Comment by 8bitsrule

19 days ago

G4: " Induced pipeline currents affect preventive measures, HF radio propagation sporadic..."

G5: " Pipeline currents can reach hundreds of amps, HF (high frequency) radio propagation may be impossible in many areas for one to two days..."

"Cool! What's G13 do?" - Bill Hicks

Looks like G5 is the highest level and the scale system is used by NOAA.

  • G13 could be a gamma-ray burst from a collapsing star less than 100 light years from earth

    in which case, don't worry about it as we won't be around to worry about it further

    astro-physics is AMAZING (until it kills you lol)

  • >"Cool! What's G13 do?" - Bill Hicks

    I hear that bit in my head every time a new plane or weapon designation is announced, glad to hear it stuck with others too.

HF propagation is flaky at the best of times. It's affected by the day/night cycle and by the weather.