NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, May 29, 2025 16:25:27 UTC

Main menu

NOAA Scales mini

R1 (Minor) Radio Blackout Impacts
close
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

G1-Minor Storm Watch Issued for 08 December 2016

SDO A/A 193 imagery
G1-Minor Storm Watch Issued for 08 December 2016
published: Tuesday, December 06, 2016 23:11 UTC

A G1-Minor Geomagnetic Storm Watch is in effect for 08 December 2016 due to expected effects from a recurrent, negative polarity CH HSS. Stay tuned for updates!