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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, April 20, 2025 06:31:19

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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
Comet Nights Feb 2023 The "Green Comet" is Racing up the Northern Sky at Night! Tuesday, January 31, 2023 - 22:11
Space Weather Advisory Group Meeting at Dept. of Commerce Wednesday, January 18, 2023 - 19:50
Test Thursday, January 12, 2023 - 13:44
R3 Strong radio blackout/ D-rap/GOES SUVI imagery Another X1 flare (R3 (Strong) radio blackout Wednesday, January 11, 2023 - 05:49
R3 (Strong) HF Radio Blackout 1:50pm EST from X1.9 Flare Monday, January 9, 2023 - 20:03

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