Auroral kilometric radiation (AKR) mainly comes from cyclotron radiation from electrons orbiting around the magnetic field lines of the Earth. The AKR has a frequency of between 50 and 500 kHz and a total power of between about 1 million and 10 million watts. The radiation is highly absorbed by the ionosphere and therefore can mainly be measured by satellites positioned at vast heights but the article ‘Ground-level detection of auroral kilometric radiation‘ published by James LaBelle and Roger R. Anderson in 2011 proves it could be also mesured on the Eart.
<AUR>.Sunspots
Regions with Sunspots | |||
Region | # of Spots | Mag Type | |
2814 | 06 | Beta | |
H-alpha Plages without Spots | |||
Region | |||
None | |||
Regions Due to Return 13 Apr to 15 Apr | |||
Region | |||
None |
<AUR>.Alert
<AUR>.Alert.Subscriberlast message issued over 124hrs ago
Space Weather Message Code: WARK04
Serial Number: 3875
Issue Time: 2021 Apr 08 0248 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3874
Valid From: 2021 Apr 07 0930 UTC
Now Valid Until: 2021 Apr 08 0900 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
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