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National Oceanic and Atmospheric Administration

Friday, April 26, 2024 23:25:06

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NOAA Scales mini

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

Sunspot Region Produces X2.8 Flare, Largest Since Sep 10, 2017

Sunspot Region Produces X2.8 Flare, Largest Since Sep 10, 2017
published: Monday, December 18, 2023 16:14 UTC

An X2.8 flare occurred on 14 Dec at 1702 UTC from AR 3514, which produced R3 (Strong) radio blackouts on portions of the sunlit side of the Earth. These blackouts can lead to temporary degradation or complete loss of high frequency radio signals. This is the largest flare of this solar cycle and since Sep 10, 2017, when an X8.2 flare was observed at GOES-15. This sunspot region will be monitored closely by SWPC forecasters given its potential to produce additional M-class and greater flares. Flare activity can be monitored at GOES X-ray Flux | NOAA / NWS Space Weather Prediction Center.