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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, May 21, 2025 02:21:25

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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

News Archive

Previous SWPC news items.

News Archive

Originally Posted
2025 GNSS User Engagement 2025 GNSS User Engagement Monday, May 19, 2025 - 20:00
14 May X flare R3 flare activity from Region 4087 Wednesday, May 14, 2025 - 09:18
X1.2 Flare 13 May Tuesday, May 13, 2025 - 16:46
Artemis II Testbed Event at SWPC Thursday, May 1, 2025 - 13:18
New NCEI Space Weather Portfolio of Archived Products Tuesday, April 29, 2025 - 22:37

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