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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, January 21, 2026 17:16:03

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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

Update: G4 (Severe) Geomagnetic Storm Alert Issued

Update: G4 (Severe) Geomagnetic Storm Alert Issued
published: Wednesday, January 21, 2026 17:13 UTC

Update: G4 (Severe) geomagnetic storm levels were reached at 08:23 UTC (3:23 am EST) and at 10:21 UTC (05:21 EST).

DAP - temp Head Section