An R1 (Minor) radio blackout followed by an S1 (Minor) solar radiation storm occurred on 02 January 2016. The flare associated with this event was a long duration M2.3 flare that originated from NOAA Region AR12473, located near the Sun's southwestern (bottom right) limb and peaked at 02/0011 UTC (01/1911 EST). After the flare, an enhancement was observed in GOES-13 Proton Flux that crossed the NOAA Scale S1 (Minor) threshold at 02/0430 UTC, resulting in possible minor impacts on HF radio communications in the polar regions. Associated with this event was a fast-moving, asymmetric, partial-halo coronal mass ejection (CME) pictured above. Analysis of this CME, and subsequent WSA-Enlil model output, suggests a possible glancing blow at Earth early to midday EST on 03 January resulting in G1 (Minor) to G2 (Moderate) geomagnetic storms. Stay tuned here for further updates.
NOAA Scales mini
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.
G2 (Moderate) Watch Issued for 03 January
G2 (Moderate) Watch Issued for 03 January