G2 (Moderate) geomagnetic storm watches for 17-18 April.
published: Sunday, April 19, 2026 05:46 UTC UTC
G2 (Moderate) geomagnetic storm watches have been issued for 17-18 Apr, 2026 due to anticipated CH HSS effects.
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.