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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, April 16, 2025 04:52:21

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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
Far-sided CME and R1-Minor Radio Blackouts Wednesday, October 15, 2014 - 17:47
Change Ahead! Website Change Ahead! (UPDATED 10/21/2014) Thursday, October 9, 2014 - 22:07
Update: R1 and R2 radio blackouts Thursday, October 2, 2014 - 20:28
Recent activity Monday, September 29, 2014 - 21:44
Current Auroral Map Storm Conditions Wane Sunday, September 14, 2014 - 02:04

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