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WG3K > SOLAR 10.05.24 20:34l 21 Lines 978 Bytes #999 (0) @ WW
BID : 4173_WG3K
Read: GAST
Subj: ALERT: Geomagnetic K-index of 8,9-
Path: DB0FFL<DB0FHN<DB0RKB<DK0WUE<DB0ERF<OK0NAG<OK0NBR<SR1BSZ<IW0QNL<JH4XSY<
N3HYM<K1AJD<KA1VSC<WG3K
Sent: 240510/1911Z 4173@WG3K.#SMD.MD.USA.NOAM LinBPQ6.0.24
Space Weather Message Code: ALTK08
Serial Number: 32
Issue Time: 2024 May 10 1904 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 May 10 1901 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
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