WØQQQ - Solar Activity and HF Propagation

What's the sun up to? Sunspots? Flares?

Extreme Ultraviolet Fe IX
NASA - Goddard
(image)

Soft X-Ray Telescope
Hiraiso - Japan
(image)
These are today's images, direct from NASA and Japan.
If the image says CCD Bakeout, click here.

NOAA RESOURCES

  • NOAA Space Weather Prediction Center
  • NOAA Space Weather Overview (bar graphs)
    • Solar X-ray Flux: Orders of magnitude of solar flares are represented by the letters A (lowest), B, C, M and X (highest intensity).
    • The A and K indices are related, but the K index will be a more up-to-date indication.
    • For the K index, lower is better, and zero is great.
    • The Boulder K index is also available from radio station WWV hourly at :18 on 2.5, 5 and 10 MHz.
    • You can call WWV anytime, at (303) 499-7111.

DOMINION OBSERVATORY INDICES

SPACE WEATHER CANADA

SPACE WEATHER FOR A MODERN WORLD

HF PROPAGATION LINKS

PUBLICATIONS