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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, April 20, 2024 06:38:30

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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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G
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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
no data
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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

R3 (Strong) Radio Blackouts from Region 2994

SOHO/LASCO C2 Imagery of the Associated Coronal Mass Ejection
R3 (Strong) Radio Blackouts from Region 2994
published: Friday, April 22, 2022 01:10 UTC

An X1 flare was observed at 17/0334 UTC from newly numbered Region 2994 (N14E75). This R3 (Strong) event had an associated Type II radio sweep and 10 cm radio burst. A coronal mass ejection was observed in SOHO/LASCO C2 imagery starting at 17/0348 UTC. Region 2994 and Region 2993 (N22E61) form a cluster of active sunspots that have produced significant flaring prior to appearing on the eastern limb. Solar activity is expected to be active over the next week as these sunspots migrate across the visible disk.