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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, April 22, 2025 02:32:18

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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

Predicted Kp Data File Change May 4, 2020

Predicted Kp Data File Change
Predicted Kp Data File Change May 4, 2020
published: Friday, September 04, 2020 17:36 UTC

SWPC is changing its Kp JSON product to include only 3 days of predictions. Internally, SWPC generates predictions for days 4-7, however these are not official forecast products. Reducing the duration of the JSON to three days will restore the product to containing only the official forecast period. This change takes effect May 4, 2020