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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, November 21, 2024 15:52:37

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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

X2.2/2b Flare (R3 - Strong Radio Blackout) on 17 February 2023

X2.2/2b Flare (R3 - Strong Radio Blackout) on 17 February 2023
published: Tuesday, February 21, 2023 21:35 UTC

Region 3229 (N25E58, Dko/beta) produced an X2.2/2b flare at 17/2016 UTC (R3-Strong Radio Blackout). Associated with the event was a Type II radio sweep (est. 2,407 km/s) and a Tenflare (550 sfu). Forecasters are examining coronagraph imagery for an associated Coronal Mass Ejection (CME).