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National Oceanic and Atmospheric Administration

Sunday, October 22, 2017 22:37:36

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NOAA Scales mini

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Space Weather Conditions
24-Hour Observed Maximums
R
no data
S
no data
G
no data
Latest Observed
R
no data
S
no data
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
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R
no data
S
no data
G
no data
Current Space Weather Conditions
R1 (Minor) Radio Blackout Impacts
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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

R2 Flare from Region 2222

D-region plot
R2 Flare from Region 2222
published: Sunday, December 07, 2014 20:14 UTC

Despite a quiet past, Region 2222 produced a R2 - moderate solar flare today. There were no immediate indications that a CME occurred with this event. The impacts from this event transpired as a Solar Radio Blackout, which affects HF radio communications (3-30 MhZ) on the daylight side of Earth at the time of the flare. In this instance, without additional flares, the impacts should last under an hour. Depicted here a model plot showing what the impact area would have been as the flare occurred, and the affected frequencies.