Visual Aurora Borealis/Northern Lights and VHF Radio Aurora Indicators
Quiet No Geomagnetic Storm KP-PLANETARY INDEX
Quiet No Geomagnetic Radio Aurora RADIO AURORA A-INDEX
No Radio Aurora
Guide KP-INDEX figure provides a good indicator of viewing the Aurora Borealis or Northern Lights The greater the KP-Index the higher probability of viewing .The Estimated 3-hour Planetary Kp-index data is collected from ground-based magnetometers.
Guide A-INDEX is an indicator of possible enhanced VHF radio signal communication at a range of upto 1000 miles or more. During strong solar activity frequencies from 28 to 433MHZ or higher allowing radio communications to be possible at mid to high latitudes .
Last Updated: 12:02:29