2020-02-22T07:05:28.73 0.3 undecidable manual S 6 16.4724 120 0.41 68
IV.BADI.EHZ. 2020-02-22T07:05:27.39 0.1 undecidable manual P 322 24.8529 111 0.33 92
IV.ATPI.EHZ. 2020-02-22T07:05:27.30 0.3 undecidable manual S 349 13.2756 125 -0.08 74
IV.SSFR.HHN. 2020-02-22T07:05:27.63 0.3 undecidable manual P 68 30.2475 50 -0.42 67
IV.ATMI.HHZ. 2020-02-22T07:05:27.72 3.0 undecidable manual P 0.84 0
IV.ATSC.EHE. 2020-02-22T07:05:26.64 0.3 undecidable manual P 64 22.6551 112 -0.02 74
IV.ATCC.EHZ. 2020-02-22T07:05:26.82 0.1 undecidable manual P 135 23.3544 112 0.03 98
IV.MURB.HHZ. 2020-02-22T07:05:26.56 0.3 undecidable manual S 137 10.6782 131 -0.11 74
IV.ATBU.EHZ. 2020-02-22T07:05:26.08 0.1 undecidable manual P 30 18.2706 117 0.22 95
IV.TB02.DHZ.01 2020-02-22T07:05:25.04 0.1 undecidable manual S 334 4.5954 154 -0.32 95
IV.TB03.DHZ.01 2020-02-22T07:05:25.87 0.1 undecidable manual S 346 7.7811 140 -0.1 99
IV.ATPI.EHZ. 2020-02-22T07:05:25.15 0.1 undecidable manual P 349 13.2756 125 0.15 97
IV.ATVO.HHZ. 2020-02-22T07:05:25.24 0.3 undecidable manual S 338 5.8941 148 -0.34 71
IV.ATPC.HHE. 2020-02-22T07:05:25.77 0.1 undecidable manual P 6 16.4724 120 0.23 95
IV.TB01.DHZ.01 2020-02-22T07:05:25.12 0.1 undecidable manual S 1 5.3946 150 -0.37 94
IV.ATVO.HHZ. 2020-02-22T07:05:24.04 0.1 undecidable manual P 338 5.8941 148 0.08 100
IV.ATLO.EHE. 2020-02-22T07:05:24.88 0.1 undecidable manual S 227 2.997 162 -0.27 96
IV.MURB.HHZ. 2020-02-22T07:05:24.80 0.1 undecidable manual P 137 10.6782 131 0.21 96
IV.TB03.DHZ.01 2020-02-22T07:05:24.32 0.1 undecidable manual P 346 7.7811 140 0.13 98
IV.TB01.DHZ.01 2020-02-22T07:05:23.99 0.1 undecidable manual P 1 5.3946 150 0.08 100
IV.ATLO.EHE. 2020-02-22T07:05:23.80 0.1 undecidable manual P 227 2.997 162 0.09 100
IV.TB02.DHZ.01 2020-02-22T07:05:23.93 0.1 undecidable manual P 334 4.5954 154 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:1.3 0.0003675 0.3 AML other m 2020-02-22T07:05:25.36
IV.ATVO.HHN. ML:1.5 0.000499 0.34 AML other m 2020-02-22T07:05:25.37
IV.ATPI.EHE. ML:1.1 0.00014050000000000003 0.1 AML other m 2020-02-22T07:05:27.58
IV.ATPI.EHN. ML:0.9 0.0000883 1.34 AML other m 2020-02-22T07:05:27.70
IV.NARO.HHE. ML:1.2 0.00007039999999999999 0.14 AML other m 2020-02-22T07:05:33.26
IV.NARO.HHN. ML:1.0 0.00004425 1.02 AML other m 2020-02-22T07:05:33.35
IV.ATCC.EHN. ML:0.9 0.000052092605 0.0992 AML other m 2020-02-22T07:05:31.46
IV.ATCC.EHE. ML:1.1 0.000084861065 0.0992 AML other m 2020-02-22T07:05:31.30
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