Valid From: 2017 Sep 07 2300 UTC
Now Valid Until: 2017 Sep 08 1500 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected (G3 / G4 or Greater).
Strong to Severe
- Power systems: Voltage corrections may be required, false alarms triggered on some protection devices.
- Spacecraft operations: Surface charging may occur on satellite components, drag may increase on low-Earth-orbit satellites, and corrections may be needed for orientation problems.
- Other systems: Intermittent satellite navigation and low-frequency radio navigation problems may occur, HF radio may be intermittent, and aurora has been seen as low as Illinois and Oregon (typically 50° geomagnetic lat.).
Dit kan betekenen radio verkeer moeizaam kan verlopen, het testen van je marifoon kan beter op een andere dag......
Ook kans op GPS storingen.
www.swpc.noaa.gov/noaa-scales-explanation
Ook kansje op noorderlicht:
www.bommeltje.nl/website/weers...-grave/noorderlicht/ 
