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NOAA Space Weather Scales Page Has Changed | NOAA / NWS Space Weather Prediction Center

NOAA Scales mini

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Space Weather Conditions

24-Hour Observed Maximums

R1-R2 --
R3-R5 --
S1 or greater --
R1-R2 --
R3-R5 --
S1 or greater --
R1-R2 --
R3-R5 --
S1 or greater --

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Current Space Weather Conditions

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

As part of the Space Weather Prediction Center's rollout of our improved website, the content from the old NOAA Space Weather Scales page is being provided in a new way.

Try the following page:

NOAA Space Weather Scales