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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, July 28, 2025 06:22:41

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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
R3 Event on 16 July 2024 from Region 3738 R3 Event on 16 July 2024 from Region 3738 Tuesday, July 16, 2024 - 14:18
Forecast Highlight 15-18 July: R1-R2 Events Remain Likely Forecast Highlight 15-18 July: R1-R2 Events Remain Likely Monday, July 15, 2024 - 13:56
A G1 Watch has been issued for July 13-14. G1 Watch for 13 July Thursday, July 11, 2024 - 15:51
Nighttime view of the northern lights in Alaska. The Evolution and Impact of Active Region 13664 Monday, July 8, 2024 - 14:22
G1 Watch for 3 July Monday, July 1, 2024 - 18:51

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