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National Oceanic and Atmospheric Administration

Monday, April 21, 2025 12:59:52

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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
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G
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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
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G
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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

R1-R2 (Minor-Moderate) Event Likely 23-26 February, 2023

R1-R2 Likely 23-26 Feb
R1-R2 (Minor-Moderate) Event Likely 23-26 February, 2023
published: Wednesday, March 01, 2023 03:52 UTC

The likelihood of R1-R2 (Minor-Moderate HF Radio Blackout) events increased for 23-26 February, 2023. Region 3234 has grown in length and areal coverage. Additionally, the magnetic complexity increased as it developed a mixed magnetic configuration. Region 3234 already has an M-class flare history since rotating onto the visible solar disk, but now the probability of an R1-R2 level flare increased due to its continued development. Flare activity is measured by the NOAA GOES-16 satellite via the SUVI (Solar Ultraviolet Imager) and the EXIS (Extreme Ultraviolet and X-ray Irradiance Sensor). Keep visiting our website for the most current information, forecasts, and updates.