For the first time in nearly 20 years, a Severe (G4) geomagnetic storm watch has been issued by NOAA Space Weather Prediction Center."
From "Solarham.com":
"Visible aurora will be likely for locations at middle latitudes should a strong (G3) to severe (G4) storm be observed as forecast.
Sky watchers across Scandinavia, Northern Europe, UK, Canada, northern tier USA and Alaska should all be alert.
Should a period of severe (G4) storming take place, locations as far south as Texas and California could see aurora on the horizon once dark outside."
ALERT: Type II Radio Emission
Begin Time: 2024 May 09 0902 UTC
Estimated Velocity: 1004 km/s
"Other impacts during a severe geomagnetic storm include degraded HF radio propagation, some issues with power systems especially at high latitudes and satellite navigation issues."
(source: https://solarham.com/ )