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National Oceanic and Atmospheric Administration

Thursday, December 26, 2024 07:43:36

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NOAA Scales mini

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Space Weather Conditions
on NOAA Scales
24-Hour Observed Maximums
R
no data
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G
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Latest Observed
R
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S
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R1-R2 --
R3-R5 --
S1 or greater --
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no data
R1-R2 --
R3-R5 --
S1 or greater --
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no data
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R
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Current Space Weather Conditions
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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

Solar Cycle 25 Likely Reached the Highest Sunspot Number in over 20 Years

Solar Cycle 25 Likely Reached the Highest Sunspot Number in over 20 Years
Solar Cycle 25 Likely Reached the Highest Sunspot Number in over 20 Years
published: Wednesday, August 21, 2024 13:20 UTC

Solar Cycle 25 likely reached the highest sunspot number yet - a value of at least 299. The Space Weather Predicition Center (SWPC) non-official, estimated daily sunspot number for August 8th was 337, a value not observed since March 2001. However, the official SSN is determined by the World Data Center - Sunspot Index and Long-Term Solar Observations (WDC-SILSO) and it's Solar Influences Data Center (SIDC) at the Royal Observatory in Belgium; and their initial daily estimate for August 8th was 299. They will report out the official number by September 1st. Visit their webpage at: https://www.sidc.be/SILSO/home and as always visit our webpage for the latest space weather information and forecasts.