Aurora is out this evening even if we can’t see it here in Duluth, Minn. because of clouds. The Kp index has shot up to “5” as of 7 p.m. CDT just like it did last night when auroras lit up the sky across the northern U.S. This means that a minor geomagnetic storm is in progress.
According to NOAA’s Space Weather Scales, minor storm effect from the high-speed solar wind particles blowing our way include:
* Weak fluctuations in power grids
* Minor impact on satellite operations possible
* Migratory animals are affected at this and higher levels; aurora is commonly visible at high latitudes (northern U.S.)
Be sure to get outside for a look at the northern sky before going to bed tonight. You might just see northern lights.
UPDATE 10 p.m. CDT: Activity dropped off a smidge to “4”.