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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, July 16, 2025 17:52:40

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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
POSTPONED Network Maintenance: 22 May 2024 Wednesday, February 28, 2024 - 19:30
Changes to Sunspot Group 3590 Sunspot Region 3590 Evolution from February 19-27th Tuesday, February 27, 2024 - 16:39
R3 Strong Flare Event Strongest Flare of the Current Solar Cycle Thursday, February 22, 2024 - 23:07
Two Flares; Effects on Cellular Networks Unlikely Two Major Solar Flares; Effects on Cellular Networks Unlikely Thursday, February 22, 2024 - 17:23
21 & 22 Feb R3 Events Thursday, February 22, 2024 - 00:05

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