Original Message

Expect your gps to be Crap.

Non hardened wiring harnessed A/C ...most affected.

If you don't know what that means, it means EMI backshells and EMI metal braided Sheathing over wiring shield terminations and all wiring in twisted pair shielded format.

If you don't have it, you could experience poor service from your avionics.

https://www.swpc.noaa.gov/products/3-day-geomagnetic-forecast