[600MRG] A HOLE IN THE SUN'S ATMOSPHERE - MF/LF propagation impact 09-13Apr18?

[Ralph Wallio, W0RPK]

http://spaceweather.com/

A HOLE IN THE SUN'S ATMOSPHERE: A wide hole in the sun's atmosphere is 
facing Earth and spewing a stream of solar wind toward our planet. 
Estimated time of arrival: April 9th. In this extreme ultraviolet image 
from NASA's Solar Dynamics Observatory [see link], we see not only the 
hole, but also a bushy filament of magnetic bordering the hole's leading 
edge.

Such filaments are often unstable. If this one erupts while it is facing 
Earth, it could hurl a CME in our direction, adding to the effect of the 
incoming solar wind.

The canyon-shaped hole is remarkably wide, stretching more than 700,000 
km from end to end. As a result, Earth could be under the influence of 
its gaseous emissions for days. Polar geomagnetic unrest and minor 
G1-class magnetic storms are possible from April 9th through 13th.

--- de Ralph Wallio W0RPK

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