Scientists would predict that the following may happen due to solar flares:
- High-frequency radio waves used for radio communication will be blocked.
- Radio navigation systems and global positioning systems will be inaccurate.
- Electrical systems in satellites will fail.
- Power grid operations will go offline.
All of these responses reflect potential effects of solar flares on communication systems, navigation, satellite operations, and power grids. However, the most immediate and common observable effects are typically the blocking of high-frequency radio waves and inaccuracies in navigation systems.