and the X-ray flux reached a peak of
1.5 x 10 sup -3
which is about 5 orders of magnitude
stronger than normal.
Apparently it was proton flare since
GOES 8 started measuring elevated proton flux immediately:
Oh, the proton flux was already
elevated from the previous event 2 days ago.
SEVERE SOLAR ACTIVITY:
The most powerful solar flare in 14 years, a remarkable
X18-category explosion, erupted from sunspot 486 this morning at
approximately 1110 UT. A strong solar radiation storm is in progress.
to learn about the effects of such storms.) The explosion hurled a
coronal mass ejection almost directly toward Earth, which could
trigger bright auroras when it arrives on Oct 29th or 30th.
coronagraph image captured at 12:18 UT
shows the coronal mass ejection of Oct. 28th billowing directly toward
Earth. Such clouds are called
The many speckles are solar protons striking the coronagraph's CCD
He's starting to use words like
"unprecedented", "extremely severe"...