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National Oceanic and Atmospheric Administration

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Space Weather Conditions
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24-Hour Observed Maximums
R
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G
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Latest Observed
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R1-R2 --
R3-R5 --
S1 or greater --
G
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
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

R1 (Minor Radio Blackout) Event on 9 November, 2021

R1 Event 9 November, 2021
R1 (Minor Radio Blackout) Event on 9 November, 2021
published: Wednesday, November 10, 2021 17:59 UTC

A long duration M2 X-ray flare (R1-Minor Radio Blackout) occurred at 1702 UTC (12:02 ET) on 9 November, 2021. This event's source region was beyond the northwest limb (upper right in GOES-16 SUVI image). The flare was associated with a limb event coronal mass ejection (CME); analysis of the CME is in progress, but initial indications suggest it is not likely to have an Earth-directed component. Additionally, this activity was associated with a small elevation in energetic proton flux at the >10 MeV level - not enough to warrant an S1 (Minor) Radiation Storm warning - but SWPC forecasters continue monitoring this closely. Continue visiting our SWPC webpage for the latest forecasts, information, and updates.