From Bloomberg:
Holes in the Sun Are Threatening to Throw Birds, GPS Off Course
Birds flying north for the spring and humans relying on global positioning satellites to navigate could get a little lost this weekend.
Three coronal holes spread across the sun are pointing at the Earth. As a result, a minor geomagnetic storm alert has been issued for Saturday by the U.S. Space Weather Prediction Center in Boulder, Colorado, and the Space Weather Operations Centre of the U.K. Met Office in Exeter.
“Early on Day 3 (2nd April), a high-speed stream from coronal hole 67 is expected to reach Earth,” said the Met Office.
The Planetary K index is a good reference for solar activity and it is down to zero. If it gets to a six or above, we stand a chance to see Aurora Borealis.
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