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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, June 30, 2025 19:27:04

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NOAA Scales mini

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Space Weather Conditions
on NOAA Scales
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
on NOAA Scales
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 16 December 2015

G1 (Minor) Geomagnetic Storms Likely on 16 December 2015
published: Monday, December 14, 2015 21:22 UTC

G1 (Minor) geomagnetic storms are possible on 16 December 2015 due to effects from a recurrent negative polarity coronal hole high speed stream. Stay tuned for updates!