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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, April 26, 2018 17:32:27

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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

G1 (Minor) Geomagnetic Storms Likely on 24-25 October 2015

G1 (Minor) Geomagnetic Storms Likely on 24-25 October 2015
published: Sunday, October 25, 2015 15:08 UTC

A long-duration C4 flare from AR 12434 on 22 Oct produced an Earth-directed coronal mass ejection (CME) which forecasters anticipate to arrive late on 24 Oct.  The passage of the CME is likely to cause periods of G1 (Minor) geomagnetic storms late on 24 Oct through early 25 Oct.