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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, December 20, 2025 01:47:25

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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

Possible, Temporary Products and Services Disruption Through 17 December, 2025

Temporary Products and Services Disruption Through 17 December, 2025
Possible, Temporary Products and Services Disruption Through 17 December, 2025
published: Wednesday, December 17, 2025 01:26 UTC

SWPC products and services availability may be temporarily disrupted due to network changes through 17 December, 2025. Any possible, brief outages would be associated with proactive measures to ensure network integrity in the Boulder, CO, area in anticipation of a severe high wind event on Wednesday, 17 December. We will post any status updates should they be necessary.

DAP - temp Head Section