2025 GNSS User Engagement
The GNSS User Engagement will be hosted by NOAA SWPC between 9 am and 12:30 pm Mountain Time on May 21st, 2025. Virtual or in-person participation is welcome.
NOAA Scales mini
R1 (Minor) Radio Blackout Impacts
HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
More about the NOAA Space Weather Scales
Navigation: Low-frequency navigation signals degraded for brief intervals.
2025 GNSS User Engagement