G1 (Minor) Geomagnetic Storm Alert Issued
published: Sunday, May 28, 2017 13:16 UTC UTC
A G1 (Minor) geomagnetic storm alert was issued at 2255 UTC on 27 May due to activity associated with the 23 May CME.
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.