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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, December 15, 2025 21:28:28

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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.

DAP - temp Head Section

News Archive

Originally Posted
G1 S1 R2 Events with photos CME analysis in progress Tuesday, September 5, 2017 - 02:59
R1-R2 Radio Blackouts on 4 September, 2017 Monday, September 4, 2017 - 09:35
G1 (Minor) Geomagnetic Storm Levels Observed Saturday, September 2, 2017 - 05:28
G2 Warning Auroral Forecast G2 (Moderate) Warning Issued: Valid to 31/1800 UTC Thursday, August 31, 2017 - 06:18
G1 Watch for 31 Aug - 1 Sep G1 (Minor) Watch for the 31 August and 1 September UTC-days Monday, August 28, 2017 - 20:20

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