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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, March 31, 2025 20:52:45

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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

S3 (Strong) Solar Radiation Storm in Progress

S3 (Strong) Solar Radiation Storm in Progress
S3 (Strong) Solar Radiation Storm in Progress
published: Friday, October 11, 2024 16:14 UTC

S3 (Strong) solar radiation storm conditions were reached the morning of 9 October (Eastern time zone). Storm conditions of at least S1-S2 (Minor-Moderate) are likely to continue into 10-11 October. This event is associated with the X1.8 (R3) solar flare the evening of 8 October and its related coronal mass ejection (CME). Visit our webpage for the latest information and updates about this event.